858 results about "Solvent free" patented technology

The invention discloses a polyurethane modified epoxy resin adhesive as well as a preparation method and application thereof, and the polyurethane modified epoxy resin adhesive is prepared from the following components in parts by mass: 7-10 parts of E51 type bisphenol A diglycidyl ether, 3.5 parts of a phenolic aldehyde amine T31 curing agent and 1-3 parts of synthetic polyurethane, the synthetic polyurethane is prepared from polyether triol, polyether amine, isophorone diisocyanate and glycerol carbonate, and a blending system of the synthetic polyurethane and bisphenol A diglycidyl ether is adopted to be subjected to covalent crosslinking with phenolic aldehyde amine T31, so that the adhesive has high toughness and strength guarantee; the synthetic polyurethane prepared by the method is obtained through simple, green and efficient solvent-free synthesis, and the synthesized product has certain fluidity at room temperature, so that the subsequent stirring preparation process of an adhesive is facilitated. And a solvent-free synthesis method is adopted, so that the use of a toxic organic solvent in the traditional polyurethane synthesis process is avoided, and the synthesis process is greener.

The invention discloses a solvent-free vanillin-hydroxyethyl acrylate double-system closed waterborne polyurethane emulsion adhesive as well as a preparation method and a use method thereof, and belongs to the field of waterborne polyurethane emulsion adhesives. The invention is mainly prepared from the following components in parts by weight: 40 to 50 parts of soft segment monomer, 50 to 60 parts of hard segment monomer, 20 to 40 parts of sealing agent, 0.02 to 0.15 part of catalyst, 0.4 to 0.6 part of emulsifier, 0.2 to 0.6 part of initiator, 4 to 12 parts of neutralizer, 5 to 15 parts of functional monomer and 340 to 360 parts of deionized water. According to the double-system closed waterborne polyurethane emulsion adhesive disclosed by the invention, rapid crosslinking curing of the adhesive can be realized through thermocuring, the highest hardness of an adhesive layer can reach about 26 MPa, the adhesive strength is high, and the mechanical property is relatively good.

The invention relates to the technical field of environment-friendly high polymer materials, in particular to an environment-friendly furniture protective film and a preparation method thereof. The technical problems that a traditional furniture protection film is insufficient in toughness and short in service life are solved. According to the protective film disclosed by the invention, a polylactic acid, polyhydroxyalkanoate and dimer fatty acid ester flexibilizer blending material is taken as a matrix, a cyanoethylation lignin-cellulose nanocrystal compound reinforcing agent is added to form a dense nano network, and a dynamic cross-linking agent containing disulfide bonds and a functional auxiliary agent are introduced. According to the invention, a solvent-free ultraviolet light / damp and hot dual-curing system is adopted for coating and curing to prepare the coating. The furniture protection film is excellent in mechanical property, toughness is remarkably improved, and the furniture protection film has multiple functions such as high barrier property and the like and has the self-repairing capacity and the full-life-cycle environment-friendly characteristic.

The invention relates to a preparation method of soybean oil base polyhydric alcohol, in particular to a method for preparing soybean oil base polyhydric alcohol by directly using soybean oil. The soybean oil diluted by using a solvent reacts with hydrogen peroxide with the weight percentage being 30% for 2-5 hours at the temperature of 60-70 DEG C under catalysis of a catalyst with the weight percentage being 3-5%; vacuum distillation is conducted after the reaction is ended, and the solvent is evaporated; then low alcohol is added in a reactor to be subjected to a reaction for 4-6 hours under the pressure of 0.3-0.4 MPa and at the temperature of 70-80 DEG C, then the reaction is stopped, and the soybean oil base polyhydric alcohol is obtained. The method saves the using amount of hydrogen peroxide, reduces the post-treatment steps, and simplifies the production procedures, and accordingly the product cost is declined directly.

