49results about How to "Promote cross-linking and curing" patented technology

The invention discloses a preparation method of an easily processed and quickly crosslinked silane crosslinked polyethylene insulating material. The insulating material consists of a material A and a material B, wherein the material A comprises the following components in part by weight: 100 parts of polyethylene, 5 to 15 parts of ethylene-acrylate copolymer, 2 to 5 parts of silane and 0.1 to 0.5 part of initiator; and the material B comprises the following components in part by weight: 100 parts of ethylene-acrylate copolymer, 2 to 5 parts of catalyst, 2 to 10 parts of lubricating agent, 1 to 10 parts of silicon dioxide, 1 to 5 parts of antioxidant and 2 to 5 parts of copper inhibitor. A cable material prepared by the method has high natural crosslinking speed; and the required crosslinking can be achieved at room temperature in 2 to 3 days. Compared with the conventional natural crosslinked product, the material has the advantages of high crosslinking speed, wide processing temperature range, low corrosion to equipment, low probability of foaming and pre-crosslinking and the like, and can be used as the insulating material for wires and cables of 3kv or below.

The invention discloses a preparation method for an epoxy-acrylate composite emulsion. According to the preparation method, in step one, an acrylic monomer containing active hydrogen is adopted to modify epoxy resin, and the reaction ratio of the active hydrogen to epoxy groups is regulated and controlled, so that chain segments of the modified epoxy resin have double bonds, and part of the epoxy groups are reserved; and in step two, a high-epoxy-resin-content mono-component self-crosslinked stable aqueous epoxy-acrylate composite emulsion with an epoxy group acrylate polymer (core)-'inert' polyacrylate (intermediate layer)-carboxyl-containing (amino)acrylate polymer (shell) structure is prepared by adopting a core-shell emulsion polymerization method. The preparation method provided by the invention is simple in operation, and the problem that giving consideration to both the stability and the corrosion resistance of aqueous epoxy resin simultaneously is difficult is effectively solved.

The invention relates to a method for producing a low-formaldehyde medium-density fiberboard and belongs to the technical field of wood resource utilization. The method for producing the low-formaldehyde medium-density fiberboard comprises the technological steps of raw material slicing, impurity-removal and screening, boiling, waxing and hot grinding, gluing and drying, mat formation and hot pressing, and finished product obtaining. According to the method, residues, such as battens and waste veneer, generated during wood processing are used for producing the low-formaldehyde medium-density fiberboard, waste materials are recycled, and full utilization of wood resources is effectively achieved; the formaldehyde residual volume of low-formaldehyde urea formaldehyde resin adhesive used for producing the medium-density fiberboard is low, in this way, harm to the health of human bodies is reduced, and the bonding force is high; in addition, the fiberboard has good damp-proof performance and good water-proof performance, the internal structure of the board is uniform, the density is proper, the dimensional stability is high, the quality is stable, and the service life is long.

In order to overcome the problem that the storage effect is affected by a catalyst in conventional simple-component polyurethane waterproof coating, the invention provides a single-component polyurethane waterproof coating, which is characterized by being prepared from the following components: polyether polyol, isocyanate, filler, catalyst microcapsules, chain extender and solvent; the catalyst microcapsule consists of a core and a shell wrapping the core, the core contains a palladium catalyst, and the melting point of the shell is between 50 DEG C and 70 DEG C. Moreover, the invention further discloses a preparation method for the single-component polyurethane waterproof coating. The single-component polyurethane waterproof coating provided by the invention can prevent the palladium catalyst from affecting unreacted isocyanate on a prepolymer in the process of storage, thus prolonging the storage time.

The invention relates to a light-curing colored paint. The light-curing colored paint is technically characterized by comprising the following components in percentage by weight: 0.2 to 8 percent of light amine-producing agent, 0.5 to 10 percent of amine proliferation agent, 5 to 30 percent of acetoacetic ester compound, 30 to 65 percent of acrylate light-curing resin, 10 to 40 percent of acrylate activated thinner, 0.1 to 8 percent of photoinitiator and 4 to 8 percent of pigment. The light amine-producing agent contained in the system generates amine catalysts under ultraviolet irradiation, further catalyzes to start the amine-producing proliferation reaction of the amine proliferation agent, rapidly generates massive amines in a coating and automatically spreads to the whole coating system to generate amines along regional chemistry. Therefore, a crosslinked curing film is formed, and an invisible region on the surface or at the bottom of a film layer can be rapidly cured.

