Complex to produce construction and heat insulation materials
FIELD: process engineering.
SUBSTANCE: invention relates to production of construction and heat insulation materials. Proposed complex comprises crusher, hopper, mixer, reed powder hopper, reed powder feed conveyor for production sandwich panels with vacuum-powder insulation or materials made from cheff or reed powder heated to 190-200°C to separate resin-based adhesive, rolls, molds and acclimatizator heated to over 200°C and oscillating at preset rate, and arranged under said conveyor. Note here that hopper is furnished with mixer and hot water circulation jacket and jacket with branch pipe to feed heat carrier and to dry cheff to 90-95°C. Mixer is communicated with vertical heated mill furnished with hot water circulation jacket.
EFFECT: production of new heat insulation material.
2 cl, 6 dwg
The invention relates to a technology for effective insulation with filling insulating space organic powder material, which serves as the common reed cane. Other material is bonded powder and chopped cane on their own Smolyan glue.
Numerous organic and inorganic insulating materials, such as porous plastic, fiberboard, cardboard, felt, reed plates /see "Handbook of civil engineering", Kiev, Budivelnik, 1965 Kiev, str-239/. However, the insulation with the help of various fibrous and powder materials, being relatively cheap, is not efficient because thermal conductivity of the material and the filling insulating air space. When this insulating reed plates are not industrial material and have a narrow scope. Known for high-efficiency insulation, which uses various combinations of vacuum with materials that reduce the flow of heat radiation. In modern vessels for storage of cryogenic liquids used a method in which the insulating space is filled with powder minors or perlite and pumped the air out to a moderate vacuum /residual pressure of about 2-10 PA /cm, p.43-44/. The disadvantage of this method is the use of expensive materials - minors and perlite. However, such insulation and heat insulation reed plates are the closest to the claimed thermal insulation materials analogues-prototypes. The aim of the invention is to expand the field of application of vacuum powder insulation and new insulation material.
The goal of the invention is achieved due to the fact that the mixer for mixing chaff or powder reeds and heating them from his walls up to a temperature of 180-200°C and equipped with a shirt and pipes for the circulation of water vapor or other fluid with a temperature of over 200°C, with a skating rink and razravnivalis mechanism is heated by electric current to a temperature of 200°C and above, and is provided with a mechanical vibrators for compaction of hot mass in the moving heated forms. In addition, the goal of the invention is achieved also by the fact that the cut cane is heated and dried in the mixer to a temperature of 90-95°C, moved out of it into the jet mill and ground into powder with accumulation in the hopper, or the powder again crushed by the movement of his second heated mixer and the second vortex mill.
The goal of the invention is achieved due to the fact that translocality fiberglass or metal sheets filled with dried powder of reeds, while pumping air out of it to a moderate vacuum is carried out in a vacuum chamber.
The above set of essential features with the introduction provides an implementation of the objectives, with each of the population shows signs are necessary and together sufficient to obtain a positive effect of extending the scope of application of vacuum powder insulation and new insulation material. Based on these arguments completely legitimate conclusion about conformity of the proposed technical solution the criteria of the invention - "inventive step".
Given a set of essential features can be implemented many times in practice, obtaining the same goal. Repeated the possibility of implementing /making/ proposed technical solution to the above set of essential features is also fully another main criteria of the invention - "industrial applicability".
Set out the essence of the technical solution is illustrated by drawings, on which:
- figure 1 shows a production line for receiving powder from the chaff of cane and the manufacture of products from them.
- Figure 2 shows a production line for double grinding powder from the chaff and get products on Oska.
- Figure 3 shows the cross-section of the wall panel.
- Figure 4 shows the cross section through the frame industrial building with display of metal wall panel with vacuum powder insulation.
- Figure 5 shows the node N in transverse section.
- Figure 6 shows a cross section through the vacuum chamber.
The complex effective insulation includes two options for obtaining a porous powder of organic materials - reed /reed/.
