505 results about "Acid catalyzed" patented technology

The invention relates to the technical field of epoxy resin, in particular to self-repairing epoxy resin and a preparation method thereof. The self-repairing epoxy resin is prepared from the following raw materials in parts by mass: 80 to 120 parts of bisphenol A type epoxy resin, 20 to 40 parts of bisphenol F type epoxy resin, 5 to 15 parts of 1, 6-hexanediol diglycidyl ether, 1 to 3 parts of 3, 5-dimethylphenylboronic acid, 1 to 5 parts of furyl maleimide, 10 to 20 parts of dodecanedioic acid, 5 to 15 parts of butanetetracarboxylic acid, 1 to 3 parts of catalyst, 10 to 15 parts of nano silicon dioxide, 1 to 2 parts of boron nitride nanosheet and 1 to 2 parts of hyperbranched polyamidoamine. The curing agent is prepared from the following components in parts by weight: 20-30 parts of epoxy resin, 1-2 parts of sulfydryl-terminated polysiloxane, 20-30 parts of amine curing agent, 5-15 parts of reinforcing filler and 0.5 According to the invention, the balance among self-repairing capability, mechanical property and heat resistance is successfully realized; in the microcrack propagation process, fracture and recombination mechanisms of dynamic covalent bonds effectively prevent further propagation of cracks.

The invention belongs to the technical field of high polymer material synthesis, and particularly relates to an artificial antioxidant enzyme material with an interlayer structure and a preparation method of the artificial antioxidant enzyme material. The preparation method of the artificial antioxidant enzyme material comprises the following steps: dissolving an aldehyde monomer and an amine monomer in a reaction solvent, performing thermal polymerization under the action of an acid catalyst, and then loading interlayer coordination metal, and further defining an aldehyde monomer and an amine monomer as well as an interlayer coordination metal. According to the present invention, the treatment-level oxidation resistance can be achieved through the space-optimized catalysis center and the fully-conjugated frame structure, and the innovative strategy is provided for solving the inflammation-driven tissue damage through the precise oxidation-reduction regulation and the immune microenvironment engineering.

The invention relates to the technical field of heat energy storage materials, and particularly provides a silicon dioxide aerogel composite phase change heat storage material and a preparation method thereof. The method comprises the following steps: mixing an organic silicon source, absolute ethyl alcohol and deionized water according to a specific ratio, fully stirring to obtain a mixed solution, and dropwise adding an acid catalyst into the mixed solution at room temperature for hydrolysis reaction to obtain a hydrolysate; sequentially adding a drying control agent and an alkali catalyst, and standing for gelation reaction to obtain gel; adding an organic solvent to carry out aging reaction, and then adopting the organic solvent to carry out replacement for multiple times to obtain alcogel; replacing the alcohol gel with an organic solvent for multiple times to obtain wet gel, soaking the wet gel in an excessive molten phase change material, and carrying out normal-pressure solvent replacement and drying at 40 DEG C to obtain the phase change material, the loading capacity of octadecane in the obtained CPCM is about 83%, the phase change enthalpy reaches up to 192J / g, the heat conductivity is as low as 0.0812 W / m.K, and no obvious leakage occurs after 200 times of circulation.

The invention discloses a low-cost high-first-effect micron silicon negative electrode material and a preparation method and application thereof. The preparation method comprises the following steps: treating the surface of micron silicon by adopting an oxidant solution to form a silicon dioxide passivation layer, and then carrying out surface modification by using a silane coupling agent; the method comprises the following steps: performing acid-base alternate soaking treatment on a biomass carbon source to reduce the content of metal impurities; mixing the delimed biomass carbon source, the composite carbon source and the pretreated micron silicon, firstly adding a weak acid catalyst for hydrothermal reaction to form a hard carbon inner layer, then adding a weak base catalyst for regulating the pH value of the system to alkalescence in batches, and continuing hydrothermal reaction to form a soft carbon outer layer; and washing and drying the product, and carrying out carbonization treatment in an inert atmosphere to obtain the composite coated micron silicon material. The first efficiency of the material is greater than or equal to 92%, the 1C 1000-time circulation capacity retention ratio is greater than or equal to 82%, the raw material cost is low, the process is simple, and the material is suitable for lithium ion batteries in the fields of power, energy storage and consumer electronics.

