355 results about "Glycidyl ethers" patented technology

The invention belongs to the technical field of recoverable epoxy resin, and relates to a degradable epoxy resin system material and application thereof, a body, a composite material and a recovery method thereof. The degradable epoxy resin system material comprises a first component and a second component, the first component comprises first epoxy resin and second epoxy resin, and the second component comprises a first curing agent, a second curing agent and an accelerant; the first epoxy resin is a mixture of one or more of glycidyl ether epoxy resin and glycidyl amine epoxy resin and accounts for 15-35% of the first component by mass, the second epoxy resin is selected from one or more of epoxy resin with the structure containing # imgabs0 #, and the second epoxy resin accounts for 60-80% of the first component by mass; the first curing agent is one or a mixture of more of alicyclic amines and accounts for 40%-60% of the second component by mass, the second curing agent is one or a mixture of more of polyether amines and accounts for 40%-60% of the second component by mass, and the accelerant accounts for 0.5%-3% of the second component by mass. The requirement for vacuum infusion of the wind power blade can be met.

The invention discloses a toughened epoxy resin and a curing method thereof, and relates to the technical field of epoxy resins, the toughened epoxy resin comprises the following components: 100 parts of an epoxy resin matrix, specifically a mixture of bisphenol A epoxy resin and alicyclic epoxy resin, 5-35 parts of a composite amine curing agent, and 5-20 parts of a nano toughening agent, in particular to core-shell rubber particles grafted with epoxy groups on the surfaces, the core layer of each core-shell rubber particle is cross-linked polybutadiene, the shell layer of each core-shell rubber particle is polymethyl methacrylate, 0.5-3 parts of an accelerant comprising a bi-component synergistic accelerant, 1-5 parts of an interface enhancer, and a mixture of gamma-glycidyl ether oxypropyl trimethoxy silane and a titanate coupling agent, a bisphenol A type epoxy resin and a specific proportion of alicyclic epoxy resin are combined to construct an epoxy resin matrix according to a mass ratio of 2: 1, the epoxy resin matrix is matched with a composite amine curing agent prepared by carrying out a special three-step reaction on long-chain polyether diamine, aromatic diamine and anhydride, and key parameters such as molecular weight, functionality and molar ratio of the components are accurately regulated and controlled.

The invention discloses a colorful acid and alkali resistant laser printing ink and a preparation method thereof. The printing ink is composed of the following components in parts by weight: 0 to 30 parts of butanone, 10 to 30 parts of isopropanol, 2 to 6 parts of curing agent, 10 to 15 parts of pigment, and 10 to 30 parts of glycidyl ether epoxy resin. The glycidyl ether epoxy resin is adopted to produce the printing ink, aliphatic polyamine is further chosen as the curing agent, the acid and alkali resistant performance of the printing ink is strengthened through optimizing the formula, thus the shortage that the colorful laser printing ink is lost when being mixed with acid and alkali is overcome, moreover, the color of the laser printing product is more abundant, and the patterns are more clear.

The invention relates to a degradable epoxy resin composite material with an adjustable curing speed, and a preparation method and a mild total recycling method thereof. Existing degradable epoxy resin has the problems of high cost, harsh degradation conditions and the like, and is difficult to meet the requirements of different application scenes on curing speed and temperature at the same time. The invention provides an epoxy resin composite material which comprises curing agent components (an epoxy resin amine curing agent and an ester-containing polythiol curing agent) and epoxy resin components (glycidyl ether epoxy resin, glycidyl amine epoxy resin and glycidyl ester epoxy resin). The cured composite material can be fully recycled through catalytic degradation under mild conditions by using a lewis acid and an amino group breaking ester bond mechanism, and the degradation product can be directly used as a curing agent, a toughening agent and a chain extender. The epoxy resin composite material disclosed by the invention not only has adjustable curing speed and high use performance, but also realizes environmental friendliness and resource recycling, and provides a new solution for sustainable development of epoxy resin.

