525results about How to "High transparency" patented technology

Intermediate film for laminated glass and laminated glass

The object of the present invention is to provide an interlayer film for laminated glass which exerts excellent heat insulation or electromagnetic wave transmittance and which is suitable for producing a laminated glass having excellent fundamental performance characteristics required for the laminated glass, such as transparency, especially good haze, appropriate bond strength between an interlayer film and glass, penetration resistance, impact absorption, weather resistance, and so on. Also, the object of the present invention is to provide a laminated glass produced by using the above-mentioned interlayer film. These objects are realized by the interlayer film for laminated glass comprising an adhesive resin, wherein the average particle diameter of tin-doped indium oxide and/or antimony-doped tin oxide is ranging from 0 to 80 nm, and the number of the tin-doped indium oxide or antimony-doped tin oxide particles with a particle diameter of not less than 100 nm are dispersed not more than 1 per 1 mum<2>, and also, by a laminated glass produced by interposing said interlayer film for laminated glass between at least a pair of glass sheets having a visible light transmittance rate (Tv) of not less than 65% in the light rays of 380 to 780 nm, a solar radiation transmittance rate (Ts) in the light rays of 300 to 2500 nm of not more than 80% of the mentioned visible light transmittance rate (Tv), the haze value (H) of up to 1.0% and electromagnetic wave shield (DeltadB) of not more than 11 dB in the wavelength of 10 to 2000 MHz.

Technique for producing low viscosity octenylsuccinate starch by oxidation process

InactiveCN101407552AFine pasteHigh transparencyChemistrySodium metabisulfite
The invention discloses a technique for producing octenyl succinate starch ester with low viscosity by an oxidation method, which comprises steps as follows: waxy rice starch and water are prepared to be starch milk in a reaction vessel, then the starch milk is heated to 34 DEG C to 38 DEG C, and a sodium hydroxide solution is added for adjusting the PH value between 9.3 and 9.7; sodium hypochlorite is added to carry out oxidation reaction, and the PH value and the reaction temperature are kept; sodium pyrosulfite is added to carry out reduction reaction, and a hydrochloride solution is added in the reaction process to adjust the PH value of the starch milk between 8.5 and 9.0, and the temperature is cooled to 28 DEG C to 31 DEG C, and then octenyl succinic anhydride with 2 percent to 3 percent of the total mass of absolute dry starch is added to carry out esterification reaction; and after the esterification reaction, the hydrochloride solution is added to neutralize the PH value of the starch milk between 5.5 and 6.5, and the finished product can be obtained by washing and drying the neutralized starch milk. By adopting the technique for producing the octenyl succinate starch ester with low viscosity by the oxidation method, the product is high in esterification reaction efficiency, good in emulsifying properties and high in product quality.

Polypropylene composition and preparation method thereof

The invention belongs to the field of polyolefin resin materials, and particularly relates to a polypropylene composition and a preparation method thereof. The polypropylene composition comprises the following raw materials in part by weight: 100 parts of a polypropylene resin random copolymer, 0.05-0.3 part of an anti-oxidant, 0.06-0.4 part of a nucleating agent A, 0.04-0.3 part of a nucleating agent B, 0.02-0.1 part of an acid acceptor and 0.02-0.08 part of an antistatic agent. According to the preparation method, a high-fluidity polypropylene random copolymer, which is obtained according to the hydrogen regulation method, is used as the basis resin; additives, such as the anti-oxidant, the acid acceptor, the antistatic agent, the nucleating agent A and the nucleating agent B, are added into the basis resin; after the basis resin and the additives are uniformly mixed by a high-speed stirring machine, the high-fluidity high-transparency polypropylene composition is obtained through double-screw extrusion pelletizing. The polypropylene composition is excellent in comprehensive performance, high in transparency and fluidity, resistant to warpage, and superior to a product of the degradation method in the aspects of appearance, color, lustre and smell. Therefore, the polypropylene composition can be applied to a large-scale transparent product and a complicated thin-wall product, and the warpage phenomenon during the production can be effectively avoided.

Green and energy-saving fluorescent powder/glass compound luminous material and preparation method thereof

InactiveCN102464450ASimple preparation processHigh transparencyAfterglowPhosphate glass
The invention discloses a green and energy-saving fluorescent powder/glass compound luminous material and a preparation method thereof. The green and energy-saving fluorescent powder/glass compound luminous material is long-afterglow luminous glass formed by mixing and fusing long-afterglow fluorescent powder and phosphate glass powder, and has the characteristics of no lead, no radioactivity, low melting point, energy saving, weather fastness, low-temperature molding, stability of lighting, long afterglow and the like. The preparation method comprises the following steps of: (a) preparing low-melting-point phosphate matrix glass; (b) powdering the matrix glass and mixing the matrix glass and long-afterglow fluorescent powder with a certain mass percentage; (c) blocking the powder; and (d) melting the powdered blocks at a certain temperature, annealing and cooling. The compound luminous material can emit light with a certain color after being irradiated by visible light or ultraviolet light, so that the luminous performance of the long-afterglow fluorescent powder is retained. The compound luminous material serving as a novel material can be widely used in the fields of buildings, energy saving, airspace, emergency lighting, night displaying, artistic handicrafts and the like.
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