32 results about "Bisphenol AF" patented technology

The invention discloses a high-temperature-seawater-resistant and low-pressure-change fluororubber composition, vulcanized rubber as well as a preparation method and application thereof. The high-temperature-seawater-resistant and low-pressure-change fluororubber composition comprises a raw rubber matrix, a reinforcing agent, an active agent, a compound vulcanizing agent, an accelerant, an assistant crosslinking agent, an acid acceptor and a release agent, the compound vulcanizing agent is a mixture of bisphenol AF and bis (2, 5-dimethyl-2, 5-diphenol); the reinforcing agent is a mixture of carbon black and graphite powder; the acid acceptor is a mixture of high-activity magnesium oxide and calcium hydroxide; and the active agent is active zinc oxide. According to the invention, bisphenol AF and bis 2, 5 are adopted as a compound vulcanization system, activated zinc oxide is adopted as an active agent of the compound vulcanization system, and carbon black and lamellar graphite powder are adopted as reinforcing fillers and are jointly added into fluororubber to act together with other components; the obtained fluororubber composition can make the prepared vulcanized rubber have high strength, high elongation at break, high-temperature seawater resistance and low compression set, and can meet the application requirements of the valve seat ring of the marine butterfly valve.

The present application relates to a kind of medicine sealing plug and its preparation method, its sealing plug includes core body, self-sealing body and sealing body, the lower end of core body forms the plug neck of big cone shape from top to bottom, the center of plug neck forms the cone hole of big cone shape from top to bottom;The components of core body include brominated butyl rubber, white carbon black, dicumyl peroxide, zinc oxide, stearic acid, amino silane coupling agent;Self-sealing body is conical to be embedded in cone hole, the components of self-sealing body include brominated butyl rubber, white carbon black, polyisobutylene, sulfur, TBBS, zinc oxide, stearic acid;Sealing body is conical sleeve to be set on plug neck, the components of sealing body include fluorine rubber, white carbon black, perfluoropolyether plasticizer, bisphenol AF, BPP, heat stabilizer;Core body, self-sealing body and sealing body are formed by moulding vulcanization.

The invention relates to the technical field of composite material processing, in particular to a high-dimensional-stability and high-conductivity modified polyaryletherketone composite material and a preparation method thereof. Comprising the following materials: a modified carbon material with at least one-dimensional scale, bisphenol AF type polyether-ether-ketone as an interface modifier, and PAEK resin; the structure of the modified carbon material is that a nano conductive material is attached to the surface of a carbon nano material in situ, and the nano conductive material is nano conductive metal or nano conductive metal oxide; after uniform mixing, melt blending is performed to obtain granules, and then crystallization molding is performed to obtain a composite material; the conductive carbon material is treated to form a composite conductive structure, and the interface modifier is combined, so that the conductivity and the dimensional stability of the composite material can be greatly improved while filler agglomeration is reduced.

The invention discloses a self-repairing fluorinated silicone rubber sealing material, and belongs to the technical field of rubber. The self-repairing type fluorosilicone rubber sealing material is prepared from the following raw materials in parts by weight: 55 to 65 parts of fluorosilicone rubber, 15 to 25 parts of fluororubber, 10 to 15 parts of double-wall repairing microcapsules, 4.5 to 5.0 parts of compatibilizer, 1.5 to 3.0 parts of bisphenol AF, 1.0 to 2.0 parts of accelerant BPP, 2.0 to 3.0 parts of acid acceptor and 3.0 to 6.5 parts of vulcanizing agent BIBP. The core material of the double-wall repairing microcapsule is hydrogen-containing fluorosilicone oil and a Karstedt catalyst, the inner wall of the double-wall repairing microcapsule is made of polyurethane, and the outer wall of the double-wall repairing microcapsule is made of polyurea. The preparation method comprises the following steps: pretreating a double-wall repairing microcapsule by using a compatibilizer, mixing the pretreated double-wall repairing microcapsule with other raw materials, carrying out two-stage vulcanization treatment to obtain the self-repairing fluorinated silicone rubber sealing material, and releasing a repairing agent when the rubber sealing material is actually damaged to realize chemical bond-level repairing.

