923 results about "Liquid rubber" patented technology

Improved methods of forming fractures containing resilient proppant particle packs which prevent the production of sand and fines with produced fluids and prevent proppant flow-back in a subterranean zone penetrated by a well bore are provided. As the fractures are formed, a liquid hardenable resin component is mixed with a liquid hardening agent component and a liquid rubber component to form a hardenable resin composition. The hardenable resin composition is coated onto dry proppant particles which are suspended in the fracturing fluid and placed in the fractures. The hardenable resin composition on the resin composition coated proppant particles is allowed to harden and consolidate the proppant particles into high strength resilient permeable packs.

The present invention relates to composite polymer material performance improving technology. The liquid natural rubber slurry contains natural latex and carbon nanotube (CNT) and has total solid content of natural latex and CNT in 5-30 % and weight ratio between CNT and dry natural latex of 1-50 %. The liquid natural rubber slurry is prepared through surface treatment of CNT for hydrophilicity; mixing with dispersant and deionized water to obtain water suspension of CNT; regulating the pH value of the suspension to 9-12; and finally mixing with natural latex to obtain the liquid natural rubber slurry with added CNT. The liquid natural rubber slurry with homogeneously dispersed CNT is used in preparing CNT modified rubber powder and CNT modified sulfurized rubber products with greatly raised mechanical, electrically conducting, heat conducting, antistatic and other performance.

The present invention relates to the preparing technology of composite rubber material. Carbon nanotube via surface treatment and liquid rubber are ultrasonically mixed and added into partial hydrogenated nitrile-butadiene rubber to prepare mother rubber; the mother rubber is mixed with the rest hydrogenated nitrile-butadiene rubber, carbon black, zinc oxide and sulfurizing agent, and the mixture is mixed in a rolling mixer or a Banbury mixer and sulfurized to obtain the carbon nanotube modified hydrogenated nitrile-butadiene rubber. The present invention has the beneficial effects of raised heat performance, antiwear performance, mechanical strength, antiageing performance, etc. raised use performance and expanded application range.

The present invention relates to netted fabric technology, and is especially a kind of high strength wicking-resisting waterproof netted fabric and its preparation process. The netted fabric is prepared with radial braid possessing directional structure as base fabric and through soaking with liquid rubber, stoving and adhering modified PVC films to its two sides. The netted fabric of the present invention has high tensile strength, high breaking strength, high stripping strength, powerful wicking resistance, good waterproof performance and high weather resistance, and may be used widely in making inflated toy, household swimming pool, tent, etc.

The invention discloses a high-permeability liquid rubber spray coating, and relates to the technical field of spray coatings. The high-permeability liquid rubber spray coating comprises a component A and a component B, wherein the component A is anionic liquid rubber asphalt emulsion; the component B is a coagulant solution; the component A has the solid content of liquid rubber asphalt emulsion of 50-75 weight percent, and comprises the following components in percentage by mass: 1 to 35 percent of rubber emulsion, 10 to 50 percent of asphalt emulsion, 0.01 to 2 percent of anionic dispersing agent, 0.01 to 2 percent of anionic surfactant, 0.1 to 10 percent of fatty alcohol-polyoxyethylene ether, 0.1 to 10 percent of alkali resistant wetting agent OEP-70 and 0.1 to 10 percent of alkali resistant wetting agent AEP; and the component B is an aqueous solution at the concentration of 3-18 percent, which is prepared by mixing calcium chloride and composite aluminum-iron polymer in percentage by mass. The wetting agents are added into the spray coating, and the coating has high permeability and wider application range.

