388 results about "Glyceryl Ethers" patented technology

The invention relates to a poly-(2-oxazoline) epoxy derivative and application thereof, and belongs to the technical field of crosslinking. The invention provides a poly-(2-oxazoline) epoxy derivative, which is completely different from existing cross-linking agents such as 1, 4-butanediol diglycidyl ether (BDDE), divinyl sulfone, glycidyl methacrylate and the like in structure, and has the advantages that the structure is simple; the polymer can be used as a cross-linking agent for cross-linking natural high-molecular polymers such as polysaccharide (such as hyaluronic acid) and protein and synthetic high-molecular polymers such as polyethylene glycol and polyvinyl alcohol. Compared with an existing cross-linking agent, the poly-(2-oxazoline) epoxy derivative has the advantages that the poly-(2-oxazoline) epoxy derivative can be easily subjected to a cross-linking reaction with high-molecular polymers such as hyaluronic acid, the prepared cross-linked substances such as sodium hyaluronate gel are more stable and uniform, the performance of the prepared cross-linked substances is easier to regulate and control and the like, and the poly-(2-oxazoline) epoxy derivative has a great application prospect.

The invention relates to the technical field of ink, and discloses a preparation method of bio-based degradable water-based ink, which comprises the following steps: carrying out esterification polymerization on vanillin-based spiro acetal diglycidyl ether and diacid to obtain bio-based polyester resin, mixing and dispersing the bio-based polyester resin, petroleum-based resin, pigment, auxiliary agent and the like to obtain the bio-based degradable water-based ink. The bio-based degradable water-based ink is prepared. The bio-based resin contains a plurality of hydrophilic hydroxyl groups, has good solubility and dispersibility in the water-based ink, and generates denser hydrogen bonds and other cross-linking effects with the acrylic resin, so that the hardness of the ink is improved. Meanwhile, the polar hydroxyl groups also greatly enhance the hydrogen bond bonding and anchoring effect between the paint film and the base material, so that the adhesive force is improved. In addition, easily-hydrolyzed spiral acetal bonds, polyester structural units and other degradable chemical bonds in molecular chains of the bio-based resin provide more attack sites for water and microorganisms, the degradation rate is increased, and the degradable function is achieved.

The invention provides light-cured epoxy ink and a preparation method and application thereof, the light-cured epoxy ink comprises an alicyclic epoxy monomer, an oxetane monomer, a diluent, a photoinitiator, an adhesion promoter and an assistant, the alicyclic epoxy monomer is an alicyclic epoxy monomer containing more than two polycyclic rings in a molecule; and the adhesion promoter is glycidyl ether epoxy micromolecules containing hydroxyl groups. According to the epoxy ink composition disclosed by the invention, the rigid group alicyclic ring and the adhesion promoter with hydroxyl are introduced, so that the epoxy ink composition has high adhesion and film surface hardness at the same time. The light-cured printing ink provided by the invention has low viscosity and high light transmittance. The liquid crystal composition is suitable for the field of display panels such as OLEDs, Micro-LEDs and the like, and the ink-jet printing technology is met.

The invention discloses a high-temperature-resistant and weather-resistant epoxy resin adhesive and a preparation method thereof, and belongs to the field of epoxy resin adhesives, the adhesive can keep stable bonding strength for a long time at high temperature through the synergistic effect of hydrogenated bisphenol F type epoxy resin, silicon-containing phenyl glycidyl ether epoxy resin and a dicyandiamide-imidazole composite curing agent, and the adhesive has high temperature resistance and weather resistance. According to the present invention, the graphene aerogel is added to the silicon-containing phenyl glycidyl ether epoxy resin to meet the high temperature environment use requirement, and the silica bond in the silicon-containing phenyl glycidyl ether epoxy resin and the aging resistance of the graphene aerogel enable the adhesive to have characteristics of excellent ultraviolet aging resistance, excellent thermal cycling resistance and excellent moisture resistance, solve the performance defects of the traditional product, and be suitable for the application in the high temperature and severe environment, the method has an important practical value.