This invention relates to the fields of environmental and bioanalytical technology, and particularly to a method for simultaneous pretreatment and detection of bisphenol S and bisphenol AF in biological tissues. The technical solution includes a framework process for simultaneous pretreatment and detection of bisphenol S and bisphenol AF in biological tissues. This invention establishes a dual-solvent secondary extraction system composed of n-hexane and methyl tert-butyl ether, achieving differentiated adaptation to different tissue matrices. By combining the advantages of non-polar and moderately polar solvents, it can simultaneously handle the relatively highly polar bisphenol S and the relatively non-polar bisphenol AF in a single extraction process. Furthermore, this method sets key physical parameters during the extraction process according to the histological characteristics of each organ. For heart and lung tissues, specific ultrasonic power is used to ensure thorough cell disruption; while for liver and spleen with high lipid content, different power and time are used to ensure the full release of lipid-bound target substances.

The invention relates to the technical field of rubber, in particular to a high-temperature-resistant rubber-based elbow and a preparation method thereof. The preparation method comprises the following steps: blending a flexible flame-retardant acrylic copolymer and fluororubber, stirring, dissolving, demulsifying, washing with water, and drying in vacuum to obtain the modified fluororubber. Mixing butyl rubber, vinyl modified white carbon black, sulfur, activating agent zinc oxide and accelerating agent 2-mercaptobenzimidazole, and performing mixing and calendering to obtain an inner rubber layer; mixing modified fluororubber, vinyl modified white carbon black, bisphenol AF, an activator calcium hydroxide and an accelerant benzyl triphenyl phosphorus chloride, and carrying out mixing and calendering to obtain an outer rubber layer; an inner rubber layer, a nylon fabric layer and an outer rubber layer are sequentially laid, steel wires are wound after vulcanization, and the rubber-based elbow is obtained; and then the connecting piece and the rubber-based elbow are assembled and formed, and a finished product is obtained. The finished product prepared by the invention has good high-temperature resistance, flame retardance and mechanical properties, so that the finished product has a wide application prospect in the technical field of rubber.

The utility model relates to a kind of enhanced edge sealing teflon adhesive tape structure, include non-active PTFE film, first fluorine rubber being arranged in non-active PTFE film layer lower layer, active PTFE film being arranged in first fluorine rubber lower layer, second fluorine rubber being arranged in active PTFE film lower layer, viscose layer being arranged in second fluorine rubber lower layer;The first fluorine rubber and active PTFE film are mutually staggered and set multiple layers;So first fluorine rubber and second fluorine rubber overflow after heat pressing to form ladder with non-active PTFE film layer and active PTFE film;First fluorine rubber and second fluorine rubber overflow end are smeared with bisphenol AF for vulcanization;The utility model forms ladder overflow glue by active PTFE film and fluorine rubber superposition heat pressing Form mechanical anchoring effect, lock interfacial, block edge permeation path, and bisphenol AF is in edge local crosslinking fluorine rubber, form the "sealing frame" of high crosslinking density, so as to can significantly improve edge sealing reliability.

The application relates to the technical field of high polymer material processing, in particular to a high-strength modified polyaryletherketone profile and a preparation method thereof, S1, chopped fibers are subjected to surface activation treatment after being heated and impurity-removed, then are subjected to ultrasonic immersion treatment in an interface treatment solution, and the interface treatment fibers are obtained by taking out and drying; the interface treatment agent contained in the interface treatment solution is a bisphenol AF type polyaryletherketone PI-PAEK containing an imide side group; S2, the interface treatment agent is used or not used to melt blend with polyaryletherketone resin as a matrix resin, and the interface treatment fibers are subjected to melt blending extrusion, granulation and molding to obtain the high-strength modified polyaryletherketone profile; the modified polyaryletherketone profile has high mechanical properties, a high glass transition temperature and a low thermal expansion coefficient.

