46 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 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 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 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 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 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 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 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 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.

The invention discloses a preparation method and application of a low-density sulfur-containing sealant for aviation, and particularly relates to the field of aviation sealing materials. Comprising a component A and a component B in a mass ratio of 100: (8-12), wherein the component A comprises the following components in parts by weight: 30-60 parts of liquid polysulfide rubber, 5-20 parts of titanium dioxide, 5-20 parts of calcium stearate, 30-60 parts of hollow silicon dioxide solvent-free nanofluid, 5-20 parts of fumed silica, 0.5-4 parts of a coupling agent and 1-3 parts of a curing agent; the hollow silicon dioxide solvent-free nanofluid comprises a hollow silicon dioxide microsphere, and the outer wall of the hollow silicon dioxide microsphere is connected with an organic molecule long chain through a silane coupling agent; the component B comprises the following components in parts by weight: 30-50 parts of hyperbranched epoxy resin, 15-30 parts of a plasticizer, 30-60 parts of a cross-linking agent, 0.5-5 parts of an accelerant and 0.5-5 parts of a stabilizer. The sealant can ensure excellent mechanical properties while reducing the density.

The invention discloses a power transmission line ablation repair conductive oil gel and a preparation method of a filler thereof, the conductive oil gel comprises a component A and a component B. The component A comprises 45%-60% by mass of ethanol, 10%-20% by mass of ethylene glycol, 10%-20% by mass of dipotassium adipate and 10%-20% by mass of liquid polysulfide rubber. The mass fraction of the adipic acid dipotassium salt is 10-20%; the mass fraction of liquid polysulfide rubber is 2-4%; and the component B is poly [(2-oxiranyl)-1, 2-cyclohexanediol] 2-ethyl-2-(hydroxymethyl)-1, 3-propylene glycol ether. The preparation method comprises the following steps: mixing ethanol and dipotassium adipate in the component A, then adding ethylene glycol and liquid polysulfide rubber, and finally adding the component B; according to the use method, the conductive oil gel is used for preparing a filling agent for cable repair. According to the invention, the ablated cable can be simply, conveniently and rapidly repaired, so that the cable with the ablated phenomenon can continue to work, and the cable does not need to be replaced. The cable life is prolonged.

The invention provides a salt-spray anticorrosive coating based on three-stage synergistic dynamic self-repairing and a preparation method thereof, and belongs to the technical field of corrosion inhibition of metal materials of ocean engineering equipment. The salt spray anticorrosive coating comprises a zinc oxide / graphene quantum dot heterojunction enhanced epoxy layer, a polysulfide rubber / polyurethane dynamic chemical bond self-repairing layer and a polycaprolactone-based laser structured super-hydrophobic surface layer which are sequentially arranged from bottom to top, and adding a microcapsule which takes benzotriazole as a core material and polyurea as a shell material into the polycaprolactone-based laser structured super-hydrophobic surface layer to obtain the environment response type intelligent anticorrosive coating. The salt mist anti-corrosion coating or the environment response type intelligent anti-corrosion coating based on three-level collaborative dynamic self-repairing can be seamlessly integrated in key parts such as a hydraulic pipeline and a winch cabin frame of a cable logging unit, and the technical span from passive protection to active intervention is achieved; and a subversive solution is provided for full-life-cycle corrosion prevention of marine equipment.

The application discloses a kind of high weather-resistant anticorrosive epoxy resin paint and preparation method thereof, it is related to paint field, the high weather-resistant anticorrosive epoxy resin paint includes following weight parts raw materials: modified epoxy resin 50-55 parts, amino resin 30-35 parts, urea-formaldehyde resin 15-17 parts, modified polysulfide rubber 10-12 parts, titanium white 8-10 parts, kaolin 3-5 parts, dispersing agent 0.5-1.0 parts, leveling agent 0.6-0.8 parts, defoaming agent 0.2-0.4 parts, drying agent 0.8-1.0 parts and solvent 15-20 parts.The modified epoxy resin is obtained by introducing diazene fluorene structure into epoxy resin molecular chain, glass flake;The modified polysulfide rubber is obtained by introducing POSS, hydroxyl and alkane long chain into polysulfide rubber molecular chain.The epoxy resin paint of the application has excellent corrosion resistance, mechanical strength, weather resistance in high temperature and high humidity environment, and is worth popularizing and using.