The invention relates to the technical field of agricultural fertilizers, in particular to an organic-inorganic composite silicon-calcium-magnesium fertilizer and a preparation method and application of the organic-inorganic composite silicon-calcium-magnesium fertilizer. The high-temperature activated silicon-calcium-magnesium mineral powder is composed of calcined wollastonite powder, calcined serpentine powder, dolomite powder and zeolite powder; 2%-5% of an organosilane modifier, wherein the organosilane modifier is composed of gamma-aminopropyl triethoxy silane and gamma-glycidyl ether oxypropyl trimethoxy silane, and the organic silane modifier is composed of gamma-aminopropyl triethoxy silane and gamma-glycidyl ether oxypropyl trimethoxy silane; 18%-35% of a functional organic matter complex, wherein the functional organic matter complex is composed of mineral source sodium humate, bioactive small peptide, sodium alginate and polyglutamic acid; and 3%-8% of auxiliary functional components, so that the solubility and the bioavailability of silicon, calcium and magnesium elements in minerals are remarkably improved.

The invention belongs to the technical field of polymer environment-friendly materials, and particularly relates to a PHA composite antibacterial material for food and tableware and a preparation method of the PHA composite antibacterial material. The composite material is prepared from the following components in parts by weight: 60 to 70 parts of PHA (Polyhydroxyalkanoate) base material, 20 to 24 parts of PLA (Polylactic Acid) base material, 3 to 4 parts of oligomeric D-lactic acid, 2 to 2.5 parts of ZnO-coated CNC (Computer Numerical Control) antibacterial particles, 4.5 to 5.5 parts of needle-like wollastonite powder, 3.5 to 5 parts of silane modified montmorillonite, 0.05 to 0.1 part of talcum powder, 0.3 to 0.4 part of rosemary extract, 0.6 to 0.9 part of chain extender, 0.4 to 0.5 part of D-sorbitol diglycidyl ether, 0.35 to 0.45 part of glyceryl monostearate and 0.3 to 0.4 part of antioxidant. The PHA base material is used for constructing a bearing framework, and the mechanical strength, the heat-resistant stability, the oil resistance and the long-acting antibacterial property are organically unified by combining the synergistic effect of multiple materials.

The invention relates to the technical field of fabrics, and discloses a cool antistatic comfortable fabric and a preparation method thereof.The cool antistatic comfortable fabric is obtained by reacting pentanebis (glycine), 1, 3-bis (3-glycidyl ether oxypropyl) tetramethyldisiloxane, epoxy chloropropane and the like to obtain an epoxy quaternization finishing agent and finishing a cotton fabric. The epoxy quaternization finishing agent contains a flexible siloxane structure, can improve the softness and wrinkle resistance of the cotton fabric, contains quaternary ammonium salt and carboxyl hydrophilic groups, enables the cotton fabric to keep good hydrophilicity and cool hand feeling, contains quaternary ammonium salt cations, can increase the conductivity of the surface of the cotton fabric, and improves the anti-wrinkle performance of the cotton fabric. The surface resistivity is reduced, so that the anti-static performance is improved, and the cotton fabric still keeps good soft anti-wrinkle performance and anti-static performance after being washed for multiple times.

The invention relates to a marine epoxy resin composite material. The marine epoxy resin composite material is characterized by comprising the following components in parts by mass: 100 parts of epoxy resin, 20-30 parts of a curing agent, 100-120 parts of a reinforcing material, 2050 parts of hollow microsphere filler and 5-15 parts of a flame retardant, the epoxy resin is one or a mixture of two of bisphenol A type epoxy resin, bisphenol F type epoxy resin, polyphenol type glycidyl ether epoxy resin or aliphatic glycidyl ether epoxy resin. When in use, the marine epoxy resin composite material disclosed by the invention has the advantages of excellent comprehensive performance, corrosion resistance, flame retardance, water resistance, high strength, light weight and the like, still has excellent performance retention rate after being soaked in water for several days, and is more suitable for complex and severe working conditions on a ship.

The invention provides modified polysiloxane and also provides a preparation method of the modified polysiloxane, and the preparation method comprises the following steps: mixing low-hydrogen-content silicone oil with allyl alcohol polyether and allyl glycidyl ether, heating, adding a catalyst, and carrying out an addition reaction to obtain the modified polysiloxane. The invention also provides an application of the modified polysiloxane as a soil loosening agent, and the modified polysiloxane is used for reducing the soil bulk density and / or increasing the soil porosity, and is also used for improving the water absorption and / or water retention of the soil. By applying the modified polysiloxane soil loosening agent disclosed by the invention, the soil bulk density is effectively reduced, the soil compactness is reduced, and the soil porosity is improved, so that the soil hardening is remarkably improved, the crop growth is promoted, and the modified polysiloxane soil loosening agent is green and safe and has important economic value and environmental significance.

