118results about How to "Improve crosslink strength" patented technology

The invention relates to a photo-thermal dual-curing anisotropic conductive adhesive film and a preparation method thereof. The anisotropic conductive adhesive film is prepared from raw materials in percentage by mass as follows: 35%-45% of epoxy resin, 10%-25% of acrylic resin, 5%-10% of a cross-linking agent, 2%-7% of a diluent, 0.6%-1% of a photoinitiator, 2.5%- 4% of a thermal curing agent, 5%-10% of an accelerant, 0.5%-2% of a silane coupling agent and 20%-35% of conductive balls. The preparation method comprises steps as follows: the raw materials are blended, subjected to rotary coating and then subjected to ultraviolet exposure processing, and the anisotropic conductive adhesive film is prepared. The anisotropic conductive adhesive film has good conductive performance, excellent weather fastness, low curing temperature, long storage time, high curing degree and high bonding strength; the preparation process is simple, the cost is low, and the application prospect is broad.

The invention discloses a safe and environment-friendly waterborne antibacterial adhesive with high performance and a preparation method thereof. The method comprises the following steps: enabling polymer polyol, a micromolecular hydrophilic chain extender, isocyanate and a solvent to make polymerization reaction in the presence of a catalyst, thus obtaining a polyurethane prepolymer; adding a neutralizer into the polyurethane prepolymer for neutralizing, and then adding water for emulsification, thus obtaining a polyurethane ionomer; adding dispersion liquid of a silver-carrying nano-clay material into the obtained polyurethane ionomer, regulating a pH value to neutral, performing shearing dispersion under the action of a high-speed dispersion machine, and removing the solvent to obtain the waterborne polyurethane antibacterial adhesive with high performance. The waterborne polyurethane is adopted as a substrate, so damage caused by a volatile organic compound (VOC) can be effectivelyavoided to obtain the safe and environment-friendly waterborne polyurethane adhesive with high performance, and the adhesive has the advantages of being safe and environmentally friendly, and free ofVOC; the mechanical property, thermal stability and antibacterial property of the obtained material far exceed that of similar modified waterborne polyurethane.

The invention discloses a waterproof high-hardness waterborne polyurethane coating which is characterized by comprising the following components in parts by weight: 65-80 parts of modified waterborne polyurethane, 20-35 parts of waterborne polyaniline, 3-6 parts of polyisocyanate, 5-20 parts of nano-silica, 3-9 parts of isopropanol, 5-10 parts of ethylene glycol propyl ether, 0.5-1.6 parts of dipentaerythritol, 15-20 parts of polydimethylsiloxane, 3-8 parts of gamma-isocyanate propyl triethoxy silane, 3-8 parts of polytetrafluoroethylene, 0.5-3 parts of modified carbon nanotubes, 5-20 parts of precipitated barium sulphate, 2-6 parts of amino resin, 3-8 parts of zinc powder and 30-60 parts of water. The waterproof high-hardness waterborne polyurethane coating is good in water resistance, high in harness and long in service life.

The invention discloses a dynamic polymer with a hybrid cross-linked network structure. The dynamic polymer contains dynamic covalent bond crosslinking and supermolecular hydrogen bond crosslinking, wherein the dynamic covalent bond crosslinking is realized by associative exchangeable covalent bonds, and the supermolecular hydrogen bond crosslinking is realized by hydrogen bond groups on the sidegroups and/or side chains of a polymer chain framework and hydrogen bond groups on the optional chain frameworks. The polymer integrates dynamic characteristics of a supermolecule and dynamic covalentcharacteristics of glass-like matter; supermolecular hydrogen bonds give stimulative responsibility, energy dissipation performance and self-repairing performance to the material; the associative exchangeable covalent bonds give structural stability and mechanical strength to the covalent cross-linked polymer, and because the associative exchangeable covalent bonds have dynamic reversibility, thepolymer has self-repairing performance, recycling performance, reproducibility and the like. According to the invention, the dynamic polymer with the hybrid cross-linked network structure can be widely applied to vibration-absorptive cushioning materials, impact-resistant protective materials, self-repairing materials, toughness materials, sealing elements and the like.

