33results about How to "Cross-linking reaction is sufficient" patented technology

Provided is a curable polymer that contains an acid group, a polymerizable unsaturated group and a blocked <span lang=EN style='font-family:"Courier New"'>isocyanato group. The curable polymer<span lang=EN style='font-family:"Courier New"'> has a weight average molecular weight of 1,000 to 50,000 in terms of polystyrene, and preferably has an acid value of 20 to 300 mg KOH / g, an unsaturated group equivalent of 100 to 4,000 g / mol, and a blocked isocyanato group equivalent of 400 to 6,000 g / mol. After mixing the curable polymer with a solvent, blending in a reactive diluent, a photopolymerization initiator and a colorant to prepare a photosensitive material for a color filter, and using said photosensitive material to form a pattern, a color filter is obtained by preferably baking said pattern at 210°C or less.

The invention discloses an ethylene propylene rubber material for a sealing part of an automobile heat dissipation system and a production method of the ethylene propylene rubber material and belongs to the technical field of rubber. The rubber material is prepared from the following components in parts by weight: 100 parts of raw ethylene propylene rubber, 5 parts of zinc oxide, 0.5 to 1.5 parts of stearic acid, 3 to 6 parts of an anti-ageing agent, 20 to 30 parts of fast extruding carbon black N550, 10 to 20 parts of semi-reinforced carbon black N774, 3.5 to 7 parts of a cross-linking auxiliary agent Ricon 153D and 5 to 8.5 parts of a vulcanizing agent Perkadox 14-40B-GR. The rubber material disclosed by the invention has excellent high-temperature-resisting performance and can be used for a long time under the condition that the temperature is -50 DEG C to 150 DEG C; meanwhile, the rubber material has remarkable advantages of low temperature resistance and low-compression permanent deformation.

The invention discloses a production formula and a preparation method for an elastic rotator, which belong to the technical field of road transportation equipment. The formula comprises the following specific components: 10 to 20 percent of ethylene-octene copolymer (POE), 40 to 60 percent of EVA (ethylene-vinyl acetate copolymer), 10 to 20 percent of ethylene-propylene-diene monomer, 5 to 10 percent of anti-shrinking agent, 1 to 3 percent of filler, 0.6 to 1.6 percent of dispersed lubricant, 1 to 2 percent of zinc oxide, 0.7 to 1.2 percent of cross-linking agent, 1.5 to 2.5 percent of foaming agent, 1.5 to 2.5 percent of flowable agent and 2 to 4 percent of color masterbatch pigment, and the total weight is 100 percent. The POE, the ethylene-propylene-diene monomer and the EVA are mixed and refined, and are added with a variety of additives, so that the three types of materials keep respective properties and complement one another, the elasticity of the prepared elastic rotator is high, moreover, after foaming, the texture is dense, the weight is light, the good anti-aging property of the elastic rotator is ensured, the elastic rotator cannot be easily cracked when receiving impact force, and the service life of the elastic rotator is effectively prolonged.

The invention discloses a cotton sweat-resistant formaldehyde-free color fixing agent. The cotton sweat-resistant formaldehyde-free color fixing agent is prepared from the following components in parts by weight: 50 to 100 parts of unsaturated quaternary ammonium salt olefin, 10 to 20 parts of functional monomer, 6 to 12 parts of water-soluble unsaturated polyoxy alkyl ether, 5 to 10 parts of crosslinking reaction monomer, 0.01 to 1 part of self-crosslinking accelerant, 0.005 to 0.02 part of metal ion chelating agent, 0.8 to 1.5 parts of initiator, and 20 to 50 parts of deionized water. The invention also discloses a preparation method and application of the cotton sweat-resistant formaldehyde-free color fixing agent.