The invention relates to the technical field of adhesives, and provides a high-thermal-conductivity modified silane polyether adhesive and a preparation method thereof.The silane-terminated polyether sealant is prepared from silane modified polyether resin, modified filler, a flame retardant, a silane coupling agent, a catalyst, an antioxidant and a water removal agent; the modified filler is obtained by grafting a hydroxylated AlN filler or a hydroxylated BN filler or a hydroxylated AlN and hydroxylated BN compound filler with silane under the catalysis of a weak acid to form a Si-O-Al or / and Si-O-B covalent bond network, and then mixing the Si-O-Al or / and Si-O-B covalent bond network with nano silicon dioxide particles of which the surfaces are coated with polydopamine. Through a multi-dimensional filler modification technology and reasonable matching of other auxiliaries, the problem of synergism of heat conduction, flame retardance and mechanical properties of the MS adhesive under a high filling system is solved, and the material is suitable for a new energy power battery module.

The invention belongs to the technical field of organic synthesis, and relates to a preparation method of 5, 5-dimethyl-4, 5-dihydroisoxazole. The method comprises the following steps: (1) reacting isopentenal with an oximation agent to obtain a reaction solution containing isopentenal oxime; (2) dropwise adding the reaction liquid into a mixture containing isopentenal and an acid catalyst for reaction to obtain a product; or when the reaction liquid contains water, performing phase splitting on the reaction liquid to obtain an organic phase, and dropwise adding the organic phase into a mixture containing the isopentenal and the acid catalyst for reaction to obtain a product. The method does not produce ketone by-products, and is good in atom economy, high in reaction yield, good in technological process continuity, low in cost, few in materials, simple to operate, mild in reaction condition, low in requirements on production equipment and suitable for large-scale industrial production.

The invention discloses a preparation method of a sulfonic acid type covalent organic framework material and a preparation method of 5-hydroxymethylfurfural. The material is prepared by carrying out covalent condensation reaction on a monomer containing a sulfonic acid group precursor and a connecting ligand of a skeleton through a hot solvent method, and the catalyst has the characteristics of high crystallinity, large specific surface area, ordered pore structure, high sulfonic acid group density and uniform distribution. The preparation method is simple, convenient, efficient, mild in condition and high in yield. Compared with a traditional lewis acid catalyst for preparing 5-hydroxymethylfurfural through fructose dehydration, the material has the advantages of being uniform and adjustable in porosity, higher in active site, capable of promoting fructose hydrolysis and the like, efficient conversion can be achieved, side reactions and product transition polymerization are inhibited, and better industrialization prospects are shown.

The invention provides a solid acid catalyst and application thereof in esterification reaction of polyethoxy dihydric alcohol and acrylic acid, and relates to the technical field of preparation of polyethylene glycol diacrylate. The solid acid catalyst is a UIO-66-SO3H catalyst based on a UIO-66 framework, the catalyst is prepared from ZrCl4, formic acid, terephthalic acid and 2-sulfonic acid terephthalic acid through a reaction, the catalyst can catalyze an esterification reaction of polyethyoxyl dihydric alcohol and acrylic acid under the solvent-free condition, a subsequent desolventizing step is avoided, energy consumption is reduced, and the method is suitable for industrial production. And the prepared polyethoxy glycol diacrylate product is colorless and transparent in color, high in purity, low in polymerization degree, moderate in viscosity and wider in application space.