An articular cartilage graft and a preparation method thereof are provided. The prepared articular cartilage graft is composed of a superficial layer, a middle layer and a deep layer from outside to inside; the thickness, shape and size of each layer are all matched with a cartilage injury part, and thus preoperative shaping is not required; after grafting, the articular cartilage graft has layer distribution corresponding to distribution of each layer of surrounding normal cartilages, is conducive to intercellular signal transmission, transduction and regulation, and can be better integrated with surrounding normal cartilage tissues; the articular cartilage graft has structure characteristics consistent with those of the natural cartilages, the collagen type II content is gradually decreased from the superficial layer to the deep layer, the GAG content is increased gradually from the superficial layer to the deep layer, and compression resistance and wear resistance are good; and chondrocytes in the cartilage graft are wrapped with an extracellular matrix, have low immunogenicity, allow generation of immunologic rejection to be avoided after grafting, can survive for a long term and exert functions, and improve cartilage repair long-term curative effects.

The invention discloses a super-light plastic formula for sports shoe soles, and the formula comprises the following components in parts by weight: 59-69 parts by weight of ethylene-vinyl acetate copolymer, 11-21 parts by weight of polyolefin elastomer, 5-15 parts by weight of metallocene polyethylene, 5-15 parts by weight of acidic ethylene copolymer, 6-8 parts by weight of talc powder, 0.7-1.0 part by weight of zinc oxide, 0.5-0.8 part by weight of stearic acid, 0.6-1.0 part by weight of zinc stearate, 0.5-0.8 part by weight of flowable agent A, 0.3-0.6 part by weight of accelerated bridging agent, 0.25-0.5 part by weight of bridging agent and 4.8-5.4 parts by weight of foaming agent. Plastic soles of sports shoes produced by the technical scheme have super-light performance and the comfort which are unmatched by the ordinary plastic formula, have durable comfort, durable damping performance and other performances and can greatly reduce the consumption of physical strength of athletes.

The invention discloses an integrated data cable for power and data transmission. A first insulating layer covers power copper conductors. An inner sheath layer covers the first insulating layer. A second insulating layer covers data copper conductors. A single-face aluminum foil layer covers the second insulating layer. The inner sheath layer and the single-face aluminum foil layer are located on the two sides of a partition plate respectively. A first side tail wing part, the partition plate and a second side tail wing part are sequentially connected. The first side tail wing part and the second side tail wing part are located on the two sides of the partition plate. A polyester belt layer covers the inner sheath layer, the single-face aluminum foil layer, the partition plate, the first side tail wing part and the second side tail wing part. A double-face aluminum foil layer covers the polyester belt layer. A flame retarding layer covers the double-face aluminum foil layer. By the adoption of the mode, the integrated data cable has long service life, higher balance and reliability, reflection and absorption of high-frequency electromagnetic waves are improved, crosstalk and signal attenuation are improved; meanwhile, crosslinking strength of a base material is enhanced, and the integrated data cable has good physical mechanical performance such as tensile strength and tearing strength.

The invention relates to a cross-linking agent for alcohol-based fracturing fluids, in particular to the development of a controllable cross-linking agent for methanol-based fracturing fluid, and the cross-linking time of the controllable cross-linking agent can be adjusted. For certain natural gas wells or oil wells with low formation pressure, low permeability and strong water-locking characteristic, the controllable cross-linking agent for methanol-based fracturing fluid can be used in the fracturing stimulation process. Inorganic zirconium or zirconate ester is adopted as a raw material, isopropanol or water or the mixture of isopropanol and water is adopted as solvent, suitable ligand is added, the materials react according to a certain material proportion under certain conditions for 4 hours, neutralizer is then added for neutralization, and finally, a moderate amount of diluent is added, so that the controllable cross-linking agent for methanol-based fracturing fluid is prepared. The cross-linking agent can be cross-linked with polymer with 60 to 100 percent of methanol content, the application range is wide, the dosage is little, and the controllable cross-linking agent cannot harm the environment. The biggest difference between the cross-linking agent disclosed by the invention and organic zirconium series cross-linking agents sold on the market is that mixed diluent formed by low-molecular weight sodium polyacrylate and low-molecular weight polyacrylic acid is adopted as the diluent of the controllable cross-linking agent.