The invention provides a preparation method of a biodegradable cast film, which comprises the following steps: carrying out melt blending on PLA, PBAT and a polyester chain extender in proportion to obtain a composite material, carrying out melt blending on the composite material and a dispersion lubricant to obtain a high-fluidity biodegradable material, and carrying out a cast film forming process on the high-fluidity biodegradable material to obtain the biodegradable cast film. By controlling the blending ratio of PLA and PBAT, the variety and the addition amount of the polyester chain extender and regulating and controlling the flowability of the mixed material, the compatibility of PLA and PBAT is improved, the material reaches the casting grade, and the process conditions of melt blending and casting film forming are further limited, so that the production cost is reduced, and the production efficiency is improved. The finally prepared biodegradable cast film not only has excellent biodegradability, but also has better heat resistance and impact property, good ductility and elongation at break, and soft hand feeling; the preparation method is simple and easy to implement, free of adding of redundant modifiers, low in cost and wide in application prospect.

The invention discloses a preparation method of a cellulose microsphere adsorbent, and relates to the field of chemical engineering and environmental protection. The preparation method of the cellulose microsphere adsorbent comprises the steps that cotton straw is cleaned, drying and smashing are performed and then mixed liquid of xylene and ethyl alcohol is added, the mixture reacts in a boiled water bath, and is subjected to washing and suction filtration, a hydrochloric acid solution is added to treat the product, deionized water is added to conduct a water bath reaction, suction filtrationis conducted, and the product is dried for stand-by application; a solution A is added into the pre-treated cotton straw powder to react mutually, after suction filtration and drying are conducted, asolution B is added to react with the product, the product is washed and dried to obtain cotton straw cellulose, the cotton straw cellulose is prepared to be a water solution for stand-by application; semen ricini oil and twain 80 are added into a beaker and stirred for 20 minutes, the cotton straw cellulose water solution is added into the beaker to react with the semen ricini oil and twain 80,and then epoxy chloropropane is added into the beaker to react with mixture; and the oil phase is removed from the reacted system, the product is washed and dried, and the cellulose microsphere adsorbent is obtained. The prepared cellulose microsphere adsorbent has the good adsorption effect on active blue M and metal ions Cr<6+> and Cu<2+> in the wastewater, and has the wide application prospect.

The invention provides non-ironing fabric with a high hang-dry appearance and a manufacturing method thereof. The manufacturing method includes padding the fabric in non-ironing finishing liquid, andstoring the padded fabric in an environment with the temperature of 28-40 DEG C and the humidity of 20-70% for 6-15 hours, wherein the non-ironing finishing liquid comprises a resin crosslinking agentand an acid-base buffering agent; performing steaming treatment at 80-150 DEG C for 2-8 minutes to obtain the non-ironing fabric with the high hang-dry appearance. The non-ironing fabric produced bythe manufacturing method has the high hang-dry appearance under the condition of enough power.

The invention discloses a nylon 66 composite material for a connecting rod sleeve. The nylon 66 composite material is prepared from raw material components such as a PA66 base material, carbon fiber,an interfacial compatibilizer, a dispersant, a chain extender, carbon black, an anti-wear agent and an additive; the obtained nylon 66 composite material is light in specific weight, has very strong designability, not only is easy to mould, but also is uniform in material after moulding, and has various significantly improved properties in lubricity, wear resistance, impact resistance, high temperature resistance, corrosion resistance, ageing resistance and the like. In addition, by a preparation method of the nylon 66 composite material, provided by the invention, the raw material mixing sequence is clarified, and especially after the carbon fiber is mixed with the specific interfacial compatibilizer and the matching dispersant in a dry state, melt extrusion is performed through a single-screw extruder and then feeding is performed through a side feed port, so that processing damage such as surface burring and easy tearing and layering due to addition of the carbon fiber is solved, performance advantages of the carbon fiber are fully played, the preparation limitation is broken through, and thus the high strength and the high performance of the nylon 66 composite material are guaranteed.

