Composition for pinocamphone (options)
The invention relates to epoxy compositions to obtain a casting pinakamaganda used to fill gaps, insulation and hardening of the open frame and chassis electrical connectors by fill, seal and protect items of electronic equipment, to align the defective surfaces of insulation, gluing of metals and non-metals with large alternating gaps. The objective of the invention is to provide a composition for preparing pinakamaganda with achievement of the technical result in the form of high compressive strength and isolation. The composition contains epoxy Dianova resin, triglycerol ether polyoxypropyleneamine, ethylenediaminetetra, foam controller and polyhydroxylated. According to the second variant, the composition contains epoxy Dianova resin, triglycerol ether polyoxypropyleneamine, foam controller and polyhydroxylated. To obtain pinakamaganda part hardener - ethylenediaminetetra was replaced by low molecular weight polyamide resin and aliphatic polyamine. 2 C. p. F.-ly, 3 tables. The invention relates to epoxy compositions to obtain priming is s electrical connectors by pouring, for sealing and protection of items of electronic equipment, to align the defective surfaces of insulation, gluing of metals and non-metals with large alternating gaps.Known composition to obtain a foam, comprising the epoxy compound is a mixture of oligodendrocyte and epoksidnouretanovye resin, aliphatic polyamine, polyhydroxylated and foam controller (see USSR author's certificate 854950, CL 08 J 9/02 from 05.07.79 year). However, the foam obtained on the basis of this composition has a low strength characteristics.The closest in technical essence to the present invention is a composition (see USSR author's certificate 952890, CL 08 J 9/02, 08 L 63/00 from 20.03.81 g) comprising an epoxy compound, an aliphatic polyamine, polyhydroxylated and foam controller, as the epoxy compound contains a mixture of oligodendrocyte, epoxygenase and apocalypticism resins. However, the foam obtained on the basis of this composition, characterized by low values of adhesion strength at separation and compression strength, insufficient for filling foams that are used in units with high shock, vibration and compressive load, the milestone technical result in high compressive strength and isolation.This problem is solved in that the composition for pinakamaganda, including epoxy compound, polyamine, polyhydroxylated and foam controller, in accordance with the invention contains as an epoxy epoxy compounds Dianova resin and triglycerol ether polyoxypropyleneamine, and as polyamine - ethylenediaminetetra, in the following ratio, wt.h.: Epoxy Dianova resin - 75-85 triglycerol ether polyoxypropylene - 24-14 Ethylenediaminetetra - 22-30 foam controller - 1-1,5 Polyhydroxylated - 2,5-3,5 This task is solved in that the composition for pinakamaganda, including epoxy compound, polyamine, polyhydroxylated and foam controller, in accordance with the invention contains as an epoxy epoxy compounds Dianova resin, triglycerol ether polyoxypropyleneamine, as polyamine - ethylenediaminetetra and aliphatic amines, and further comprises a low molecular weight polyamide resin in the following ratio, wt.h.: Epoxy Dianova resin - 75-85 triglycerol ether polyoxypropylene - 24-14 Ethylenediaminetetra - 8-12
Aliphatic amines - 4-6
Low molecular weight polyamide sleduyushim way.In the first scenario
As the epoxy resin using a mixture of epoxy Dianova resin type ED-20 ED-16, ED-22 (GOST 10587-84) and triglycerol ether polyoxypropyleneamine marks Naproxin 703 (TU 2226-029-10488057-98) or Naproxe 603 (TU 2226-322-10488057-94), as polyamine - ethylenediaminetetra brand AF-2 (TU 2494-511-00203521-94). To achieve the required porous structure in the composition add foam controller brand silicone cap-2 "AND" (THE 6-02-813-73) or CEP-1 (TU 6-02-781-73) or brand Penta-483 (TU 2257-008-40245042-99) and the expander - polyhydroxy - liquid gidrofobiziruyuschey 136-41 (GOST 10834-76).It was established experimentally that the combination of the required viscosity with rate of expansion leads to the formation of the porous structure with fine closed pores. The necessary strength and density are provided with adjustable number of pores (due to the optimum content of the foam controller, foamer), characteristics of oligomeric environment and activity hardener.For experimental verification of the mechanical characteristics of the proposed composition for pinakamaganda cooked 3 recipes (see tab. 1) as follows.Mixed sample of epoxy resins, Epoxides brands 603, 703, penile mix, fill in the form for the preparation of the corresponding samples.Procompany in the first embodiment is different from the compound according to the second variant accelerated curing regime. The first is cured at a temperature of 20-25oC for 15-24 h and is characterized by a small value of viability (10-15 min).The second option