The invention discloses a DA bond polymer with antibacterial and self-repairing functions for a wood surface as well as a preparation method and a use method of the DA bond polymer. Chitosan serves as a wall material, cinnamon essential oil serves as a core material, the cinnamon essential oil and chitosan antibacterial microcapsules are prepared through emulsification, crosslinking and spray drying, and essential oil controlled release is achieved. Then bisphenol A diglycidyl ether DGEBA and furfuryl alcohol FA are used as raw materials, furyl functional epoxy resin FER is prepared under the catalysis of triethylamine TEA, bismaleimide BMI is added, and a DA bond self-repairing polymer is prepared through a DA reaction; and adding 4, 4-diaminodiphenylmethane DDM into the system, reacting with redundant DGEBA to generate a cross-linked polymer network, and adding the microcapsules into a DA bond semi-interpenetrating self-repairing network solution to obtain the DA bond polymer. A thin film formed by brushing and curing wood has antibacterial and self-repairing functions, scratches and microcracks on the surface of the wood can be repaired, and microbial erosion is inhibited.

A photoelectric composite cable for an underwater buoy, and a preparation process therefor. A polyurethane, a self-repairing polyurethane prepolymer, and a composite nano zinc oxide are selected as an outer sheath base material. A modified polysiloxane having a B-O six-membered ring dynamic cross-linked network and a long-chain alkane group and an amino is introduced into the self-repairing polyurethane prepolymer; 5,5'-methylenedisalicylaldehyde and isophorone diisocyanate are together subjected to stepwise polymerization with the modified polysiloxane, and the 5,5'-methylenedisalicylaldehyde is cross-linked with diphenylmethane diisocyanate to obtain a self-repairing polyurethane prepolymer; and nano zinc oxide is subjected to a modification treatment, wherein dodecyltrimethoxysilane and 3-glycidoxypropyltrimethoxysilane are used for dual modification, such that super-hydrophobic nano zinc oxide having good thermal stability and high dispersity is prepared in a toluene system.

The invention discloses a single-component high-heat-resistance type epoxy adhesive and a preparation method of the single-component high-heat-resistance type epoxy adhesive. The adhesive is prepared from the following components in parts by weight: 30 to 40 parts of N, N-4, 4 '-diphenylmethane bismaleimide; 50 parts of bisphenol F epoxy resin; 36.47 parts of 4, 4 '-diaminodiphenyl sulfone; 20 to 40 phr of phenyl glycidyl ether; 1 to 2 phr of two terminal type epoxy silicone oil; 4 to 6 phr of hydroxyl-terminated polyether sulfone; 10 to 20 phr of boron nitride, the surface of which is modified by gamma-glycidyl ether oxypropyl trimethoxy silane; and 1 to 3 phr of an adhesion promoter. According to the adhesive disclosed by the invention, the heat resistance, the mechanical property, the dimensional stability, the process adaptability and the like are synergistically improved, the use requirements of an aviation structural part on long-term service at 150-180 DEG C and an electronic packaging device on the condition of short-time reflow soldering at about 200 DEG C can be met, and the reliability of the adhesive in a high-temperature environment is remarkably improved.

The invention belongs to the technical field of ultra-thin glass, and particularly relates to a folding screen protector and a preparation process thereof. The folding screen protector sequentially comprises a functional base film layer, a thermosetting resin film layer, a UTG layer, a thermosetting resin film layer and an OCA adhesive film layer from top to bottom. A layer of photocureable coating added with modified silicon dioxide and methallyl polyhedral oligomeric silsesquioxane is sprayed on PET resin to serve as a functional base film, and a rigid phenyl group is introduced into a molecular structure of a thermosetting resin film; according to the invention, methyltrimethoxysilane, phenyltrimethoxysilane and 3-glycidyl ether oxypropyl trimethoxysilane are adopted as monomers for co-polymerization to obtain high-transparency polysiloxane as an OCA adhesive, so that the bending performance and the impact resistance of the folding screen protector are effectively improved.