Production line consists of a conveyor 1, which serves the stalks of cane crushers 2 for grinding the stems in the chaff, the hopper 3 for accumulation of broken reeds. The bunker is equipped with stirrer, containing the shaft 4 with the blades 5, and a drive mechanism consisting of a reduction gear 6 and the motor 7. The hopper has a shirt 8 for the circulation of hot water and heating chaff, and the shutter 9, through which the hopper communicates with a heated mixer 10. The mixer includes a shaft 11 on which is placed the blade 12 and the screw 13. Mixer equipped with a jacket 14 with the pipe 15 for supplying fluid /hot water/ electric motor 16. The mixer 10 in turn communicates with a vertical heated mill 17 containing the shaft 18 to host Belami 19. The jacket 20, a motor 21. The mill is connected with the drive is the second hopper 22, containing the shutter 23. The conveyor 24. The line in the following way: on the conveyor 1 in the crusher 2 filed purified from leaves and panicles stems of reeds, which are sliced. Chopped accumulates in the hopper 3 and is simultaneously heated from its walls, by circulating hot water between the jacket 8 and the walls of the hopper. For intesification heating chaff and drying serves as a stirrer, containing the shaft 4 with the blades 5. When the preset level and temperature chaff in the bunker opens the shutter 8 and turns on the electric motor 16 to be heated mixer 10. In the mixer 10 is stirring blades 12 chaff, which is heated from its walls and dried. Temperature chaff is controlled by the sensors of control system /not shown/.
This temperature should not exceed 90-95°C, to avoid the appearance of the resin adhesive and the chaff sticking to the walls of the mixer. By means of the screw 13 is heated and dried chopped enters the vortex mill 17, which reduces the size of the chaff in the powder due to the rotation of the hit 19 on the shaft 18 of the electric motor 21. Mill 17 is also heated by hot water flowing between the jacket 20 and the walls of the mill. The mill has a cylindrical portion that falls into the cone 25 which allows to concentrate the flow of particles of organic material /chaff and powder in a smaller amount of the processed material and to achieve a complete grinding chaff powder, which is poured into the hopper 22. Ready porous lightweight powder when you open the shutter 23 is fed to the conveyor 24, with which it is delivered to the place/s/ its use.
The motor 16 is connected to the shaft 11 through the reduction gear /not shown/. On the contrary, the shaft 18 of the mill is rotated by an electric motor 21 with great speed, which ensures efficient grinding chaff rushes into powder.
To increase the fineness of chaff in powder figure 2 shows the scheme of two-stage grinding powder. It includes the following mechanisms: the conveyor 26, which serves purified from leaves and panicles stalks of cane to the mill 27. From the crusher the chaff is fed into a heated hopper 28 with a stirrer, containing the shaft 4 and the blade 5. From the bunker the chaff is fed into the mixer 29 where it is mixed, heated from its walls and dried, as in the first process flow of figure 1. From the mixer dried chopped enters the first mill 30 in which the outer wall is covered with a layer of teploizolyatsii, where it is crushed into powder. The powder is poured into the second heated mixer 31, in which the temperature of the powder is maintained at 90-95°C. From this mixer in a screw 13 powder of cane delivered to the mill 32 for secondary crushing and poured into the hopper 33. The walls of the mill 32 outside covered with a layer of those is Loiselle. From the hopper through the shutter 23, the powder is released for further use.
Chemical analysis of the cane contains 3,38-4,53% resins, fats and wax. The allocation of these adhesives is at 100° and above /see Reference state farm Builder, in the agricultural literature, M. 1962, page 76 /1/ and Gaibisso "Fundamentals of powder metallurgy) metallurgy,1987, p.100-103 /2//. Received light porous powder organic raw cane also contains from 40 to 45-46% cellulose, which is a natural polymer. Therefore, the value of reeds huge, as it can be used as filler items, being effective insulating material, and the quality of construction and finishing material by hot pressing the powder at a temperature of 180-200°C /see patents author No. 2199435 from 2000 and the patent on the Decision to grant a patent dated 20.12.2007,/.
Productivity reeds 10 times more in the forest, this cane is a renewable raw material with powerful natural stimulus of growth in different climatic conditions, cellulose cane itself is also of great value. Thus, the powder of reeds is a new organic insulating material, which is suitable for obtaining highly efficient insulation in constructions and products, evacuated to a low vacuum/on the adjusted pressure of about 2-10 PA /see Abinadab "Cryogenic liquid", M Physics, Knowledge, 1988/7, p.43-44 /3//.
thermal conductivity of the powder reeds in bulk form is less than λ=0.08 kcal/ mched and is further reduced with decreasing particle size and moisture content. In designs, evacuated to a low vacuum, thermal conductivity is approximately the same as under high vacuum /residual pressure of 10-3PA/.