The invention relates to the technical field of catalysis, and particularly discloses a method for preparing pure biodiesel from kitchen waste oil through enzyme catalytic desulfurization. The method comprises the following steps: adding a Sm2O3 / ZrO2 solid acid catalyst into the kitchen waste oil for pretreatment to obtain pretreated waste oil, and then adding lipase into the pretreated waste oil for catalyzing transesterification to obtain the biodiesel. According to the method for preparing the pure biodiesel from the kitchen waste oil through enzyme catalytic desulfurization, in-situ esterification and synchronous desulfurization of free fatty acid can be completed in a single-step reaction, the stability of a conversion reaction is effectively improved, the production process is simplified, and the conversion efficiency of preparing the biodiesel from the kitchen waste oil is improved.

The invention discloses a ketoazine-based polymer, an anion exchange membrane and a preparation method and application of the ketoazine-based polymer and the anion exchange membrane. A first linking group and a second linking group are mixed and then mixed with an aryl monomer A in an aprotic solvent of halogen atoms; slowly adding a super acid mixture; performing polymerization reaction in an environment of-5 to 3 DEG C to obtain a reaction solution; pouring the reaction liquid into a first mixed solvent to obtain PAAz; carrying out primary quaternization reaction on PAAz through carbonate, bicarbonate or hydroxide salt of alkali metal, and adding an organic base catalyst to assist the primary quaternization reaction; in the first quaternization reaction, a quaternization reagent is added; and pouring into a second mixed solvent, and precipitating to obtain purified PAAz. Under the condition of super acid catalysis, two or more alicyclic amine derivatives containing ketone groups react with one or more aromatic fused rings to generate a polymer containing secondary or tertiary amine. And carrying out quaternization treatment to finally form the cationic polymer.

The invention relates to a new and improved process for making an epoxidized olefin, specifically, polyisobutylene epoxide. The inventive process generally comprises (a) combining a polyisobutylene and a solvent to form a first mixture, (b) combining a peroxide, a carboxylic acid and an acid catalyst to form a second mixture, (c) reacting the first and second mixtures forming a non-aqueous phase comprising a polyisobutylene epoxide and an aqueous phase; (d) separating the non-aqueous phase from the aqueous phase; (d) washing and neutralizing the non-aqueous phase, and (e) recovering in a high yield and high purity polyisobutylene epoxide. It was discovered that specific mole ratios and amounts of reactants provide for recovering in high yield and purity polyisobutylene epoxide with reduced detrimental by-products.

The invention relates to the technical field of coatings, and discloses a modified aerogel, a preparation method thereof and an application of the modified aerogel in a radiation refrigeration coating. The method comprises the following steps: in the presence of water, a solubilizer and an acid catalyst, carrying out hydrolysis reaction on a silicon source to obtain silica sol; in the presence of a base catalyst, contacting the silica sol with a rare earth oxide with a linear average particle size of 10-100 nm to carry out a gel reaction so as to obtain a modified wet gel; and drying the modified wet gel at normal pressure to obtain the modified aerogel, the adding amount of the rare earth oxide and the normal-pressure drying condition are controlled, so that the content of the rare earth oxide in the modified aerogel is 0.5-1 wt%. A coating prepared from the radiation refrigeration composition containing the modified aerogel prepared by the invention has the characteristics of high sunlight reflectivity, high atmospheric window emissivity and the like.

This invention relates to the field of oil and fat synthesis technology, specifically to a method for preparing nervonic acid monoglyceride. In this invention, nervonic acid and glycerol are used as raw materials, and an esterification reaction is carried out under microwave assistance to obtain a first mixture containing nervonic acid monoglyceride, nervonic acid diglyceride, nervonic acid triglyceride, unreacted nervonic acid and glycerol, and a catalyst. Glycerol and the catalyst are removed by ethyl acetate extraction to obtain a second mixture. Subsequently, taking advantage of the temperature-sensitive nature of nervonic acid monoglyceride in edible oils, it is separated and purified to obtain nervonic acid monoglyceride. The esterification reaction under microwave assistance not only avoids the corrosion and contamination problems caused by traditional acid catalysts, but also significantly shortens the esterification reaction time, improves synthesis efficiency, and effectively inhibits the isomerization of cis-nervonic acid during the reaction, ensuring the stability of the product configuration.