The invention discloses a plugging agent for oil-based drilling fluid, and relates to the technical field of plugging agents. The plugging agent comprises a rigid material, pre-gelatinized cassava starch, inorganic fibers, gel particles and base oil, and preparation raw materials of the gel particles comprise allyl glycidyl ether, alkyl primary amine, short-chain acrylate, long-chain acrylate, styrene and unsaturated silane. According to the blocking agent for the oil-based drilling fluid, by arranging the rigid material, the pre-gelatinized cassava starch, the inorganic fibers and the gel particles, microcracks of a shale reservoir can be effectively blocked, and the blocking effect is good.

The invention discloses a peracetylated polysaccharide derivative mixing accelerator as well as a preparation method and application thereof, and relates to the technical field of polysaccharide derivatives. Alkyl polyglucoside and glycidyl ether are subjected to etherification reaction to obtain polysaccharide derivatives; and adding acetic anhydride and an organic weak base catalyst into the polysaccharide derivative, and carrying out esterification reaction to obtain the peracetylated polysaccharide derivative. The obtained peracetylated polysaccharide derivative can be used for reducing the minimum miscible pressure of CO2 in an offshore oilfield. The polysaccharide derivative provided by the invention is simple in synthesis process, and the molecular activity of the polysaccharide derivative can be regulated and controlled by changing the number of carbon dioxide-philic groups and the length of oleophylic unsaturated hydrocarbon chains, so that the polysaccharide derivative can be used in the CO2 oil displacement process of oilfield exploitation, and the minimum miscible pressure in the CO2 oil displacement process is effectively reduced.

The present invention provides an epoxy resin adhesive and a preparation method thereof, and relates to the technical field of building structure adhesives, the epoxy resin adhesive is prepared from a component A and a component B, the component A comprises the following raw materials by weight: 90-110 parts of epoxy resin, 15-25 parts of a toughening agent, 40-50 parts of a filler I and 15-20 parts of benzyl alcohol, and the toughening agent comprises polycarbonate, polyamide and polypropylene glycol diglycidyl ether; the component B is prepared from the following raw materials in parts by weight: 40 to 60 parts of curing agent, 10 to 20 parts of filler II, 1.5 to 3 parts of polyvinylpyrrolidone and 5 to 10 parts of benzyl alcohol. The preparation method comprises the following steps: S1, preparing A glue; s2, preparing B glue; and S3, mixing glue. The toughening agent is added in the component A, polycarbonate, polyamide and polypropylene glycol diglycidyl ether are selected as the toughening agent, the three raw materials are compounded and cooperated, the processability and flowing property of the epoxy resin adhesive can be effectively improved, and the problems that a cured finished product is high in brittleness and poor in impact resistance are solved.

The present invention discloses a monodisperse lignin colloidal sphere, a preparation method, and an application as a structural color material. The method comprises the following steps: first, lignin is steamed under alkaline conditions, and then ultrafiltration is performed to remove low-molecular-weight and high-molecular-weight lignin to obtain a uniform medium-molecular-weight lignin, which is then reacted with a glycidyl ether compound to further regulate polar groups such as hydroxyl groups, and then short-chain alcohols are used to separate alcohol-insoluble lignin. The alcohol-insoluble lignin is dissolved in an organic solvent-water mixed solvent, water is added dropwise to cause phase separation, and finally, centrifugal sedimentation is performed to obtain monodisperse lignin colloidal spheres. The preparation process of the method of the present invention is green and environmentally friendly, the organic solvents used can be recycled and reused, and the product yield reaches more than 70%. The obtained monodisperse lignin colloidal spheres can be used as a structural color material.

The invention discloses fluorine-containing bio-based epoxy resin as well as a preparation method and application thereof, and relates to the technical field of high polymer materials. The preparation method of the fluorine-containing bio-based epoxy resin comprises the following steps: enabling octafluoropentyloxy glycidyl ether as a fluorine unit to react with dihydric alcohol to obtain fluorine-terminated side chain butanediol, enabling the fluorine-terminated side chain butanediol to react with isocyanate to obtain a polyurethane prepolymer, and performing boric acid end capping on the polyurethane prepolymer by using 3-aminophenylboronic acid to obtain the fluorine-containing bio-based epoxy resin. The fluorine-containing bio-based epoxy resin (FBPU-ER) is prepared by the following steps: adding fluorine-containing polyurethane resin and phenylboronic acid into epoxidized soybean oil to obtain phenylboronic acid modified fluorine-containing polyurethane resin (FBPU), carrying out boric acid treatment on the epoxidized soybean oil by using 3-aminophenylboronic acid to obtain phenylboronic acid modified epoxy resin (BER), and finally, mixing the phenylboronic acid modified fluorine-containing polyurethane resin and the phenylboronic acid modified epoxy resin to obtain the fluorine-containing bio-based epoxy resin (FBPU-ER). The fluorine-containing bio-based epoxy resin prepared through fluorine-containing modification and toughening design has good mechanical properties, stability and self-repairing performance.