The invention relates to the technical field of anti-corrosion coatings, in particular to a composite anti-corrosion coating for a medium heavy-duty anti-corrosion environment and a preparation method of the composite anti-corrosion coating. According to the technical scheme, the composite anti-corrosion coating for the medium heavy anti-corrosion environment comprises the following components in percentage by mass: a bottom coating component, a middle transition layer component and a surface coating component, and the mass ratio of the bottom coating component to the middle transition layer component to the surface coating component is 33: 17: 50; the durability is improved through multi-dimensional material innovation, a fluorocarbon resin modified waterborne epoxy system is adopted for the bottom coating, and a nano graphene directional arrangement technology is combined, so that a labyrinth effect is formed, and a corrosion medium is blocked; a solvent-free polyurea and microcapsule self-repairing system is introduced into the surface coating, so that automatic repairing after damage is realized; the middle transition layer enhances the interlayer barrier function through the oriented graphene composite material, and the three layers cooperate to construct a compact protection network, so that the medium permeation path is obviously delayed, and the full-life-cycle maintenance cost is greatly reduced.

The invention belongs to the technical field of aerogel, and discloses MXene-based aerogel and a normal-pressure preparation method and application thereof.The preparation method comprises the steps that mixed dispersion liquid of chitosan and conductive filler is mixed with glutaraldehyde, standing and crosslinking are conducted, and hydrogel is obtained; in the hydrogel, the conductive filler accounts for 20-75% of the mass of a solid substance, the chitosan accounts for 15-55% of the mass of the solid substance, and the glutaraldehyde accounts for 1-20% of the mass of the solid substance; the filler is selected from MXene, a carbon nano tube, graphene, boron nitride or MOF (Metal Organic Framework); the hydrogel is frozen at the temperature ranging from-20 DEG C to-80 DEG C; and carrying out normal pressure drying on the frozen hydrogel at 25-80 DEG C to obtain the aerogel. The solvent exchange-free normal-pressure drying preparation process breaks through the limitation of solvent exchange on the size, the high cost of a large amount of solvent is saved, large-area extensible preparation can be realized on the basis of energy conservation and environmental protection, and meanwhile, the prepared aerogel has relatively high mechanical strength, and the application range is widened.

According to the preparation method of the high-temperature-resistant durable super-hydrophobic powder coating, integrated powder coating particles are prepared by mixing through a tabletting-crushing-sieving technology, and finally, one end of a solid nano-material in the integrated powder coating particles is embedded into a bottom layer, and the other end of the solid nano-material protrudes out of the surface of the coating, so that a nano-fiber bridging interface strengthening structure is formed. According to the invention, the low surface energy material, the solid nano material and the thermoplastic film-forming resin are effectively combined together to construct firm and stable integrated powder coating particles, so that the overall performance is synergistically enhanced, and the protection capability of a micron-scale structure to a nano-scale structure is greatly improved; the solvent-free durable super-hydrophobic powder coating is directly prepared through electrostatic spraying, so that the technological process is simplified; the solid, solvent-free and environment-friendly super-hydrophobic powder coating is prepared, has excellent high-temperature resistance and super-hydrophobic performance, and has potential advantages in the aspect of anti-corrosion and anti-drag application of a heat distribution pipeline.

The invention discloses a degradable preservative film and a preparation method thereof. The film takes nano chitosan / agarose in a ratio of 1: 1 as a matrix, contains 0.5-5wt% of PVA (Polyvinyl Alcohol), 1-4wt% of protein powder or starch, 0.2-3wt% of tea polyphenol / carvacrol, 5-20wt% of glycerol and optional 5-15wt% of polylactic acid, and is cross-linked with sodium alginate. And carrying out tape casting at 55-65 DEG C, and carrying out gradient drying at 40-50 DEG C, thereby obtaining the product. The film is compact and flexible, the breaking strength is larger than or equal to 69 MPa, the oxygen permeability is low, the inhibition zone on six germs is enlarged by 3-4 mm, 98% of natural soil is degraded 20 days later, and no toxic smoke is generated during incineration. The biodegradable film is solvent-free in preparation, can be produced by existing equipment, is lower than a traditional biodegradable film in cost, can be in direct contact with food, remarkably prolongs the fresh-keeping period of fruits and vegetables, replaces PE and PVC, and solves white pollution.

