17 results about "Bisphenol" patented technology

The invention discloses a preparation method of polyarylether containing quaternary ammonium side groups, comprising the following steps: a) adding bisphenol containing tertiary amine side groups, a halogenated organism monomer or nitrated organism monomer, a catalyst and a solvent, thus obtaining mixed solution; b) obtaining polyarylether containing tertiary amine side groups by polymerization reaction of the mixed solution obtained from the step a) at temperature of 30-180 DEG C; and c) adding halogenated hydrocarbon in the polyarylether containing tertiary amine side groups, and stirring at temperature of 0-100 DEG C, thus obtaining the polyarylether containing quaternary ammonium side groups. The invention also discloses a polyarylether containing quaternary ammonium side groups, and the sites and the number of the quaternary ammonium side groups are controllable. Compared with the prior art, the materials used in the invention is bisphenol containing tertiary amine side groups, no additional tertiary amine side groups or quaternary ammonium side groups are introduced in the generation process of the polyarylether containing quaternary ammonium side groups, so that the sites and the number of the quaternary ammonium side groups in the polyarylether are controllable, in addition, the conversion rate is complete and the laboratory yield is higher than 95%.

The invention discloses a method for preparing a wollastonite toughened epoxy resin. The method comprises the following steps: (1) hydrolyzing a silane coupling agent in a mixed solution of absolute ethyl alcohol and deionized water, adding the solution into a flask, and adding wollastonite; (2) placing the flask in a water area, conducting reaction under electromagnetic stirring, performing suction filtration on the mixed solution, and drying the precipitate in a vacuum oven; (3) grinding the dried modified wollastonite in a planetary ball mill, thereby obtaining the modified wollastonite; (4) mixing the modified wollastonite and a bisphenol A epoxy resin 127, and grinding through a three-rod grinder for 3 hours, thereby obtaining a master batch with solid content, wherein the rod spacing of the grinder is 15pm, the grinding time is 2 hours, and a mass ratio of the modified wollastonite to the epoxy resin is 2:3; (5) uniformly mixing the epoxy resin, methyl tetrahydrophthalic anhydride and modified wollastonite master batch, and adding an initiator BDMA, a release agent silicone oil and an antifoaming agent BYK-530 for mixing, so that the stability of the modified wollastonite in the epoxy resin system is improved.

The invention provides a preparation method of an energy-saving and environment-friendly flame retardant tetrabromobisphenol A. The preparation method comprises the following steps of: (1) adding a certain amount of bisphenol A into chlorobenzene, stirring for 0.5 h until the materials are uniformly mixed, and dropwise adding bromine and hydrogen peroxide at the same time at a specific temperature to obtain a tetrabromobisphenol A solution; and (2) heating the reaction system, carrying out curing reaction, standing after curing, separating out a water phase, collecting an organic phase, carrying out standing layering treatment for four times, cooling the organic phase collected after four-time standing layering to 8 DEG C by adopting frozen brine, and carrying out suction filtration to obtain a tetrabromobisphenol A product. According to the preparation method disclosed by the invention, the mother liquor can be used for more than 100 times, the generation of waste residues is reduced, and the use amount of sodium nitrite can be saved by 50%; after the mother liquor is recycled for 100 times, the chromaticity of the product is 20, the purity is 99.35%, and the yield is 99.8%; and the comprehensive yield of the product is 99.6%, and the average purity of the product is 99.54%.

The invention relates to a high-bonding-strength conductive adhesive for repairable microelectronic assembly and a preparation method thereof. The high-bonding-strength conductive adhesive comprises the following raw materials in percentage by weight: resin, conductive filler, a curing agent, an active diluent and an additive, wherein the resin is prepared from the following raw materials in percentage by weight: bisphenol A epoxy resin and bisphenol F epoxy resin; the conductive filler is prepared from the following raw materials in percentage by weight: flake silver powder and spherical silver powder; the curing agent is prepared from the following raw materials in percentage by weight: 2-ethyl-4-methylimidazole, 1-cyanoethyl-2-ethyl-4-methylimidazole, polyether amine 400 and triethanolamine; the reactive diluent is prepared from the following raw materials in percentage by weight: polyethylene glycol diglycidyl ether and polypropylene glycol diglycidyl ether; and the additive is a substance capable of achieving a thickening effect. The problems that an existing conductive adhesive is poor in conductivity, poor in bonding strength, incapable of being detached and repaired after bonding and the like are solved. The adhesive is widely applied to bonding materials for circuit connection of electronic components.