The invention discloses a strong-alkali-resistant water-based industrial paint and a preparation method thereof, and relates to the technical field of paints. When the strong-alkali-resistant water-based industrial paint is prepared, polysiloxane and allyl glycidyl ether react to prepare epoxidized polysiloxane; the preparation method comprises the following steps: reacting a graphene nanosheet with glycidyl furfuryl ether and a phosphorus-containing furan monomer to prepare a pre-modified graphene nanosheet; the pre-modified graphene nanosheet and 2, 4-dihydroxy benzophenone are subjected to a reaction, and a modified graphene nanosheet is prepared; the preparation method comprises the following steps: reacting bisphenol AF with epoxy chloropropane to prepare a fluorine-containing epoxy monomer; the preparation method comprises the following steps: emulsifying epoxy resin, a fluorine-containing epoxy monomer and epoxidized polysiloxane to prepare an epoxy resin emulsion; and uniformly mixing the epoxy resin emulsion, the modified graphene nanosheets and a curing agent to prepare the strong-alkali-resistant water-based industrial paint. The strong-alkali-resistant water-based industrial paint prepared by the invention has excellent strong alkali resistance, flame retardance and aging resistance.

This invention discloses a polyester cable coated with a polyurethane and rutin composite coating and its preparation method. The method involves coating the surface of a polyester cable with a fluorinated polyurethane and rutin composite coating. The method involves reacting diisocyanate, polyol, and catalyst to obtain a prepolymer, then adding bisphenol AF, a small molecule chain extender, and tetrahydrofuran to obtain a fluorinated polyurethane solution. A rutin solution is prepared and mixed with the fluorinated polyurethane solution to obtain a fluorinated polyurethane and rutin composite material solution. The polyester cable is then immersed in the fluorinated polyurethane and rutin composite material solution, removed, air-dried, and oven-dried. This process is repeated several times to obtain the polyester cable coated with the polyurethane and rutin composite coating. The polyester cable of this invention has UV resistance, seawater corrosion resistance, and marine antifouling properties. The preparation method is simple, and it has broad application prospects in marine engineering, ship mooring, and marine fisheries.

The invention discloses a method for synthesizing high-purity bisphenol AF, which comprises the following reaction steps: taking phenol and hexafluoroacetone trihydrate as raw materials, taking pentacyanocyclopentadiene as a catalyst, and heating and reacting in a protective atmosphere; after the reaction is finished, adding a NaOH aqueous solution into the reaction liquid to adjust the pH to 7, and extracting and separating the liquid by using dichloromethane; and evaporating the dichloromethane extract containing bisphenol AF to dryness to obtain a bisphenol AF crude product, and recrystallizing the bisphenol AF crude product with methyl tert-butyl ether to obtain a bisphenol AF pure product. The catalyst adopted in the invention avoids the defect of insufficient acidity of a conventional catalyst while avoiding a high-corrosivity catalyst, so that the production operation is mild, and the reaction production equipment is conventional. The used catalyst is high in boiling point, stable in structure, capable of being recycled and environmentally friendly, and a new technical method is provided for industrial production of high-quality bisphenol AF.

The application provides a raw material composition of optical glue, the optical glue and a preparation method and application thereof.The raw material composition of the optical glue comprises the following components in parts by weight: 10-25 parts of bisphenol AF epoxy resin; 65-85 parts of fluorine-containing acrylic ester prepolymer; 1-5 parts of silane coupling agent; 0.1-2 parts of cationic photo initiator; and 0.1-2 parts of cationic thermal initiator; wherein the fluorine-containing acrylic ester prepolymer is obtained by reacting fluorine-containing acrylic ester monomers and epoxy acrylic ester compounds under the condition of ultraviolet light irradiation.The optical glue has low refractive index and high light transmittance, is suitable for optical communication, electronic device packaging and the like, meets the requirements of material bonding and high-temperature and high-humidity environment, has interface enhancement, multifunctionality, and low dielectricity, high hydrophobicity and high-temperature resistance.