Vacuum powder insulation can be used in the following structures:
- figure 3 shows a transverse section through the panel walls of the building. It consists of a structural layer of reinforced concrete plates 35 and fiberglass plate 36 connected to the glue. Fiberglass stove is a three-layer, fill the insulation space powder reeds /instead of the minors or perlite/ and pumping out of her air mechanical pump to a moderate vacuum /pressure remaining 2-10 PA/. The wall panel can also be 3-ply with two structural layers and one insulation. In addition, the insulating layer is made in the form of a three-layer rigid or flexible plate can be in the form of plates size. 800×400×80 mm and others, flexible plates, prior to installing minimized in view of the bale, with outer layers of filled thermoplastics: polietilene, propylene, polyvinyl chloride, polystyrene plastics and other
- Figure 4 pok is related portion of the wall of an industrial building in cross section, where a 3-ply plate /panel/ sandwich POS, column 38, the cap 39. Panel sandwich is performed with outer layers of metal sheets welded together in the form of boxes, fill-in-insulating space a light porous powder reed, evacuated by a pump to a residual pressure of 2-10 PA.
In the panels for pumping air hole is closed by a grid of 40. Near the hole attached to the valve 41, coated on its inner surface with a synthetic adhesive. After the evacuation of air from the panels installed in the vacuum chamber 42, by means of the air cylinder 43 and piston rod 44 is fitted in the panel pressed by the rod 44 at the start of the compressed air in the cylinders 43 and cover the holes. After sealing holes and hardening of the adhesive on the valve panel is extracted from the vacuum chamber 42. Evacuated to a residual pressure of 2-10 PA in the vacuum chamber occurs through the pipe 45. Air cylinders are mounted on the racks 46.
Roofing boards also performed with vacuum powder insulation type panels 37. Insulation products with vacuum powder insulation are also shell for pipes, plates sandwich of fiberglass for insulation of roofs of buildings and other
The above-described insulating products with vacuum powder insulation, the cat is Roy as a filler is a powder of reeds, refer to effective insulation.
The second type of progressive insulation materials are from the chaff and powder reeds, made in the form of plates of various sizes, for devices, partitions and warm preparations under floors, insulating layers 36 and 37, figure 3-4 the structural layer 35 made of reinforced concrete and metal sheets, and blocks external and internal walls EXT. 600×300×250 mm, 400×200×200 mm, 250×120×88/138/ etc. of These materials are made by heating chaff or powder rushes to a temperature of 180-200°C, at which highlighted the resin adhesive in the number 3,38-4,53%, followed by filling in their forms 47 placed on the trolleys 48, the alignment surfaces using heated by electric current mechanism 49, and seal the heated roller 50. The mechanism 49 and an ice rink 50 work with vibration at a given frequency. Next aligned and sealed product on trucks enters acclimatization 51, where it is cooled down /cooled off/ implementation hardening resin glue and delivery of finished products in the form of light porous rigid plates, blocks, etc. POS. Production line of figure 1, this process works as follows: the reeds in the form of treated stems or together with the brooms and the sheaths of the leaves fed to the crusher 2, from which ready the chaff is discharged to the hopper 3, is heated and the treatment tip can Suaeda and supplied to the mixer 10, where the chaff with stirring is heated from its walls up to T=180 to 200°C, is discharged into a heated hopper 22. From the conveyor 24 or directly through the shutter 23 hot chaff separated from her natural resin glue fills out the form 47, leveled mechanism 49 and compacted by the roller 50 when driving underneath the truck 48 form 47. Rink and mechanism 49 is heated by electric current to a temperature higher than 200°C. the Mixer is heated through pipe 15 steam or another fluid to a temperature exceeding 200°C. the Volumetric weight of the finished product depends on the degree of compaction of the hot mass in the form 47 roller 50 during movement of the trolleys 48 under him /roller 50 rotates, vibrates and compacts the hot mass of chaff/ and approximately equal 180-350 kg/m3when λ=0.08 to 0,112 kcal/m h deg.
For significant improvement in the properties of the finished product obtained rigid porous plate thickness. 80, 120, 200 mm for walls and partitions faced with cardboard, plywood, plastics of various thicknesses and colors.