The invention relates to the technical field of coatings, in particular to a solvent-free anti-doodling cover agent as well as a preparation method and application thereof. The solvent-free anti-doodling finishing agent is prepared from the following raw materials in percentage by mass: 80 to 95 weight percent of solvent-free methyl phenyl silicone resin, 1 to 5 weight percent of a curing agent, 3 to 8 weight percent of an adhesion enhancer, 0.5 to 3 weight percent of an anti-doodling auxiliary agent and 0 to 6 weight percent of an optional delustering agent. The core is that the adhesion enhancer is an enhanced silane coupling agent and is prepared by carrying out molecular-level chemical bonding on a titanium compound, the silane coupling agent and a self-made antifouling agent. The finishing agent disclosed by the invention has the advantages of high adhesive force, excellent stain resistance, adjustable glossiness and the like, and is suitable for base material protection of various scenes such as building outer walls, household crystal plating and artistic coatings.

The present invention concerns a paper-based barrier multilayer packaging material structure (1) being formed as a unitary sheet and comprising from its outer surface to its inner surface, the following layers: —a polymer dispersion coating (9) having a thickness of 1 to 10 μm, —a paperboard (8) having a grammage of between 120 g / m2 and 500 g / m2, —a water-based or solvent-less adhesive (7) having a thickness of 1 to 10 μm, —a barrier metallized paper layer (MBPL) having substance weight between 30-120 g / m2, preferably 45 to 90 g / m2 and a Water Vapour Transmission Rate (WVTR) of 10 to 0.1 g / m2 / d, preferably a WVTR of 1.0 to 0.1 g / m2 / d measured at 38° C. and 90% RH, and an Oxygen Transmission Rate (OTR) comprised between 100 and 0.1 cc / m2 / d, measured at 23° C. and 50% RH, preferably an OTR comprised between 1.0 and 0.1 cc / m2 / d. —at least one layer of a polymer dispersion coating (2) having a thickness of 1 to 25 μm, preferably of 5 to 15 μm.

To provide a laminate excellent in tearing property while reducing environmental load.SOLUTION: A laminate comprises a substrate film, a primer layer, an adhesive layer, and a sealant film in this order, and includes a printed surface of an electrostatic ink composition adhered to the adhesive layer. The adhesive layer contains a solvent-free adhesive composition including a polyol component and a polyisocyanate component, its cured product, or a mixture thereof, and the adhesive strength of the adhesive layer is 1.0 N / 15 mm width or more. The laminate has a group of scratches, each consisting of multiple scratches that include through-holes.SELECTED DRAWING: Figure 1

The invention provides an elastic polyaspartic acid ester polyurea floor coating and a preparation method thereof, the floor coating comprises a main agent and a curing agent, the main agent comprises first polyaspartic acid ester resin, second polyaspartic acid ester resin, a functional auxiliary agent, and a pigment filler; the curing agent comprises first isocyanate and second diisocyanate; the first polyaspartic acid ester resin is selected from PAE0760, and the second polyaspartic acid ester resin is selected from F520; the first isocyanate is selected from a glycidyl ether compound modified HDI (Hexamethylene Diisocyanate) tripolymer; and the second diisocyanate is selected from HDI (hexamethylene diisocyanate) uretdione. The polyaspartic acid ester polyurea floor coating disclosed by the invention can be used for obviously improving the tensile strength and the scratch resistance of the polyaspartic acid ester polyurea floor coating and improving the leveling property of the polyaspartic acid ester polyurea floor coating while keeping good elastic property, and is a solvent-free polyaspartic acid ester polyurea floor coating with excellent comprehensive performance.

The invention discloses a method for catalyzing degradation of polyolefin mixed plastic by using molten salt. The catalyst is composed of gallium chloride or gallium chloride and other metal chlorides, has a low melting point, high fluidity and strong Lewis acidity, and can degrade polyethylene (PE), polypropylene (PP), polystyrene (PS) plastics and mixtures thereof at 70-170 DEG C under a solvent-free condition to obtain C4-C16 + alkane, olefin and aromatic hydrocarbon. The method is suitable for actual waste plastic resource recovery, and has the advantages of mild conditions, low energy consumption, product controllability and the like.