The invention provides a preparation method and application of a multi-sulfur polymer. The preparation method comprises the following steps: mixing a dichloro intermediate and a sodium polysulfide aqueous solution, and carrying out condensation polymerization in a formed mixed system to prepare a polysulfide polymer; an organic solvent exists in the mixed system, and the organic solvent is selected from C6-C9 aromatic hydrocarbons. According to the preparation method disclosed by the invention, salt after condensation polymerization can be quickly and efficiently separated, so that the quality of liquid polysulfide rubber obtained during cracking of the polysulfide polymer is improved, and the production efficiency of a production device is greatly improved.

The invention discloses a wear-resistant quick-dry hot-melt marking material and a preparation method thereof, and relates to the technical field of marking coatings. The wear-resistant quick-dry hot-melt marking material prepared by the invention is prepared from modified petroleum resin, titanium dioxide, filler, glass beads, crosslinked polyethylene wax and auxiliaries, the modified petroleum resin is prepared by reacting hydroxyl hyperbranched polysiloxane, epoxy polyol, dimethyl triphenylmethane tetraisocyanate and amino polysulfide rubber in petroleum resin, so that the strength and the heat resistance are effectively improved, and the service life of the hot-melt marking material is prolonged; the cross-linked polyethylene wax is prepared by reacting polyoxyethylene ether maleic anhydride with polypropylene carbonate and then cross-linking with polyethylene wax, and the polyoxyethylene ether maleic anhydride is prepared by copolymerizing diallyl polyoxyethylene ether and maleic anhydride, so that the drying time can be shortened.

The invention provides a multi-sulfur polymer cracking method and application thereof. The cracking method of the multi-sulfur polymer comprises the following steps: contacting an organic solution containing the multi-sulfur polymer with an aqueous solution of a cracking agent, and carrying out cracking reaction to obtain the low-molecular-weight multi-sulfur polymer, during the cracking reaction, at least part of the organic solvent is evaporated out. By adopting the cracking method disclosed by the invention, the operation time of cracking post-treatment can be greatly saved, the wastewater generation amount is reduced, meanwhile, the residual cracking agent and a cracking reaction byproduct sodium thiosulfate can be cleaned, the risk that sodium thiosulfate reacts with acid to generate elemental sulfur during later acidizing treatment is avoided, and the quality of a polysulfide rubber product is improved.

The invention relates to the technical field of polymer / nano inorganic matter composite materials, in particular to a graphene nano titanium alloy epoxy polymer and a preparation method thereof.The graphene nano titanium alloy epoxy polymer is prepared from epoxy resin, liquid polysulfide rubber, metal titanium powder, high-purity graphite powder, a silane coupling agent, polyvinylpyrrolidone, organobentonite and a mixed solvent; after freezing treatment of high-purity graphite powder and preparation of a polymer solution, the polymer solution, metal titanium powder and the frozen high-purity graphite powder are put into a planetary ball mill for ball milling, and the graphene / nano titanium alloy epoxy polymer is prepared. The graphene nano titanium alloy epoxy group polymer prepared by the invention is matched with an epoxy curing agent to prepare a special anticorrosive coating, and the special anticorrosive coating has the advantages of temperature resistance, weather resistance, stain resistance, excellent mechanical properties and ultrahigh heavy corrosion resistance. A certain amount of graphene / nano titanium alloy epoxy polymer is added into the conventional epoxy anticorrosive paint, so that the comprehensive performance of the conventional epoxy anticorrosive paint can be remarkably improved.

This invention relates to the field of antique building material preparation technology, specifically to an antique building material and its preparation method. The raw materials, calculated as 100 parts in total, include 35 parts of cedar wood powder, 28 parts of epoxy resin E51, 12 parts of bamboo fiber powder, 10 parts of heavy calcium carbonate, 5 parts of diethylenetriamine, 3 parts of coupling agent KH-550, 2 parts of antioxidant 1010, and 3 parts of polysulfide rubber. The method includes the following steps: S1, raw material pretreatment stage; S3, molding stage; S4, post-treatment stage. This invention uses natural cedar wood powder and bamboo fiber powder as core raw materials, realizing the resource reuse of agricultural and forestry waste, reducing dependence on non-renewable resources, and possessing both environmental value and resource recycling significance. The raw materials contain no harmful chemical additives, and all components meet relevant safety standards. During processing, sealed equipment and dust collection devices reduce pollutant emissions, and the finished product has minimal environmental impact after disposal, meeting the needs of green production and sustainable development.