The invention provides graphene oxide composite microspheres, a preparation method thereof and application of the graphene oxide composite microspheres in bisphenol compound detection, and belongs to the technical field of environment detection. Graphene oxide/polystyrene core-shell composite microspheres are prepared by adopting a layer-by-layer self-assembly technology to serve as an adsorption material, and then bisphenol compounds in a water body are adsorbed and desorbed. The application comprises the steps of: filtering a water body containing bisphenol pollutants, and removing suspended matters in the water body; adsorbing the obtained filtrate through the adsorption material at room temperature; and finally, detecting the content of the bisphenol compounds by using a liquid chromatography-tandem mass spectrometry technology. After adsorption is carried out for a certain time and saturation is achieved, adsorption is stopped, an organic solvent is used for desorption, and the content of bisphenol compounds is detected. The adsorption material after desorption can be repeatedly recycled, so that the adsorption material has good practical application value.

The invention provides a bisphenol A salt preparation method, wherein bisphenol A and an inorganic strong base are directly subjected to a solvent-free reaction to obtain a bisphenol A salt. The preparation method comprises the following steps: (1) crushing and mixing bisphenol A and an inorganic strong base to obtain an ultrafine mixture; (2) heating and stirring the mixture, and carrying out a reaction to obtain a crude product; and (3) carrying out reduced pressure distillation on the crude product to remove residual excessive bisphenol A, and cooling to obtain bisphenol A salt solid powder. The method has the advantages that no solvent is used in the whole reaction process, the reaction is simple and rapid, the yield is high, and the product purity is high.

The invention provides a low-voltage heating carbon fiber cloth/graphene composite material. The low-voltage heating carbon fiber cloth/graphene composite material comprises an ethylene propylene diene monomer layer A, a graphene coating, carbon fiber cloth and an ethylene propylene diene monomer layer B which are in contact in sequence, the graphene coating is prepared from graphene slurry, and the graphene slurry is prepared from the following components in percentage by weight: 5 to 8 percent of graphene, 0.5 to 1 percent of CWF-6028 antioxidant, 10 to 15 percent of bisphenol F type epoxy resin and 10 to 15 percent of epoxy curing agent. The ethylene propylene diene monomer is selected as a carrier, so that the electricity utilization safety of the composite material in the use process can be protected. According to the graphene slurry coating modified carbon fiber cloth disclosed by the invention, the electrical conductivity and thermal conductivity of the carbon fiber cloth are improved, the electrical resistivity is smaller, and a large amount of heat can be generated under the action of low voltage of 36V. The invention also provides a preparation method of the low-voltage heating carbon fiber cloth/graphene composite material.

The invention discloses an anti-fouling flame-retardant fluorine-containing polyester fiber and a preparation method thereof. The preparation method of the anti-fouling flame-retardant fluorine-containing polyester fiber comprises the steps that a fluorine-containing diol monomer is prepared by reacting hexafluoropropylene oxide with hexafluorobisphenol A; copolyester is prepared by transesterification and polycondensation of dimethyl-p-phthalate and ethylene glycol; and polyester fiber is obtained by melt spinning. Fluorine atoms are introduced through copolymerization modification, a fiber is endowed with hydrophobic, anti-fouling and flame-retardant characteristics, and the problems of aging and durability of performance are fundamentally solved. The viscosity of copolyester is controllable in the process of polycondensation, and the performance of a product is stable and application prospects in the preparation of antifouling and flame-retardant textiles are broad.