The invention provides a preparation method of ultra-low thermal conductivity silicon-based aerogel, and relates to the field of aerogel material preparation, and the preparation method comprises the following steps: S1, preparing a component A and a component B. The component A is prepared by fully mixing a silicon source, a modified silicon dioxide seed crystal, absolute ethyl alcohol and deionized water, then slowly adding an acid catalyst, and carrying out hydrolysis; the component B is a basic catalyst solution obtained by uniformly mixing deionized water and stronger ammonia water; step S2, gelling: fully mixing the component A and the component B to obtain wet gel, and then mixing the wet gel with a fiber felt to obtain a wet gel felt; step S3, aging; and S4, performing supercritical drying. According to the method, by introducing the modified silicon dioxide seed crystal, the thermal conductivity of a solid structure of the aerogel is effectively reduced, meanwhile, formation of macropores, communicating pores and the like is inhibited, and the performance of the aerogel is improved.

The present application relates to fluorescent material technical field, especially based on benzopentacyclic / septacyclic structure's carbonyl nitrogen type fluorescent material and its preparation method, the present application provides the preparation method with carbazole as raw material, in the synthesis process, the aldehyde group precursor is directly oxidized to acid by using strong oxidant, then the intermediate is made to occur intramolecular Friedel-Crafts reaction by acid catalyst, finally the carbonyl / nitrogen type fluorescent material of inlaid non-benzene structure is synthesized.This structure inhibits molecular relaxation through multiple resonance effect, and then realizes narrow band emission characteristics.At the same time, the structure retains higher photoluminescence quantum yield.The carbonyl nitrogen type fluorescent material based on benzopentacyclic / septacyclic structure provided by the present application is different from the existing all benzene type polycyclic aromatic hydrocarbons, so as to effectively widen the molecular system of carbonyl / nitrogen type narrow band light emitting material.

The invention discloses a tinplate snap lid outer coating suitable for a strong alkali sterilization process, which comprises the following raw materials in percentage by weight: 40 to 60 percent of organic silicon modified polyester resin, 5 to 15 percent of amino resin, 5 to 15 percent of blocked isocyanate, 20 to 40 percent of solvent, 0.2 to 5.0 percent of wax powder, 0.01 to 0.5 percent of acid catalyst and 0.05 to 1.0 percent of defoaming agent. 0.5%-2.0% of an adhesion promoter, 0.01%-0.5% of a leveling agent; according to the organic silicon modified polyester resin, 2, 2, 4, 4-tetramethyl-1, 3-cyclobutanediol is introduced into polyester resin, and gamma-glycidyl ether oxypropyl trimethoxy silane is grafted into the polyester resin. The coating forms a protective coating on the surface of tinplate, has excellent mechanical properties, flexibility, machinability and water resistance, and can obviously improve the defects of the coating in high-temperature sterilization under a strong alkali condition.

The invention discloses a microwave-assisted biomass dissociation method and device, and belongs to the technical field of biomass pretreatment. The method is carried out in a microwave reaction device, and comprises the following steps: 1) respectively feeding a liquefying agent in a liquefying agent storage tank, an acid catalyst in a catalyst storage tank and a biomass raw material into a mixing tank, and stirring to obtain a mixture; and 2) feeding the mixture into a continuous microwave reactor for microwave heating reaction, enabling the reacted material to fall into a discharging screw from the tail of the furnace, and discharging the material out of the microwave reactor by the discharging screw and collecting the material. The belt type continuous microwave heating device is adopted, and the problems that a traditional microwave reaction kettle cannot achieve continuous production and is poor in heating uniformity are effectively solved. By arranging a plurality of microwave heating cavities, the microwave heating frequency is adjusted at different temperature sections of a reaction system, so that the system is heated by microwaves close to the relaxation frequency of the system at different temperature sections, and the microwave heating speed and the heating efficiency can be effectively improved.