As a binder using a mixture of epoxy Dianova resin type ED-20 ED-16 (GOST 10587-84) and triglycerol ether polyoxypropyleneamine marks Naproxin 603 (TU 2226-322-10488057-94), Naproxin 703 (TU 2226-029-10488057-98) as the curing agent is a low molecular weight polyamide resin grade IS 300 (TU 2224-092-05034239-96), the amine hardener M-4 (TU 2494-342-10488057-98) or hardener 620 (TU 2413-007-17411121-98), ethylenediaminetetra brand AF-2 (TU 2494-511-00203521-94). In the song add foam controller brand silicone cap-2 "AND" (THE 6-02-813-73) or CEP-1 (TU 6-02-781-73) or brand Penta-483 (TU 2257-008-40245042-99) and polyhydroxy - liquid gidrofobiziruyuschey 136-41 (GOST 10834-76).Five formulations of the composition (see in table 4-8. 2) the proposed composition according to the second variant is prepared as follows.Mix sample resin type ED-20, Epoxide 703, foam controller, to the mixture was hanging hardeners M-4, 620, AF-2, AT-300, AC is in for mechanical testing with the aim of experimental verification of physical and mechanical properties.Procompany the second option is viable for at least 1 h and cures at a temperature of 20-25oWith in 48 hoursDetermination of density according to OST 92-0903-78 and limit the compressive strength according to OST 92-1463-77 carried out on samples - cubes prepared as follows.Composition for pinakamaganda pour into pre-greased with vaseline or grease metal open form with the internal cavity in the form of cubes with edge length 30,00.5 mm, filling it 2/3 of the height and utverjdayut at a temperature of 20-25oC.Excess pinakamaganda cut by a hacksaw along the top edge of the form, to extract samples of pinocamphone, which determine the density and compressive strength.To determine the tensile strength of the adhesive joints of aluminium alloy AMg6 at the margin OST 92-1476-78 boss of aluminum alloy with a diameter of 35 mm is subjected to a sandblasting treatment. Then double-degrease with acetone GOST 2768-84 or neprasam GOST 8505-80 and dried. The boss put on top of the strips of paper with a release coating and pour the prepared composition of pinakamaganda layer thickness of not less than 20 mmAfter foaming and curing on the surface is at with glue VK-9. Utverjdayut at specific pressure of 0.05 MPa at a temperature of 20-25oC for 2 days. Then carry out tests at a temperature of 15-35oC.The results of physical-mechanical tests of the formulations of the two proposed options pinakamaganda and prototype are presented in table. 3.From table. 3 shows a positive technical result: on the mechanical characteristics of the proposed composition according to the first and second variants of the order exceeds the prototype of the ultimate strength in compression and almost twice the strength at the margin.Therefore, caulking compounds according to the invention, it is expedient to apply in units of equipment experiencing high vibration, impact and compressive loads.
1. Composition for pinakamaganda, including epoxy compound, polyamine, polyhydroxylated, foam controller, characterized in that it contains as epoxy epoxy compounds Dianova resin, triglycerol ether polyoxypropyleneamine, and as polyamine-ethylenediaminetetra in the following ratio, wt.h.:Epoxy Dianova resin 75-85Triglycerol ether poly is p>2. Composition for pinakamaganda, including epoxy compound, polyamine, polyhydroxylated, foam controller, characterized in that it contains as epoxy epoxy compounds Dianova resin and triglycerol ether polyoxypropyleneamine, and as polyamine - ethylenediaminetetra and aliphatic amines, and optionally contains nizkomolekulyarnoe polyamide resin in the following ratio, wt.h.:Epoxy Dianova resin 75-85Triglycerol ether polyoxypropyleneamine 24-14Ethylenediaminetetra 8-12Aliphatic amines 4-6Nizkomolekularnah polyamide resin 18-24Foam controller 1-1,5Polyhydroxylated 1,5-2,5
FIELD: polymer materials.