The invention discloses fluororubber for a puncture-resistant gasket as well as a preparation method and application of the fluororubber, and relates to the technical field of fluororubber gasket preparation. Comprising 100 parts of a fluororubber polymer, 5-8 parts of an acid acceptor, 21-32 parts of a filler, 1-2.5 parts of a cross-linking agent and 0.5-1 part of an accelerant, the cross-linking agent comprises bisphenol AF; the accelerant comprises an accelerant BPP. The gasket prepared from the fluororubber has the advantages that the puncture force is weakened, and the sealing property is higher.

The application discloses a strong-alkali-resistant waterborne industrial paint and a preparation method thereof, and relates to the technical field of paints. In the preparation of the strong-alkali-resistant waterborne industrial paint, epoxy polyorganosiloxane is prepared by reacting polysiloxane and allyl glycidyl ether; pre-modified graphene nanosheets are prepared by reacting graphene nanosheets, glycidyl furfuryl ether and phosphorus-containing furan monomers; modified graphene nanosheets are prepared by reacting the pre-modified graphene nanosheets and 2,4-dihydroxybenzophenone; fluorine-containing epoxy monomers are prepared by reacting bisphenol AF and epichlorohydrin; epoxy resin emulsion is prepared by emulsifying epoxy resin, the fluorine-containing epoxy monomers and the epoxy polyorganosiloxane; and the strong-alkali-resistant waterborne industrial paint is prepared by uniformly mixing the epoxy resin emulsion, the modified graphene nanosheets and a curing agent. The strong-alkali-resistant waterborne industrial paint prepared by the application has excellent strong-alkali resistance, flame resistance and anti-aging performance.

The invention relates to the technical field of films, in particular to a multi-layer composite film which is prepared from at least one layer of a polyaryletherketone material film, at least one layer of a polyimide material film and at least one layer of a bisphenol AF type polyaryletherketone material containing an imide side group or a film of the bisphenol AF type polyaryletherketone material through laminating and hot-pressing compounding. The bisphenol AF type polyaryletherketone material containing the imide side group or the film of the bisphenol AF type polyaryletherketone material is arranged between each layer of polyaryletherketone material film and each layer of polyimide material film; the multilayer composite film formed after lamination has a good interfacial compatibility effect and high peel strength, and can give full play to the advantages of polyaryletherketone and polyimide materials to the greatest extent.

The application discloses a kind of radiation-resistant sealing materials for photoetching process and preparation method thereof, belong to high molecular sealing material technical field.The material is made of fluorine rubber raw rubber, 1-iodine perfluorohexane or 1-iodine perfluorooctane, reinforcing filler, bisphenol AF vulcanizing agent and benzyl triphenyl phosphonium chloride accelerator, etc.According to specific weight part, it is made by batch dropwise mixing and gradual temperature two-step vulcanization.The application utilizes perfluoroalkyl iodide under plasma C-I bond preferentially homolysis generates I·, terminates fluorine rubber free radical chain degradation;And through theoretical calculation and ion chromatography verification, ensure that processing process does not decompose, no corrosive iodine ion release in service.The application breaks the application technology prejudice of halogen, solves the defect that conventional fluorine rubber particle releases high, plasma life is short, avoids the problem that perfluoroether rubber is high in cost and difficult to process, the obtained material is low in particle release amount, long in radiation life, small in compression permanent deformation, adapts to 7nm and below node semiconductor equipment sealing demand, easy to scale up.

The invention provides a phenolic curing agent for a low-gloss epoxy resin powder coating and a preparation method of the phenolic curing agent, and belongs to the technical field of powder coatings. According to the present invention, bisphenol A diglycidyl ether, bisphenol AF, citric acid, 1, 6-hexanediol diglycidyl ether, E-20 epoxy resin, trimethylolpropane triglycidyl ether, 4, 4 '-(1-phenethyl) bisphenol and the like are mainly adopted as raw materials to carry out a reaction so as to obtain the epoxy resin; the finally obtained phenolic curing agent product is obtained by carrying out high-temperature melt blending and re-polymerization on two polymers with different molecular structures, and the final product as the phenolic curing agent and E-12 epoxy resin are subjected to curing activity difference and micro-phase separation effect in the high-temperature curing process, so that the prepared powder coating has the advantages of high-temperature curing property, high-temperature curing property and the like. The self-delustering coating has excellent self-delustering capacity under the condition that a delustering agent is not added, the gloss of a coating film cured at high temperature is low, the surface is flat and smooth, and the properties such as impact resistance, hardness and long-time boiling resistance of the coating film are excellent.