Provided is a sacrificial composition. The sacrificial composition comprises a polymer (A) that undergoes acid-catalyzed decomposition, a compound (B) that generates an acid by heat, and a solvent (C), wherein the compound (B) that generates the acid by heat consists of a carboxylic acid and a base, and a content of the compound (B) is 1 to 60 parts by mass based on 100 parts by mass of the polymer (A). The sacrificial composition may exhibit at least one of properties as an advanced material or as a high performance material. The sacrificial composition may be used in the nanotechnology process to make semiconductor device / display device application, for example semiconductor chip, or a liquid crystal, quantum dot, OLED display fabricated on a substrate controlled by semiconductors.

The invention discloses a synthesis method of 4-bromo-3-(ethoxymethyl) benzoic acid, which comprises the following steps: (1) activating carboxyl of p-bromobenzoic acid serving as a raw material in the presence of an organic anhydride activator, and then performing chloromethylation reaction with paraformaldehyde in the presence of a chlorine-containing Lewis acid catalyst to obtain 4-bromo-3-(ethoxymethyl) benzoic acid; after the reaction is completed, carrying out post-treatment to obtain an intermediate 4-bromo-3-(chloromethyl) benzoic acid; and (2) carrying out nucleophilic substitution reaction on the intermediate obtained in the step (1) in ethanol under the action of inorganic alkali to prepare the target product 4-bromo-3-(ethoxymethyl) benzoic acid. According to the invention, through one-pot activation and chloromethylation of p-bromobenzoic acid, concise, efficient and highly economical synthesis from cheap raw materials to the sparsentan key intermediate is realized.

The invention belongs to the technical field of carboxylic ester preparation, and particularly relates to a preparation method of dioctyl terephthalate, which comprises the following steps: under the catalysis of acid, modifying mesoporous silica by using OTES and a carbazole silane solution to obtain modified silica; under the protection of inert atmosphere, uniformly mixing TBT and methylbenzene, adding absolute ethyl alcohol for reaction, adding modified silicon dioxide for dispersion, adding water-containing mixed liquid for reaction, and aging, filtering, washing and drying to obtain the titanium-based catalyst. The preparation method comprises the following steps: uniformly mixing PTA, 2-ethylhexanol and a titanium-based catalyst, carrying out heating reaction, filtering, and carrying out reduced pressure distillation to obtain the dioctyl terephthalate. The method can inhibit hydrolysis failure of a titanium active center in the catalytic esterification reaction process, and improves the yield and purity of dioctyl terephthalate.

The invention relates to a catalytic hydrolysis method of waste epoxy resin, which comprises the following steps: putting the waste epoxy resin into a reaction kettle, adding ultrapure water, adding a small amount of sodium dodecyl diphenyl ether disulfonate surfactant and a boron trifluoride acetic acid catalyst, and carrying out hydrolysis reaction to realize catalytic degradation of the epoxy resin. Degradation products can be converted into epoxy monomers and anhydride monomers, so that cyclic utilization is realized. Compared with the prior art, the degradation method provided by the invention is not only green and safe, but also high in degradation efficiency, solves the problem that the waste epoxy resin cannot be recycled, saves resources, meets the green development requirement, and has practical engineering application value.