The invention relates to a dual-component floor paint and a preparation method thereof, in particular relates to a healthy and environment-friendly dual-component wear-resisting floor paint and a preparation method thereof, and belongs to the field of paints for construction and decoration. The healthy and environment-friendly dual-component wear-resisting floor paint is prepared from a main paint and an isocyanate curing agent at a mass ratio of 1:(0.8-1.2), wherein the main pant is prepared from the following raw materials in parts by weight: 40-55 parts of non-benzene high-hydroxyl short-oil alkyd resin, 10-25 parts of non-benzene low-viscosity short-oil alkyd resin, 0.1-0.3 parts of dispersing agent, 2-5 parts of anti-settling pulp, 1-3 parts of aluminum powder, 0.2-1 part of wax powder, 1-5 parts of matting agent, 0.1-0.5 parts of defoaming agent, 0.05-0.3 parts of flatting agent, 0.1-0.3 parts of wetting agent and 15-30 parts of mixed environment-friendly solvent.

The invention provides water-based environmental-friendly sandpaper. The water-based environmental-friendly sandpaper comprises a base paper layer (1), a waterproof treatment layer (2), a bottom gluelayer (3), an abrasive layer (4), a compound glue layer (5) and an anti-blocking treatment layer (6) which are sequentially arranged from bottom to top. The waterproof treatment layer in the sandpaperimproves the waterproof capability, tensile strength, softness, folding endurance and smoothness of the base paper layer and effectively prevents base glue and compound glue from penetrating to the back of the base paper layer. The anti-blocking treatment layer in the sandpaper can make abrasive dust fall off and be not adhered to the sandpaper, so that the blocking phenomenon generated during the grinding of the sandpaper is reduced effectively, the service life of the sandpaper is greatly prolonged, and the grinding efficiency is improved.

The invention belongs to the technical field of materials, and particularly relates to a degradable core-shell type oxidized calcium alginate gel microsphere, and a preparation method and applicationthereof. According to the preparation method disclosed by the invention, the degradable core-shell type oxidized calcium alginate gel microsphere is prepared on the basis of micro-fluidic control; andan inner oil-phase fluid, a water-phase fluid and an outer oil-phase fluid form oil/water/oil double emulsion droplets, an acidic oil phase fluid containing organic acid is introduced into the downstream position of the oil/water/oil double emulsion droplets, calcium hydrochloride nanoparticles in a water phase of the oil/water/oil double emulsion droplets are rapidly dissolved, and free calciumions are released, so oxidized alginate in a water phase and the calcium ions are initiated to undergo rapid cross-linking so as to form a gelatinous oxidized alginate layer, and the degradable core-shell type oxidized calcium alginate gel microsphere is obtained. The degradable core-shell type oxidized calcium alginate gel microsphere prepared by the preparation method has the advantages that a size structure is uniform and monodispersity is high.

The invention discloses an epoxy resin based anti-static coating and belongs to the technical field of high polymer materials. The epoxy resin based anti-static coating is prepared by the following steps: putting epoxy resin and a diluent in a mixer; stirring and mixing for 40-60min at a rotation speed of 400-600r/min; adding low-melting-point alloy, silver nanowire, a curing agent, drying oil, acoupling agent, coated sodium peroxide, calcium bicarbonate, alkaline phenolic resin and dry soybean oil into the mixer; stirring and mixing for 40-60min at a rotation speed of 400-600r/min to obtainthe epoxy resin based anti-static coating. The epoxy resin based anti-static coating provided by the invention has excellent anti-static property and mechanical property.

The invention relates to a noctilucent imitated sandstone decorative material and a preparation method thereof. The noctilucent imitating sandstone decorative material is prepared by the following components with the weight parts as follows: 50 to 200 parts of unsaturated resin; 0.1 to 5 parts of solidified accelerant; 50 to 500 parts of glass microballoons; 0.1 to 20 parts of inorganic luminous grains; and 0.1 to 5 parts of solidifying agent; the grain diameter of each glass microballoon is 10 to 50 meshes; the decorative material not only has the tactile sensation, the strength and the wear resistant property of natural sandstone, but also has artistic effects different from the yellow color of the sandstone; the decorative material is semitransparent and has the snow white, special artistic effect and the luminous effect, representing a novel decorative material which not only has the artistic quality, but also has the luminous performance.

The invention provides a two-component waterproof polyurethane coating in order to solve the problems of poor catalysis effect and short shelf life of existing two-component waterproof polyurethane coatings. The two-component waterproof polyurethane coating comprises a component A and a component B; the component A comprises first polyether polyol, isocyanate, a catalyst microcapsule and a first solvent, the catalyst microcapsule comprises a capsule core and a capsule shell coated outside the capsule core, the capsule core comprises a palladium catalyst, and the melting point of the capsule shell is 50-70 DEG C; and the component B comprises second polyether polyol, chlorinated paraffin, a filler and a second solvent. The invention also discloses a preparation method of the two-component waterproof polyurethane coating. The two-component waterproof polyurethane coating can avoid the influences of the palladium catalyst on unreacted isocyanate radicals in a prepolymer during storage andprolong the storage time.