The invention provides a cationic waterborne epoxy hardener without containing free amine and a preparation method thereof, and relates to the technical field of epoxy hardeners, the method comprises the following steps: 1) mixing small molecular aldehyde and hydroxyethyl diethylenetriamine for reaction to obtain oxazolidine and aldimine terminated modified amine; (2) carrying out reaction on the modified amine and polyfunctional epoxy resin to obtain modified oxazolidine and aldimine-terminated modified resin amine; 3) mixing the modified oxazolidine and aldimine terminated modified resin amine, monofunctional glycidyl ether and water for reaction to obtain terminated modified resin amine; and 4) adding small molecular acid to neutralize the terminated modified amine, and transferring water to obtain the cationic waterborne epoxy curing agent without free amine. The paint film can be endowed with excellent boiling water resistance, acid and alkali resistance, neutral salt mist resistance and the like, the preparation process is simple, the production cost is low, and the paint is suitable for large-scale industrial application.

The invention discloses a hyperbranched polyether branching agent with an adjustable structure and a preparation method and application thereof.According to the branching agent, 3-butene-1-alcohol serves as an initiator, a hyperbranched skeleton is constructed through anion ring-opening polymerization reaction and diglycidyl ether, then esterification and end capping are conducted through anhydride, and the hyperbranched polyether branching agent with the adjustable structure is obtained. The tail end of the hyperbranched polyether contains vinyl double bonds, and the ester group structure of the hyperbranched polyether can be regulated and controlled. Different diepoxy compounds are selected to control a main chain structure, and different anhydrides are used for regulating and controlling the chemical composition of branched chains, so that accurate design of molecular weight, polarity and number of functional groups of the branching agent is realized. The branching agent has excellent dissolvability in common organic solvents, and solves the problem of poor dissolvability of the traditional polydiene branching agent. When the star-shaped branched butyl rubber is applied to the synthesis of star-shaped branched butyl rubber, the distribution and number of branched points can be accurately regulated and controlled, the weight-average molecular weight and molecular weight distribution index of the rubber are remarkably improved, and the side reaction of gel is avoided.

The single-component photo-thermal dual-curing epoxy resin three-proofing coating comprises the following raw materials in parts by mass: 100 parts of acrylic acid / organic silicon dual-modified epoxy resin, 8-25 parts of a diluent, 6-18 parts of an epoxy curing agent and 1-6 parts of a photoinitiator, the diluent is an acrylic acid glycidyl ether compound; the photoinitiator is an epoxy alkyl anthracene ether compound. The three-proofing coating disclosed by the invention has excellent adhesive force on a PCB (Printed Circuit Board), and has the characteristics of photo-initiation rapid curing and high toughness; the problem of molecular migration of the photoinitiator in the coating is avoided, and the weather resistance of the three-proofing coating is obviously improved.

The invention discloses a temperature-resistant and salt-resistant tackifier and a preparation method thereof, and relates to the technical field of fracturing fluids. The preparation method of the temperature-resistant and salt-resistant tackifier comprises the following steps: taking a first monomer and diethanol amine to carry out epoxy ring-opening reaction, and after the reaction is finished, separating and purifying to obtain an intermediate; taking the intermediate, adding a quaternization reagent for quaternization reaction, and then separating and purifying to obtain an active monomer; the first monomer is one of allyl alcohol glycidyl ether, acrylic acid glycidyl ether and methacrylic acid glycidyl ether, and the quaternization reagent is one of halogenated carboxylate or halogenated sulfonate; the preparation method comprises the following steps: dissolving acrylamide, an active monomer and unsaturated phosphate, and carrying out free radical polymerization under the action of an initiator. The tackifier provided by the invention has good temperature-resistant and salt-resistant effects, and can tolerate salt water with mineralization degree of 120,000 mg / L and high temperature of 150 DEG C.