The invention relates to a spraying quick-setting rubber asphalt waterproof coating material. A special technology is adopted for preparation of the spraying quick-setting rubber asphalt waterproof coating material. The spraying quick-setting rubber asphalt waterproof coating material is a water-based spraying paint prepared according to a ratio, and a preparation method of the spraying quick-setting rubber asphalt waterproof coating material comprises following steps: a liquid rubber asphalt latex emulsion is prepared by mixing superfine, suspended and micro-emulsion modified emulsified asphalt with high-molecular polymer rubber latex; and the liquid rubber asphalt latex emulsion is mixed with a coagulant. Cold spraying construction is adopted for preparation of the spraying quick-setting rubber asphalt waterproof coating material; elastic coating film elongation is more than 1000%; restoration ratio is more than 95%. The spraying quick-setting rubber asphalt waterproof coating material possesses ultraviolet resistance, high construction efficiency, high bonding strength, excellent high-temperature resistance, excellent low temperature flexibility, and better quick setting effect; and is capable of forming films in 3 seconds. The spraying quick-setting rubber asphalt waterproof coating material is water based; is friendly to the environment; possesses no toxicity, and excellent endurance; is quick and convenient for construction; and is a novel environmental friendly waterproof paint with a wide application range. The spraying quick-setting rubber asphalt waterproof coating material is mainly used for various waterproof and anticorrosion projects. The spraying quick-setting rubber asphalt waterproof coating material is used for individual construction of waterproof projects, for composite construction of waterproof projects together with waterproof roll, and for individual construction of anticorrosion projects.

A sealant system 13 for a manifold 10 of a proton exchange membrane fuel cell includes low temperature cured or heat cured silicone rubber bridges 14, 14a, 14c between the end plates 9 to compensate for the uneven edges of various fuel cell component layers, and a layer 15 of silicone rubber foam or sponge, or a molded silicone rubber gasket 15a, extending across the bridges and along the end plates, around the entire contact perimeter surfaces of the manifold, to seal the manifold to the fuel cell. The cured silicone rubber may extend along the end plates between the bridges. A rubber strip 20 may be adhered to the silicone rubber bridges and end plates. The bridges may comprise a first layer 22 of low shrinkage self-leveling RTV liquid rubber with viscosity in the range of 10,000-20,000 cps and a second layer 14 of RTV liquid rubber.

The invention discloses a high-performance thermosetting epoxy asphalt binder, comprising a part A component and a part B compound, wherein the part A component comprises 100 weight parts of epoxy resin, 20-35 weight parts of flexibilizer, 0.5-2 weight parts of promoter, and 8-20 weight parts of diluent; the part B component comprises 300-350 weight parts of asphalt, 150-160 weight parts of flexible curing agent, 10-15 weight parts of promoter, 2-5 weight parts of compatilizer, and 100 weight parts of diluent; and the ratio of the part A component to the part B component is 100:350-440. According to the invention, by using flexible long-chain fatty acid anhydride as the curing agent and carrying out solidification reaction on the curing agent with the epoxy resin, a stereo cross-linked structure is formed, and the bonding capability and water resistance of asphalt are increased; by using liquid rubber as the flexibilizer, the flexibility of the epoxy asphalt binder is raised to adapt to the flexibility of a steel plate, and by prereacting the flexibilizer with epoxy resin firstly for grafting, the compatibility between the epoxy asphalt binder and asphalt is raised. The epoxy asphalt binder is suitable for bonding and waterproofing of steel bridge floor, cement concrete bridge floor, tunnel, highway and other pavements. The invention also discloses a preparation method of the epoxy asphalt binder.

The invention discloses a defect pipe reinforced method and composite material, which is characterized by the following: adapting reinforced composite material, defect filling material and interlaminar adhesive agent to restore and reinforce the defect position; disposing the defect surface only; filling the defect position with the reinforced filling material; wrapping the reinforced film on the pipe; adapting interlaminar adhesive agent and hardening agent among layers, wherein the reinforced composite material piece is high-strength glass fiber unidirectional cloth or carbon fiber unidirectional cloth, which is composed of 593 hardening agent or triethanolamine hardening agent, epoxide-resin glue of acrylate liquid rubber and interlaminar adhesive agent. The invention can restore the defect pipe of more than half thickness without welding, leakage and cracking, which displays normal pipe after restoring the explosion-hole.

Compact cosmetic case with airtight sealed structure, which has a simple construction and enhances its airtight sealed effect to prevent a leakage of cosmetics, such as powder, thus improving quality, increasing productivity and reducing the production costs. The compact cosmetic case includes a body, an inner casing to contain the powder, an inner lid hinged the inner casing and having a powder puff seat, and an outer lid hinged to the body and having a locking part. A groove is formed around an upper surface of the inner casing, with liquid rubber filling the groove to form a rubber seal. A locking hole is formed on the inner casing, while a locking lever having a locking projection is formed on the inner lid to be locked to the locking hole.

