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1078results about How to "High impact strength" patented technology

High-temperature resistant and strong corrosive resistant water-based baking varnish for metal and preparation method for baking varnish

The invention relates to high-temperature resistant and strong corrosive resistant water-based baking varnish for metal and a preparation method for the water-based baking varnish. The water-based baking varnish consists of the following raw materials: 40 to 60 percent of resin, 8 to 18 percent of amino resin, 1 to 5 percent of adhesion promoter, 8 to 15 percent of pigment, 1 to 3 percent of salt mist resistant aid, 0.2 to 0.5 percent of pH regulator, 0.1 to 0.5 percent of flatting agent, 0.2 to 0.8 percent of wetting dispersant, 0.1 to 0.2 percent of defoaming agent, 5 to 8 percent of cosolvent, and the balance of water. The volatile organic compound (VOC) content of the obtained water-based baking varnish is low; and the water is used for replacing an organic solvent and used as a thinning agent, so that the water-based baking varnish is nontoxic, odorless and environment-friendly, improves the working environment of construction personnel and protects the body health of the construction personnel. A prepared varnish film has good physical and mechanical properties, high temperature resistance and corrosion resistance, the adhesive force of the varnish film is level 0, the varnish film resists a high temperature of 200 DEG C for 4 hours and yellows lightly, and the salt mist resistance reaches 300h.
Owner:GUANGZHOU JOINTAS CHEM

Halogen-free flame-retardant and cold-resistant PC/ABS (Poly Carbonate/Acrylonitrile Butadiene Styrene) material and preparation method thereof

The invention discloses a halogen-free flame-retardant and cold-resistant PC/ABS (Poly Carbonate/Acrylonitrile Butadiene Styrene) material and a preparation method thereof. The halogen-free flame-retardant and cold-resistant PC/ABS material mainly comprises components of PC and ABS and further comprises a silicon fire retardant, a phosphorus fire retardant, an anti-dripping agent, a compatilizer, a flexibilizer, a lubricant, an antioxidant, and an anti-ultraviolet agent. A preparation process is a twin-screw melting extrusion pelletizing process. According to the preparation method disclosed by the invention, the silicon fire retardant and the phosphorus fire retardant are composited so that the fire resistance 1.2 mm of the obtained PC-ABS alloy material can meet the UL94V-0 class requirement in the United States. The compatilizer MBS (Methyl methacrylate-Butadiene-Styrene) not only enables the PC and the ABS to be better dissolved but also can be used for increasing the compatibility between the silicon fire retardant and a substrate. Therefore, not only can the impact property of the alloy be improved but also the flame retardant efficiency can be effectively improved. The alloy material has the good low-temperature impact property due to the flexibilizer. The silicon fire retardant has a fire retardant synergy effect and further has a smoke suppression effect, so that the fire resistance 1.2 mm of the obtained PC-ABS alloy material can meet the UL94V-0 class requirement in the United States.
Owner:SHENZHEN KEJU NEW MATERIAL

Glass fiber-reinforced polypropylene foaming material and preparation method and application thereof

The invention belongs to technical field of modification of high molecular materials and the technical field of processing, and discloses a glass fiber-reinforced polypropylene foaming material and a preparation method and an application thereof. The material comprises the following components in parts by weight: 35-80 parts of polypropylene, 1-10 parts of a toughening agent, 1-10 parts of a compatilizer, 0.2-0.4 part of an antioxidant and 15-45 parts of glass fibers. The preparation method of the material comprises the following steps of: putting the raw materials into a high-speed mixing machine according to the parts by weight for mixing for 3-5 minutes, adding into an extruder, adding 15-45 parts of glass fibers into a dual-screw extruder from a fiber inlet for extruding, and pelletizing to obtain a needed glass fiber-reinforced polypropylene material; and injecting a supercritical fluid into the glass fiber-reinforced polypropylene material molten at the homogenizing section of a screw rod of an injection molding machine to form a homogeneous solution, and injecting the homogeneous solution into an injection mold through injection molding to obtain a glass fiber-reinforced polypropylene foaming material. The material disclosed by the invention is a most suitable material for an engineering plastic marsh gas pond.
Owner:HEFEI GENIUS NEW MATERIALS
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