The invention discloses a pentacyanocyclopentadiene supported catalyst and application of the pentacyanocyclopentadiene supported catalyst in bisphenol AF synthesis. The bisphenol AF synthesis steps are as follows: phenol and hexafluoroacetone trihydrate are taken as raw materials, the pentacyanocyclopentadiene supported catalyst is taken as a catalyst, and under the protection of nitrogen, heating and reaction are performed; and after the reaction is finished, cooling to room temperature, filtering and recovering the catalyst, carrying out reduced pressure distillation on filtrate to remove excessive phenol, recrystallizing residues by using an ethanol / water solution, and filtering to obtain bisphenol AF. The pentacyanocyclopentadiene supported catalyst is adopted, the acidity is enhanced through the pi-pi conjugation effect, meanwhile, the stability and recoverability of the catalyst are improved, the activity of the catalyst is high, the yield of bisphenol AF can reach 95% or above, and the purity of bisphenol AF is larger than 99.5%. Meanwhile, the reaction condition is mild, compared with a homogeneous reaction system, the reaction temperature is remarkably reduced, the equipment requirement is low, and the production cost is reduced by 20-30% compared with that of a traditional method.

The invention relates to a medicine sealing plug and a preparation method thereof, the sealing plug comprises a core body, a self-sealing body and a sealing body, a big-end-up conical plug neck is formed at the lower end of the core body, and a big-end-up conical hole is formed in the center of the plug neck; the core body comprises the following components: brominated butyl rubber, white carbon black, dicumyl peroxide, zinc oxide, stearic acid and an amino silane coupling agent; the self-sealing body is cone-shaped so as to be embedded in the cone hole; the self-sealing body comprises the following components: brominated butyl rubber, white carbon black, polyisobutene, sulfur, TBBS, zinc oxide and stearic acid; the sealing body is in a conical sleeve shape so as to be arranged on the plug neck in a sleeving mode. The sealing body comprises fluororubber, white carbon black, a perfluoropolyether plasticizer, bisphenol AF, BPP and a heat stabilizer. And the core body, the self-sealing body and the sealing body are molded and vulcanized.

The invention provides a novel cross-linking agent, fluororubber and a preparation method and application thereof, and belongs to the technical field of chemical production. According to the invention, p-hydroxystyrene and perfluoropolyether allyl ether are copolymerized to synthesize a macromolecular cross-linking agent with a poly-p-hydroxystyrene structure, and the prepared macromolecular cross-linking agent is applied to cross-linking of fluororubber for the first time, so that the compatibility of the macromolecular cross-linking agent in the fluororubber is remarkably improved; compared with bisphenol AF, the bisphenol AF crosslinking agent with the structure can effectively increase the elongation at break of fluororubber, and has a good application prospect.

The invention discloses a heat-resistant rubber sealing ring for a pipeline interface and a preparation method thereof. EPDM (ethylene propylene diene monomer) and FKM (fluororubber) are synergistically combined, and performance customization is realized through a differential process by regulating and controlling the proportion, optimizing compatibility and a vulcanization system (dicumyl peroxide, bisphenol AF and TAIC). The heat-resistant rubber sealing ring disclosed by the invention has good mechanical properties and aging resistance in a 130-DEG C hot water environment, the leakage risk is reduced, the maintenance cost and safety accidents are reduced, the continuity of heat supply service is ensured, and the energy-saving and efficient requirements of the heat supply industry are met.