The invention relates to the technical field of sound insulation materials, in particular to flame-retardant epoxy resin composite diatomite sound insulation cotton and a preparation method thereof. The flame-retardant epoxy resin composite diatomite sound insulation cotton is prepared from epoxy resin, diatomite, a composite flame retardant, a coupling agent, a curing agent, a diluent, a foaming agent and a charring agent. The composite flame retardant at least comprises ammonium polyphosphate and melamine; the coupling agent is a silane coupling agent or a titanate coupling agent; the curing agent is methyl tetrahydrophthalic anhydride; the diluent is n-butyl glycidyl ether; the foaming agent is azodicarbonamide; the charring agent is pentaerythritol. By optimizing the diatomite modification process and combining physical dispersion and chemical modification means, the compatibility of the diatomite and the epoxy resin is greatly improved, the pain point of filler agglomeration in the traditional process is thoroughly solved, the porous sound insulation potential of the diatomite is fully released, and the sound absorption and sound insulation performance of the material is qualitatively improved.

The invention relates to low-viscosity high-strength two-component epoxy winding resin and a preparation method and application thereof, the resin comprises a component A and a component B, and the mass ratio of the component A to the component B is 100: (80-110); the component A consists of the following raw materials in percentage by mass: 70-85% of modified epoxy resin, 14-20% of a functional reactive diluent and 1-10% of an impregnating compound; the modified epoxy resin is formed by compounding bisphenol A epoxy resin and polyether modified epoxy resin, and the functional active diluent is formed by compounding 1, 6-hexanediol diglycidyl ether and phenyl glycidyl ether; the component B is prepared from the following raw materials in percentage by mass: 85-96% of a composite anhydride curing agent, 2.5-10% of a high-efficiency accelerant and 1.5-5% of a defoaming agent; the composite anhydride curing agent is compounded by methyl tetrahydrophthalic anhydride and succinic anhydride, the efficient accelerant is compounded by imidazole and phosphine, and the defoaming agent is an organic silicon defoaming agent.

The invention provides a super wear-resistant polyurethane floor coating and a preparation method thereof, the super wear-resistant polyurethane floor coating comprises a component A, a component B and a component C. The component A comprises glycidyl ether compound modified polyisocyanate; the component B comprises a latent imine curing agent, a diluent, a functional auxiliary agent and a pigment filler; the component C comprises aggregate; the mass ratio of the component A to the component B to the component C is (4-6): (2-4): (1-3). By optimizing and modifying the components in the super wear-resistant polyurethane coating, the properties such as high hardness, excellent wear resistance and the like of the super wear-resistant polyurethane finish paint are maintained; the interlayer adhesive force between the super-wear-resistant polyurethane floor finish paint material and various epoxy floating coatings can be obviously improved, and the construction matching property in a high-humidity environment and the wear resistance of a whole floor coating system are improved.

The invention discloses a preparation method and application of a dendritic block polyether surfactant, and relates to the technical field of polyether surfactants. The invention relates to a preparation method of a dendritic block polyether surfactant, which comprises the following steps: (1) mixing pentaerythritol, a glycidyl ether compound and a catalyst A, heating, stirring and mixing, and carrying out heat preservation reaction to obtain a reaction product; (2) adding a catalyst B into the reaction system in the step (1), adjusting the temperature of the system, introducing nitrogen to replace air in the reaction system, and carrying out aging reaction after feeding is finished; and heating, maintaining the pressure of the system at 0.25-0.3 MPa, adding ethylene oxide, and continuing the aging reaction after the feeding is finished, thereby obtaining the dendritic block polyether surfactant. According to the invention, epoxypropane, ethylene oxide and pentaerythritol are adopted to form a tree-shaped high-performance block polyether surfactant, so that the problems that the emamectin benzoate water suspending agent is easy to be subjected to Ostwald ripening during sanding, easy to separate out during heat storage, easy to grow and the like are solved.

