256 results about "Rubber solvent" patented technology

A patch plug is provided that has a coating continuous over both the patch and plug portions, providing a strong and continuous seal to prevent seal failure and water and air introduction. The patch and plug portions may be formed separately, each with a coating element, and fused together in a press which bonds the coatings of the patch and plug portions together to form a single, continuous coating. Means known in the art, for example rubber cement, can also be employed to further ensure a firm seal between the patch plug and the tire. Methods of manufacturing and using the patch plug are also taught herein.

The invention relates to a bonding rubber material, especially provides a binder or a thermosetting molding rubber cement for bonding and reinforcement of door cores of a fireproof door an antitheft door and bonding and production of building and decoration materials, and aims to provide a composite rubber material, with low cost, good bonding strength and rapid surface dry, which can be cured at room temperature. The composite rubber material is characterized in that the composite rubber material is composed of a water-based A material and a polyurethane prepolymer-containing B material, the ratio (weight ratio) of the A material to the B material is 0.5-1:0.5-1, the A material comprises 30-70% of water and/or water glass and/or silica sol, 19.5-48% of organic modifiers, and 12-55% of additives, the B material comprises polyurethane prepolymers with a content of being more than 30%, 8-24% of -NCO group, and 0-30% of synergists, The synergists are one or combination of more than one selected from a polymerization inhibitor, a blocking agent, a water glass curing agent and a diluting agent. The composite rubber material is advantaged by good bonding strength, flame retardance, thermal insulation, low price and environmental protection.

The invention relates to a rubber-cement grouting material applied to a semi-flexible pavement, belonging to waste recycling field in the environmental protection field and the application field of highway engineering. The rubber-cement grouting material applied to the semi-flexible pavement is characterized by being formed by mixing the components based on parts by weight: 100 parts of cement, 10-50 parts of pulverized fuel ash, 5-30 parts of expanding agent, 1-30 parts of rubber powder, 10-50 parts of sand, 0.1-5 parts of water reducing agent, 0.1-5 parts of early strength agent and 40-70 parts of water. The rubber-cement grouting material has high fluidity and anti-cracking property, lower contraction and higher early strength, and can meet the groutability and pavement performance of the semi-flexible pavement material.

A heat insulating reflecting anticorrosive paint, in a coordinated system composed of bottom, surface and middle layer paints coated on surface of concrete or metal, is suitable for sea climate and chemical engineering air severe atmosphere, which breaks convention of making the heat reflecting surface paint in white in prior market. Surface paints in present coordinated system is added with dye infrared transparent block powder with special function or gray, yellow and brown series made of titanium yellow powder so that the color of paints is versatile, which enlarges use scale. The whole paint system has excellent heat insulating, solar heat reflecting property by rational match and good heavy-duty anticorrosive property as well as excellent weather resistance. Thickness of total dry film does not exceed 250microns. Heat reflecting effect of surface paint in various colors is similar to that of white paint which has greater reflectivity and insulating effect. Compared with a tank coating aluminum powder chlorinated rubber solvent, the tank coating the paint has inner temperature 15 DEG.. C lower, surface temperature 23 DEG.. C.

Provided for herein is a process to produce an essentially homogeneous single liquid phase hydrocarbon-rubber cement from a polymer slurry comprising a hydrocarbon-rubber, a diluent, and unreacted monomer(s), the process comprising:

• • (a) contacting the polymer slurry with a hydrocarbon solvent; and
  • (b) removing the diluent in amounts not sufficiently more than is necessary to produce the essentially homogeneous single liquid phase hydrocarbon-rubber cement wherein the mass fraction of monomer(s) in the hydrocarbon-rubber cement, based on the total amount of hydrocarbon-rubber present in the hydrocarbon-rubber cement, is less than the mass fraction of monomer(s) in the hydrocarbon-rubber slurry, based on the total amount of hydrocarbon-rubber present in the hydrocarbon-rubber slurry,
  • wherein the diluent comprises a hydrofluorocarbon.

The invention relates to mineral fiber-modified flexible rubber concrete. The mineral fiber-modified flexible rubber concrete comprises rubber cement concrete, chopped basalt fiber and a dispersant methylcellulose, wherein the rubber cement concrete consists of rubber particles, cement, sand, stones, a water reducing agent and water; and the chopped basalt fiber is 0.1 to 0.5 percent of the volume of the rubber cement concrete, and the dispersant is 0.05 to 0.2 percent of the weight of the water. The concrete is applicable to road engineering, and has high compressive strength, bending tensile strength and deformability, and low modulus of elasticity.