While the materials and products from powder reeds have higher strength than from the chaff, and the compaction of hot powder in a heated 47 forms /forms under any and all products have a heating system through the use of electric heaters or other heat sources, such as hot water, steam/ using rink 50, supplied the military heaters and mechanical vibrators. Increasing the strength of ready-made powder cane is achieved due to the higher utilization of natural resin glue, in comparison with chaff. From the powder, you can make more thin and durable products. Hot powder can be sprayed with compressed air on any surface for insulation.
In figure 2, the powder is heated to a temperature of 180-200°C. in the mixer 31 and directly into the hopper 33, and in heated form 47 for the manufacture of various products.
1. The complex of building and insulating materials and products containing the crusher to obtain a broken reed, a hopper for accumulating the chaff, a mixer for mixing chaff and heat, jet mill for grinding chaff in the powder hopper powder reeds, conveyor powder supply of cane for production of sandwich panels with vacuum powder insulation or materials from the chaff or powder reeds heated to a temperature of 190-200°C for separation of these resin adhesive, is placed under the conveyor is heated to a temperature above 200°C. and vibrating at a given frequency mechanisms for surfacing products rollers for compacting and moving the heated forms for slabs or blocks, with the cooling of the finished products in acclimatization, characterized in that Boone is an EP for the accumulation of chaff cane equipped with a stirrer, contains a shaft with blades and drive mechanism with gear and motor, and a jacket for the circulation of hot water and heating chaff, and a gate which is connected with a mixer for mixing chaff and heat it contains a shaft connected to a gearbox and motor, posted on the blades and the screw to move the chaff, and a shirt with a pipe of the coolant and drying chaff to a temperature of 90-95°C, mixer communicates with heated vertical mill for grinding chaff powder, containing a cylindrical portion that engages with the conical, and the shaft with the motor placed on it Belami and a jacket for the circulation of hot water, and the mill is reported with heated cumulative hopper containing a shutter, and a conveyor mounted at him, for the powder supply of cane and the manufacture of sandwich panels.
2. The complex according to claim 1, characterized in that the mixer is connected with a storage bin for broken reeds, or a mixer, coupled to the hopper for powder, is heated with steam or another fluid to a temperature greater than 200°C, for marking resin glue from the chaff or powder of cane and the manufacture of these plates or blocks.
FIELD: building, particularly concrete mix preparation.
SUBSTANCE: encapsulation mixer comprises vertical cylindrical vessel with conical lower part secured to support plate. The support plate is connected to drive provided with cams and balancing weights. The mixer also comprises loading and unloading devices. The support frame is suspended by flexible connection ties, for instance by steel ropes. Upper vessel part is formed as truncated cone mating cylindrical vessel part by larger cone base. Lower vessel part is connected to frame through flexible braces. Loading and unloading devices are provided with one or several flexible pipelines. Upper cone base radii ratio is from 1:1 to 1:1.3. Lower cone base radii ratio is 5:1 - 1.5:1. Ratio between cylindrical vessel part height and upper cone height is 1:1 - 5:1, ratio between cylindrical vessel part height and lower cone height is 1:5 - 1:10.
EFFECT: increased operational efficiency and extended range of technical means for door, door leaf and locking system forming.
SUBSTANCE: invention is related to epoxide-wood composition for production of pressed boards used to cover foam polystyrene plates from external and internal sides on glue in order to protect them against external impact and to increase their service life. Composition includes the following components, with their following ratio, wt %: 37.2-43.5 of epoxide-diane resin ED-20, 3.7-4.3 of amine hardener of polyethylene polyamine, 43-52.1 of pine woodchip filler, 6.3-11.9 of polymer filler. Polymer filler used in composition is foam polystyrene chips - wastes of heat insulation production.
EFFECT: invention makes it possible to increase physical and mechanical characteristics of composition, to recycle wastes of wood processing and heat insulation materials.
2 tbl, 3 dwg
FIELD: technological processes.