The invention discloses a raw foil titanium composite anode plate and a preparation method thereof, and belongs to the technical field of electrolytic copper foils, vinyl cage-type nanospheres prepared by a sol-gel method and 1, 1, 3, 3-tetramethyldisiloxane-propyl glycidyl ether are subjected to hydrosilylation reaction to obtain epoxy cage-type nanospheres, and the epoxy cage-type nanospheres and 1, 1, 3, 3-tetramethyldisiloxane-propyl glycidyl ether are subjected to hydrosilylation reaction to obtain the raw foil titanium composite anode plate. The amino group on the surface of the chitosan / mesoporous silica core-shell powder is utilized to initiate ring opening of the epoxy group of the epoxy cage type nanosphere, so that the surface of the chitosan / mesoporous silica core-shell powder is uniformly coated with the epoxy cage type nanosphere, and the multi-layer core-shell micron carbon sphere is formed after calcination; the micron carbon spheres can disperse stress through the multi-layer core-shell structure of the micron carbon spheres, so that surface cracking of the anode caused by impact of high-flow electrolyte is avoided; the micron carbon spheres can form a micro convex structure on the surface of the pretreated foil rolled material, so that the surface roughness can be increased, the falling of an oxide layer is avoided, and the micron carbon spheres can obviously increase the conductivity of the titanium anode.

The invention relates to the technical field of ceramic materials, in particular to a preparation method of submillimeter zirconia microspheres. The preparation method comprises the following steps: adding an isobutylene-maleic anhydride copolymer, butyl glycidyl ether and ammonium citrate into water, then adjusting the pH value of the solution to be alkaline by using an alkaline solution, and adding a defoaming agent and yttria-stabilized zirconia powder to obtain a premixed solution; carrying out ball milling on the premixed liquid, and then carrying out vacuum bubble removal to obtain zirconium oxide slurry; injecting the zirconium oxide slurry into an oily medium to obtain a zirconium oxide ceramic microbead green body; cleaning the zirconia ceramic microbead green body, drying, carrying out gradient heating calcination, and carrying out autogenous grinding to obtain the submillimeter zirconia microbead; the gel microspheres can be formed only by adding three organic matters, and the gel microspheres are low in organic matter content and free of toxicity. The method disclosed by the invention is high in yield, simple to operate and low in cost, and the prepared zirconium oxide microbeads are uniform in particle size and have relatively high density and mechanical properties.

The invention relates to the technical field of adhesives, and particularly discloses an adhesive for repairing a glass fiber reinforced plastic pipeline and a preparation process. The invention relates to an adhesive for repairing a glass fiber reinforced plastic pipeline. The adhesive is prepared from the following raw materials: modified bisphenol A epoxy resin, a curing agent, a glass fiber reinforced filler, a silane coupling agent, phenyl glycidyl ether, hydroxyl-terminated nitrile rubber and an antioxidant 1076, the modified bisphenol A type epoxy resin is prepared by grafting and modifying bisphenol A type epoxy resin through amino-terminated polyether; the glass fiber reinforced filler is prepared from hydroxylated glass fibers and a graphene-carbon nanotube compound through covalent grafting. The adhesive can be used for emergency repair of glass fiber reinforced plastic pipelines, has the advantages of high low-temperature curing speed, high bonding strength and good durability, can effectively avoid cracking and leakage of repaired parts, and is adaptive to low-temperature and high-pressure complex repair working conditions. The preparation process is simple and convenient to operate and high in controllability, the adhesive with uniform performance can be stably prepared, and the repair efficiency and repair quality are guaranteed.

The invention discloses a halogen-free flame-retardant epoxy resin system composition and application, the epoxy resin system composition is composed of an epoxy resin part and a curing agent part, the epoxy resin part is composed of dihydroxydiphenylmethane glycidyl ether, 2, 2 '-[(1-methylethylene) bis (4, 1-phenylene formaldehyde)] dioxirane, 2, 2'-dihydroxydiphenylmethane glycidyl ether, 2, 2 '-[(1-methylethylene) bis (4, 1-phenylene formaldehyde)] dioxirane, 2, 2'-dihydroxydiphenylmethane, 2, 2 '-dihydroxydiphenylmethane, the halogen-free flame retardant is composed of hydroxyl-terminated polysiloxane modified bisphenol A glycidyl ether, an organophosphorus flame retardant, an active diluent and an auxiliary agent. And the curing agent part consists of an alicyclic amine curing agent, amine-terminated polyether and an accelerant. The epoxy resin system composition provided by the invention is low in mixing viscosity and strong in operability, a cured product has excellent toughness and heat resistance while ensuring that the flame retardant grade meets UL94V0, and the problems that a halogen-free flame-retardant system is poor in process operability, the performance of the cured product is reduced, halogen elements can release harmful gas at high temperature, and the service life of the cured product is prolonged can be effectively solved. And harm to human health and environment is caused.