68 results about "Polysulfide rubber" patented technology

The invention discloses a light-moisture dual-curing underwater epoxy coating with a self-repairing function as well as a preparation method and a construction method of the light-moisture dual-curing underwater epoxy coating. The epoxy coating comprises a component A and a component B, wherein the mass ratio of the component A to the component B is (1.5-3.5): 1; the component A is prepared from the following raw materials: bisphenol F type epoxy resin, dynamic disulfide bond modified polysulfide rubber, boron nitride nanosheet and silicon carbide nanowire hybrid filler, a photoinitiator and a silane coupling agent; the component B is prepared from the following raw materials: moisture-cured polyether amine, a boric acid ester bond cross-linking agent and hydrophobic modified graphene oxide. According to the invention, a light-moisture dual-curing mechanism is adopted, ultraviolet irradiation initiates rapid surface curing, and then environmental moisture permeates to complete deep curing. The material provided by the invention has the advantages of rapid curing, excellent self-repairing function, significantly improved underwater adhesion and good thermal conductivity, and provides a new solution for rapid repairing and long-acting protection of underwater structures.

The invention relates to the technical field of polymer composite materials, in particular to an explosion-proof and impact-resistant polymer coating material for an aircraft shell. The coating is prepared from aliphatic polyurethane acrylate, cycloaliphatic epoxy resin, nano silicon dioxide, polyethylene glycol, polyurea microcapsules, dicyclopentadiene resin, a Grubb catalyst, graphene oxide, polysulfide rubber and the balance of auxiliary materials. According to the invention, aliphatic polyurethane acrylate is used as a flexible matrix, so that the risk of hydrolysis of aromatic isocyanate is avoided. The dicyclopentadiene resin is subjected to in-situ ring opening polymerization in the presence of a Grubbs catalyst and cooperates with the hydrophobic nano silicon dioxide to block water. The polyurea microcapsules are broken by impact to release silicone oil, and cracks are filled immediately to reduce friction. And a water molecule permeation path is prolonged by the mica powder sheet layer. And the epoxy-polyurethane network realizes micro-crack self-repairing through dynamic ester bond exchange, so that the anti-explosion and anti-impact functions of the coating and the structural stability of an aircraft shell in an extreme environment are guaranteed.

The invention relates to the technical field of shield tunnel construction, and discloses a shield tunnel segment joint waterproof material and a waterproof structure, the shield tunnel segment joint waterproof material comprises a component A and a component B; the component A comprises the following component: 30-40 parts of liquid polysulfide rubber; 5 to 10 parts of a fluorinated polyurethane prepolymer; 1-5 parts of a silane coupling agent; 3-5 parts of fumed silica; 8-15 parts of hollow glass beads; 10 to 15 parts of nano calcium carbonate; 0.5 to 2 parts of polytetrafluoroethylene micro powder; 0.1 to 1 part of ettringite; the component B comprises the following component: 1-5 parts of manganese dioxide; and 5 to 10 parts of dioctyl phthalate. By utilizing the characteristics that the sealing gasket has excellent fluidity during injection and can be automatically cured into a high elastomer within a set time, a pre-installed sealing gasket can be replaced by adopting an innovative injection process, and the construction difficulty faced by high-precision shield segment assembly in a high-water-pressure environment is effectively solved.

The invention belongs to the technical field of new chemical materials, and discloses a high-strength and high-damping solid buoyancy material based on an interpenetrating network structure and a preparation method of the high-strength and high-damping solid buoyancy material based on the interpenetrating network structure. 10 to 25 parts of liquid polysulfide rubber; 1-3 parts of a coupling agent; 1-2 parts of a dispersant; 0.1 to 0.5 part of a defoaming agent; 0.5 to 1.5 parts of an initiator; 0.2 to 1 part of an accelerant; 30 to 50 parts of modified hollow glass beads; and 0-3 parts of micron-sized organic hollow microspheres. Through the design of multiple damping of the rigid-flexible interpenetrating network and the hollow microspheres, the bottleneck that a traditional buoyancy material is insufficient in damping performance is broken through, and performance coupling of high compressive strength and wide-temperature-range high damping is achieved under low density; and the problems of microbead dispersion and interface bonding are effectively solved by adopting a vacuum vibration casting process, and the advantages of simple process, low energy consumption and low cost are realized.