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 relates to the technical field of toughening agents, in particular to a hyperbranched epoxy resin modified MBS toughening agent and a preparation method thereof.The preparation method comprises the following steps that (S1) a cyclotriazine compound, polyglycidyl ether and a catalyst are added into an organic solvent to be mixed, a reaction is conducted for 8-72 h at the temperature of 30-150 DEG C under the protection of nitrogen, and after the reaction is completed, alcohol precipitation and drying are conducted to obtain a hyperbranched epoxy resin modified MBS toughening agent; the hyperbranched epoxy resin is obtained; (S2) adding the hyperbranched epoxy resin into the solvent A, uniformly mixing, then adding MBS resin, stirring for 0.5-1 hour at a high speed under the condition of room temperature, then heating to 70-110 DEG C, stirring for 0.5-1 hour, and removing the residual solvent to obtain the hyperbranched epoxy resin modified MBS toughening agent, and by utilizing the hyperbranched characteristic of the resin, enabling the modified MBS toughening agent to be used for preparing the hyperbranched epoxy resin modified MBS toughening agent. The toughening effect can be achieved by adding a small amount of the toughening agent into common epoxy resin.

The invention provides a composite diaphragm, a preparation method thereof and a lithium ion battery. The composite diaphragm comprises a base diaphragm and a solid electrolyte-water-soluble gel electrolyte composite coating, wherein the surface of the base diaphragm is coated with the solid electrolyte-water-soluble gel electrolyte composite coating by utilizing a roller coating process; the water-soluble gel electrolyte is obtained by co-polymerizing an intermediate I prepared from methyl methacrylate and N-isopropylacrylamide and neopentyl glycol diglycidyl ether. In the composite diaphragm provided by the invention, the water-soluble gel electrolyte can effectively improve the adhesion of the solid electrolyte on the base membrane, and ensure that the solid electrolyte can be effectively adhered to the surface of the base membrane; lithium titanium aluminum phosphate and the like can effectively promote transmission of lithium ions through the solid electrolyte, the hexagonal boron nitride composite coating can prevent direct contact between the lithium titanium aluminum phosphate solid electrolyte and the like and lithium, and the solid electrolyte is protected. And the interface stability of the composite diaphragm is relatively good, and a compact phase formed in the circulation process can effectively inhibit the permeation of lithium dendrites, so that the safety of the battery is improved.

The invention belongs to the technical field of nanocrystal nucleus early strength agents, and provides a damp and hot nanocrystal nucleus early strength agent, a tailing solidification filling material and a preparation method and application of the damp and hot nanocrystal nucleus early strength agent and the tailing solidification filling material. The invention discloses a molybdenum ore tailing slurry which is prepared from the following raw materials in parts by weight: 1 part of Portland cement, 4 to 6 parts of molybdenum ore tailings, 0.06 to 0.1 part of zeolite powder, 0.07 to 0.1 part of nanoscale attapulgite powder, 0.06 to 0.1 part of gamma-glycidyl ether oxypropyl trimethoxy silane, 0.03 to 0.1 part of potassium silicate, 0.04 to 0.1 part of sodium hydroxide, 0.06 to 0.1 part of calcium formate, 0.04 to 0.1 part of lithium metaaluminate and 1.25 to 1.75 parts of water. According to the technical scheme, the problem that a filling body prepared from an early strength agent in the prior art is low in early and later strength is solved, and meanwhile, the early strength agent is simple and convenient in preparation mode, low in cost and wide in application range.

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 relates to hot baking type selective ink and a preparation method thereof. The hot baking type selective ink comprises the following components in parts by mass: 10-20 parts of acrylic resin, 10-20 parts of fluorine-containing polyacrylate, 20-40 parts of an active monomer, 3-10 parts of a photoinitiator, 5-20 parts of modified boron nitride and 1-10 parts of an auxiliary agent, wherein the modified boron nitride is obtained by reacting boron nitride with a silane coupling agent and polypropylene glycol diglycidyl ether. The fluorine-containing polyacrylate is obtained by reacting fluorine-containing acrylate, acrylate and maleic anhydride. According to the invention, not only are the film-forming property and the stability of the ink improved, but also the corrosion resistance, the strength and other properties are enhanced, the protective effect can be more effectively exerted, the stable operation of the PCB is ensured, the problems in the prior art are solved, the requirements of the industry on multiple properties of products are met, and the application prospect is good.