The application discloses a kind of gangue mild, green preparation method of molecular sieve, comprising the following steps: supplementary aluminum source, activated gangue, alkali source, seed crystal, water and hydrochloric acid are mixed, so that the molar ratio of SiO2, Al2O3, Na2O, hydrochloric acid, seed crystal and water is 1:(0.1-5.0):(0.5-2.5):(1.0-5.5):(0-0.1):(0-100), then uniformly mixed, and crystallization reaction is carried out, to obtain molecular sieve.The present application uses coal gangue powder, sodium hydroxide and supplementary aluminum source as raw material, combined with low-temperature alkali liquid phase activation method and solvent-free synthesis method, different framework structure of coal gangue-based molecular sieve with excellent structural characteristics can be prepared, different silicon-aluminum ratio when raw material is different, the present application supplements different amount of silicon-aluminum source for different raw materials to achieve suitable matching ratioThe crystallinity of molecular sieve prepared in the present application is good, and the hydrothermal stability is good, and heavy metal ions in water body can be removed.

The invention belongs to the technical field of adhesive tapes, and particularly relates to a UV protective film for packaging substrate cutting and a preparation method thereof.The UV protective film comprises a PO base material layer, a non-solvent type UV viscosity-reducing adhesive layer and a PET release layer, and the non-solvent type UV viscosity-reducing adhesive layer is located between the PO base material layer and the PET release layer; the non-solvent type UV viscosity-reducing adhesive layer comprises the following components: an acrylate soft monomer, an acrylate hydroxyl monomer, an acrylate hard monomer, an acrylate monomer with a space crosslinking site, n-dodecanethiol, a photoinitiator and a photosensitive multifunctional group acrylate monomer. The non-solvent type UV viscosity-reducing adhesive layer is introduced, so that the preparation process is environment-friendly and free of solvent volatilization, the UV protective adhesive is high in viscosity and excellent in impact resistance before UV irradiation, the adhesive layer is stably attached before cutting, and the UV protective film is stripped at low stress and free of residual adhesive after irradiation.

The invention discloses a solvent-free epoxy coating and a preparation method thereof, and relates to the technical field of coatings. The solvent-free epoxy coating is composed of a component A and a component B, the component A is composed of a high-performance modified reinforced composite filler, epoxy resin, a composite reactive diluent, a defoaming agent and a leveling agent; the component B is a curing agent polyether amine D-230; the high-performance modified reinforced composite filler is uniformly dispersed and stably embedded into an epoxy resin base material, and internal stress caused by filler agglomeration and poor interface can be reduced due to excellent compatibility and dispersibility, so that the coating is not easy to fall off from the base material after being cured; and the excellent adhesion and dispersibility also avoid abrasion, shedding and cracks caused by insufficient adhesion or interface defects, so that the toughness and wear resistance of the coating are enhanced, the permeation of a corrosive medium is fully isolated, and the adhesion, wear resistance and corrosion resistance of the coating are further enhanced under the assistance of auxiliaries such as the composite reactive diluent.

The invention belongs to the technical field of synthetic leather, and particularly discloses breathable stripping-resistant water-based / solvent-free polyurethane synthetic leather and a preparation method thereof.The synthetic leather comprises base cloth, a solvent-free polyurethane layer and a water-based polyurethane surface layer, and the solvent-free polyurethane layer and the water-based polyurethane surface layer are sequentially arranged on the base cloth; modifying and activating the base cloth by a wide plasma cleaning machine; the solvent-free polyurethane layer slurry is prepared from a carbon dioxide-based polyether type A material prepolymer, a polyether type B material prepolymer, color paste, a dispersing agent, isocyanate modified aerogel and nano filler; the waterborne polyurethane surface layer slurry is prepared from epoxy resin modified carboxylic acid type waterborne polyurethane emulsion neutralized by triethylamine, epoxy modified aerogel, waterborne color paste, a defoaming agent and a thickening agent. The modified aerogel is introduced into the solvent-free polyurethane layer and the waterborne polyurethane surface layer, and oxygen plasma pretreatment activation on the base cloth is cooperated, so that the obtained waterborne / solvent-free polyurethane synthetic leather has an excellent breathable function and high peel strength, and has a wide market prospect.