SUBSTANCE: invention is intended for woodworking and construction industry, and also environmental protection, and may be used in production of different construction materials, furniture panels, etc. Particles of organic filler, in particular wastes of woodworking industry, are ground to size of 1-0.25 mm, fractioned and dried to moisture extent of 3% and below. Then particles of this component and thermoplastic binder are charged with opposite electric charges by means of their supply to surface of rotor that rotates with circumferential speed of 80-120 m/s. As thermoplastic binder you can use domestic waste, such as polyethylene bags, containers. Charged particles of filler and binder are mixed. Mass prepared in mixer is sent through overbridge equipped with bipolar ioniser. Length and diametre of overbridge are such that they provide time of 10-12 sec for mass staying, which is sufficient to achieve residual charge of static electricity by voltage value of 20-500 V/cm. Invention makes it possible to produce cheap items by simple method with density of 0.99-1.00 g/cm3 and flexural length of at least 42 MPa, to recycle wastes, improve ecology and reduce toxicity of items.
EFFECT: production of cheap items by simple method with density of 0,99-1,00 g/cm3 and flexural strength of at least 42 MPa, recycling of wastes, improved ecology and reduced toxicity of products.
1 dwg, 1 tbl
FIELD: wood industry.
SUBSTANCE: invention pertains to production of chipboards. The board includes bottom and top surface layers with fine particles, and an intermediate layer with more coarse particles is placed between these surface layers. The intermediate layer has various density in the areas, where the board is supposed to be attached to an other object. The chipboard production method includes even distribution of fines followed by generation of the first particle matrix to form a bottom surface layer, distribution of more coarse particles followed by generation of the second particle matrix above the fine particle matrix using a distribution device so that at least in one zone the coarse particles are applied in a more thick layer than at least in one surrounding area, even distribution of the fine particles followed by generation of the third coarse particle matrix to form a top surface layer and compression of the first, second and third matrices, whereby the intermediate layer thickness remains virtually unchanged, so the intermediate layer has various density.
EFFECT: produced chipboards feature increased soundproof and heat-insulating properties, and light weight, that facilitates efficient shipment of the processed boards.
9 cl, 13 dwg
SUBSTANCE: method of construction beam production out of modified wood involves wood modification by squeezing fine metal powder into lumber cavity, with further formation of lumber face by rolling even surface before feeding it into reverse mold, where lumber is put by metal faces together. Then ultra high frequency (UHF) current is applied to beam ends to mollify metal powder, and modified materials are connected in reverse mold by pressing, at the moment of which UHF current is switched off, and obtained seam is cooled, finished beam is extracted from reverse mold freeing it for next beam pressing.
EFFECT: obtainment of construction beams of specified shape and strength properties.
1 dwg, 1 tbl
SUBSTANCE: converted timber or chip plate is made of eucalyptus breeds and connected by means of binding substance containing isocyanatic or phenol polymeric compound. Eucalypti of the following species were selected: Bluegum (E. Globulus), Karri (E. Diversicolor), Sydney Bluegum (E. Saligna), Marri (E. Calophylla) or Jarrah (E. Marginata).
EFFECT: high surface strength, wet resistance and low swelling ratios.
10 cl, 1 dwg
FIELD: technological processes.
SUBSTANCE: method includes grinding of woodworking wastes or plant materials, mixing with binder and subsequent pressing. Binder is liquid sodium glass that contains dry substance of glass 30-70; water 70-130 wt parts; at that cold pressing is executed, and binder is taken in amount of 20-50 wt parts per 100 wt parts of wastes. Binder may additionally contain hardener - salts of mineral acids in amount of 3-5 wt parts, in this case liquid sodium glass is preliminarily homogenised with hardener.
EFFECT: invention makes it possible to prepare ecologically clean, thermally resistant and moisture resistant items.
8 cl, 3 tbl
SUBSTANCE: rush stems are flattened in rolls, laid mutually perpendicular and milled into shreddings with particle size of 5-15 mm or into powder with particle size of 100-300 mm, saturated with water solution of bakelite resin in amounts of 1-2% or with water solution of wax emulsion, or mixed with heated up to liquid state bitumen or with particles of wire in amounts of 0,5-2%. Then the raw material is heated up to release of proper bonding agents, pressed either in pressing molds or through shaped hole of pressing mold with required products forming and is hold in acclimatisator until cooling.
EFFECT: invention allows for reducing energy consumption and obtaining strong, durable and ecologically clean construction materials, products and structures.
