15 results about "Bisphenol AF" patented technology

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.

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 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.

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 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 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.

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.