The invention relates to a preparation method of an epoxy and DCP bi-crosslinked EAA and LDPE cable material, and belongs to the technical field of preparation of high-voltage direct-current cable materials. The preparation method of the cable material comprises the following steps: taking an ethylene acrylic acid copolymer EAA and low-density polyethylene LDPE as matrix resin, taking a biphenyl type micromolecular epoxy compound 4, 4 '-biphenol diglycidyl ether and dicumyl peroxide DCP as double crosslinking agents, and carrying out cross-linking reaction to prepare the cable material. And heating and pressurizing in a press vulcanizer to obtain the biphenyl micromolecular epoxy and DCP bi-crosslinked EAA / LDPE high-voltage direct-current cable material. A bi-crosslinking structure formed by biphenyl type micromolecule epoxy and DCP bi-crosslinking EAA / LDPE material and an in-situ introduced voltage stabilizing segment effectively improve the direct current resistance of the cable material. The high-voltage direct-current cable material prepared by the method is simple in preparation process and low in cost, and has excellent mechanical properties and electrical properties.

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 the field of fiber composite materials, in particular to a combined composite material cylindrical shell and a preparation method thereof. The cylindrical shell comprises a plurality of composite material splicing blocks, and each composite material splicing block is prepared from the following raw materials in parts by weight: 40 to 60 parts of glass fiber and 30 to 50 parts of modified epoxy resin; the modified epoxy resin is prepared from the following raw materials in parts by weight: 100 parts of epoxy resin, 15 to 20 parts of carboxy nitrile rubber, 5 to 10 parts of bisphenol A glycidyl ether, 5 to 10 parts of polyether amine, 0.3 to 0.5 part of antioxidant, 5 to 8 parts of preservative, 60 to 80 parts of curing agent, 0.5 to 1.5 parts of accelerant and 5 to 8 parts of nano filler. The mechanical property, the corrosion resistance, the aging resistance and the axial bearing capacity of the cylindrical shell are remarkably improved. The preparation method disclosed by the invention has the characteristics of high efficiency and continuity, and is suitable for large-scale production.

The invention belongs to the field of fiber reinforced composite materials, and provides an SCA modified basalt fiber cement base and a preparation method thereof.The preparation method comprises the following steps that basalt fibers are pretreated; a gamma-aminopropyltriethoxysilane solution, a gamma-glycidyl ether oxypropyltrimethoxysilane solution and a gamma-methacryloyloxypropyltrimethoxysilane solution are prepared, and the dried basalt fibers are soaked in the solutions respectively to be modified; naturally airing at room temperature after soaking, drying in an air dry oven, cooling to room temperature, and sealing and storing; carrying out dry mixing on the modified basalt fiber, ordinary Portland cement, sand and an additive to prepare an SCA modified basalt fiber cement base; by adopting different SCAs and introducing additional reaction functional groups, the interface bonding strength between the basalt fibers and a cement matrix is improved, and the problem of non-uniform fiber dispersion is solved, so that the comprehensive performance of the material is improved.

The invention discloses a corrosion-resistant and fracture-resistant steel structural part and a machining process thereof, and relates to the technical field of metal materials. The anti-corrosion coating is prepared from the following components: 35-55 parts of epoxy resin, 15-25 parts of organic silicon resin, 4-12 parts of modified mica, 5-15 parts of diglycidyl ether, 3-8 parts of a polyamide resin curing agent, 2-4 parts of a silane coupling agent, 1-3 parts of cellulose acetate butyrate and 0.5-3 parts of dimethyl silicone oil; according to the corrosion-resistant and fracture-resistant steel structural part, through the synergistic effect of steel component design and the anti-corrosion coating, the excellent comprehensive performance is achieved, the anti-corrosion coating forms a compact and high-adhesive-force protection layer on the surface of the steel, and through the double effects of physical barriers and chemical protection, the corrosion resistance and fracture resistance of the steel structural part are improved. And the corrosion resistance and the service life of the steel structural member in a harsh service environment are remarkably improved.