The invention discloses a cement concrete pavement structure provided with continuous steel bars. The pavement structure comprises a base layer. Roller compacted concrete is adopted in the base layer. A broken stone hardcore is laid below the base layer. Cement concrete surface layers are laid on the base layer. The cement concrete surface layers include the upper surface layer and the lower surface layer. Rubber cement concrete is adopted in the upper surface layer. A transverse induction kerf is arranged on the edge of the upper surface layer on the left side of the driving direction. The continuous transverse steel bars, the continuous longitudinal steel bars and a slidable support are arranged at the portion, within the range of a carriageway and one half of the width (L) of a hardened verge, of the lower surface layer. Plain concrete is formed at the portion, within the other half of the width (L) of the hardened verge, of the lower surface layer. A longitudinal joint is arranged at the portion one half of the width of the hardened verge. A bituminous concrete anti-scouring layer is arranged between the base layer and the surface layers. The pavement structure can solve the problems of existing cement concrete pavements and continuous reinforced concrete pavement structures and can be widely applied to high-grade highways, tunnel pavements and the like on the heavy-duty traffic condition.

The invention discloses gluewater comprising the following raw materials in part by weight: 3000-6000 parts of chloroprene rubber, 100-200 parts of magnesium oxide, 200-400 parts of zinc oxide, 100-200 parts of age resisters, 80-120 parts of softening oil, 200-400 parts of black glue, 4000-6000 parts of rubber solvent, 4000-6000 parts of dimethylbenzene and 15000-20000 parts of elastic glue. The gluewater prepared by reasonably collocating the chloroprene rubber, the magnesium oxide, the zinc oxide, the age resisters, the softening oil, the black glue, the rubber solvent, the dimethylbenzene and the elastic glue has the characteristics of difficult delamination, good painting performance, storage stability, good toughness and heat resistance, high bonding strength and peel strength, water resistance, low toxicity and the like and has the advantages of low manufacturing cost, convenience and practicality.

The invention provides a nitrosofluoro rubber solution polymerization process which comprises the following steps: performing low-temperature copolymerization on nitroso trifluoromethane, tetrafluoroethylene and a vulcanization point monomer in a dichloromethane solvent, and regulating the polymerization reaction through a molecular chain transfer agent so as to synthesize the fluororubber. The amount of the molecular chain transfer agent is changed, the regulation action of the molecular chain transfer agent is utilized, and nitrosofluoro rubber from a solid form to a liquid form with different dynamic viscosities can be polymerized. In the presence of the dichloromethane solvent, the mass transfer and heat transfer conditions of the polymerization reaction are greatly improved, so that the reaction is stably performed in an easily controlled state, the explosion hazard is avoided, the polymer and the solvent are easily and conveniently separated, and the efficiency is high.

The invention discloses an automobile shock-reducing rubber spring and a preparation process thereof, and relates to the technical field of production of automobile rubber. The automobile shock-reducing rubber spring comprises the following components in parts by weight: 100Phr of natural rubber, 3-7Phr of zinc oxide, 0.5-3.5Phr of an anti-aging agent RD, 2-5Phr of an anti-aging agent 4010NA, 1-3Phr of a dispersant, 1-3Phr of stearic acid, 35-50Phr of carbon black, 2-5Phr of an accelerant, 7-13Phr of paraffin, 4-9Phr of aromatic hydrocarbon oil, 1-3Phr of sulfur S8 and 2-5Phr of a coupling agent. The invention also discloses a preparation process of the automobile shock-reducing rubber spring, and the preparation process comprises twelve process steps of plastifying, standing, mixing, slice discharging, strip cutting, metal frame treatment, surface treatment, rubber cement spraying, vulcanization, trimming, checking and warehousing. The rubber spring produced by the method disclosed by the invention is excellent in mechanical property, good in fatigue resistance and shock-reducing property, wide in material source and low in preparation cost.

