42results about How to "Achieve weather resistance" patented technology

The present invention relates to a method for preparing an acrylic acid-based adhesive capable of improving durability of an adhesive film through additional photo-curing and efficiently removing residual components due to solution photo-polymerization, and to an adhesive film manufactured thereby.

The invention relates to a material used in injection molding of stadium flame-retarding plastic seats with excellent weatherability. According to the invention, a raw material is placed in an injection molding mold, and injection molding is carried out, such that the seats are obtained. During the injection molding process, an injection molding material temperature is controlled at 180-230 DEG C, an injection molding pressure is controlled at 40-70MPa, and an injection molding speed is controlled at 40-60%. The raw material comprises the components of, by weight: 100 parts of polypropylene, 2-8 parts of a flame retardant masterbatch, 0.3-1.0 part of an antioxidant, and 0-1.0 part of a light stabilizer. Compared with prior arts, according to the invention, no antagonistic effect between the flame retardant and the light stabilizer is caused. With a universal light stabilizer, excellent weatherability can be achieved. The material is also advantaged in no precipitation, low cost, and easy injection molding. With the material, industrialized production is easy to realize.

The invention discloses a modified plastic color masterbatch comprising the following components by weight: 63-69 parts of colored polyacrylamide resin, 21-24 parts of soybean oligopeptide, 12-15 parts of glutaraldehyde, 100 parts of water and 3-7 parts of a plasticizer. The carrier resin colored polyacrylamide resin of the color masterbatch is directly polymerized on the surface of a pigment filler to form a coating layer on the surface of the pigment filler, the coating layer is a polymer of maleic anhydride and incompletely saponified fat, the polymer contains an unsaturated olefin bond which is capable of undergoing polymerization and polymerizing with acrylamide and trifluoroethyl methacrylate, so that the surface of the pigment filler is grafted with amino groups and a large amount of fluorine, by glutaraldehyde cross-linking action between the amino groups and the soybean oligopeptide, the center of the prepared colored polyacrylamide resin is the pigment filler, and the pigmentfiller is directly and uniformly dispersed and coated in the carrier resin colored polyacrylamide resin, so that the prepared color masterbatch needs no dispersant to achieve even color distribution.

The invention discloses a water-based nano reflection and heat insulation transparent coating and a preparation method thereof. The formula of the coating comprises the followings in percentages by weight: 35%-50% of a water-based acrylic emulsion, 5%-15% of water-based lithium silicate, 5%-15% of a water-based polyurethane emulsion, 5%-10% of a water-based heat insulation nano dispersion sizing agent, 5%-10% of a water-based heat insulation and heat preservation nano dispersion, 2%-12% of a wetting dispersant, 0.2%-0.5% of a flatting agent, 0.2%-1% of a thickener, 0.1%-0.2% of an antifungus and anti-mildew agent, 0.5%-2.5% of a coalescing agent, 0.5%-2% of a silane coupling agent and 5%-25% of deionized water. According to the water-based nano reflection and heat insulation transparent coating disclosed by the invention, under the precondition of without influencing lighting, heat radiation is blocked and infrared heat energy is prevented from being conducted into the interior of a base material through effective reflection and heat energy conduction, and thus the effects of heat insulation and heat preservation are reached. Heat energy, entering the room through the base material, generated by an outdoor heat source can be effectively blocked in summer, and indoor heat can be effectively blocked from being dispersed in winter, so that the application of refrigeration and heat preservation equipment can be effectively reduced, and the energy-saving effect is obvious.

The invention provides a preparation method for a normal-temperature-cured polytetrafluoroethylene-modified high-solid-content automobile varnish. The preparation method is characterized by comprising a step of mixing main paint, a curing agent and a diluent according to a mass ratio of 100: 50: (10-15), wherein the main paint is prepared by mixing 40 to 59 parts of mixing monomer, 1 to 5 parts of an initiator and 40 to 60 parts of a mixed solvent under stirring in the presence of nitrogen and then adding 3 to 5 parts of modified transparent oily polytetrafluoroethylene resin drop by drop; the curing agent is prepared by mixing 50 to 60 parts of polyisocyanate, 30 to 40 parts of butyl acetate and 10 to 20 parts of propylene glycol methyl ether acetate; and the diluent is prepared by mixing 50 to 60 parts of butyl acetate with 40 to 50 parts of propylene glycol methyl ether acetate. According to the invention, the liquid polytetrafluoroethylene resin prepared on the basis of independent research and development is added into hydroxyl-acrylic resin, so the prepared automobile varnish has the excellent properties of super self-cleanness, high hardness, super smoothness, weatherability, etc.

The invention belongs to the technical field of metal surface paint and in particular relates to high-elasticity, wind-sand-resisting, wear-resisting and weather-resisting finishing paint for a high-speed train and a preparation method. According to the high-elasticity, wind-sand-resisting, wear-resisting and weather-resisting finishing paint for the high-speed train, elastic polyester resin and fluorine-modified acrylic resin form a base film material; then pigments, lamellar body fillers and modified nano silicon dioxide are added into the base film material, and an auxiliary agent, a mixing solvent and a curing agent are mixed with the mixture to form the surface layer coating. By adopting the fluorine-modified acrylic resin and the elastic polyester resin, which have good weather resistance, the elasticity, toughness and weather resistance of a coating layer are improved, so that the coating layer has very good wind-sand scouring resistance, and the service life of the coating layer is prolonged; meanwhile, modified nano fillers are introduced, so that the wear resistance and adhesion property of the coating layer are improved, and the wind-sand scouring resistance and weather resistance of the coating layer are realized.