2 cl, 4 ex
SUBSTANCE: reed laminose material is made of dace or southern reed, contains odd, maximum 15, quantity of the layers executed from cut lengthways on thin strips of a reed stalks and laid in an is mutual-perpendicular direction. Strips are impregnated by carbamide, urea-formaldehyde or phenol-formaldehyde gluing compositions with hot solidification and are pressed in compression moulds at temperature 100-140°C and pressure 0.8-1.5 MPa. Equipment for manufacture of a reed-layered material has the conveyor consisting from plates for feed of a reed slab, the slab piercing gear, the directive conveyor connected to hydraulic system and executed with possibility of its movement by the rail together with a cutting frame by means of the longitudinal feed gear. Equipment also contains the horizontal dividing device for reed layer partitioning off from a total mass, directive bulwarks for the reed layer feed on a slab, glue feed system for reed impregnation by glue, the elevating device, the device for lowering of a reed layer on size of the removed layer, with possibility of feed of the received laying in system of hydraulic pressing for formation of a reed-layered material.
EFFECT: invention will allow receiving a material with high technological properties.
2 cl, 5 dwg
FIELD: wood=working industry, in particular, production of presswork from particles of vegetable origin.
SUBSTANCE: in the method for production of composite boards without addition of a binder, from a hydrolyzed lignocelluloses material, before hot pressing, the fibrous mat is formed with the use of a film of polyethylene, up to 0.2 mm thick, laid as a component of the external layers of the pressed composition. Pressing is performed at a temperature of 120 to 140 C and a unit pressure of 50 kg/sq.cm at a duration of pressing of 1 min/1 mm of the board thickness.
EFFECT: enhanced moisture resistance of composite material.
FIELD: wood-working industry, and namely the method of manufacture of the structural unit, in particular, slab of wood fiber, wood chip and/or sawdust, and pressing of fiber, chip, and/or sawdust with applied glue for formation of the structural unit, in particular, slab.
SUBSTANCE: at first the wood fiber, chip and/or sawdust are decomposed by steaming into liquid components and hard components. The liquid components are separated and cooled inside the closed hermetic system up to their discharge from the system. During this process the ecological load caused by odor is sharply reduced. The invention also includes a device for realization of the method and a structural unit manufactured on it.
EFFECT: produced an ecologically pure method for manufacture of slabs and a device for its realization.
46 cl, 3 dwg
FIELD: wood-working industry; production of pressed building items.
SUBSTANCE: the group of inventions is pertinent to the field of production of pressed building items made out of plant roughage and may be used in wood-working construction industries and other branches of economy. The panel made by pressing out of a carpet without synthetic binding materials consists of a mixture of a birchen bark ground up to a faction of 40-5000 microns and a filler predominantly out of cellulose filaments at the following ratios in respect to the total dry solid matter (in mass %): a birchen bark - 60-95, cellulose filaments - 5-40. In an alternative version of the panel, which is made the same way as the above, the outer surfaces of the carpet are strengthened with lingo-cellulose-polymeric compound including an excelsior and the KF-EC resin with a hardener or an excelsior and triturated secondary polymer taken in amount of 10-12 mass % to the weight of the excelsior. At that the share of the lingo-cellulose-polymeric compound makes 20-40 % to the total dry weight of the carpet. The method allows to use a ground birchen bark without synthetic binding agents for shaping a carpet and its consequent pressing. At that for a carpet formation they use the birchen bark ground up to a faction of 40-5000 microns, and a filler mainly made out of cellulose filaments taken in the following ratio in respect to the total dry weight(in mass %): a birchen bark-60-95, cellulose filaments - 5-40. Before formation of the carpet the filler is moistened up to 18-20 % of absolute humidity and is mixed with ground birchen bark. The carpet is formed with a thickness equal to 200-300 % of the thickness of a finished panel. The group of the inventions ensures simplification of the production process, reduction of its cost, expansion of the range of the List of items.
EFFECT: group of the inventions ensures simplification of the production process, reduction of its cost, expansion of the range of the List of items.
8 cl, 1 tbl
FIELD: production of plate materials of the splint-slab type, applicable in the wood-working and building industries.
SUBSTANCE: the method consists in processing of husk particles by a binder containing urea-formaldehyde resin, ammonium chloride, Aerosil butadienstyrene methacrylic latex, forming of the mat, cold prepressing and hot pressing. The binder instead of ammonium chloride contains ammonium fluosilicate at the following relation of the components, mass percentage: urea-formaldehyde resin - 82.8 to 93.4, ammonium fluosilicate - 0.6 to 1.2; butadienstyrene methacrylic latex - 4.0 to 12.0, Aerosil - 2.0 to 4.0.