The invention discloses a synthetic method to prepare polyurethane elastic body with hydroxyl-ended oligomer polyol as raw material, which is characterized by the following: reacting hydroxy-terminated liquid rubber or poly-tetrahydropyran ether alcohol with polyisocyanates; getting end isocyanate group pie polymer in fixing reacting time, temperature; giving in A component; compositing chain-extending agent, flux, antiager with gallant; getting curative; giving in B component; hardening A component and B component under indoor temperature proportional mixing; getting high-performance multipurpose polyurethane elastic body; The stretching intensity is: 10.0-47.0Mpa, splitting extensibility>300%, 300% load at certain intensity: 5.0-35.0Mpa.

The present invention relates to a hermetic structure having a flat cable. Liquid rubber is charged into a gap to be sealed, the charged liquid rubber is subjected to a physical action at the normal temperature and under the normal pressure, and the liquid rubber is cured to form a seal. By forming the seal in this manner, the limitation of heat resistance and pressure resistance is moderated, the flexibility of selection of materials for various constituent members is enhanced, and the structure is simplified.

The application discloses coherent, processable rubber compositions containing cured rubber particles, especially recycled crumb rubber, dispersed in a curable base rubber. A processable composition, particularly one which can be roll-processed into a self-sustaining web is achieved by including in the curable rubber a low-viscosity curable rubber component such as a liquid rubber. This component wets the crumb rubber enabling it to disperse fully during mixing and connect intimately into the structure upon curing. This technique enables larger quantities and/or smaller particle sizes of the crumb rubber to be successfully incorporated while maintaining processability. Inert fillers can be used or omitted, reducing density. The novel rubber compounds are particularly suitable for making into layer products such as mats and flooring materials. Desirably these are laminated with fabric such as tufted textiles. This can be done in a compression moulding process.

The invention relates to a high-temperature resistant spray fast-setting rubber asphalt waterproof coating which is a high-temperature resistant water-based spray coating prepared proportionally by adding a vulcanizing agent and a composite reinforcing agent into liquid rubber asphalt mastic emulsion prepared from modified emulsified asphalt and high-molecular polymer rubber latex and then mixing with a coagulating agent. The high-temperature resistant spray fast-setting rubber asphalt waterproof coating provided by the invention is a novel spray fast-setting rubber asphalt environment-friendly waterproof material which is nontoxic, tasteless and pollution-free and can be subjected to cold construction at normal temperature; and meanwhile, the high-temperature resistant spray fast-setting rubber asphalt waterproof coating has good heat resistance (160 DEG C), high elongation at break (greater than 1,000%), high elasticity recovery rate (greater than 90%), high bonding strength (greater than 0.5MPa), excellent low temperature resistance (without breakage at -30 DEG C) and excellent ageing resistance, acid/alkali resistance, cohesiveness and shear resistance, and can prevent structural damage caused by water penetration so as to prolong the service life of highway bridges.

The invention discloses a high-cis-1,4-content hydroxyl-terminated polybutadiene liquid rubber and a preparation method thereof. The method includes following steps: (1) preparing epoxidized butadiene rubber from butadiene rubber; (2) preparing high-cis-1,4-content aldehyde group-terminated polybutadiene liquid rubber from the epoxidized butadiene rubber; (3) preparing high-cis-1,4-content aldehyde group-terminated polybutadiene liquid rubber from the butadiene rubber in a one-pot manner; (4) reducing the high-cis-1,4-content aldehyde group-terminated polybutadiene liquid rubber to prepare the high-cis-1,4-content hydroxyl-terminated polybutadiene liquid rubber. In the method, the high-cis-1,4-content hydroxyl-terminated polybutadiene liquid rubber is prepared from the butadiene rubber and the content of cis-1,4 can reach 95.0-99.0%. A number-average molecular weight of the high-cis-1,4-content hydroxyl-terminated polybutadiene liquid rubber can be regulated between 2000 g/mol and 10000 g/mol. A molecular weight distribution is 1.2-3.0 and a degree of functionality is 1.9-2.2. On the basis of excessive supply in raw rubber of butadiene rubber and increased tensing situation of petroleum sources, by means of the method, the high-cis-1,4-content hydroxyl-terminated polybutadiene liquid rubber can be prepared through oxidative pyrolysis of the butadiene rubber, so that the method has a quite important practical significance.