The invention discloses a flame-retardant low-VOCs aqueous adhesive and a preparation method thereof. The preparation method comprises the following steps: S1, preparing a pre-emulsion; S2, synthesizing a resin emulsion; S3, preparing a flame-retardant dispersion; the phosphate flame-retardant monomer participates in the copolymerization reaction of acrylate, and cooperates with hyperbranched ammonium polyphosphate and zinc borate to form a condensed phase and gas phase dual flame-retardant barrier; hydroxyl-containing phosphate is embedded into a solvent-free polyurethane curing agent system, so that aliphatic diisocyanate synchronously completes crosslinking, flame retardance and thickening under the action of an organic tin catalyst, and VOCs introduced by a traditional thickening agent are eliminated from the source; the final value of the NCO content is accurately controlled through a synchronous dropwise adding process and dynamic monitoring of the NCO content, so that the viscosity is stable, and sedimentation and layering are avoided; the long-standing contradiction of high flame retardance, namely high VOCs, and strong adhesion, namely weak constructability, in the field of waterborne adhesives is solved.

The invention relates to the technical field of TPU, in particular to a solvent-free foamed TPU high-low temperature film and a preparation method thereof. The solvent-free foaming TPU high and low temperature film is prepared from the following raw materials in parts by weight: 25 to 35 parts of isocyanate, 50 to 60 parts of polyhydric alcohol, 8 to 12 parts of a composite chain extender, 0.02 to 0.1 part of a catalyst, 0.1 to 0.3 part of an antioxidant and 0.1 to 0.3 part of an ultraviolet absorbent, the composite chain extender is a mixture of micromolecular dihydric alcohol and a bio-based chain extender. The environment-friendly coating has the advantages of excellent environment-friendly performance, no chemical solvent residue, no VOC (volatile organic compound) pollution, avoidance of tail gas treatment in the preparation process, reduction of energy loss in production, and good mechanical property and temperature resistance.

The invention discloses a high-stability bio-based polyurethane adhesive for artificial turf and a use method of the high-stability bio-based polyurethane adhesive, and relates to the technical field of polyurethane adhesives. The adhesive comprises the following raw materials in parts by weight: a component A: 20-60 parts of bio-oil polyol, 20-60 parts of polyether polyol, 5-15 parts of a chain extender, 0.1-1 part of an anti-aging agent, 1-5 parts of a dispersing agent, 0.1-1 part of a catalyst, 2-5 parts of color paste and 100-300 parts of filler; the component B is prepared from 30 to 60 parts of isocyanate. According to the polyurethane adhesive, environment-friendly solvent-free raw materials are adopted, and the bio-oil polyol is used as a main material, so that the polyurethane adhesive has reproducibility, environmental friendliness and naturalness; the high-performance dispersing agent is added, so that the stability of the polyurethane adhesive is improved, the viscosity of a system is reduced, the bonding strength of the adhesive is improved, the mixing uniformity of polyurethane is effectively enhanced, the stabilizing time is long, the performance is better, and the polyurethane adhesive can be better applied to artificial turf as an adhesive.

This invention discloses a high-performance solvent-free self-healing wear-resistant topcoat for wind turbine blades and its preparation method, belonging to the field of wind power generation technology. The high-performance solvent-free self-healing wear-resistant topcoat comprises component A and component B. Component A contains IPDI trimer, POSS-isocyanate nano-hybrid, urea-based supramolecular thickener, and latent organic bismuth catalyst. Component B contains modified polyaspartic acid ester, 3-aminopropyltrimethoxysilane, and fluorinated segment polyaspartic acid ester. The high-performance solvent-free self-healing wear-resistant topcoat of this invention constructs a rigid and tough cross-linked network by introducing POSS-isocyanate nano-hybrid and modified polyaspartic acid ester, solving the interfacial incompatibility problem of traditional physically blended coatings. Simultaneously, it endows the coating with excellent wear resistance, strong adhesion, and micro-scratch self-healing ability. This topcoat is a solvent-free system, environmentally friendly, and has good application performance, effectively extending blade life.

