Multilayer combined heat insulation fire protection material

FIELD: textile, paper.

SUBSTANCE: invention relates to the production of inorganic insulating materials connected mechanically of woven and nonwoven materials that may be used in a temperature range from -200C to 1000C for high temperature insulation of industrial and domestic equipment, as well as sound insulation in construction, transportation and other industries. Multilayer combined heat insulation fire protection material comprising woven and nonwoven materials layers. Woven and nonwoven fabrics are made of amorphous chopped glass fibers and super, ultra-thin crystalline ceramic fibers. One nonwoven layer comprises crystalline ceramic fibers packed with coefficient of fullness not less than 0.9, the other nonwoven layer is composed of amorphous glass fibers, non-woven materials on the outside on both sides are veneered with layers of glass fibre, including clad with metal foil. The layer materials connection is made mechanically with fiber glass filament with a stitch of 3 to 60 mm lengthwise and distance between stitches from 5 to 330 mm, the resulting material has a thickness of 4 to 50 mm, instead of nonwoven layers of amorphous glass and crystalline ceramic fiber the material comprises a nonwoven layer of amorphous glass and crystalline ceramic fibers mixture. Crystalline ceramic fibers with a diameter less than 1 mcm fill the space between the amorphous glass fibers with a diameter of 6-20 mcm, which leads to increased density and lower material thermal conductivity, on both sides from outside the nonwoven materials are veneered with the layers of glass fibers of fillaments having a porous structure with a pore size 3.10 angstroms, which shrink to 8-10%, compress the inner layers and increase the strength of the composite material while heating, instead of the nonwoven material of amorphous glass fibers the nonwoven material layer of crystalline ceramic fibers is used which almost do not have shrinkage (1%) while heating to 1000C, which allows to keep the original geometric material dimensions, instead of the nonwoven material made of amorphous glass fibers the nonwoven material layer of amorphous basalt fiber is used, the fibre of amorphous glass fiber containing 5 - 18% of ferric oxide is used instead of the glass tissue including clad with metal paper, the nonwoven material of ECR-type glass amorphous filaments is used instead of the nonwoven material of crystalline ceramic fibers, the layer of fabric of crystalline ceramic fibers and the layer of fibreglass mesh of E-type amorphous filaments are used instead of the glass tissue, the woven and nonwoven materials are preliminarily veneered with the glass tissue along the perimeter of the material end grain before sewing.

EFFECT: creating a new multilayer composite environmentally friendly material with high thermal insulation properties and performance characteristics, providing an effective reduction in the heat flux over a wide operating temperature range.

9 cl, 1 dwg



Same patents:

FIELD: chemistry.

SUBSTANCE: primary ground material for a carpet, comprising at least a first fibre layer and a second fibre layer, characterised by that both fibre layers are layers of nonwoven material consisting of randomly laid fibres and that both fibre layers have the same composition on the entire fibre layer, where linear density of fibres is in the range of 1 dtex to 25 dtex, wherein both fibre layers contain at least two different polymers and at least one polymer contained in the first layer, different from the polymers contained in the second layer.

EFFECT: obtaining carpet material.

13 cl, 2 tbl

FIELD: technological processes.

SUBSTANCE: invention relates to piling of fibrous materials and method of its arrangement. The piling comprises at least two layers of unidirectional carbon fibres going in different directions, in which each unidirectional layer is connected on at least one its surface with an adjacent layer of non-woven material from thermoplastic fibres, besides, between two serial layers of unidirectional carbon fibres there is at least one layer of non-woven material from thermoplastic fibres. Connection between each unidirectional layer and each layer of non-woven material adjacent to it is provided due to the specified layer of the non-woven material, by means of welding spots resulting in intermittent welding. Specified welding points also provide for cohesion of piling, at the same time at least one welding spot includes perforations, which form channels for diffusion of resin and going into thickness of piling from fibrous materials across the piling layers.

EFFECT: invention provides for increased mechanical properties and drapability, absence of microcracks.

23 cl, 9 dwg, 5 tbl

FIELD: chemistry.