EFFECT: enhanced physico-mechanical characteristics of the plates.
FIELD: production of building materials, applicable in the wood-working, furniture and building industries.
SUBSTANCE: the method consists in mixing together of wood particles with urea-formaldehyde resin, butadienstyrene methacrylic latex, ammonium chloride and Aerosil, forming of the mat, cold prepressing and hot pressing. The binder instead of ammonium chloride contains ammonium fluosilicate at the following relation of the components, mass percentage: urea-formaldehyde resin - 82.8 to 93.4, ammonium fluosilicate - 0.6 to 1.2, butadienstyrene methacrylic latex - 4.0 to 12.0, Aerosil - 2.0 to 4.0.
EFFECT: enhanced physico-mechanical and ecological characteristics.
FIELD: wood-working industry, in particular, methods for decreasing the content and emission of formaldehyde intended for fiber boards.
SUBSTANCE: the process of production of fiber boards is conducted with employment of aminated adhesive resins with an addition of substances binding the formaldehyde by compacting in running presses or continuous-action presses and by cooling. After compacting, but before cooling the fiber board is subjected to a short-time curing at 80 to 100C during 6 to 16 hours, depending an the expected level of decrease and emission of formaldehyde and used parameters of the process of production.
EFFECT: reduced content and emission of formaldehyde in the fiber board.
5 cl, 3 dwg, 3 ex
FIELD: wood-working industry, applicable in furniture, building, packaging and machine-building branches of industry.
SUBSTANCE: the method consists in the fact that filings and sawdust composed of: coniferous needles - 80%< filings - 10%, sawdust - 5% and wood fibers - 5% are added to the ground pulp of coniferous needles. The obtained mass is fed to the forming unit, which forms the sheets, which are fed to a press, where they are compacted at a pressure of not more than 10 Mpa at a temperature of not higher than 250C during not longer than 30 S. The obtained coniferous-needle material is cooled down, packed and delivered to the consumers.
EFFECT: produced material with breaking load, high density, low water absorption.
1 dwg, 1 tbl
FIELD: manufacture of substantially flat articles, for instance particle boards and other articles of industrial wood residue or vegetable raw materials by hot pressing thereof.
SUBSTANCE: method for particle board production involves performing hot molding at temperature of 120-200°C and under pressure of 2.5 - 30.0 MPa for panel forming. Industrial waste, molasses, concentrated corn steep or mixture thereof are used as binding material, wherein lime and starch-containing materials are added to mixture including industrial wood residue or vegetable raw materials and the binding material before hot molding operation beginning.
EFFECT: increased ecological safety and increased strength of the panels.
4 cl, 1 tbl, 1 ex
FIELD: production of plate material.
SUBSTANCE: proposed composition is made on base of dispersed raw material with modifying additive; plate material is made by molding the said composition at temperature of 160-190°C and pressure of 65-95 kg/cm2; molding time of 1 min per 1 mm of plate thickness. Used as modifying agent are acid by-products of oxidation of cyclohexane of caprolactam process at mass ratio to wood wastes of 50-70:30-50, respectively.
EFFECT: facilitated procedure of production of composition.
FIELD: wood-working industry.
SUBSTANCE: fiber or chip is dried, then it is mixed with glue at a temperature of below 100C, and a plate is formed at a temperature above 140C, wood is decomposed into solid and liquid components that are used as the glue. The installation for manufacture of the plate has a drying device, device for application of glue onto the fiber or chip, device for compaction, transport facilities for transferring the fiber or chip from the drying device to the device for application of glue, mixer having means for cooling the body. The contents of glue in a plate obtained with the use of the installation makes up 45 to 55 kg per cubic meter of plate.
EFFECT: produced plate with a lower contents of glue as compared with plates produced by the known methods.
31 cl, 2 dwg
FIELD: compositions used for manufacture of plates from wood laminate.
SUBSTANCE: composition for manufacture of plates contains rice shell or rice shell and sawdust mixture used as filler, liquid sodium glass having modulus of 2.4-3.6, and silicon dioxide. Artificial silicon dioxides or siliceous dust-like wastes of various industries may be used as silicon dioxides, with SiO2 content making at least 80%. Composition components are used in predetermined ratio.
EFFECT: improved strength and water tightness, and increased efficiency in utilization of various wastes.