A silicate resin that is a liquid at 25° C. in the absence of any solvent is disclosed. The silicate resin has the average formula: [W]a[X]b[Y]c[Z]d, where subscript a is from greater than 0 to 0.5; subscript b is from greater than 0 to 0.5; subscript c is from 0 to 0.5; and subscript d is from greater than 0 to 0.6; with the proviso that a+b+c+d=1; and wherein W, X, Y and Z are defined siloxy units. A method of preparing the silicate resin is also disclosed.

The invention relates to the technical field of research and development of waterproof and breathable films, and discloses a waterproof and breathable composite fabric and a preparation process thereof.The product structure of the fabric is as follows: polyester high-elastic twill fabric is used as a fabric, hot melt mesh glue is used as a middle layer, and a polyurethane waterproof and breathable film is used as a lining. The fabric, the middle layer and the lining are laminated and compounded on a pressing machine, and the waterproof and breathable composite fabric is prepared; the polyurethane waterproof moisture-permeable film comprises an isocyanate prepolymerization component and a polyol component, a hydroxyl-terminated alkyl long-chain linear or cage-containing siloxane monomer is chemically introduced into an isocyanate prepolymerization component, and a solvent-free double-component reaction coating curing process is adopted to prepare the polyurethane film with excellent waterproof performance. The water resistance of the prepared polyurethane film product can meet the commercial use requirement.

This invention relates to a high lightfast polyurethane composite material, comprising, from top to bottom, a polyurethane top layer, a polyurethane intermediate layer, a solvent-free polyurethane adhesive layer, and a base fabric layer. The solvent-free polyurethane adhesive layer is prepared from a solvent-free polyurethane adhesive layer slurry, which is a mixture of polyether-type polyol component A and isocyanate prepolymer component B. The polyether-type polyol component A is prepared from the following components in parts by weight: 100 parts polyether-type polyol, 20-80 parts filler, 0.38-0.48 parts composite catalyst, and 0.5-1 parts anti-yellowing agent. The composite catalyst is formed by combining organometallic catalysts and amine catalysts. The solvent-free polyurethane adhesive layer of this invention's high lightfast polyurethane composite material exhibits good adhesion, achieving excellent bonding with the base fabric and forming a good lightfast and heat-resistant system in each layer, resulting in a composite material with excellent lightfastness and heat-resistant color-changing properties.

The invention relates to the technical field of anticorrosive paint, in particular to solvent-free and plasticizer-free spraying type metal anticorrosive paint and a preparation method thereof.The solvent-free and plasticizer-free spraying type metal anticorrosive paint is prepared from, by weight, 40-60 parts of polysiloxane resin, 30-50 parts of reactive diluent, 0.3-1 part of epoxy silane coupling agent, 1-3 parts of amino silane coupling agent, 30-40 parts of silica powder and 0.15-0.4 part of organic tin. 1 to 3 parts of vinyl trimethoxy silane, 0.4 to 1.6 parts of anti-aging agent and 0.1 to 0.5 part of polyamide wax; 0.3 to 0.8 part of an organic silicon defoaming agent; by optimizing the matching of the modified polysiloxane resin, the reactive diluent and other raw materials and controlling the addition amount, the provided product achieves high solid content and low viscosity, and comprehensive properties such as adhesive force and mechanical properties are guaranteed while the spraying construction requirement is met.

The utility model provides a mixing device for producing a novel water-based nano material, and belongs to the technical field of production of novel water-based solvent-free materials. Comprising a stirring tank; the inner wall protection assembly is arranged in the stirring tank, the inner wall protection assembly comprises a main protection plate arranged on the inner wall of the stirring tank and auxiliary protection plates arranged on the two sides of the main protection plate, and elastic clamping blocks are fixedly connected to the sides, close to the auxiliary protection plates, of the main protection plate; by arranging the inner wall protection assembly and adopting a mode of stacking a main protection plate and an auxiliary protection plate, the main protection plate and the auxiliary protection plate can separate the inner wall of the stirring tank from a water-based nano material, and the auxiliary protection plate located at the top of the stirring tank is pushed to move upwards, so that an elastic clamping block and a clamping groove can be separated from each other; in this way, the auxiliary protection plate and the main protection plate can be smoothly taken out from the interior of the stirring tank in sequence, the protection effect on the inner wall of the stirring tank can be maintained, and the replacement efficiency of the main protection plate and the auxiliary protection plate can be improved.