The invention discloses a graphene-basalt fiber composite material and a preparation method thereof. The cross-linking of the basalt fiber can be achieved by utilizing the swelling and fusion effectsof graphene oxide coating on the surface of the basalt fiber. The graphene oxide is taken as a sizing agent and a cross-linking agent, the basalt fiber can be evenly coated with the grapheme oxide, the cross-linking process is fast and easy, and the cross-linking intensity is high. After further deoxidization, a grapheme oxide cross-linking layer converts into a graphene cross-linking layer, the interaction between the basalt fibers is enhanced, the contact resistance between fibers is decreased, so that the basalt fiber demonstrates excellent mechanical property and electric and thermal conductivity, which can be used for reinforcement phase of the composite material and differentiated fiber application. The method of cross-linking the basalt fiber with the graphene is of great research value and extensive application prospect.

The invention discloses a method for extraction of a natural plant-based anti-mite antibacterial material and preparation of a finishing agent and an application. The method comprises the following steps: A, extracting a natural plant anti-mite antibacterial material, and extracting effective components from mixed plant materials of dried houttuynia cordata, coptis chinensis and radix sophorae flavescentis by an ultrasonic reflux low-temperature extraction method; and B, preparing the natural plant anti-mite antibacterial finishing agent; firstly, adding an aqueous acrylate adhesive into a liquid anti-mite antibacterial extraction liquid obtained in the step A according to a certain proportion, and stirring for 1-2 h; and then adding deionized water, and stirring for 1-1.5 h, and thus obtaining the stable natural plant anti-mite antibacterial finishing agent. The invention also aims to provide an application of the natural plant anti-mite antibacterial finishing agent in mite and bacteria prevention of fabrics; the finishing agent is prepared by the natural plant anti-mite and anti-bacterial effective components, the fabrics are finished by a dipping and rolling method; the finishing agent has excellent anti-mite and anti-bacterial dual functions, the original hand feeling style of the fabrics is maintained, and a formed anti-mite and anti-bacterial material coating layer has excellent washing resistance property.

To overcome the defects of a soybean adhesive in the prior art, the invention provides a soybean-protein-containing aldehyde-free adhesive and a preparation method thereof, and belongs to the technical field of an aldehyde-free adhesive used for timber. The aldehyde-free adhesive takes soybean protein as a main component, and contains a surfactant, the weight of which is 1-10% of that of soyabean protein, an alkaline compound, the weight of which is 3-15% of that of soyabean protein, metal oxide, the weight of which is 5-20% of that of soyabean protein, polyamide epoxy haloalkane resin, the weight of which is 3-20% of that of soyabean protein, and water the weight of which is 2-5 times of that of soyabean protein. Soybean protein is taken as a substrate, and the surfactant, the modifier of metal oxide and hydroxide and a cross-linking agent are used for comprehensive modification of soybean protein, so that the adhesive strength and water proofness of the soybean protein adhesive are improved.

The present invention discloses ethylene-propylene rubber particles of an active hydrogen-containing compound, and a production method thereof. The ethylene-propylene rubber particles comprise color master batch of an active hydrogen-containing compound, a reinforcing agent comprising an active hydrogen bond-containing nanometer reinforcing agent and a reinforcing agent, and an activator material. The production method comprises: preparing color master batch, wherein an active hydrogen-containing compound is added to a pigment, a color master batch carrier and an anti-ultraviolet ray agent are added, complete dispersion and mixing are performed, and extrusion granulation is performed through an extruder; preparing a reinforcing agent material and an activator material; and preparing ethylene-propylene rubber color particles, wherein a vulcanizing agent is added to the color master batch while the reinforcing agent material, the activator material, an accelerator, a plasticizer and an anti-aging agent are added, opening type mixing and sealed mixing are performed through a roll mill, the obtained material enters a vulcanizing cylinder to be subjected to a vulcanizing treatment to prepare a vulcanizing film, and the vulcanizing film is broken. The ethylene-propylene rubber particles have characteristics of good cross-linking strength with the polyurethane adhesive, strong ultraviolet ray resistance, and bright color.