The invention relates to a method for simultaneously determining the contents of 27 phenolic compounds in textiles, which comprises the following steps: carrying out pretreatment steps such as sample cutting, methanol ultrasonic extraction, organic phase filter membrane filtration and the like, adopting a liquid chromatography-tandem mass spectrometry technology, taking a C18 chromatographic column as a separation column, and taking an ammonium acetate aqueous solution and methanol as mobile phases for gradient elution, and determining the content of 27 phenolic compounds in the textiles. And detection is carried out in a multi-reaction monitoring mode in an electrospray negative ion mode. A standard curve is established by an external standard method, and quantitative analysis is realized by combining a blank control signal, constant volume and sample quality. Synchronous detection of 27 phenolic compounds in the textile is achieved for the first time, the detection limit can reach the level of mg / kg or even lower (for example, bisphenol S and bisphenol AF are 0.001 mg / kg), and the method has the advantages of being easy and convenient to operate, high in sensitivity, good in reproducibility and the like and is suitable for quality monitoring of various textile materials such as cotton, polyester and chinlon.

The invention relates to the technical field of fluororubber materials, in particular to a preparation method of ethanol gasoline resistant fluororubber, which comprises the following steps: plastifying fluororubber raw rubber with specific composition, mixing with an acid acceptor, a reinforcing agent and a processing aid, and judging a mixing end point through online power monitoring to obtain mixed rubber A; remixing the rubber compound A, adding bisphenol AF and an accelerant BPP, and judging the vulcanizing uniformity through Mooney viscosity to obtain final mixed rubber B; performing first-stage vulcanization: performing mold pressing vulcanization, wherein the vulcanization time is dynamically set based on t90; and second-stage vulcanization: vulcanizing after temperature programming, and judging the vulcanization completeness through thermogravimetric analysis. Through combination of a unique raw rubber formula and an optimized preparation process, the problems that existing fluororubber is too high in swelling rate and rapid in physical property reduction when being in contact with ethanol gasoline for a long time are solved, and the prepared fluororubber material has excellent ethanol gasoline swelling resistance, high-temperature aging resistance and low compression set.

A magnet for an anti-ice system includes a core and at least one coil wound about a perimeter of the core. The core includes a first material having a first epoxy composition. The at least one coil includes a second material having a second epoxy composition. The first epoxy composition and the second epoxy composition each include a bisphenolic resin composition including bisphenol AF and at least one of a filler or a conductivity modifier.

The invention discloses a method for decolorizing a bisphenol AF crude product without using activated carbon, which is characterized by comprising the following steps: dissolving the bisphenol AF crude product in an acetone-water mixed solvent, adjusting the pH value to be a weak acid reaction system, adding a reducing agent thiourea dioxide, stirring and reacting for 1-4 hours at a set temperature, cooling and filtering to obtain a decolorized crude product, and filtering to obtain the decolorized bisphenol AF crude product. And adding the decolorized crude product into a diethyl ether-dichloromethane mixed solvent, stirring for a certain time at 40 DEG C, then cooling to 5-20 DEG C by a program, crystallizing, and filtering to obtain a white solid. According to the method, thiourea dioxide is used as a reducing agent, thiourea dioxide is released in a weak acid system, benzoquinone pigments are selectively reduced, bisphenol AF with the purity of 99.7% can be obtained after recrystallization, the yield is 92.6%, the color is bright and white, reaction operation is simple, the reducing agent is cheap and easy to obtain, the yield and purity are high, the decoloration time is short, the production cost is low, and environmental protection is achieved; the generation of activated carbon solid waste in a traditional treatment method is avoided, and the economic benefit is greatly improved.

The invention discloses high-filling modified fluororubber and a production process thereof, and belongs to the field of fluororubber. The high-filling modified fluororubber comprises the following raw materials in parts by mass: 60 parts of fluororubber, 35-50 parts of silane modified calcium carbonate, 5-8 parts of nano montmorillonite, 1-2 parts of bisphenol AF, 0.2-0.4 part of BPP and 3-4 parts of active magnesium oxide. The nano montmorillonite is subjected to dual modification treatment by using perfluoropolyether terminated by fluorosilane and ethyoxyl silane. The silane modified calcium carbonate serving as rigid particles can be embedded between nano-montmorillonite lamellae or on the surfaces of the nano-montmorillonite lamellae to form an intercalation-coating structure, so that a remarkable reinforcing effect is achieved. After the nano-montmorillonite is subjected to double modification, the dispersity of the nano-montmorillonite in a matrix material is improved, and a perfluoropolyether flexible chain segment is also introduced, so that the low-temperature performance of the modified fluororubber in a high-filling system can be improved, and the compression permanent deformation capability of the fluororubber is improved.