The invention relates to the technical field of high-molecular polymer synthesis, and particularly discloses a cracking method of high-alkalinity polysulfide rubber latex, which comprises the following steps: S1, carrying out mother liquor separation on polysulfide rubber latex, and then washing for 0-2 times to obtain the high-alkalinity polysulfide rubber latex; and S2, cracking the high-alkalinity polysulfide rubber latex into liquid polysulfide rubber by using a cracking agent composed of sodium sulfite, sodium hydrogen sulfite and sodium hydrosulfide, wherein the molecular weight of the liquid polysulfide rubber is 1000-5000. Compared with the prior art, the cracking agent composed of sodium sulfite, sodium hydrogen sulfite and sodium hydrosulfide is adopted, high-alkalinity polysulfide rubber latex can be cracked, the washing frequency is reduced, the process efficiency is improved, and the overall polysulfide rubber production efficiency is indirectly improved; meanwhile, the wastewater discharge amount is reduced, and the subsequent wastewater treatment cost is reduced. The raw materials required by the cracking agent are easy to obtain and low in cost.

The invention relates to the field of resin processing, and particularly discloses high-hardness rosin resin and a preparation method thereof.The high-hardness rosin resin is prepared from first-grade rosin, pentaerythritol, phenolic aldehyde glycidyl ether, polypropylene glycol diglycidyl ether, nano-silicon dioxide, polysulfide rubber, an antioxidant and a catalyst; according to the manufacturing method, phenolic aldehyde glycidyl ether can react at medium and high temperatures, and low fluid viscosity at the high temperature is beneficial to stirring and uniform distribution of nano silicon dioxide. Phenolic diglycidyl ether is used as an epoxy group cross-linking agent, and a rigid network structure is constructed on a molecular level, so that the hardness of the resin can be greatly improved; the polypropylene glycol diglycidyl ether is introduced into a flexible chain segment, so that the brittleness is reduced. The nano silicon dioxide is uniformly dispersed at the periphery of the resin and is filled in gaps among molecular groups, so that the rigidity of the resin is macroscopically improved. The combination of the two can greatly improve the strength of the resin.

The invention discloses a multifunctional rubber auxiliary and a preparation method thereof, and belongs to the technical field of rubber processing. The method comprises the following steps: compounding sulfydryl-isocyanate bifunctional cage type silsesquioxane with epoxy-terminated polysulfide; the combined sulfydryl-terminated liquid polysulfide rubber and allyl glycidyl ether are subjected to a photo-initiation click reaction to prepare epoxy-terminated polysulfide, the epoxy-terminated polysulfide, polybutadiene, stearic acid, zinc oxide and an accelerant are blended and granulated, and the multifunctional rubber auxiliary master batch is obtained. The auxiliary agent can provide nano reinforcement, dynamic covalent cross-linking and interfacial compatibility effects in rubber mixing at the same time, and the mechanical property, aging resistance and processing stability of vulcanized rubber are remarkably improved. And the method is suitable for industrial production.

The invention belongs to the technical field of polysulfide sealants, and relates to a bi-component modified polysulfide sealant for a binding surface as well as a preparation method and application of the bi-component modified polysulfide sealant. The bi-component modified polysulfide sealant for the binding surface is prepared from a component A and a component B according to the mass ratio of 100: (8-12), the component A comprises modified polysulfide rubber, a functional filler, a coupling agent, an adhesive and a regulator; the modified polysulfide rubber is prepared from polysulfide rubber and a modifier; the modifying agent is one of bis (2-chloroethyl) ether, 1, 2-dichloroethane and bis (chloromethyl) dimethylsilane; and the component B comprises a metal oxide, a plasticizer, an accelerant and a regulator. According to the modified polysulfide sealant formed by two components, the elongation at break of the polysulfide sealant is improved in an extreme environment, the sealant has excellent deformation resistance, cracking, shrinkage and bonding failure of a sealant layer are avoided, and the sealing performance of a binding surface is improved.

