149results about How to "Good moisture and heat aging resistance" patented technology

A synthetic method of waterborne polyurethane adhesive is as below: reacting dehydrated polyol, an ionic group-containing diol chain extender and diisocyanate in a reactor, then adding a solvent 1 and a catalyst, continuing the reaction, then adding castor oil or modified castor oil and a solvent 2, reacting, adding a neutralizing agent for neutralization to obtain the intermediate, adding a sulfonic acid group-containing diamine chain extender to the intermediate, stirring, then adding deionized water, uniformly dispersing, then adding an aqueous solution of small molecule diamine chain extender, reacting, removing the solvent under vacuum to obtain a milky white waterborne polyurethane dispersion liquid, and preparing glue by using the milky white aqueous polyurethane dispersion liquid, a thickener, a curing agent and a substrate wetting agent to obtain the waterborne polyurethane adhesive. The waterborne polyurethane adhesive provided by the present invention has the advantages of high solid content, good dispersion stability, high initial bonding strength and good resistance to damp-heat aging.

The invention discloses a resin composition for a base material of a solar backboard. The resin composition comprises the following components in parts by weight: 100 parts of component A and 20-100 parts of component B, wherein the component A is homo-polypropylene, segmented co-polypropylene or the mixture of homo-polypropylene and segmented co-polypropylene; the DSC (differential scanning calorimetry) melting point of the component A is 160-165 DEG C, and the melt flow rate is 1-2g / 10 minutes; the component B is homo-polyethylene, co-polyethylene or the mixture of homo-polyethylene and co-polyethylene; the DSC (differential scanning calorimetry) melting point of the component B is 120-135 DEG C, the melt flow rate is 1-2g / 10 minutes, and the density is 0.941-0.959 g / cm<3>. The base material of the solar backboard prepared from the novel resin composition developed by the invention has excellent low-temperature resistance, damp-heat aging resistance and electrical insulating performance and low saturated water absorption rate and water vapor permeability, and can be used for replacing an existing BOPET (biaxially oriented polyester film).

The invention provides a double-component, heat and humidity resistance epoxy architecture reinforcement glue, comprising first and second components. The preparation method of the glue comprises: 1) adding reactive toughening agent thiocol, fluid epoxy resin, reactive diluent C12-14 tertiary carbonic acid ethylene oxidic ester, reactive diluent phenyl glycidyl ether and antifoaming agent by weight portion, silane coupler, discharged gas phase white carbon black and uniformly stirring, standing and defoaming to obtain first compnent: 2) uniformly stirring the isophorone diamine, metaxylene diamine, aromatic alcohol, salicylic acid and epoxy resin E44 to obtain second component curing agent by weight portion; mixing the promoter and curing agent in proportion to obtain second component. The architecture reinforcement glue without solvent can be cured at room temperature and conveniently constructed, with fine viscosity, good thixotropy, excellent resistance to heat and humidity, mechanical property and adhesive property, without toxin and pollution.

The invention discloses a fluorine-silicon nanometer waterproof and heat-insulating composite material and a preparation method thereof, comprising the steps of: 1) adding fluorine-containing polymer resin and xylene into a jacketed cylinder and stirring evenly; 2) raising the temperature of the liquid in the cylinder to 40-40 60°C, then add nano-silicon solution and stir while stirring, keep the temperature at 40-60°C, stir for 20-40 minutes, then cool to 20-30°C, the above-prepared fluorosilicon nano-resin solution is ready for use; 3) In the material Add fluorine-containing polymer resin, dispersant, and inorganic pigment powder into the tank for high-speed dispersion, and prepare a pigment slurry; 4) Add fluorosilicon nano-resin liquid into the material tank, add pigment slurry, add defoamer, leveling agent, base material Wetting agent, elastic resin, 5 thermal insulation materials, and butyl acetate are stirred to obtain the A component of the fluorosilicon nano-waterproof and heat-insulating composite material; the A component and the coating B component cross-linking agent form the fluorosilicon nano Waterproof and thermal insulation composite. The waterproof and heat-insulating paint of the invention has good weather resistance and corrosion resistance, and is environmentally friendly.

The invention relates to a graphene-coated inorganic filler composite resin glue material, which comprises the following components in terms of weight fractions: 20-35 parts of a resin matrix, 40-60 parts of graphene-coated inorganic fillers, and 20-30 parts of a curing agent . The composite resin glue adopts composite resin matrix, composite inorganic filler and composite curing agent, which can effectively form a heat conduction path and a conductive network. The product of the present invention has extremely high thermal conductivity and certain flame retardancy. The thermal conductivity of the composite resin glue is greater than 9.0 W / mK, and the electrical conductivity is greater than 37 S / m; it has good heat resistance and certain corrosion resistance. It can be widely used in heat dissipation devices, electronic packaging, electronic equipment, chemical energy, automobile industry, aerospace and other fields.