The invention discloses a novel negative electrode current collector, a negative electrode composed of the novel negative electrode current collector and a lithium ion battery. A negative electrode piece comprises a substrate layer, a conductive metal layer, a porous conductive layer and a composite binder layer. The invention further discloses a preparation method of the negative plate and a lithium ion secondary battery manufactured by using the negative plate. The weight and the size of the negative plate are reduced, the energy density of the lithium ion secondary battery is improved, the conductivity of the negative plate is relatively good, the problem that lithium ions are separated out and deposited under the high power of the battery is solved, and finally, the safe and reliable lithium ion battery with ultrahigh energy density is obtained.

The invention relates to the field of PP film material preparation methods, and discloses a PP film hydrophilicity improvement method comprising the following steps: 1, taking a PP film, and taking an organic solvent to infiltrate the PP film for 30 min; 2, taking clear water, cleaning the PP film with clear water, soaking the PP film in the clear water for 10 minutes, taking a water-soluble high-molecular polymer solution, and soaking the PP film in the water-soluble high-molecular polymer solution for 30-60 minutes; 3, fishing out the PP film, and soaking the PP film in a cross-linking agent solution for 5-10 minutes; and 4, fishing out the PP film, and draining off the liquid on the surface to obtain the hydrophilic improved PP film. The method for improving the hydrophilicity of the PP film has the advantages of being simple in process and low in cost, and the PP film with the improved hydrophilicity can be applied to microfiltration or ultrafiltration and has excellent water flux and good salt rejection rate.

The invention relates to a soft metal-friendly resin-based friction material and a preparation method thereof, dopamine hydrochloride and hexagonal boron nitride are added into a buffer solution with PH of 8.5 for mixing, and modified boron nitride with the surface uniformly coated with a polydopamine nano-film is obtained. And by uniformly mixing the modified boron nitride serving as a filler with fibers and a resin binding agent, and carrying out hot-pressing curing, the soft metal-friendly resin-based friction material is obtained. The resin-based friction material has the beneficial effects that the anti-attrition lubricating property, the heat-conducting property and the anti-shearing property of the resin-based friction material are improved. The wear rate of the resin-based friction material is reduced by 76%, the wear rate of the soft metal dual disc is reduced by 55.6%, and the surface temperature of the dual disc in the friction process is obviously reduced.

The invention discloses a high-elasticity and high-strength weather-resistant and flame-retardant cable material for wind power generation. The cable material comprises the following raw materials in parts by weight: 35-60 parts of ethylene propylene diene monomer rubber, 20-30 parts of fluorine-containing polymer, 20-25 parts of styrene-butadiene rubber, 6-19 parts of hard clay, 2-6 parts of a monoalkoxy titanate coupling agent, 5-10 parts of aluminum hydroxide, 4-6 parts of red phosphor masterbatch, 3-4 parts of antimony trioxide, 0.3-0.6 parts of sulfur, 0.3-0.6 parts of dicumyl peroxide, 1.5-1.8 parts of N-cyclohexyl-2-benzothiazole sulfenamide, 1.2-1.3 parts of trimethylolpropane trimethacrylate, 1.1-1.5 parts of an antioxidant H, 1.1-1.5 parts of an antioxidant DFC-34, 6-10 parts of zinc oxide, 2-5 parts of melamine cyanurate and 3-6 parts of epoxidized soybean oil. The cable material provided by the invention has high elasticity, high strength, and excellent flame retardancy, wear resistance, ozone erosion resistance and weather resistance.

The invention discloses an aerosol type UV coating which comprises a component A paint vehicle and a component B propellant, the component A paint vehicle comprises the following components in parts by weight: 50-70 parts of oligomer, 20-30 parts of a reactive diluent, 1-3 parts of a photoinitiator, 0.1-1 part of a defoamer, 0.1-1 part of a leveling agent, 0-5 parts of filler, 0-8 parts of pigmentand 0.1-1 part of a polymerization inhibitor, and the filling ratio of the component A paint vehicle to the component B propellant is (1.2-2.0): 1. The aerosol paint adopting the technical scheme hasthe advantages that volatile organic solvents are not added into the paint vehicle; after the product is sprayed, the product is cured under ultraviolet radiation, all the components of the paint vehicle participate in cross-linking film formation, and VOC is greatly reduced; under ultraviolet radiation, a paint film is rapidly cross-linked, the drying speed is high, and the construction efficiency is greatly improved; and a paint film is of a three-dimensional net structure after being cured, the hardness, adhesive force, abrasion resistance, weather resistance and solvent resistance are superior to those of traditional aerosol paint, and the use field of the product is further widened.