The invention relates to a resin composition, a prepreg, a circuit board and a printed circuit board. The resin composition comprises carbon-carbon conjugated group-terminated polyphenyl ether resin, carbon-carbon double bond-containing hydrocarbon resin, a polysiloxane curing agent and a solvent, wherein the structure of the polysiloxane curing agent is shown as a formula (I), in the formula (I), m is an integer of 1-20, R1 is a first alkyl group with a carbon chain length of 1-12, R2 is hydrogen or a second alkyl group with a carbon chain length of 1-12, and at least one of R1 or R2 contains an alkenyl active functional group. The polysiloxane curing agent in the resin composition is not easy to volatilize, so that the stable performance of circuit substrates prepared in different batches can be ensured; moreover, the polysiloxane curing agent does not contain hydrophilic groups and cannot be hydrolyzed, so that in the use process of the circuit substrate, the hygroscopicity of the circuit substrate can be effectively reduced, and the dielectric property of the circuit substrate can be prevented from being degraded due to moisture absorption.

The invention relates to a high-stability micelle type water-soluble quantum dot for coupling of macromolecular proteins. The high-stability micelle type water-soluble quantum dot has a typical core-shell structure, a hydrophobic inner core of the high-stability micelle type water-soluble quantum dot is composed of an oil-soluble quantum dot and a hydrophobic block of a tri-block amphiphilic polymer, and a crosslinking layer and a hydrophilic layer of the tri-block amphiphilic polymer are respectively composed of a crosslinking block and a hydrophilic block of the tri-block amphiphilic polymer. Since the crosslinking block contains a hydroxyl group and has hydrophily before crosslinking, crosslinking reaction can be generated in a water-phase environment after micelle formation, and a covalent bond network surrounding the hydrophobic inner core is formed, so that the stability of the high-stability micelle type water-soluble quantum dot is comprehensively increased; meanwhile, the tailend of a hydrophilic segment of the tri-block amphiphilic polymer is terminated by functional groups except the hydroxyl group, and the high-stability micelle type water-soluble quantum dot can be used for coupling of various macromolecular proteins. Since the high-stability micelle type water-soluble quantum dot has extremely high stability, the high-stability micelle type water-soluble quantumdot is particularly suitable for coupling and fluorescent labeling of the macromolecular proteins.

The invention provides a method for preparing surface metallization aramid fibers. The method includes steps of 1, carrying out aramid surface treatment, to be more specific, removing oil from aramidfibers, cleaning the aramid fibers, then placing the aramid fibers in melamine formaldehyde resin prepolymer solution, treating the aramid fibers at the temperatures of 20-80 DEG C for 5-60 s, then taking out the aramid fibers, mangling moisture on the surfaces of the aramid fibers and drying the aramid fibers; 2, carrying out activation, to be more specific, immersing the aramid fibers, which aretreated at the step 1, in activation solution, carrying out surface activation treatment on the aramid fibers and then removing residual solution on the surfaces of the aramid fibers by water; 3, carrying out reduction, to be more specific, placing the aramid fibers in reducing agents capable of reducing metal ions in the activation solution after the activation treatment is carried out on the aramid fibers, carrying out room-temperature reaction for 1-5 min, then rinsing the aramid fibers by water and drying the aramid fibers; 4, carrying out chemical plating, to be more specific, placing the reduced aramid fibers in plating solution, carrying out chemical plating on the aramid fibers, taking out the aramid fibers after the chemical plating is completely carried out on the aramid fibersand washing and drying the aramid fibers. The method has the advantages that the method is simple, feasible, safe, reliable, ecological and environmentally friendly and is convenient to operate, and large-scale production can be facilitated; the surface metallization aramid fibers prepared by the aid of the method are small in density, high in strength and good in electric conductivity, and the like.

The invention relates to the field of welding auxiliaries, in particular to a zinc oxide resistor disc end surface welding agent which comprises the following components in parts by weight: 20-30 parts of polyaniline nanofibers, 100-180 parts of an organic solvent, 20-25 parts of conductive inorganic nonmetal filler, 20-25 parts of conductive metal filler, 100-150 parts of thermosetting resin, 10-60 parts of a curing agent and 5-30 parts of an accelerant. By utilizing the synergistic effect between the polyaniline nanofibers and the graphene, the graphene can provide a conductive skeleton for the polyaniline nanofibers, and the polyaniline can improve the stability of the graphene; the thermosetting resin has good processability and is easily mixed with the curing agent, the conductive filler and the like, so that the conductive filler is uniformly distributed in the welding agent and is tightly attached to the surface of an aluminum layer of a resistor disc after being cured, and thus, the aluminum layer of a resistor surface is protected; and the welding agent has the advantages of good conductivity, strong adhesiveness, good chemical stability and better mechanical properties.