The invention relates to rubber cement soil which is prepared from waste rubber granules, cement, water and sand with the weight percent of 1 to 2.5:1:0.3 to 0.5:0 to 1. The granule sizes of the waste rubber granules are from 0.1 mm to 10 mm. The rubber cement soil is applied to the filed of geotechnical engineering by researching the property of the waste rubber, effectively solves the problem that the waste rubber pollutes the environment, and provides a new way for processing the waste rubber. The invention also discloses the preparation method of the rubber cement soil.

A pneumatic tire is equipped with at least a tread part, a sidewall part, a bead part, and a carcass extending from tread part through sidewall part to bead part, and provided with a breaker part on the outside of carcass in the radial direction of the tire. The volume resistivity of each of a tread rubber, a sidewall rubber, a breaker rubber, and a carcass rubber formed in the tread part, the sidewall part, the breaker part, and the carcass respectively is set to 1×10¹² Ω·cm or more. A conductive layer having volume resistivity of 1×10¹¹ Ω·cm or less is provided between a carcass ply constituting the carcass and the sidewall rubber and has an exposed part to the tire surface. A rubber cement layer contacting with at least a part of the exposed part of the conductive layer and at least a part of the region that becomes a grounding surface in the tread part to the road surface is provided.

The invention discloses a rubber cement for the static balance patching of an aircraft tire. The rubber cement comprises a main material natural rubber, and main auxiliary materials comprising styrene butadiene rubber, an adhesive SL-3090, an adhesive A, a high-dispersivity white carbon black, a silane coupling agent, high-wear-resistance carbon black, an antioxidant BLE, a tackifying resin TKM-M, insoluble sulfur, a sulfonamide promoter and a thiuram promoter. The rubber cement is prepared through mixing by an open mixing machine or a closed mixing machine to prepare a gross rubber, and mixing the gross rubber with a solution gasoline according to a weight ratio of 1:2-5. The adhesive strength between a static balance patch using the rubber cement and the tire liner of the tire is high, so the shedding of the static balance patch is difficult during the use of the tire. The rubber cement has the advantages of high tensile strength and tear tensile, good thermal ageing resistance, fast vulcanization speed, no use of toxic materials comprising polyisocyanate or toluene, and protection of the health of operators.

The invention discloses a processing method for waste old rubber powder used for a cement-based material. The processing method comprises the following steps: mixing an inert inorganic powder material with waste rubber particles, and then embedding the inert inorganic powder material into the waste rubber powder through a physical method. In this processing method, the inert organic material and the rubber particles can be mixed in any ratio according to the needs, moreover, the inert organic powder material is embedded into the rubber powder through a physical method, thus the adhering strength between the rubber cement-based powder and the cement slurry is prominently increased, at the same time the density of the rubber cement-based powder is also increased, and thus the rubber cement-based powder can be evenly distributed in the concrete.

The invention relates to a vulcanization bonding process by a template method for conveying belts, which comprises: cutting a cloth layer and a glue layer of a belt joint part into symmetric gradient according to a certain form and angle, smearing rubber cement for bonding, then heating for a certain time to perform a vulcanization reaction at a certain pressure and temperature so as to allow rawrubber to become vulcanized rubber and provide the joint with optimal bonding strength. The invention introduces a bold innovation based on the original thermal bonding process, establishes a new process of lineation cutting and peeling for vulcanization bonding template; the process greatly shortens the bonding time; the new cutting and bonding process for the vulcanization bonding template method is safe, simple and rapid, saves human and material resources, improves working efficiency, increases the quality by 15-20%, and fills a gap in belt vulcanization bonding technology.

Disclosed is a polyethylene dacron coiled material-cementitious capillary crystalline waterproofing construction method. Applied materials include polymer rubber powders, common silicate 42.5 cement, cementitious capillary crystalline waterproofing coatings, polyethylene dacron water-proof coiled materials, early strength antifreezing agents and water. The construction method includes rubber cement preparing, working face cleaning, primary cementing, natural drying, secondary cementing, coiled material paving and maintaining. Advantageous performances of the polyethylene dacron coiled materials and the cementitious capillary crystalline waterproofing coatings are combined, most of upstream face water or other fluids can be baffled, cementing materials meet water to form a crystalline rigid water-proof layer, and the comprehensive water-proof effect can reach an extra high level. The polyethylene dacron coiled material-cementitious capillary crystalline waterproofing construction method has the advantages that the structural strength is high, the surface layer extensibility is good, the service life is long, the water-proof performance is good, the construction is convenient, rapid and simple, the method is suitable for being massively popularized and applied, limit of operating environment is small, resistance to high temperature and low temperature can be achieved, and the water-proof effect is quite good.