The invention relates to the field of aerogel composite materials, in particular to a high-temperature-resistant aerogel calcium silicate composite material and a preparation method thereof, and solves the problems that the mechanical property of aerogel is reduced and the service life is shortened due to the fact that the interface bonding force between an existing aerogel phase and a reinforced phase is easily limited by the material and influenced by modified substances. The preparation method comprises the following steps: firstly, dispersing calcium salt in an aqueous solution of ethanol to form a calcium salt solvent, sequentially adding polymethylacrylic acid and 1, 4-butanediol diglycidyl ether to form a calcium salt gel precursor, placing activated fibers in a polyphenol chitosan solution for reaction, placing reinforced fibers in a molybdenum disulfide turbid solution for ultrasonic dispersion, and drying to obtain the composite material. Then carrying out hydrothermal reaction, immersing the composite fibers into a calcium salt gel precursor for negative pressure vacuum adsorption, and drying to form the high-temperature-resistant aerogel calcium silicate composite material. The interface bonding capacity and the heat resistance of the composite material can be enhanced, and the mechanical property and the heat insulation property of the material at high temperature are remarkably enhanced.

The invention provides a high-light-transmittance hydrolysis-resistant glass fiber and PBT composite material as well as a preparation method and application thereof. The high-light-transmittance hydrolysis-resistant glass fiber and PBT composite material sequentially comprises a fluoride-free boron-free ECT glass core layer, a silane coupling agent middle layer and a copolymerization outer coating from inside to outside, the fluorine-free boron-free ECT glass core layer is prepared from the following raw materials in percentage by mass: 58 to 62 percent of silicon dioxide, 12 to 15 percent of aluminum oxide and 18 to 22 percent of calcium oxide; the raw materials of the silane coupling agent middle layer comprise at least one or more of gamma-methacryloxy propyl trimethoxy silane, gamma-aminopropyl triethoxy silane and gamma-glycidyl ether oxypropyl trimethoxy silane, and the silane coupling agent middle layer comprises at least one or more of gamma-methacryloxy propyl trimethoxy silane, gamma-aminopropyl triethoxy silane, gamma-aminopropyl triethoxy silane and gamma-glycidyl ether oxypropyl trimethoxy silane; the raw material of the copolymerization outer coating is a copolymer formed by polyurethane, acrylic acid and polyurethane-acrylic acid; compared with the prior art, the ECT core layer, the interface enhancement layer and the light regulation and control coating synergistically improve the light transmittance and interface combination, the welding efficiency and quality are improved, and the problems of scattering and hydrolysis of traditional glass fibers are solved.

The invention relates to the technical field of WPC mould pressing floors, in particular to UV paint for WPC mould pressing floor surface coating and a preparation technology of the UV paint. The UV paint for coating the surface of the WPC mould pressing floor is prepared from the following raw materials in parts by mass: 40 to 60 parts of trifunctional polyurethane acrylate, 5 to 15 parts of hexa-functional polyurethane acrylate, 10 to 20 parts of trifunctional polyester acrylate, 1 to 5 parts of acrylic monomer, 5 to 15 parts of wet aluminum oxide and 1 to 2 parts of gamma-glycidyl ether oxypropyl trimethoxy silane. The coating is prepared from the following components in parts by weight: 1-3 parts of diphenylmethane diisocyanate, 0.1-1 part of 5-aminotetrazole, 1-3 parts of carboxyl functionalized PMMA microspheres, 1-3 parts of a flatting agent, 1-3 parts of a photoinitiator, 1-2 parts of a dispersing agent, 1-2 parts of a wetting agent and 20-40 parts of a mixed solvent. The coating is high in curing speed, high in adhesive force, good in flexibility and excellent in wear resistance.

The invention belongs to the technical field of degradation and recovery of high polymer materials, and discloses a subcritical hydrothermal catalytic degradation and recovery method of acid anhydride / glycidyl ether epoxy resin, which comprises the following steps: placing an anhydride / glycidyl ether epoxy resin sample and a nitric acid solution in a hydrothermal reaction kettle; raising the temperature through a program temperature control device and maintaining a constant-temperature reaction. The degradation rate of 80.6%-100% of the epoxy resin can be achieved through the hydrothermal degradation reaction. Compared with a traditional thermal cracking and supercritical fluid degradation process, the method has the advantages that an acidic degradation system without organic solvent addition and transition metal catalysis is innovatively constructed, and efficient degradation of an epoxy resin network structure is realized under the subcritical hydrothermal condition. The process has the characteristics of mild reaction conditions, relatively low energy consumption, environmental friendliness and the like, and provides a feasible chemical technical path for resourceful treatment of the anhydride cured glycidyl ether type epoxy resin waste.