This invention belongs to the field of catalyst technology, specifically relating to a solid acid catalyst, its preparation method, and its application. The invention provides a method for preparing a solid acid catalyst, comprising the following steps: mixing a dichlorohydrin solution, N-methylpyrrolidone, and silica sol, and sequentially aging and calcining them to obtain a ZrO2-SiO2 support; mixing the ZrO2-SiO2 support with a sulfuric acid solution, and sequentially impregnating and calcining them to obtain the solid acid catalyst. The preparation method provided by this invention, through a sequential sol-gel method and sulfuric acid solution impregnation, prepares SO4 with uniform size and dispersion. 2‑ The ZrO2-SiO2 solid acid catalyst has widely available and low-cost raw materials, and its preparation process is safe and easy to control, allowing for large-scale production. Furthermore, the obtained solid acid catalyst exhibits excellent performance in treating tail gas from acetylenic diol production, making it suitable for the industrial production of acetylenic diol.

The invention discloses special-shaped zinc powder for a waterborne epoxy anticorrosive primer and a preparation method and application thereof in the technical field of chemical engineering, spherical zinc powder is used as a raw material, an irregular shape is obtained through ball milling treatment, meanwhile, modified coating liquid is adopted for coating modification, and a protective layer is formed on the surface of the irregular shape, so that the special-shaped zinc powder is obtained; the modified film coating liquid is obtained by taking a silane oligomer containing an epoxy group as a raw material, firstly preparing sol through an acid catalysis sol-gel method, and then adding cerium salt and a passivating agent into the sol. The special-shaped zinc powder provided by the invention is moderate in cost, good in corrosion resistance, high in storage stability and strong in adhesive force in a paint film, in addition, the special-shaped zinc powder can be directly added into a water-based paint system during production, high-speed secondary stirring and dispersion at a construction site are not needed, and the construction efficiency is high.

The invention discloses a membrane electrode assembly and a preparation method and application thereof, and belongs to the technical field of new energy materials. According to the present invention, by using the super acid catalysis polymerization reaction, the piperidone and the different aromatic monomer compounds are synthesized into the aromatic polymer with the main chain not containing the ether bond and other unstable groups, such that the aromatic polymer can be simultaneously adopted as the diaphragm and the ionomer material; the membrane electrode can be applied to a methanol electrocatalytic oxidation coupling hydrogen production electrolytic tank and an alkaline water electrolytic tank. Through uniform compounding of the ionomer and the catalyst, non-uniform covering of the ionomer on the surfaces of catalyst particles is inhibited, the utilization rate of the catalyst is increased, and the catalyst layer and the diaphragm have good compatibility. The membrane electrode prepared by the method is stable in structure and low in cost, and has a good industrial application prospect.

The invention belongs to the technical field of tert-butylamine preparation, and particularly relates to a preparation process for synthesizing tert-butylamine by adopting methyl tert-butyl ether. The preparation process comprises the following steps: preparing calcium alginate microspheres; preparing an SAPO precursor solution; performing composite crystallization; preparing an SAPO-11 carrier; preparing an ammonium type SAPO-11 carrier; preparing a metal supported catalyst; preparing an activated catalyst; methyl tert-butyl ether and liquid ammonia are used as raw materials, and tert-butylamine is prepared under the catalysis of an activated catalyst. According to the preparation process for synthesizing the tert-butylamine by adopting the methyl tert-butyl ether, the process of catalytically synthesizing the tert-butylamine by taking the methyl tert-butyl ether and the ammonia as raw materials follows an acid catalytic cracking nucleophilic addition coupling mechanism, and the prepared hierarchical pore CuZn / HSAPO11 catalyst remarkably reduces the reaction activation energy through the synergistic effect of B acid, L acid and metal active sites; high-activity and high-selectivity catalytic conversion at low temperature is realized, and high-purity tert-butylamine is prepared.