This invention relates to the field of epoxy encapsulant technology, and discloses an epoxy encapsulant for sensors and its preparation method. The method includes premixing epoxy resin base material, primary dispersion, secondary mixing, final mixing and degassing, filtration and packaging. Through the synergistic combination of bisphenol A type epoxy resin and phenolic epoxy resin, and the ring-opening reaction with an acid anhydride curing agent, a dense three-dimensional cross-linked network structure is formed, which closes the pores between molecular chains and blocks charge migration paths, thereby improving the electrical insulation performance of the epoxy encapsulant. At the same time, the introduction of polysulfide rubber toughening agent enhances the flexibility and impact resistance of the colloid, improving the reliability of the encapsulation. By using plasma treatment and silane coupling agent surface modification of nano-alumina, the insulation effect is strengthened and the overall mechanical strength of the encapsulant is improved.

The present invention discloses a quick-drying moisture-curing composite layer coating, its preparation method and application, belonging to the technical field of coatings for railway bridge renovation and repair; by weight, its composition is as follows. The quick-drying moisture-curing composite layer coating includes a primer and a topcoat; the primer includes component A and component B; component A includes: 45-60 parts of epoxy resin, 5-10 parts of polysulfide rubber, 5-10 parts of zinc phosphate, 2-6 parts of sodium dodecyl sulfate, 2-4 parts of surfactant, 8-12 parts of self-made fluorine-modified hydrotalcite, 5-10 parts of xylene; component B includes: 45-55 parts of modified curing agent, 20-30 parts of ethanol, 1-3 parts of DMP-30 accelerator. Component B in the primer coating of this application contains a reaction accelerator, ethanol, and a modified curing agent, which can achieve moisture curing at a relatively fast speed; and can complete the renovation and repair of the steel structure of railway bridges in a relatively short time.

The invention provides an integrated inductor formed based on a magnetic composite material and a winding and a manufacturing method of the integrated inductor. The integrated inductor comprises a main magnetic ring, iron-based nanocrystalline powder and composite powder which are formed in an axial magnetic field orientation mode under the pressure of 500-700 MPa, the winding and an internal gradient layer. The crushed magnetic particle mixture is of a chain structure of Fe-Si-B-Cr amorphous crushed magnetic particles which are directionally arranged in a magnetic field, and the external coating layer is made of a high-thermal-conductivity magnetic composite material. According to the invention, a three-stage magnetic circuit design is formed by the high saturation magnetic induction intensity of the main magnetic ring, the structural support, the magnetic resistance shunt of the transition layer, the stress buffer and the broadband response and thermal management of the coating layer, so that the broadband response of DC-5MHz is realized, and the saturation current is improved; meanwhile, an epoxy resin-cyanate ester-polysulfide rubber composite matrix is subjected to triazine ring crosslinking and elastomer modification, so that the thermal deformation temperature reaches 200 DEG C or above, meanwhile, the interlayer CTE difference is reduced, and the forming yield is increased.

The invention belongs to the technical field of metal corrosion protection, and discloses a hydrogen-microorganism synergistic corrosion protection coating as well as a preparation method and application thereof. The coating comprises the following components in parts by weight: 100 parts of epoxy resin, 18-22 parts of liquid polysulfide rubber, 5-7 parts of palladium modified hexagonal boron nitride nanosheets, 6-10 parts of [P4444] [Gly] coated SiO2 microcapsules, 2-4 parts of a silane coupling agent and 35-45 parts of an amine curing agent. The coating can efficiently block hydrogen permeation and inhibit microbial corrosion for a long time at the same time.

The utility model provides a kind of PET-MR imaging quality detection multifunctional phantom, belong to PET / MR quality detection technical field, comprising: by inside to outside sequentially arranged uniformity detection module, PET / MR fusion degree test module, PET / MR resolution test module, PET / MR attenuation correction module;Uniformity detection module is by a cylindrical 68Ge-68Ga model body, 68Ge and epoxy resin and liquid polysulfide rubber are evenly mixed for simulating uniform radioactive division;PET / MR fusion degree test module includes hollow cylinder, when testing, inject Na source in hollow cylinder, carry out PET / MR scanning, obtain image fusion accuracy according to the obtained scanning image;It can be used for quality control to PET / MR imaging instrument, also can be used for finding the optimal scanning parameter of PET / MR imaging instrument, for teaching demonstration, for tracer screening etc., with wide application range.