The invention relates to a synthetic method of 1, 4-butanediol diglycidyl ether, 1, 4-butanediol and epichlorohydrin are synthesized in one step under the action of a phase transfer catalyst, in the one-step process, once 1, 4-butanediol and epichlorohydrin are subjected to ring-opening reaction to produce a chlorohydrin ether intermediate, the chlorohydrin ether intermediate is subjected to ring-opening reaction, and the chlorohydrin ether intermediate is subjected to ring-opening reaction to produce the 1, 4-butanediol diglycidyl ether. The intermediate can be subjected to ring-closure production immediately under the action of solid alkali to produce an epoxy group, the obtained 1, 4-butanediol diglycidyl ether is relatively low in easily saponifiable chlorine content, and the target product is relatively high in purity. After the reaction is finished, sodium chloride generated by the reaction and unreacted solid caustic soda can be removed through direct suction filtration to obtain a neutral system, washing is not needed, no waste liquid is generated, operation is easy, and the method is suitable for clean industrial production.

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 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 discloses a room-temperature curing single-component epoxy conductive adhesive and a preparation method and application thereof, and relates to the technical field of conductive adhesives, the single-component epoxy conductive adhesive is prepared from the following components by weight: 100-140 parts of epoxy resin, 20-25 parts of a flexibilizer, 5-15 parts of an epoxy diluent, 10-15 parts of a curing agent, 5-40 parts of silver powder, 4-6 parts of a curing accelerator, and 5-10 parts of single-walled carbon nanotubes. The epoxy resin is one or more of liquid bisphenol A type epoxy resin and liquid bisphenol F type epoxy resin, and the toughening agent is one of phthalic acid esters, polysulfide rubber or polypropylene glycol diglycidyl ether. According to the room temperature curing single-component epoxy conductive adhesive as well as the preparation method and the application thereof, the single-walled carbon nanotubes and the multi-walled carbon nanotubes are added into the prepared single-component epoxy conductive adhesive, so that the conductivity of the single-component epoxy conductive adhesive can be ensured, the cost of the single-component epoxy conductive adhesive is greatly reduced, and the heat conductivity of the single-component epoxy conductive adhesive can be improved.

The invention discloses a modification method and application of double-layer impregnated modified aramid fiber, and the double-layer impregnated modified aramid fiber is prepared by the following steps: reacting hexamethylene diisocyanate and glycerol triglycidyl ether in a water phase to form a first-layer impregnation liquid, and carrying out first-layer impregnation modification on aramid fiber; and forming a second-layer impregnation liquid from ethylene glycol diglycidyl ether, diethylenetriamine, glycidyl methacrylate and butadiene-vinylpyridine rubber latex, performing second-layer impregnation modification on the aramid fibers, drying after double-layer modification to obtain double-layer impregnation modified aramid fibers, and blending and vulcanizing the double-layer impregnation modified aramid fibers and rubber to obtain the rubber-modified aramid fibers. The modified aramid fiber reinforced butadiene styrene rubber composite material can be prepared. By designing a two-step dipping treatment system containing isocyanate and epoxy bifunctional groups, efficient chemical modification of the aramid fiber surface is realized, and a good reaction interface with a rubber matrix is endowed.

The present invention relates to the field of polymer technology, and discloses a preparation method of a modified polyurethane toughened epoxy resin. Using 4-(Boc-amino)phenylboronic acid, diethanolamine, 1,3-bis(3-glycidyletheroxypropyl)tetramethyldisiloxane and other raw materials, a borate siloxane chain extender is obtained through a series of chemical reactions and participates in the chain extension of polyurethane. The epoxy resin is modified with the polyurethane prepolymer to obtain a modified polyurethane toughened epoxy resin. The "soft segment" and Si-O structure in the modified polyurethane can also improve the flexibility of the cured network, effectively change the fracture mechanism of the resin, absorb a large amount of energy when the resin fractures, and help improve the toughness of the epoxy resin. On the basis of ensuring the strength of the epoxy resin, the present invention improves the toughness and flame retardancy of the epoxy resin, and can be applied to fields such as composites, coatings and adhesives with high toughness and flame retardancy requirements, and has wide applicability.