SUBSTANCE: invention relates to novel liquid molding compositions comprising water-soluble or water-foaming polymer, which can be employed to improve water and moisture resistance as well as for waterproofing operation, for instance of waterproofing of cables. Composition contains water, water-soluble or water-foaming organic polymer obtained from monomer mixture containing 25 to 90 wt % of nonomer(s) selected from group including (meth)acrylamide and (meth)acrylic acid or salts thereof; 10 to 75 wt % of nonomer(s) selected from group including C8-C30-alkylethoxylated (meth)acrylamides, C8-C0-alkyl(meth)allyl ethers and C8-C30-alkylethoxylated (meth)allyl ethers; and water-miscible organic volatile liquid. Polymer is present in the form of discrete particles with average cross dimension below 10 μm. Invention further provides a method for improving water and moisture resistance of articles and/or preventing introduction of water into interior of article by way of contacting this article with above-indicated composition. Method of imparting waterproofing to outside or internal components of a cable comprises contacting at least one internal component with liquid molding composition. Invention allows preparation of composition capable of protecting fiber-optic cable.
EFFECT: enhanced waterproofing properties.
15 cl, 2 tbl, 11 ex
FIELD: hermetic based on law molecular siloxane rubber, in particular sealing composition.
SUBSTANCE: invention relates to sealing composition vulcanized by reaction with air moisture. Claimed rubber-based composition comprising zinc oxide, ethyl silicate, and diethylaminomethyltriethoxysilane, contains additionally pulverized grinded quartz. As a variant hermetic also contains chalk and/or dolomite. Composition of present invention is useful in sealing of various conjunctions operating in wide temperature limits where oil and gasoline resistance is required.
EFFECT: hermetic with low-cost components and excellent in operating characteristic.
1 cl, 2 tbl, 7 ex
FIELD: chemical technology.
SUBSTANCE: invention relates to a cross-linking binding composition based on an aqueous base comprising (A) an aqueous dispersion of hybrid resin based on polyester-polyacrylate that comprises 50-90 wt.-% of polyester and 10-50 wt.-% of polyacrylate. Hybrid resin is prepared by grafting the composition of unsaturated monomers polymerized by radical mechanism on partially unsaturated hydroxy-functional polyester; and (B) organic polyisocyanate wherein partially unsaturated hydroxy-functional polyester prepared by reaction of mixture of polycarboxylic acid and, optionally, monocarboxylic acids with one or some (cyclo)aliphatic alcohols wherein 0.5-6 mole% of acids and/or alcohols show the unsaturation level of ethylene type. The composition of unsaturated monomers polymerized by radical mechanism comprises a mixture of hydrophobic and hydrophilic monomers. Also, invention relates to a method for preparing composition used for covers comprising above said an aqueous binding composition and substrate with applied cross-linked cover prepared by applying such composition for cover. Invention provides preparing the composition with retaining exploitation indices as result of excessive foam formation and differing with acceptable values of working life and hardening rate.
EFFECT: valuable properties of composition.
16 cl, 3 tbl, 19 ex
FIELD: power industry; petrochemical industry; metallurgy; municipal services and other branches of economy; production and use of sealing materials.
SUBSTANCE: the invention is pertaining to the composition for production of the lyophobic graphitic materials, in particular, to production of composite materials used for grease seals predominantly ensuring potting of "stock-body" type mobile and stationary "body-cover" joints of the pipeline fittings used in power industry, petrochemical industry, metallurgy, municipal services and in other branches of economy. The composition contains the following components( in mass %): 70-90 - black leads, 1-3 - low molecular weight polyethylene of a molecular mass 150-300, 2-7 - sodium silencer, 1-2 - sodium nitrite, 3-6 - top-finished carbon fibers, 2-7 - suspension of polytetrafluoroethylene at a ratio of polytetrafluoroethylene to water of 1:10, 1-5 - glycerin. The invention ensures a high wear-resistance of articles due to a decrease of metallic components corrosion.
EFFECT: the invention ensures a high wear-resistance of articles due to a decrease of metallic components corrosion.
FIELD: oil and gas industry, particularly to prevent fluid migration in channels of the support in working, nonworking or conserved state.
SUBSTANCE: composition includes saponified tall oil pitch, condensed spent sulfite-alcohol liquor and water preheated up to 85-96°C. The components are taken with the following amounts (by weight): saponified tall oil pitch - 35-40;, condensed spent sulfite-alcohol liquor 15-25; and preheated water - remainder. Composition may additionally include dispersed mineral or organic filler taken in amount of 5-80% by weight counting on composition mass. The composition may be used to isolate crack-porous beds during well drilling or as buffer solution during casing pipe cementation.