The invention provides a self-repairing paper-based coating, a preparation method and application, and the self-repairing paper-based coating is prepared by taking an isocyanate-terminated polyurethane prepolymer generated by diisocyanate and dihydroxyl-terminated polyol as a branch chain and introducing hyperbranched polyester serving as a core and polysulfide rubber serving as a cross-linking agent. By controlling the adding proportion of the diisocyanate, the dihydroxyl-terminated polyhydric alcohol, the hyperbranched polyester and the polysulfide rubber, part of unreacted isocyanate groups are remained at the tail end of the self-repairing paper-based paint. When the surface of a paper-based material containing cellulose is coated with the self-repairing paper-based paint, residual isocyanate group-NCO reacts with hydroxyl group-OH in the cellulose to form a binary polymer blending system with an interlocking network structure. The binary polymer blending system not only realizes firm bonding of the self-repairing paper-based paint and the paper-based material, but also realizes self-repairing of the paper-based material.

The present invention relates to the technical field of underwater acoustic transducers, and particularly relates to a polyurethane casting adhesive-metal bonding gradient primer, a preparation method and an application thereof. The primer of the primer is made of the following components in parts by mass: 95-105 parts of epoxy resin, 3-5 parts of 2-ethyl-4-methylimidazole, 18-22 parts of polysulfide rubber, 40-80 parts of xylene, and 280-350 parts of filler; the topcoat of the primer is made of the following components in parts by mass: 95-105 parts of epoxy resin, 3-5 parts of 2-ethyl-4-methylimidazole, 18-22 parts of polyurethane prepolymer, and 20-30 parts of xylene. The purpose of the present invention is to improve the stress distribution state on the bonding surface of the polyurethane casting adhesive and the metal, avoid reducing the watertight reliability of the underwater acoustic transducer due to stress concentration, and at the same time reduce the usage limitations. After applying the primer to the metal shell, it is not afraid of being contaminated and can be placed or operated for a long time without affecting the bonding effect.

The invention belongs to the technical field of adhesives, and particularly relates to a fuel-resistant polysulfide sealant and a preparation method thereof. The fuel-resistant polysulfide sealant is composed of a main agent and a vulcanizing paste, the main agent is prepared from the following components in parts by weight: 40 to 80 parts of liquid polysulfide rubber, 20 to 40 parts of reinforcing filler, 1 to 6 parts of fluorine modified fumed silica and 2 to 10 parts of fluorine-containing silane coupling agent; the vulcanizing paste comprises the following components in parts by weight: 10-50 parts of a vulcanizing agent, 1-6 parts of a vulcanization accelerator and 20-70 parts of a plasticizer. The fumed silica modified by the perfluorinated straight-chain fatty acid is adopted as the filler, the fluorine-containing silane coupling agent is added into the main agent, and the fumed silica has a relatively large specific surface area, so that the modified filler has a good oleophobic effect, and the fuel oil resistance of the polysulfide sealant can be improved.

The invention discloses an anticorrosive coating and a preparation method thereof. The anticorrosive coating comprises a component A and a component B, the component A is prepared from the following raw materials in parts by weight: 60 to 80 parts of bisphenol A type epoxy resin E-51, 36 to 48 parts of polysulfide rubber, 0.3 to 0.4 part of triphenylphosphine, 8 to 10 parts of reactive diluent, 0.5 to 1 part of wetting dispersant, 0.1 to 0.3 part of defoaming agent, 0.1 to 0.3 part of flatting agent, 10 to 20 parts of mica powder, 20 to 30 parts of talcum powder, 5 to 10 parts of glass powder and 5 to 10 parts of zinc oxide filler; the component B is a curing agent; the weight part ratio of the component A to the component B is (8-10): 1. The curing agent with an alkane long chain, a polyamine structure, an amide structure and an anhydride structure is synthesized by taking tung oil methyl ester as a basic framework, so that a coating film has excellent toughness, water resistance, adhesive force, hardness, high temperature resistance and corrosion resistance.