The invention belongs to the field of functional epoxy resin industrial coiled materials, and particularly relates to a degradable and recyclable epoxy coiled material as well as a preparation method and a recycling method thereof. The invention provides an epoxy coiled material prepared by taking degradable epoxy resin as a matrix. The main components of the degradable epoxy resin comprise one or more of bisphenol A diglycidyl ether, neopentyl glycol diglycidyl ether, pentaerythritol tetraglycidyl ether, trimethylolpropane triglycidyl ether and glycerol triglycidyl ether; in addition, glutaric anhydride which helps to cure the resin and 2, 4, 6-tri (dimethylaminomethyl) phenol which helps to promote a curing reaction are compounded. According to the epoxy coiled material, degradable epoxy resin is used as an epoxy resin coating to be coated layer by layer by adopting a three-coating two-coating process method, and reinforced fibers are doped to obtain the high-strength epoxy coiled material with a multi-layer structure. The obtained epoxy coiled material is high in universality, simple in synthesis step and high in practicability and has the characteristics of being degradable and recyclable.

The invention relates to degradable self-repairing epoxy resin based on adjustable performance of dual dynamic covalent bonds and preparation and application of the degradable self-repairing epoxy resin. Firstly, two dynamic bond curing agents (a hindered urea bond and an imine bond) are prepared respectively, and an epoxy monomer bisphenol A diglycidyl ether, the two curing agents and a cross-linking agent 4, 4 '-diphenyl-1, 3-pentanediol diglycidyl ether are mixed to prepare a mixture; the preparation method comprises the following steps: mixing 4, 4 '-diaminodiphenylmethane according to the proportion of each dynamic bond, stirring and reacting at 70-80 DEG C for 30-60 minutes, and carrying out vacuum defoaming; and finally, pouring the mixture into a mold, and molding through a gradient curing process. Compared with the prior art, two different dynamic bond curing agents are utilized to construct a double-dynamic epoxy cross-linked network, so that the obtained material has excellent performance and degradable self-repairing capability, and a high-performance solution capable of repairing, degrading and prolonging the service cycle is provided for the field of electrical insulation.

The invention discloses a high-toughness long-acting steel structure anticorrosive coating material, and relates to the technical field of anticorrosive paint. The anti-rust paint is prepared from the following components in parts by mass: 15 to 20 parts of epoxy resin, 10 to 15 parts of organic silicon polyurethane modified epoxy resin, 5 to 10 parts of organic silicon oligomer containing multiple epoxy groups, 10 to 15 parts of polypropylene glycol diglycidyl ether, 4 to 6 parts of titanium dioxide, 5 to 10 parts of anti-rust pigment, 10 to 20 parts of micaceous iron oxide gray, 2 to 3 parts of auxiliaries, 30 to 40 parts of polyamide 650 and 10 to 15 parts of triethanolamine. The flexibility, the ultraviolet resistance and the corrosion resistance of the anti-corrosion coating material are remarkably improved, and the service life is effectively prolonged.

This invention discloses a bio-based flame-retardant thermally expanding powder coating and its preparation method, relating to the field of coatings. It comprises the following components: bio-based epoxy resin, phenolic epoxy curing agent, ammonium polyphosphate, nano-titanium dioxide, zinc borate, expanded graphene, 8-12 parts of imidazole, benzoin, and a leveling agent. The bio-based epoxy resin is prepared by ring-opening copolymerization of cashew phenol glycidyl ether and linoleic acid prepolymer, followed by epoxy end-capping, with an epoxy equivalent of 900-1200 g / eq; the phenolic epoxy curing agent has an epoxy equivalent of 200-250 g / eq; and the expanded graphene has an initial expansion ratio of 200-300 times. The preparation method employs a two-step, staged mixing process. This invention, while maintaining zero VOC in powder coatings and the same film thickness, achieves for the first time the outstanding performance of 6H hardness, UL94V-0 flame retardancy, and 120 times expansion ratio through the systematic synergy of high epoxy equivalent bio-based resin, four-component complete flame retardant system, specific EG:APP ratio, and two-step process.