The invention provides a non-ironing fabric with a high-hanging dry appearance and a preparation method thereof. The preparation method comprises padding the fabric in the non-ironing finishing liquid, and storing the padded fabric for 6h-15h in an environment of 28°C-40°C and a humidity of 20%-70%; wherein, the non-ironing finishing liquid contains Resin cross-linking agent and acid-base buffering agent; steaming treatment, the temperature of steaming treatment is 80°C-150°C, and the time of steaming treatment is 2min-8min, so as to obtain a non-ironing fabric with a high-hanging dry appearance. The non-ironing fabric prepared by the above-mentioned preparation method of the present invention has a high hang-dry appearance under the condition of sufficient strength.

The invention relates to an anti-corrosion and anti-sticking coating for a fire grate segment of a garbage incinerator as well as a preparation method and application of the anti-corrosion and anti-sticking coating. The paint of the anti-corrosion and anti-sticking coating is prepared from the following components: 40 to 60 parts of metal oxide sol, 2 to 4 parts of fluorine-doped graphene, 8 to 12 parts of nano ceramic powder, 6 to 8 parts of anti-corrosion filler, 3 to 6 parts of compatilizer, 1 to 3 parts of silane coupling agent, 4 to 7 parts of auxiliary agent and 40 to 60 parts of solvent, and the sum of all the components is 100 parts.

The invention relates to an environment-friendly processing technology for improving the soil release performance of resin finishing, and belongs to the technical field of textile finishing and processing. The method comprises the following steps: performing singeing, desizing, bleaching, mercerizing and whitening or dyeing treatment on a pure cotton fabric to obtain a semi-finished fabric; padding the semi-finished fabric in the finishing liquid, and then drying, rolling and sealing, reacting and post-processing to obtain the environment-friendly easy-to-clean fabric. The finishing liquid is prepared from the following raw materials in mass volume concentration: 180 to 240g / L of moist cross-linked resin, 90 to 120g / L of resin catalyst, 30 to 40g / L of fiber protective agent, 30 to 40g / L of softening agent, 40 to 90g / L of fluoride-free soil-release auxiliary agent and the balance of water. The method is scientific and reasonable in design, energy-saving and environment-friendly, and the product has good soil release performance and washing resistance and has remarkable economic benefits.

The invention discloses a radiation-proof antibacterial fabric, and particularly relates to the technical field of textiles. According to the prepared radiation-proof antibacterial fabric, due to addition of radiation-proof antibacterial fibers, the radiation-proof property of the fabric is greatly improved, the antibacterial property is excellent, and the bacteriostasis rate on escherichia coli and staphylococcus aureus can reach 99% or above; and a carboxyl-rich lead tungstate-samarium methacrylate complex is obtained by polymerization addition reaction of methacrylic acid monomer and samarium methacrylate on the surface of lead tungstate under the action of an initiator to form a film structure, so that the interface binding force of the lead tungstate and a polyester substrate is greatly promoted.

Provided is a curable polymer that contains an acid group, a polymerizable unsaturated group and a blocked <span lang=EN style='font-family:"Courier New"'>isocyanato group. The curable polymer<span lang=EN style='font-family:"Courier New"'> has a weight average molecular weight of 1,000 to 50,000 in terms of polystyrene, and preferably has an acid value of 20 to 300 mg KOH / g, an unsaturated group equivalent of 100 to 4,000 g / mol, and a blocked isocyanato group equivalent of 400 to 6,000 g / mol. After mixing the curable polymer with a solvent, blending in a reactive diluent, a photopolymerization initiator and a colorant to prepare a photosensitive material for a color filter, and using said photosensitive material to form a pattern, a color filter is obtained by preferably baking said pattern at 210°C or less.