SUBSTANCE: subject of the invention is represented by a felt material, which contains, at least, one felt layer and one absorbent-containing layer, a method of the felt material manufacturing and the application of the felt material in textile products, footwear, for technical and medical purposes. The felt material in accordance with the invention possesses advantages of traditional felt materials with respect to heat- and sound-insulating properties and is air-permeable in the dry condition. However, due to special implementation the said material is waterproof in the wet condition and, therefore is suitable for sealing many types of materials. The felt material in accordance with the invention binds air moisture to a larger extent or binds water in a way, different from the traditional felt materials.

EFFECT: creation of the absorbent-containing material with high mechanical strength and good air permeability in the dry condition, in addition, the material must be suitable for air conditioning as, for instance, ventilation, dehydration and/or humidification of respective products made by means of it.

33 cl, 10 dwg

FIELD: chemistry.

SUBSTANCE: described are alkali-resistant fibrous products, laminates and methods of their manufacturing. The said product includes fibres and/or one or more fibre strands, with the most mass of the fibres in a mat being glass fibres and/or one or more strands of the glass fibres, the fibres, fixed together in places, where the fibres and/or one or more strands of the fibres intersect with each other for approximately 10 to approximately 35 wt %, counted per dry weight of the product, in a dry state, a binding agent, containing from 1 to approximately 60 wt % of an ureaformaldehyde binding agent and from approximately 45 to 99 wt % of a melamineformaldehyde binding agent, with bringing the total percent content to 100 and basing on the weight of the binding agent in the said product, fixation of the fibres in the said product. Higher resistance to alkalis is provided.

EFFECT: fibrous mat, fabric or cloth product possesses high resistance to alkali substances, which have pH, at least, 7.5 and especially to a saturated water solution of calcium hydroxide.

17 cl, 6 tbl

FIELD: chemistry.

SUBSTANCE: invention relates to sheet, its application and to polymer composition, used for obtaining film in form of sheet. Sheet is characterised by rate of water vapour passing (RWVP), equal to, at least, 100 g/m2day, with measurement being carried out in accordance with document ISO 12572(B) at 1 bar, 23C and 85% relative humidity. Sheet contains film, made of polymer composition, which contains polar thermoplastic elastomer, sterically hindered amine light stabiliser (SHLS), UV-absorber and aromatic amine radical scavenger. Film is less than 50 microns thick. Sheet is applied in clothes, as films in buildings and as packing material.

EFFECT: invention makes it possible to obtain polymer film with increased service term and sheet, characterised by high water vapour permeability.

8 cl, 1 tbl, 6 ex

FIELD: textiles, paper.

SUBSTANCE: nonwoven filtering material comprising a nonwoven web of an anion-exchange modified polyamide fibres and a system of fastening loops of stitching thread, additionally comprises a second fibrous layer of hydrophilic modified polyamide fibres, the stitching thread is used as the yarn from a mixture of hydrophilic modified polyamide fibres and the high-shrinkage viscose fibres with the content of the latter in the mixture of 30-40%, the stitching thread when fastening with the tricot laying forms the plush broaching located between the fibrous layers, at that the distance between the layers is 4-7 mm, and the ratio of the layer of the modified anion-exchange polyamide fibres, the stitching thread and the layer of hydrophilic modified polyamide fibres by weight is 1:0.2:0.5.

EFFECT: increased protective properties of the filtering elements of the respirators reduced suction coefficient due to increasing the stiffness of adjacency of the half-mask along the line of obturation.

1 dwg, 1 tbl

FIELD: textiles, paper.

SUBSTANCE: absorbing article according to the present invention comprises the following elements: a liquid-permeable upper sheet; a liquid-tight lower sheet; an absorbing element located between the upper sheet and the lower sheet for absorbing liquid, permeating through the upper sheet, and a receiving layer located between the upper sheet and the absorbing element for supplying liquid penetrating through the upper sheet to the absorbing element. The receiving layer comprises a nonwoven fabric perforated without physical or thermal deformation.

EFFECT: invention provides a method of production of nonwoven fabric, perforated without physical or thermal deformation, and an absorbing article comprising such nonwoven fabric.

24 cl, 8 dwg

FIELD: textiles, paper.