The invention relates to a multi-layer composite adsorption bed and a method for improving the whiteness and purity of bisphenol AF. The multi-layer composite adsorption bed comprises an activated carbon layer, an alkaline porous substance layer and a composite adsorption layer which are sequentially arranged in the flowing direction of a material to be adsorbed, wherein the activated carbon layer is used for adsorbing chromophoric groups and metal ions; the alkaline porous substance layer is used for adsorbing and neutralizing acidic impurities; the composite adsorption layer is composed of an alkaline porous substance and a silicon-based or carbon-based adsorbent, and is used for deeply removing trace impurities and further improving whiteness. Compared with the prior art, the multi-layer adsorption bed is high in design pertinence, each layer of material performs own functions, and the adsorption efficiency is remarkably improved. The purity of the improved bisphenol AF liquid phase is up to 99.9% or above, and the whiteness is obviously improved to 97-98. The method is simple in process and convenient to operate, can effectively reduce the production cost, and has a good industrial prospect.

The invention provides a raw material composition of optical cement, the optical cement and a preparation method and application of the optical cement. The raw material composition of the optical adhesive comprises the following components in parts by weight: 10-25 parts of bisphenol AF epoxy resin; 65 to 85 parts of a fluorine-containing acrylate prepolymer; 1-5 parts of a silane coupling agent; 0.1 to 2 parts of a cationic photoinitiator; 0.1 to 2 parts of a cationic thermal initiator; wherein the fluorine-containing acrylate prepolymer is obtained by reacting a fluorine-containing acrylate monomer and an epoxy acrylate compound under the condition of ultraviolet irradiation. The optical adhesive is low in refractive index and high in light transmittance, is suitable for the fields of optical communication, electronic device packaging and the like, meets the requirements of material bonding and high-temperature and high-humidity environments, has interface enhancement and multifunctionality, and has the characteristics of low dielectric, high hydrophobicity and high temperature resistance.

This invention relates to a sheath material for submersible pump cables and its preparation method, belonging to the technical field of submersible pump cable materials. The sheath material, by weight, comprises 95-105 parts of fluororubber raw rubber, 5-15 parts of fluorinated acrylate monomer, 5-13 parts of carbon nanotubes, 1-3 parts of crosslinking aid, 1.5-2.5 parts of bisphenol AF, 3-6 parts of magnesium oxide, 0.3-0.8 parts of benzyltriphenylphosphine chloride, 1-2 parts of polytetrafluoroethylene wax, and 0.5-1.5 parts of hydroxyl silicone oil. The sheath material of this invention possesses excellent mechanical properties and damage resistance, exhibits outstanding durability and sealing performance in extreme environments, and also possesses a certain degree of self-healing capability.

The invention provides a strong-acid-resistant and high-wear-resistant composite rubber material as well as a preparation method and application thereof. The fluororubber comprises the following raw materials (in parts by mass): 100 parts of fluororubber (FKM); 20 parts of an inorganic filler; 5 parts of polytetrafluoroethylene; 2 parts of bisphenol AF; 5 parts of an accelerant BPP; 3 parts of calcium hydroxide; and 4 parts of magnesium oxide. Therefore, moderate reinforcement can be provided, and embrittlement caused by excessive crosslinking can be avoided. Meanwhile, the rubber material has excellent stability to strong oxidizing acid, is not easy to erode, is beneficial to keeping the softness and high elasticity of the rubber material, and is beneficial to reaching the target hardness. And magnesium oxide is used as an acid acceptor. The synergistic effect with calcium hydroxide is realized. And a model (such as Japanese synergy MGO (XH)-150) with high activity and large specific surface area is used, so that the acid absorption capacity is stronger. PTFE has an extremely low friction coefficient and is dispersed in rubber in the form of small particles, and when the surface of a product is rubbed, the PTFE can migrate to the surface to form a layer of self-lubricating film, so that the friction force and abrasion are greatly reduced.