A cationic styrene-acrylic primer emulsion, which includes water, styrene, n-butyl acrylate, isooctyl acrylate, cationic emulsifier, high-density crosslinking monomer, hydrophilic monomer, azo initiator, the above components In terms of parts by mass, they are: 60 parts of water, 5-20 parts of styrene, 5-20 parts of n-butyl acrylate, 5-20 parts of isooctyl acrylate, 1-10 parts of cationic emulsifier, high-density cross-linking unit 1-5 parts of monomer, 1-5 parts of hydrophilic monomer, 1-5 parts of azo initiator. The cationic styrene-acrylic primer emulsion of the present invention has excellent sealing performance on the wall.

The invention discloses a high-voltage cable molded joint interface treatment method, which comprises the following specific operations: (1) treating a crosslinked cable insulation body by using plasma, and immediately performing insulation material extrusion molding after treatment; (2) after full filling, a vulcanization process is carried out, a cross-linking reaction is carried out, and the vulcanization process comprises three heating and heat preservation stage processes; and (3) after the reaction is finished, cooling and preserving heat to eliminate internal stress. According to the method, the cable insulation surface is treated through plasma, so that a cross-linked network structure on the surface is cracked, steric hindrance is reduced, meanwhile, a large number of free radicals are generated, firm binding force between the cable insulation surface and a newly injected insulation material is promoted, and the performance of a body cannot be affected by over-crosslinking; and the electrical and mechanical properties of the molded joint under high-pressure work are improved.

The invention relates to a silane crosslinking halogen-free flame retardant polyolefin composite material. The composite material is prepared by uniformly mixing a base stock, a flame-retardant master batch and a catalyzing master batch according to a weight ratio of 50:45:5, extruding the materials through a screw extruder, and conducting a cross-linking reaction through a warm water bath or a steam bath to prepare the product. A phosphorus-nitrogen compound flame retardant system is prepared by compounding a microencapsulated flame retardant and a macromolecular hyperbranched triazine char forming agent; the flame-retardant master batch, the catalyzing master batch and the base stock are separately prepared and then mixed to prepare the silane crosslinking halogen-free flame retardant polyolefin composite material. Compared to the prior art, the flame retardant efficiency, the water resisting property and the durability of the material are obviously increased; furthermore, the good surface properties and the excellent mechanical properties of the material are kept.

The invention discloses a high-temperature-resistant pressure-sensitive coating material, a preparation method and a protective film. The raw materials of the pressure-sensitive coating material include: polyacrylate pressure-sensitive adhesive: 50% to 65%; cross-linked Agent: 0.5% to 6%; solvent: 10% to 30%; auxiliary agent: 5% to 20%; the crosslinking agent uses a liquid mixture of hexamethylene diisocyanate and dicyclohexylmethane diisocyanate and diphenyl Methane diisocyanate hollow particles; the outer diameter of the hollow particles is 1 mm to 80 mm; the auxiliary agent is ethanol. In the present invention, by improving the type, proportion and adding state of the isocyanate crosslinking agent, adding additives, and adjusting the overall proportioning relationship of the pressure-sensitive coating material raw materials, the polyacrylate pressure-sensitive adhesive and the isocyanate crosslinking agent are fully Contact and sufficient cross-linking reaction to obtain a protective film with good resistance to high temperature, heat and humidity, and acid and alkali.

The invention relates to a high-performance solar module packaged through reliable durable EVA, and belongs to the technical field of solar devices. The module comprises a frame and a cell unit in the frame, and two opposite side edges of the frame are respectively provided with a water inlet and a water outlet. The cell unit comprises a substrate, and the substrate is sequentially provided with a heat-dissipation layer, a first film layer, a solar cell layer, a second film layer, a transparent cover plate, and a third film layer. The interior of the heat-dissipation layer is uniformly provided with column tubes at intervals, and two ends of each column are respectively communicated with the water inlet and the water outlet. The first, second and third films are all EVA films. The module is sealed through three EVA films, thereby guaranteeing the sealingness of a solar cell and the working stability.