46results about How to "Excellent surface scratch resistance" patented technology

This invention provides a window material for a display that comprises a biaxially stretched sheet of a polyester having a multilayer structure of two or more layers, one of which is disposed on an outer layer in a display face in a display, and has a thickness of 0.3 to 5 mm and a light transmittance of 80 to 99.5%. Preferably, the window material for a display has a layer of other resin such as polycarbonate. Further, the window material for a display has a bending strength of 50 to 100 MPa, a bending modulus of elasticity of 3000 to 5500 MPa, and a maximum impact force in a high-speed impact test is not less than 1 kN. The window material for a display is usable as a window material for a display, for example, for liquid crystal display devices (LCDs), cathode-ray tube display devices (CRTs), EL display devices, plasma display devices (PDPs), and projection display devices.

The invention discloses LED four-color printing ink for intaglio printing and a preparation method of the LED four-color printing ink. The technical scheme is characterized in that the LED four-colorprinting ink is prepared from components in percentage by weight as follows: 8%-10% of pigment, 25%-30% of a resin connecting material, 50%-55% of acrylate monomers, 5%-10% of a photoinitiator, 1%-1.5% of a wetting dispersant, 3%-5% of packing and 0.3%-0.8% of a leveling agent. According to the LED four-color printing ink for intaglio printing, a cured ink layer has bright luster, full color and clear lines, continuous printing is realized without stopping, and the ink layer is good in surface leveling property and high in lustrousness.

The invention discloses a special plastic / acrylonitrile butadiene styrene (PC / ABS) alloy for a notebook computer shell. The formula comprises the following materials in parts by weight: 30-80 parts of polycarbonate, 5-65 parts of acrylonitrile-butadiene-styrene copolymer, 5-15 parts of compatilizer, 1-15 parts of flame retardant agent, 3-20 parts of filler, 1-10 parts of hardness modifier, 0.5-5 parts of anti-falling agent and 0-1 part of auxiliary agent. By adopting specific high-molecular polymers of polymethyl methacrylate (PMMA), ultrahigh-molecular polysiloxane and the like, the special PC / ABS alloy selects mineral fillers of specific-size mica, glass fiber and the like to carry out rematching therewith and generates synergistic effect, thus obviously improving the surface hardness and scraping resistance of the material and simultaneously having no influence on the other performances of the material. The PC / ABS alloy material has excellent impact resistance, surface scraping resistance and flame retardance, can meet the requirements of plastic for the notebook computer shell and has considerable promotion and application values.

The invention provides a heat-transfer-printing PET film ultraviolet-curing varnish and a preparation method thereof. The varnish comprises the following components in percentage by mass: 35-50% of hexafunctional polyurethane acrylate, 5-10% of trifunctional polyurethane acrylate, 10-20% of thermoplastic acrylic resin, 0.5-1% of leveling agent, 20-30% of organic solvent and 5-10% of photoinitiator. According to the heat-transfer-printing PET film ultraviolet-curing varnish, the paint film has the advantages of favorable adhesive force, high surface hardness, favorable scratch resistance of the surface, and favorable chemical resistance. The cured paint film has favorable flexibility, and can not crack even after being bent by 90 degrees. In the preparation method, the mild and nontoxic organic solvent is utilized, and has the advantages of small out-emission amount and no environment pollution; the heat-transfer-printing PET film ultraviolet-curing varnish is used instead of the traditional thermocuring transfer printing paint; when the heat-transfer-printing PET film ultraviolet-curing varnish is in use, the paint film can become dry and form a film after being irradiated by ultraviolet light for 10-20 seconds, and thus, the method has the advantages of higher production efficiency, simple film-forming technique, low requirements for film-forming equipment and energy saving, and further lowers the cost.

The invention relates to a polypropylene composite material and a preparation method thereof, belonging to the technical field of modified materials. The polypropylene composite material of the invention comprises the following components in parts by weight: 65-80 parts of polypropylene, 2-12 parts of tungsten disulfide nanorods, and 1-8 parts of compatibilizer. In the present invention, tungsten disulfide nanorods with a specific content are added to the polypropylene matrix under the synergistic dispersion of a compatibilizer with a specific content, so that the WS in the prepared polypropylene composite material 2 rub against each other, resulting in layered sliding, WS 2 Being thinned and ground small, the small chips fill the defects in the wear process, so the friction fluctuation is further reduced and the friction stability is enhanced. Thus, the scratch resistance and strength of the polypropylene composite material obtained in the present invention are obviously improved.