The invention discloses a high-performance water-based environment-friendly anticorrosive coating and a preparation method thereof, and belongs to the technical field of coatings. Comprising the following raw materials: water-borne epoxy resin E-44, modified polysulfide rubber, a functional silane coupling agent, water-borne acrylic resin, 200-mesh glass flakes and wollastonite powder. Coating the heavy calcium powder with zinc phosphate and nano silicon dioxide; a silane coupling agent, microencapsulated castor oil and a plant antibacterial extracting solution are added; the cleaning agent is prepared from an isothiazolinone derivative, a benzimidazole preservative and sodium polyphosphate. The acid-rain-corrosion-resistant antibacterial coating is excellent in acid resistance, weather resistance, scouring resistance, construction convenience and the like, meanwhile, by optimizing the formula and selecting the raw materials, the cost is effectively reduced on the premise that the performance is guaranteed, and the acid-rain-corrosion-resistant antibacterial coating is suitable for industrial building outer walls, smelting enterprises, chemical equipment and other scenes needing long-term acid rain corrosion resistance and antibacterial protection.

The invention relates to the technical field of engineering materials, in particular to a cross-linking curing type waterproof binder and a preparation method thereof, and hot-mixed epoxy asphalt and a preparation method thereof. The waterproof binder comprises a component A and a component B, wherein the component A comprises the following raw materials: epoxy resin, carboxyl-terminated nitrile rubber, polyenol glycidyl ether and liquid polysulfide rubber; the component B is prepared from the following raw materials: diaminodiphenylmethane, microcapsule type dicyandiamide and 2-phenylimidazoline. The characteristics of the modified epoxy resin and the latent curing agent are utilized, an interlayer chemically bonded epoxy asphalt waterproof bonding pavement system is realized through a cross-linking synergistic effect and a staged curing mechanism, and the tightness, the waterproofness and the durability of the pavement system are improved. The waterproof binding material has excellent mechanical properties; the Marshall stability and the flow value of the epoxy asphalt mixture respectively reach 98kN and 2.98 mm, and the freeze-thaw splitting strength, the track dynamic stability and the low-temperature bending strain all meet the standards.

The present application belongs to the technical field of pole body composite materials, and discloses a method for reinforcing and bonding a pole body material by carbon fibers. In the present application, a polyphenyl oxide resin primer is heated and fused on the surface of the pole body, which is a thermoplastic resin material. A curing agent is added to the thermally fused primer on the pole body, and the primer is cooled and solidified. The primer can also undergo a chemical cross-linking reaction with a leveling adhesive. The outer surface of the pole body is easily affected by adverse environments, such as low temperatures, and can be subjected to unexpected loads, such as wear and impact. After the leveling adhesive, which is made of an epoxy resin and a polysulfide rubber, is brushed and coated, the pole body is further coated with a dipping adhesive. The pole body material is thick, heavy and strong, and can withstand the impact of large fish. When fishing, the pole body can better transfer and release force.

The invention relates to the technical field of polyurethane filling materials, and discloses a polyurethane filling material for a hydraulic support column socket and a preparation method thereof.The polyurethane filling material comprises a wear-resistant filler, a flame-retardant filler and other additives, the wear-resistant filler is kaolin of a lamellar structure and can preferentially bear shear force and normal force, and the flame-retardant filler can preferentially bear the shear force and the normal force; the direct attack of friction to the matrix is delayed, and the liquid-state sulfydryl-terminated polysulfide rubber linking the matrix and the kaolin has excellent toughness, so that the stress transmitted to the matrix is buffered, the synergistic enhancement of the performance is realized, and the wear resistance is improved; the flame-retardant filler is heated and decomposed to generate phosphoric acid and nitrogen, the phosphoric acid and the nitrogen are combined with polyurethane to form an expanded carbon layer, and generated sulfur dioxide can efficiently quench free radicals in a combustion chain reaction, so that a synergistic effect is achieved, and the flame-retardant efficiency is improved; in addition, by optimizing the ratio of the raw materials, the polyurethane filling material has excellent shape memory performance.

The invention relates to the technical field of fabrics, and discloses an anti-deformation high-glossiness textile fabric and a preparation process thereof.The fabric is formed by interweaving warp yarns and weft yarns, the warp yarns are spandex filaments, the weft yarns are polyester composite fibers, the polyester composite fibers are prepared from polyester fiber slices, modified potassium titanate whiskers, antioxidants and other raw materials, and the anti-deformation high-glossiness textile fabric is formed by weaving the polyester fiber slices, the modified potassium titanate whiskers, the antioxidants and the like. The modified potassium titanate whisker is prepared by modifying the surface of the potassium hexatitanate whisker with a macromolecular modifier with a polysulfide rubber-phenyl adamantane block alternating link structure, the modified potassium titanate whisker is used as an additive of the polyester fiber to reinforce the polyester fiber, and the advantages of the potassium titanate whisker and the macromolecular modifier are utilized to reinforce the polyester fiber, so that the polyester fiber has a good anti-static effect, and the anti-static performance of the polyester fiber is improved. The breaking strength, the elongation and the elastic recovery rate of the polyester fiber are improved, so that the prepared fabric has good deformation resistance, and the prepared fabric has the characteristic of high glossiness by selecting the spandex and the polyester.