The invention relates to an interface treatment agent for improving the rubber-cement matrix in rubber concrete, which belongs to the technical field of concrete admixtures. At present, the interface treatment agents for improving the rubber particle-cement stone matrix mainly include: water washing, Na(OH) solution corrosion and carbon tetrachloride solution cleaning treatment, etc. But above-mentioned material use effect is unsatisfactory. The present invention is characterized in that it is prepared by uniformly mixing three materials: styrene-acrylic acid ester-silicon coupling agent copolymer, ethylene-vinyl acetate copolymer, and polyvinyl alcohol coupling agent (PVA). The weight percentages of each component are: styrene-acrylate-organic silicon coupling agent copolymer accounts for 40-70%, ethylene-vinyl acetate copolymer accounts for 20-40%, and PVA coupling agent accounts for 10-20%. . Compared with the rubber aggregate concrete without surface treatment, the interface agent of the present invention can effectively improve the interface bonding strength between the rubber particles and the cement stone matrix, thereby increasing the compressive strength of the rubber aggregate concrete by more than 6%. The workability of the concrete was not adversely affected.

The invention relates to a repairing method of a local damage of a steel-core rubber belt. The method is characterized by being realized through the six steps of cutting off the damaged rubber belt, polishing, spreading rubber cement, preparing a rubber repairing block, repairing the rubber belt, and sulfidizing. Compared with the prior art, the invention has the advantages that a steel-core rubber belt with 10-35 percent of broken and lost steel wire ropes and a damage with a longitudinal tearing length of 1.6-20m of a steel-core rubber belt can be repaired by using the method, and the repaired steel-core rubber belt can reach the mechanical properties of the original steel-core rubber belt and prevent secondary degumming and core breaking phenomena; the repairing time is short, and the repairing work can be finished within 7-12 hours generally; the labor intensity of maintenance workers is low, and the operation rate of equipment is high; and the influences on production are obviously reduced, and the cost is reduced.

The invention discloses a preparation method of wear-resistant butyronitrile gloves and wrinkling liquid used therefor. The preparation method comprises the following steps: immersing a glove blank into butyronitrile wrinkling rubber cement for gum dipping and gum homogenization, immersing the glove blank subjected to gum homogenization into the wrinkling liquid for surface treatment, and vulcanizing the glove blank subjected to surface treatment. The formula of the butyronitrile wrinkling mucilage is optimized, and particularly, the cellosilk is added into the butyronitrile wrinkling mucilage, so that wrinkle agglomeration is facilitated, and the wrinkling density is increased. According to the invention, the formula of the wrinkling liquid is optimized, and especially the phenolic resinis added, so that wrinkles formed after curing are stronger in stereoscopic impression and shorter in wrinkling time. A three-stage vulcanization process is adopted, so that the consistency and uniformity of wrinkles are further improved, and the wear resistance of the glove is improved.

The invention discloses an adhesive for black rubber shoe topline sponges as well as a preparation method and an application of the adhesive. The adhesive is prepared from natural rubber, sulfur, a vulcanizing accelerator, a vulcanizing activator, rosin and 120# gasoline as raw preparation materials. The crosslinking stress of the adhesive is improved, the adhesion stress is higher than compression resilience force of polyurethane foamed plastics and bending bounce of composite topline cloth, furthermore, the crosslinking forming speed of rubber cement is increased, the composite topline cloth is tightly fixed on an upper lining, and by means of a method for adhering covering sponges to the topline cloth and a heel part in advance, the problem of non-uniform appearance quality of a rear topline of a rubber shoe due to inaccurate positioning of the topline cloth and non-uniform press-fit tightness of the covering sponges in a sewing process of the topline cloth and the heel part is solved and the sewing speed and the production efficiency of the covering sponges for an upper topline can be greatly increased. With the adoption of the adhesive, the reworking rate of the covering sponges for the rubber shoe topline is reduced to 0 from original 5%, and the production efficiency is improved by 15%.