The invention discloses a graphene-glass fiber composite material and a preparation method thereof. Crosslinking of glass fibers can be realized by means of the swelling and fusing actions of grapheneoxide coatings on the surfaces of the glass fibers. Graphene oxide is taken as a sizing agent as well as a crosslinking agent with which the glass fibers can be coated uniformly, the crosslinking process is rapid and easy, and high crosslinking strength is achieved. Through further reduction, a graphene oxide crosslinking layer is turned into a graphene crosslinking layer, so that mutual action among the glass fibers is enhanced, contact resistance among the fibers is lowered, and the glass fibers show excellent mechanical performance, electric conductivity and heat conductivity and can be applied to a wild phase of the composite material. The method for crosslinking the glass fibers with the graphene has a great researching value and a wide application prospect.

The invention discloses high-elasticity foamed rubber which comprises the following raw materials in parts by weight: 70-75 parts of cis-butadiene rubber, 30-34 parts of epichlorohydrin rubber, 32-36 parts of polyacrylate rubber, 2.4-2.7 parts of a silane coupling agent KH560, 30-35 parts of supercritical CO2, 1.3-1.8 parts of sulfur, 0.7-1.5 parts of an accelerator ZDC, 1.6-1.9 parts of an accelerator M, 13-17 parts of aluminum oxide, 15-20 parts of zeolite powder, 30-35 parts of talcum powder, 50-54 parts of carbon black N-330, 48-52 parts of carbon black N-660, 7-10 parts of magnesium hydroxide, 3-5 parts of diphenyl phosphate, 7-9 parts of melamine cyanurate, 13-15 parts of trioctyl trimellitate, 6-8 parts of phenyl petroleum sulfonate, 2-3 parts of an antioxidant RD and 1.3-1.5 parts of an antioxidant 800-A. The foamed rubber is high in elasticity and good in impact resistance, the foaming is sufficient, and foaming holes are uniform and fine.

The invention belongs to the technical field of dairy products and particularly relates to a method for preparing acidified milk gel. According to the method for preparing the milk gel, milk and a casein solution are sufficiently dissociated by utilizing a calcium ion chelating agent, and are crosslinked with cross-linked enzyme after more junction sites are released, the crosslinking strength canbe improved, the compactness and uniformity of a network structure of the gel formed by acidifying can be improved, and a milk gel product with high strength and good water locking performance can befinally obtained. Compared with a gel product which is formed by directly acidifying a casein solution after enzyme crosslinking, the method can be used for preparing a milk gel product with more compact network structure, higher strength and better water locking performance. The final dairy product can solve the water separating problem, has an elastic taste, and is chewy.

The invention relates to a fracturing liquid system for an oil and gas field, in particular to a manufacturing method of acid crosslinking agent used for CO2 foam fracturing. The invention is characterized in that the acid crosslinking agent is produced by confecting the raw material in the following weight percentage: 5.0 to 30.0 percent of inorganic zirconium salt; 1.0 to 10.0 percent of organic assistant; 0.1 to 20.0 percent of inorganic assistant; 40.0 to 95.0 percent of water. The invention has the advantages of high crosslinking intensity, low cost, easy manufacturing technique, and being easy to operate. .

The invention discloses a PP foaming composite additive, which comprises the following raw materials by weight: 10-30 parts of LLDPE, 10-30 parts of EPDM, 80-40 parts of POE, 3-6 parts of foaming agent, 0.2-1.0 part of cross-linking agent, 1-2 parts of TMPTMA, 0.2-1.0 part of nano zinc oxide; PP enables a rapid degradation while crosslinking foaming, the TMPTMA is taken as a crosslinking auxiliary agent which effectively increases the crosslinking speed, meanwhile, a reactivity reaction is generated between the crosslinking and degrading of PP, and the crosslinking speed is greater than degradation speed. The speed for decreasing the PP melt-strength is alleviated which is beneficial to ideal foaming of PP, in addition, bubble strength and uniformity can be increased by adding nano zinc oxide, and the reaction process can be accelerated, the crosslinking temperature of the cross-linking agent can be reduced, the heat transfer and the crosslinking degree can be increased, the composite additive is benefit for harmless degradation, recovery and treatment of waste PP foaming plastics.