The invention discloses a polyhydroxy polybutadiene liquid rubber and a controllable preparation method thereof. According to the method, the polyhydroxy polybutadiene liquid rubber is prepared by carrying out oxidative pyrolysis and a reduction-process on commercialized cis-1,4-polybutadiene rubber. The number-average molecular weight of the polyhydroxy polybutadiene liquid rubber prepared from the cis-1,4-polybutadiene rubber is adjustable within the range of 1000-15000 g/mol; the molecular weight distribution is 1.2-3.0; the cis-1,4 content is greater than 90%; the glass transition temperature is -100 to -80 DEG C; the hydroxy functionality is 5-30; and the hydroxy groups are distributed on the head and tail ends of the polybutadiene molecular chain and in the molecular chain. Under the background of overstocked unvulcanized cis-1,4-polybutadiene rubber and increasingly deficient petroleum resources, the polyhydroxy polybutadiene liquid rubber prepared by cis-1,4-polybutadiene rubber oxidative pyrolysis has very important practical meanings.

The invention belongs to the technical field of adhesives, and particularly relates to an ultraviolet-heat dual curing optical adhesive containing epoxidized polybutadiene resin. The ultraviolet-heat dual curing optical adhesive comprises the following components in percentage by weight: 14.5%-45% of epoxidized polybutadiene resin, 10%-40% of alicyclic epoxy modified resin, 5%-15% of polyolefin liquid rubber, 25.5%-35% of an acrylic ester reactive diluent, 2.4%-3.4% of a free radical photoinitiator, 0.1%-0.2% of a cationic photoinitiator and 2%-2.5% of a peroxide initiating curing agent. The optical adhesive disclosed by the invention is relatively completely solidified at a shaded part, a dark adhesive layer part or a thick adhesive layer part, has excellent optical properties such as high refractive index and high transmittance after being solidified, has the advantages of shock resistance, low yellowing coefficient, low haze, low shrinking percentage, easiness in repairing and good flexibility, meets the requirements of optical, physical and chemical properties of display devices, and is suitable for fast-tempo and high-efficiency production processes.

In accordance with the present invention, there are provided toughening agents which are useful for improving the performance properties of epoxy-based adhesive formulations. For example, epoxidized polysulfides have been found to be useful toughening agents of component level underfill adhesive compositions. Invention materials are liquid rubbers which provide improved fracture toughness while maintaining satisfactory capillary flow properties. Invention materials can be synthesized in neat (solventless) reactions from readily available low-cost raw materials and isolated in high yields. They have linear and branched telechelic structures with terminal epoxide functional groups, and are prepared without substantially increasing the molecular weight of the starting polysulfide materials. Invention materials are compatible with common epoxy formulations and may be used without purification. At low levels of incorporation, they provide adhesives that meet the minimum fracture toughness (Gq>2.0 lb/in) and capillary flow specifications (flow time<180 seconds) for many commercial underfill applications. In accordance with a further embodiment of the present invention, there are provided adhesive compositions comprising invention compounds and methods for use thereof. In additional embodiments of the present invention, there are provided methods for the preparation of invention toughening agents, methods for adhesively attaching a device to a substrate, and assemblies comprising first article(s) adhered to second article(s).

The invention provides a pigment printing binding agent and a synthesizing method thereof. The binding agent is prepared from silicone-acrylate copolymer, aqueous polyurethane, liquid rubber, an emulsifying agent and the like. By taking advantage of the high film-forming property of polyacrylic acid, the high flexibility of organic silicone, the high air permeability of polyurethane and the high elasticity of the liquid rubber, the high-fastness and super-soft pigment printing binding agent is prepared by a complex synergistic technology. The binding agent has high film-forming property, air permeability, flexibility and elasticity, good handfeel and high color fastness. After the binding agent is applied to a printing fabric, the release amount of a harmful substance, namely formaldehyde, is small.