The invention provides a treatment and resource utilization method of polysulfide rubber polymerization mother liquor sewage, and belongs to the technical field of wastewater treatment. The treatment method provided by the invention comprises low-temperature evaporation and Fenton oxidation, and comprises the following steps: (1) carrying out low-temperature reduced-pressure evaporation treatment on polysulfide rubber polymerization mother liquor sewage, and condensing to obtain colorless distilled water; and (2) carrying out Fenton oxidation treatment on the obtained colorless distilled water to obtain purified water meeting the emission standard. According to the method, the COD value of the polysulfide rubber polymerization mother liquor sewage can be greatly reduced, so that the effluent meets discharge and reuse standards, compared with traditional high-temperature evaporation, low-temperature evaporation can more effectively remove sulfydryl-terminated small-molecular organic matters, and the difficulty and cost of a subsequent Fenton oxidation method are reduced.

The invention provides liquid polysulfide rubber as well as a preparation method and application thereof. The preparation method of the polysulfide rubber comprises the following steps: (1) preparing a polysulfide polymer; (2) cracking the multi-sulfur polymer obtained in the step (1) to obtain a cracking product; and (3) acidizing the organic solution containing the cracking product to obtain the liquid polysulfide rubber, in the step (3), a solvent in the organic solution is selected from at least one or a mixture of two or more of benzene, methylbenzene, xylene and ethylbenzene. According to the invention, the organic solvent is added into the cracking product, the organic solution of the cracking product is prepared firstly, and then the acidizing treatment is carried out, so that the operation is simplified, the chroma of the product is reduced, the product quality is improved, and the product has excellent oil resistance, ozone resistance and low-temperature performance and is wider in application range.

This invention relates to the field of fabric technology and discloses a high-gloss, deformation-resistant textile fabric and its preparation process. The fabric is formed by interlacing warp and weft yarns, wherein the warp yarns are spandex filaments and the weft yarns are polyester composite fibers. The polyester composite fibers are obtained by melt spinning using polyester fiber chips, modified potassium titanate whiskers, and antioxidants. The modified potassium titanate whiskers are obtained by modifying the surface of potassium hexatite whiskers with a macromolecular modifier having a polysulfide rubber-phenyl adamantane block alternating linkage structure. This modifier is used as an additive to reinforce the polyester fibers. By utilizing the advantages of potassium titanate whiskers and macromolecular modifiers, the breaking strength, elongation, and elastic recovery rate of the polyester fibers are improved, thereby giving the prepared fabric good deformation resistance. By selecting spandex and polyester, the prepared fabric can also have high gloss characteristics.

The invention relates to the field of fireproof coatings, and relates to a nano-titanium modified solvent-free epoxy fireproof coating and a preparation method thereof, the nano-titanium modified solvent-free epoxy fireproof coating comprises the following components: 100 parts of a component A and 30 parts of a component B, the component A comprises epoxy resin, a nano titanium modified epoxy polymer, liquid polysulfide rubber, a reactive diluent, a catalyst, a charring agent, a flame retardant phosphate, magnesium hydroxide, expansible graphite, ceramic chopped cotton and an auxiliary agent; the component B is prepared from the following components: a modified polyamide curing agent, a foaming agent, aluminum hydroxide, titanium dioxide, kaolin, zinc borate and carbon fiber powder. The prepared fireproof coating fills up the blank of multifunctional coatings for resisting hydrocarbon flame and explosion impact, resisting corrosion, resisting water, being high in weather resistance and the like in domestic outdoor use; the flux-free epoxy intumescent fireproof coating is modified by the nano titanium modified epoxy polymer, so that the flux-free epoxy intumescent fireproof coating has excellent fireproof performance and also has corrosion resistance, water resistance and weather resistance.

