The invention is used for sealing, corrosion protection and protection against abrasive destruction of various materials like metal, wood, rubber, ceramics, brick, concrete, roofing material and other Sealant includes the best choice of thermoplastic elastomer, fillers, adhesive, antioxidant, organicheskiy solvent modifiers that increase the resistance of the sealant and its resistance to aggressive media, such as connections quinoid type, for example o,o-bis-(1,3,5-tri-tert-butyl-4-oxo-cyclohexadiene-2,5-yl)-p-anthinanixon or,o-bis-(1,3,5-tri-tert-butyl-4-oxocyclohexa-2,5-yl)-2-methyl-5-propyl-p-anthinanixon, or quinoid compounds in combination with metal oxides, for example with manganese dioxide, sulfur and/or metal oxides in combination with organic sulfides, such as tetramethylthiuramdisuphide, tetraethyleneglycol, 2-mercaptobenzothiazole, di-(2-benzothiazolylthio), or chlorides of metals of variable valence. The sealant has a higher heat resistance and resistance to aggressive environments, such as solvents, mineral oils, acids, alkalis and salts. 1 C.p. f-crystals, 3 tables.
The invention otnositsea the manufacture of concrete floors, roof panels of aluminum and other alloys, repair bituminous bituminous coatings, corrosion protection and abrasion destruction unprimed metal, concrete and brick surfaces:
- constructions, which are used outdoors and indoors;
- pipelines, drainage channels and pits;
- chemical equipment (when exposed to diluted mineral acids, alkalis, salts);
- hull, heads and wings of the car.
Operating temperature sealant from minus 60 to plus 120C.
There are various sealants similar purpose. For example, pasta AM-5 can be used for sealing joints in external walls precast concrete, sealing of window openings to protect from atmospheric corrosion (A. L. Labutin. Anti-corrosion and sealing materials based on synthetic rubbers; LH, 1982; S. 127-128). Disadvantages paste AM-5 is its dvukhkomponentnoi, small tear resistance, lack of durability, high values of residual strain and lack of resistance to aggressive environments.
Known sealant on the basis of butadiene-styrene thermoerosional destruction of bodies and bottoms of cars and refrigerator cars. The disadvantages of these and other sealants on the basis of the best choice of thermoplastic elastomers is a low heat resistance, weather resistance and cohesive strength of solid surfaces.
Known sealing composition (Patent of Russia 93058267/04, From 09 To 3/10 from 23.08.93, and gasket (Patent of Russia 93058266/04, From 09 To 3/10 from 23.08.93) and sealant (Patent 930058268 from 23.08.93), designed for the sealing and caulking of building structures, gluing construction tile, linoleum, wood, metal, rubber. The disadvantages of these sealants are also not sufficiently high heat resistance and resistance to aggressive environments.
The closest to the technical essence and the achieved result and prescription-based (definiltely TPR DST-R) sealant is taken as a prototype (Patent of Russia 93058266/04, 6 09 To 3/10 from 23.08.93), including the best choice of thermoplastic elastomer, a filler, an antioxidant, an organic solvent, the resistance of which is shown at maximum temperature +70 C, and the resistance to aggressive media is not in the material description.
The technical task of the present invention is to provide hermetically oil, acid, alkali and salt.
The technical result is achieved by the fact that the developed sealant, including the best choice of thermoplastic elastomer, adhesive, filler, antioxidant, organic solvent further comprises a chemical modifiers that improve the performance properties of the sealant, namely connection quinoid type, for example o,o-bis-(1,3,5-tri-tert-butyl-4-oxo-cyclohexadiene-2,5-yl)-p-anthinanixon or o,o-bis-(1,3,5-tri-tert-butyl-4-oxocyclohexa-2,5-yl)-2-methyl-5-propyl-p-anthinanixon, or quinoid compounds in combination with metal oxides, for example with Mno2or metal oxides in combination with sulfur and organic sulfides, such as tetramethylthiuramdisuphide, tetraethyleneglycol, 2-mercaptobenzothiazole, di-(2-benzothiazolylthio), or chlorides of metals of variable valence, such as the chlorides of iron, zinc, tin, in the following ratio of components:
The best choice TPR 100
The adhesive 40-100
Organic solvent 180-300
The invention is illustrated by examples of specific performance. Recipe hermetical TPR DST-30.
As the adhesive used intercommunale resin, phenol resin, rosin, etc.
The filler used soot, micro-talc, titanium dioxide, etc.
As an antioxidant use Agidol-1, etc.
As surface-active substances are used the product is processing a mixture of mono - and dialkylphenols ethylene oxide.
As modifiers use connections quinoid type, for example o,o-bis-(1,3,5-tri-tert-butyl-4-oxo-cyclohexadiene-2,5-yl)-p-anthinanixon or o,o-bis-(1,3,5-tri-tert-butyl-4-oxocyclohexa-2,5-yl)-2-methyl-5-propyl-p-anthinanixon, or quinoid compounds in combination with metal oxides, for example with Mno2or metal oxides in combination with sulfur and organic sulfides, such as tetramethylthiuramdisuphide, tetraethyleneglycol, 2-mercaptobenzothiazole, di-(2-benzothiazolylthio), or chlorides of metals of variable valence, such as the chlorides of iron, zinc, tin.
For comparison in the table. 1 shows the formulation of the sealant, selected as a prototype, and sealant based copolymer DST-R without modifiers.
Technology of preparation of sealant is serial is nitela, antioxidant, if necessary, an additional adhesive, such as phenol-formaldehyde resins, and surfactants, modifier, the remaining 1/3 part of the solvent and stirring for 60-120 minutes the solvent used butyl acetate, ethyl acetate, R-4, toluene, gasoline nefras and their mixtures in different ratios.
The results of the tests sealant proposed composition and prototype to mechanical stress are given in table. 2.
In table. 3 shows the resistance of the sealant to aggressive environments influence 26% NaCl, 20% NaOH solution, acids - 30% hydrochloric, 23% of chlorine and 10% nitric acid, solvents, hydrocarbon oils, temperatures, adverse weather effects.
As seen from the above table. 2 and 3, the sealant of the proposed composition has a high mechanical characteristics, saves them at elevated temperatures up to 120C, while maintaining reliable protection of the surface.
The proposed sealant retains its performance properties when exposed to solvents such nefras, butyl acetate, acetone, toluene, mineral hydrocarbon oils; resistant to atmosfernomy composition tested in experimental conditions, the FSUE “December”.
1. A sealing composition comprising a butadiene-styrene thermoplastic elastomer, fillers, adhesive, antioxidant, organic solvent, characterized in that it additionally contains modifiers, such as connection quinoid type, for example o,o-bis-(1,3,5-tri-tert-butyl-4-oxo-cyclohexadiene-2,5-yl)-p-anthinanixon or o,o-bis-(1,3,5-tri-tert-butyl-4-oxocyclohexa-2,5-yl)-2-methyl-5-propyl-p-anthinanixon, or quinoid compounds in combination with metal oxides, for example with manganese dioxide, sulfur and/or metal oxides in combination with organic sulfides, such as tetramethylthiuramdisuphide, tetraethyleneglycol, 2-mercaptobenzothiazole, di-(2-benzothiazolylthio), or chlorides of metals of variable valence in the following ratio of components, wt.h.:
Butadiene-styrene thermoplastic elastomer 100
The adhesive 40-100
Organic solvent 180-300
2. Sealant under item 1, characterized in that it further comprises a surfactant, for example, the product is processing a mixture of mono - and dialkylphenols ethylene oxide in amounts
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.