The invention discloses a fishing net thread use quality improvement processing process. The process includes steps: (1) cleaning and deoiling treatment; (2) phosphoric acid solution soaking treatment; (3) treating fluid A soaking treatment; (4) ultraviolet irradiation treatment; (5) treating fluid B soaking treatment; (6) flushing and drying treatment. By special processing of fishing net threads, under joint actions in each step, the grafting effect of the fishing net threads is evidently improved, utilization characteristics of the fishing net threads are improved, and the finally treaded fishing net threads are high in coating compatibility, corrosion resistance, strength and comprehensive quality, thereby being high in popularization and utilization value.

The invention relates to a method for preparing a polymer cross-linking agent. The cross-linking agent includes the following components in weight percentage: organic acid: 15-30%, inorganic base: 4-8%, organic amine: 10-18%, three Valence metal ion salt: 4-10%, tetravalent zirconium salt: 7-15%, aldehyde: 1-5%, and the balance is water. The cross-linking agent of the present invention has a controllable cross-linking time of 10-180s, high cross-linking strength, and the temperature resistance of the cross-linked jelly reaches 150°C; it does not contain phenol, which reduces the harm to the environment; Synthesized under certain conditions, and the finished product is produced at one time, without secondary mixing; the cross-linking agent contains triethanolamine, which greatly increases the gel cross-linking stability of the cross-linking agent.

The invention discloses an exterior wall panel with excellent sound-absorbing and fire-proof performance, which comprises a base layer, a sound-absorbing fireproof layer, a plastering mortar layer, a waterproof layer, a decorative coating and a wear-resistant layer; the preparation method of the sound-absorbing fireproof layer is as follows: hydroquinone, Potassium hydroxide and toluene are mixed evenly, and then a toluene solution containing hexachlorocyclotriphosphazene is added dropwise, heated up, kept warm, washed with an alkali solution to obtain an organic phase, then the organic phase is distilled under reduced pressure, dried in vacuum, and recrystallized to obtain material a ; Mix material a and polytetrahydrofuran ether glycol evenly, then add trimethyl-1,6-hexamethylene diisocyanate, fill with dry nitrogen for protection, heat up, keep warm, and cool down to obtain material b; Add trimethylpentanediol, glycerin, bismuth neodecanoate, foaming agent, foaming aid, expanded perlite, palygorskite, diatomaceous earth, glass fiber, flax fiber, zinc borate hydrate, anti-aging agent and Acetone is mixed evenly, coated on the surface of the base layer, then heated up, and kept warm to obtain a sound-absorbing and fire-proof layer.

The invention provides a waterborne bicomponent fluorocarbon conductive anticorrosion paint, made by mixing component A and component B; the component A comprises, by weight, 50-60 parts of waterbornefluorocarbon resin, 25-35 parts of conductive nickel powder, 1-2 parts of propylene glycol, 0.2-0.6 part of a defoaming agent, 2-3 parts of silane coupling agent, 0.2-0.8 part of a dispersant, 0.1-0.2 part of a leveling agent, 0.1-0.2 part of a PH regulator, 0.3-0.8 part of a wetting agent, 0.2-0.5 part of a dry film mildew preventive, 3-5 parts of a film-forming aid, 0.3-0.8 part of a thickener,and 0-9 parts of deionized water; the component B comprises 65-70 parts of hydrophilic isocyanate curing agent, and 30-35 parts of dipropylene glycol dimethyl ether; the weight ratio of the componentA to the component B is 10:1. film of the waterborne bicomponent fluorocarbon conductive anticorrosion paint has excellent weatherability, water resistance, oil resistance, low temperature resistance, solution resistance, corrosion resistance, and conductivity; static electricity on the surface of a coating layer can be effectively eliminated.