The invention discloses a preparation method of a metal ion doped delta-MnO2-carbon nanotube composite material and application of the metal ion doped delta-MnO2-carbon nanotube composite material in polysulfide rubber vulcanization. The preparation method comprises the following steps: carrying out heat treatment through an acidic solution, and carrying out surface hydrophilic modification on a carbon nanotube material; preparing a manganese salt solution containing a specific proportion of metal concentration; and mixing the surface-modified carbon nanotubes with a reaction solution, and carrying out curing treatment in a normal-pressure environment. The delta-MnO2-carbon nanotube composite material synthesized by the coprecipitation method provided by the invention not only is simple in preparation method and suitable for large-scale preparation, but also can well control the loading capacity of manganese dioxide in the carbon nanotube. The carbon nanotubes are applied to the field of polysulfide rubber curing, on one hand, the carbon nanotubes can significantly improve the strength of the cured rubber, and on the other hand, the curing speed of the polysulfide rubber can be controlled by adjusting the loading capacity of the metal ion doped delta-MnO2.

The invention discloses a rubber compound based on waste rubber powder, a wide-temperature-range and high-damping rubber material prepared from the rubber compound and application of the rubber compound. The rubber compound based on the waste rubber powder comprises the following components in parts by weight: 100 parts of waste butyl rubber powder; 35 to 45 parts of sulfydryl-terminated polysulfide rubber; 3-4 parts of an azo foaming agent; and 1-5 parts of a catalyst. The damping factor of the rubber material prepared by adding the sulfydryl-terminated polysulfide rubber and the azo foaming agent into the waste butyl rubber powder is greater than 0.5 at the temperature of-30 to 80 DEG C, and the multi-layer rubber material prepared by adding the polyisobutene and the acrylamide modified polysulfide rubber meets the effects of wide temperature range and high damping; and the maximum damping factor near the room temperature condition can be further improved, and the application range is widened.

The invention provides a self-healing type polymer waterproof roll and a preparation method thereof. The self-healing type polymer waterproof roll comprises a flame-retardant elastic waterproof layer, an anti-fatigue layer, a heat preservation layer and a self-adhesion layer which are arranged in a stacked mode. The flame-retardant elastic waterproof layer is prepared from the following raw materials: ethylene propylene diene monomer, chlorinated polyethylene, a polyolefin elastomer, a flame retardant, an antioxidant, an ultraviolet light absorber and color master batch; the anti-fatigue layer comprises the following raw materials: ethylene propylene diene monomer, a thermoplastic elastomer, a styrene-butadiene-styrene block copolymer, nitrile rubber, an antioxidant, a vulcanizing agent and color master batch; the thermal insulation layer is prepared from the following raw materials: ethylene propylene diene monomer, thermoplastic vulcanized rubber, aerogel, an antioxidant, a vulcanizing agent and color master batch; the self-adhesive layer comprises the following raw materials: brominated butyl rubber, chloroprene rubber, polysulfide rubber, epoxy resin and allyl glycidyl ether. The self-healing type polymer waterproof coiled material disclosed by the invention has good elasticity, flame retardance, weather resistance, fatigue resistance and thermal insulation performance.

The application belongs to the technical field of organic polymer compound preparation, and relates to an oilfield water injection and polymer injection glass steel pipeline material and a preparation method, which comprises, from inside to outside, an anticorrosive wear-resistant inner layer and a high-pressure anti-aging outer layer; the anticorrosive wear-resistant inner layer comprises epoxy vinyl ester resin, graphene-polytetrafluoroethylene composite powder, nano silicon dioxide, nano zinc oxide, isothiazolinone microbial inhibitor, methyl tetrahydrophthalic anhydride curing agent and dimethyl aniline accelerator; the high-pressure anti-aging outer layer comprises bisphenol A type epoxy resin, phenolic resin, surface modified glass fiber, nano silicon carbide, aromatic amine curing agent, triethanolamine accelerator, polysulfide rubber toughening agent, ultraviolet absorber, antioxidant and nano boron nitride; through overall cooperation of component matching and process improvement, the performance is obviously improved, the oilfield water injection and polymer injection complex working conditions are adapted, and a plurality of technical shortcomings of the existing glass steel pipeline are solved.