SUBSTANCE: invention relates to a method of manufacturing a velour carpet comprising the following steps: a) needle punching of the nonwoven material/nonwoven material "Mali" on the strip with the bristles using needle felting machine, in which course of implementation the shaggy nonwoven material/bearing nonwoven material is dragged through the strip with bristles and partially withdrawn back from the strip with bristles such that the fibers of the shaggy nonwoven material/bearing nonwoven material are located in the plane of the strip with bristles; b) separation of the nonwoven material from the strip with bristles using a shaft-brush; c) brushing the shaggy side prior to cutting loops. Additional nonwoven material/nonwoven material "Mali", especially shaggy nonwoven material/bearing nonwoven material is placed on the back side of the nonwoven material/nonwoven material "Mali", especially between first and second needle felting machines, between the steps a) and b).

EFFECT: increased density of fiber and increased stability of shag.

8 cl, 6 dwg

FIELD: textiles, paper.

SUBSTANCE: conductive material comprises a conductive nonwoven fabric containing conductive carbon fibers in an amount of 5-50 wt % in combination with cellulose fibers and/or synthetic fibers. The nonwoven fabric comprises conductive and non-conductive zones that contain sonicated sections. The conductive material is used in production of heating devices, electronic switches, electronic devices, RF modification devices. In the electronic switch the conductive nonwoven fabric is spaced from the opposite conductive layer and the electrical connection is formed between them when they are pressed to each other. The electronic switch is used in production of a garment, a glowing symbol. The electronic product comprises an outer surface intended for location of plurality of keys, a first conductive layer located under the keys, the second conductive layer, spaced from the first conductive layer, and in which when pressing one of the keys an electric connection is created between the conductive layers.

EFFECT: reduction of weight of the non-woven conductive fabric, increased strength of the multilayer flexible electronic device, reduction of the total resistance of heating devices.

19 cl, 21 dwg

FIELD: construction.

SUBSTANCE: panel comprises a leaf (3), arranged between two layers of coatings (2), made of fibrous structures (21), which are attached by means of a layer-forming or a connecting material, for instance, a polymer (22), a binder, a foamed polymer. The leaf usually contains foamed materials, thick felts, powder materials, semifluid materials, etc. Fibres (7) from fibrous structures (21) are pulled along one or more directions of inclination relative to layers of coatings (2) and usually by means of needle piercing, into the leaf (3), in particular, into foam plastic plates (4), which represent the leaf. The fastening material is also used to fix the pulled fibres (7) to do mutual fixation of leaf (3) components and coating layers (2).

EFFECT: invention may be used for economically efficient manufacturing of especially stable composite panels with a high number of leaf components, layers of coatings and alignment of pulled fibres of fibrous structures.

20 cl, 18 dwg

FIELD: production of insulating mats from fibrous materials, in particular, from mineral filaments.

SUBSTANCE: method involves forming and packaging felted insulating mats from fibrous materials, such as mineral filaments, composed of set of parallel strips moved by means of transportation device, said strips being moved through at least one branch of device, with following bringing of said strips to at least one feeding device for arranging strips one onto another to create at least one longitudinal stack of strips manufactured from mineral material; compressing said stack and cutting compressed stack of strips in transverse direction for forming felted insulating mats.

EFFECT: provision for producing and packaging of felted insulating mats without employment of large-sized transportation, cutting, compressing and packaging equipment, and reduced labor intensity.

13 cl, 6 dwg

FIELD: fire prevention systems, namely systems for protecting buildings against fire.

SUBSTANCE: fireproof composite base for bitumen roofing sheets includes first layer 1 and second layer 7 of mat formed by co-extrusion of polyester used as non-woven synthetic material; placed between said layers glass film 6; large number of longitudinally oriented reinforcing glass fibers 4.

EFFECT: improved strength and fireproof properties of sheet material.

2 dwg

FIELD: polymer materials in textile industry.

