(57) Abstract:The invention relates to machine building and repair industries and can be used for sealing cracks and sinks, for sealing and elimination of leaks, as well as the use of machines and structures. The material includes epoxy resin, rubber, aluminum, iron, polyamide resin, diethylenetriaminepenta and Tris-(diethylaminomethyl)-phenol as a percentage 8:5:35:41:6:4:1. 3 table. The invention relates to composite materials used for repair work, for sealing and elimination of leaks, cracks in the engineering and construction industries, as well as in the operation of machines and structures.Various polymeric compositions for sealing cracks and sinks, epoxy putty to eliminate the defects of the form, for example, the paste for sealing cracks in cylinder blocks of internal combustion engine [1, 2] and others, which are prepared on the basis of epoxy resins with various fillers.The disadvantages of the known compounds are long time of polymerization, up to 24 hours, and the exact ratio of components of the base material and hardener.The prototype predlagaemogo disadvantages.The aim of the invention is to reduce the time of polymerization up to 3 h, the mixture when ravnovyesnykh ratios of base and hardener, with a possible deviation of up to 30% without loss of strength characteristics of the material.The problem is solved by using as the curing of a mixture of polyamide resin, diethylenetriaminepenta, Tris-(diethylaminomethyl)-phenol as a percentage 55:36:9, as a filler mixture of aluminium powder and iron with a particle size of 5 to 50 μm, taken as a percentage of aluminum from 35 to 46, and iron from 54 to 65, as the modifier is butadiene rubber at the following percentage of the compound:
Epoxy Dianova resin From 15 to 17
Butadiene rubber is From 2.5 to 3.5
Fillers From 69 to 74
The hardener From 11 to 13
The use of metal-polymer compound is as follows: components of the material, the base and hardener are mixed in a ratio of 1:1 by volume with an allowable error of not more than 30% of the mixture is then applied to the prepared surface parts, the connection (or structural element) is fixed for 3 h, after which the mechanical processing of the material is measured compositions allow to conclude that, currently there is no known composition with similar distinctive signs. Therefore, the proposed arrangement meets the criterion of significant differences.Experimental studies allowed to determine the optimal ratio of components to obtain ravnovyesnykh ratios of base and hardener (see tab. 1).The most technologically advanced is the third song, where the volume ratio of the base and hardener 1:1.The compound is recommended for repair of fistulas, fissures, holes, corrosion in heating systems, water, containers, liquid and gas pipelines, as well as defects and damages units (blocks, cylinders, radiators, oil and gas tanks, housings).In table. 2 shows examples of possible compositions.Proposed for patenting material, having in comparison with the known epoxy compositions shortened curing time up to 3 h, and improved technological properties, expressed in the convenient form of a mixture of base and curing agent, also has high strength and adhesion characteristics, are given in table. 3.Ispolzovaniem time of polymerization, with good manufacturability. The compound includes a polymer base from a mixture of epoxy resin, synthetic rubber, filler and hardener amine type, characterized in that the quality of synthetic rubber it contains butadiene rubber as a filler mixture of powders of aluminum and iron in the mass ratio of the epoxy resin, butadiene rubber, aluminum, iron, respectively, 8: 5: 16:31, and as the amine hardener mixture of polyamide resin, diethylenetriaminepenta, Tris-(diethylaminomethyl)phenol, aluminum and iron, taken in the mass ratio, respectively 6:4:1:19:10.
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.