EFFECT: prevention of gas migration due to forming sealing screens and prevention of fresh headwater and atmosphere pollution, as well as elimination of fire and explosion hazard in neighboring territories.
4 cl, 2 ex, 2 tbl
FIELD: foam-sealing agents.
SUBSTANCE: invention describes a heat-resistant foam-sealing agent comprising polyorganosiloxane rubber, zinc oxide, oligohydride siloxane, amino-compound and vulcanization catalyst. Heat-resistant foam-sealing agent comprises polydimethylmethylphenylsiloxanediol as polyorganosiloxane rubber, oligomethylhydride siloxane as oligohydride siloxane, aminosilane as amino-compound and polyorganoelementosilazane resin as a catalyst in the following ratio of components, mas. p. p.: polydimethylmethylphenylsiloxanediol, 100; zinc oxide, 40-80; oligomethylhydride siloxane, 2.5-4.8; aminosilane, 0.1-0.3; polyorganoelementosilazane resin, 1.5-3.5. Invention provides the development of technological foam-sealing agent showing sufficiently long working life for pouring article to be sealed (30 min, not less), without toxicity, possessing internal adhesion to different backings, retaining elasticity at temperatures from -100°C to +300°C and vulcanizing at room temperature.
EFFECT: improved and valuable properties of agent.
5 cl, 2 tbl, 5 ex
FIELD: manufacture of sealing materials on base of liquid thiocol for sealing-up fuel compartments and structural members of flying vehicles; aerospace engineering; automobile manufacture; shipbuilding.
SUBSTANCE: proposed method includes mixing the sealing and vulcanizing pastes containing dibutyl phthalate with vulcanization accelerating agent; prior to preparation of vulcanizing paste, carbon nano-modifying agents are additionally introduced into dibutyl phthalate and dispersion thus obtained is treated by ultrasound. Used as carbon nano-modifying agents is fulleroid multi-layer nano-modifying agent Astralene or open carbon nano-tubes in the amount of 0.037-0.069 or 0.014-0.020 parts by mass, respectively per 100 parts by mass of vulcanizing paste.
EFFECT: enhanced tensile strength; reduction of relative elongation; enhanced fuel resistance properties and fungus resistance.
3 cl, 1 tbl, 8 ex
FIELD: production of polymeric compositions applied to pressurization of electrodevices.
SUBSTANCE: the invention is pertaining to the field of production of polymeric compositions applied to pressurization of electrodevices, for example, of low-voltage and high-voltage coils of transformers, chokes, etc. The polymeric composition includes a titaniumsiliconorganic oligomer, a KP-303 compound based on oligostheracrylate and a non-saturated epoxy-ether resin. The technical result of the offered invention is an increase of the maximal operating temperature, a decrease of a temperature coefficient of expansion, an increase of the heat conduction, provision of crack- resistance and positive stability to a heat shock. The declared technical task is reached due to the fact, that the composition additionally contains quartz, aluminum oxide, talcum.
EFFECT: the invention ensures an increased maximal operating temperature, a decreased temperature coefficient of expansion, an increase of the heat conduction, provision of crack- resistance and positive stability to a heat shock.
FIELD: polymer materials.
SUBSTANCE: sealant destined to seal metallic packaging joints contains, wt %: synthetic latex with 48-55% solids 100, carboxymethylcellulose sodium salt 2.045, mixture of polyethylene ethers of mono- and dialkylphenols 1.11, disperser (sodium tripolyphosphane) 0.37, casein 0.185, oleic acid 0.37, foam suppressor 0.407, pigment filler 5,92, and water 60.125.
EFFECT: increased viscosity, improved homogeneity, enhanced adhesion, reduced drying time.
SUBSTANCE: invention relates to sealing compositions providing tightness in vacuum and vacuum-autoclaving process of forming polymer composite materials for use in aircraft industry, mechanical engineering, and other national economy areas. Sealing composition, showing high gas impermeability, heat resistance, cohesion strength, adhesion to metal and polyamide film and providing tightness for polyamide film sacs in vacuum formation process at temperature up to 180°C and negative pressure up to 1 kg/cm2 and in vacuum-autoclaving process at pressure 2 kg/cm2 to achieve temperature 125°C, ageing for 30 min, and further heating to 180°C, contains butyl rubber, polyisobutylene with molecular weight 10000-25000, chalk, asbestos, mineral oil, and alkylphenol-formaldehyde resin.
EFFECT: improved performance characteristics.