SUBSTANCE: spatial nonwoven warm-keeping material for clothing is manufactured by forming fibrous cloth from polyester yarn, joining its layers with liquid binder used in amount 12-15% of dry binder material per 85-88% of fibrous cloth, and drying at 100-120°C, said liquid binder being acrylic copolymer composed of 44-53% methyl methacrylate, 44-53% methyl acrylate, and 2.5-3% polymerization reaction stabilizer.

EFFECT: achieved high strength, elasticity, and incompressibility without loss of strength after dry cleaning.

3 tbl

FIELD: structurized wall-covering material with base side connected to ornamental side.

SUBSTANCE: base side and ornamental side are formed from dried non-woven materials, with fibers of ornamental side having mean diameter less than 10 micrometers. Base side is connected with ornamental side by means of flexible glue, and said composition has elongation exceeding 10% upon applying of maximal force.

EFFECT: provision for creating of wall-covering material having single structure, wider range of ornamental effects and good elasticity in covering of wall cracks resulted from processing.

5 cl, 1 dwg, 2 tbl

FIELD: fibrous structures, in particular, glass structures.

SUBSTANCE: fibrous structure comprises at least one layer of randomly distributed continuous yarns and at least one layer of reinforcing fabric such as layer of chopped yarns. Various layers of structure are joined to one another mechanically, by sewing or stitching, and/or chemically with the use of binder. Such structure may be produced by continuous or periodic process and is preferably used for manufacture of composite materials.

EFFECT: improved permeability and good deformation extent allowing this structure to be used for manufacture of various materials, preferably glass-based composites.

26 cl, 7 dwg

FIELD: method and device for introduction of a textile-auxiliary substance, essentially of an avivage agent, at hardening of the geotixtile by method of hydrodynamic hardening.

SUBSTANCE: the method of introduction of an avivage substance in the process of hydrodynamic hardening of the geotextile consisting of endless fibers consists in metering of the avivage substance directly to the liquid used for hydrodynamic hardening.

EFFECT: provided a uniform and controllable hardening of nonwoven matered at a hydrodynamic treatment.

7 cl, 2 tbl, 2 ex

FIELD: manufacture of nonwoven material having antistatic properties.

SUBSTANCE: nonwoven material has layer 1 of synthetic high-volume fiber-filler and carcass polypropylene cloth 2 arranged at both outer sides of layer 1 of high-volume fiber-filler, with layer 1 and cloth 2 being interconnected with one another through current-conductive filaments 3. Current-conductive filaments 3 are arranged at both outer sides of carcass polypropylene cloth 2, symmetrically with respect to one another to define cells 4 having length of sides not in the excess of 15 cm. Current-conductive filaments 3 are tangled with one another through thickness of material.

EFFECT: increased heat-shielding properties of material.

3 cl, 2 dwg

FIELD: aerogel composite material reinforced with high fibrous batting.

SUBSTANCE: aerogel composite material has reinforcement layer in the form of high fibrous batting, preferably combined with individual, short, randomly oriented microfibers and/or current conducting layers. Such composite material has high flexibility and drapeability, prolonged service life, increased resistance to sintering, high heat conductance in plane x-y, high electric conductance in plane x-y, reduced level of radio or electromagnetic interferences, and improved resistance to burning-through process.

EFFECT: increased efficiency and improved quality of composite material.

15 cl, 7 dwg

FIELD: technological processes.

SUBSTANCE: invention is manufactured out of thermostable or heat resistant fibres and may be used for manufacturing parts out of thermal structural composite material. Carbon nanotubes are in-built into fibre structure by means of their growing on the heat-resistant fibres of the basis.

EFFECT: provides more well-ordered tightening of parts and improvement of mechanical qualities.

31 cl, 6 dwg, 9 ex

FIELD: textile; paper.

SUBSTANCE: invention concerns mechanical clamping system for application in many articles, e.g. with absorbent devices, such as training trousers, diapers etc. The process includes manufacturing of laminate looped material with consequent fastening, viable for application in loop-and-hook fastening system of an article. The process also involves lamination of the first and second layers of material, resulting in non-woven loop material; and connection of the first and second material layers after their lamination, resulting in laminated material with consequent fastening of the layers.

EFFECT: improved convenience and lifetime, and lower cost of an article.

26 cl, 14 dwg