The utility model discloses a high-speed dispersion machine for preparing flame-retardant ecological synthetic leather based on solvent-free foaming, and relates to the technical field of synthetic leather preparation, the high-speed dispersion machine comprises a frame body, and a controller is arranged on the side wall of the frame body; the top of the frame body is fixedly connected with a top cover, and feeding ports for feeding are embedded in the front and rear ends of the top of the top cover; the top of the top cover is fixedly connected with a reducer; the driving end of the reducer is fixedly connected with the upper end of the stirring rod; the speed reducer is used for driving the stirring rod to rotate, while the stirring rod rotates, the electric push rod drives the piston plate to move, air is pressed into the connecting pipe, the stirring rod and a cavity in the transverse rod, the rubber film is expanded, and the expanded rubber film makes contact with the inner side wall of the frame body to extrude materials. The dynamic extrusion process contributes to further dispersion and mixing of the materials, and at the same time may promote chemical reaction or physical combination among the materials.

The invention discloses a preparation method for synthesizing a lithium battery positive electrode material by a solvent-free solid-phase method, particularly relates to the technical field of electrochemistry, and relates to the preparation method for synthesizing the lithium battery positive electrode material by the solvent-free solid-phase method. The lithium battery positive electrode material synthesized by the solvent-free solid-phase method is prepared from lithium acetate, nickel cobaltate, manganese cobaltate and a composite functional agent; the preparation raw materials of the lithium battery positive electrode material synthesized by the solvent-free solid phase method comprise the following components in parts by mass: 100 parts of lithium acetate, 74.3-97.2 parts of nickel cobaltate, 4.0-18.5 parts of manganese cobaltate and 6.8-14.6 parts of a composite functional agent, by adopting lithium acetate as a clean lithium source and combining with a solvent-free solid-phase synthesis method assisted by a composite functional agent, organic solvent pollution and harmful gas emission are eliminated from the source, and the lithium acetate is decomposed at a low temperature without solid residues by utilizing the characteristic of lithium acetate without solid residues and cooperating with a reducing atmosphere generated by decomposition of organic components in the functional agent, so that the lithium-ion battery cathode material is obtained. And the problem of pollution caused by high-temperature decomposition of the lithium salt in the traditional process is effectively avoided.

The invention relates to the technical field of adhesives, in particular to a solvent-free low-temperature-resistant polyurethane adhesive and a preparation method thereof. The solvent-free low-temperature-resistant polyurethane adhesive comprises the following components in parts by weight: a component A: 60-70 parts of low-temperature-resistant polyol A, 10-20 parts of bio-based polyol, 1-2 parts of a silane coupling agent and 20-30 parts of a reinforcing filler A; and the component B comprises the following components in parts by weight: 70-80 parts of polyurethane prepolymer and 20-30 parts of reinforcing filler B. The adhesive has excellent comprehensive performance by enhancing physical crosslinking of a polyurethane network, is suitable for a low-temperature environment, and has good development potential in the fields of new energy automobiles, aerospace, traffic and the like.

The invention discloses a high-temperature-resistant solvent-free PU adhesive and a preparation process thereof, and relates to the technical field of polyurethane adhesives, and the high-temperature-resistant solvent-free PU adhesive is prepared from the following raw materials in parts by mass: 100-120 parts of polyether polyol, 30-50 parts of isocyanate, 10-20 parts of hydrocarbon hydroxyl silicone oil, 2-4 parts of silicon carbide nanowires, 0.1-0.5 part of a catalyst and a production auxiliary agent; the production auxiliary agent comprises a defoaming agent and a tackifier, and the defoaming agent accounts for 0.5 to 0.8 part, and the tackifier accounts for 0.6 to 1.2 parts. The hybrid network provides excellent chemical stability at the temperature of 200 DEG C or below, the nanowire maintains mechanical strength at the temperature of 200 DEG C or above, and the overall temperature-resistant range is widened; the solvent-free PU adhesive does not generate cracks in thermal circulation, and can resist high temperature of 220 DEG C at most, so that the high temperature resistance of the solvent-free PU adhesive is remarkably improved.