The application relates to the technical field of biomass utilization, and relates to a continuous preparation technology of furfural from corncob, which comprises the following steps: S1: corncob is crushed into powder, then is mixed with sulfur trioxide, and is subjected to steam explosion under steam pressure; S2: acid catalysis-extraction reaction; S3: the once-extracted phase is subjected to solid-liquid separation, the liquid phase is subjected to secondary extraction by using an extracting agent, and a secondary extraction phase is obtained; S4: the once-extracted phase and the secondary extraction phase are combined and are sent into a rectifying tower for rectification, and furfural with a purity greater than 99% is obtained. The application has the beneficial effects that: 1. after the corncob is crushed, the corncob is mixed with sulfur trioxide and is subjected to steam explosion, hemicellulose can be effectively stripped from lignin, the subsequent reaction of preparing furfural from hemicellulose by acid catalysis can be more easily carried out, and the yield is higher; 2. in the method, acetic acid and aluminum chloride are used as mixed acid catalysts, the reaction temperature is reduced by 20-40 DEG C compared with one-pot method, and the reaction pressure is reduced by 0.4-0.7 MPa.G compared with one-pot method, so that the requirement of the reaction on equipment is reduced.

The invention relates to the field of lily pyran production, and discloses a method for obtaining lily pyran by acidifying and hydrolyzing a rectification backing material, which comprises the following steps: S1, raw material proportioning and reaction starting: respectively pumping the lily pyran rectification backing material and an acid catalyst solution into a microreactor from two feeding channels according to a mass ratio of 1.0: (0.7-1.0); s2, continuous feeding: in the process of pumping the valley pyran rectification base material and the acid catalyst solution in the step S1 into the microreactor along two feeding channels, respectively controlling the feeding speeds, and mixing in the microreactor to obtain a mixture; according to the method, available components such as uncyclized precursors and oligomers in the rectified backing material are directionally converted through an acidification hydrolysis process, the backing material treated as hazardous waste in a traditional process is converted into a convallaria majalis pyrane finished product, the total utilization rate of raw materials is remarkably increased, and thousands of tons of resource waste is reduced every year; meanwhile, the hazardous waste incineration or landfill cost is saved, and the economic burden is further reduced.

This invention discloses a high-temperature resistant, low-growth, medium-to-low adhesion silicone pressure-sensitive adhesive, its preparation method, and its application. The silicone pressure-sensitive adhesive comprises the following components by weight: 25-30 parts of high-hydroxymethyl MQ silicone resin, 15-20 parts of hydroxyl-terminated polydimethylsiloxane, 1-5 parts of hydroxyl-terminated polydimethylsiloxane, 1-5 parts of vinylmethyl MQ silicone resin, 10-20 parts of vinyl-terminated polydimethylsiloxane, 30-40 parts of solvent, 0.02-0.08 parts of acid catalyst, and 0.2-0.5 parts of inhibitor. The silicone pressure-sensitive adhesive provided by this invention has high cohesive strength and low adhesion creep during high-temperature baking, enabling protection during the high-temperature baking process of glass. It achieves no white haze precipitation, no adhesive residue, and easy peeling after high-temperature baking.

The application discloses a preparation method of silica with controllable particle size and morphology, and comprises the following steps: 1) mother liquor preparation: uniformly mixing an organic solvent, an alkali catalyst, an acid catalyst and water; 2) B liquid preparation: mixing alkoxy silane and the organic solvent, and stirring for a period of time; 3) particle nucleation: using a peristaltic pump to immerse a feed redistributor into the mother liquor, adding the B liquid into the mother liquor, and performing a silica particle nucleation reaction to obtain a seed solution; 4) particle regrowth: adding water and the alkali catalyst into the seed solution obtained in the step 3) and uniformly stirring; continuously adding the mixed solution of the alkoxy silane and the organic solvent into the seed solution by using the feed redistributor, and performing particle regrowth under stirring; 5) concentration and filtration: performing heating concentration on the sample, removing the organic solvent in the sample, and removing large particles in the sample by filtration. The application can finally control the particle size and morphology of the silica sol by effectively regulating the discharging mode and feeding position of the feed redistributor, and regulating the redistribution state of the feeding liquid in the mother liquor.