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50results about How to "Feel dry" patented technology

Preparation method of waterborne phosphorus-silicon flame-retardant polyurethane coating material

ActiveCN108059913AIncreased light transmittance of the coatingAddressing transparencyFireproof paintsHeat resistant fibresPolyesterCross-link
The invention discloses a preparation method of a waterborne phosphorus-silicon flame-retardant polyurethane coating material. The preparation method is characterized by comprising the following steps: adding 33-57 parts of anhydrous phosphorus-containing polyester polyol by mass, 10-29 parts of polydimethylsiloxane by mass and 5-15 parts of a solvent by mass into a reactor, uniformly stirring, adding 15-30 parts of diisocyanate by mass and 0.01-0.05 part of a catalyst by mass, heating to 60-90 DEG C, and reacting for 1-2h; adding 1-4 parts of a small molecular chain extender by mass, 2-8 parts of a hydrophilic chain extender by mass and 0.1-0.8 part of a cross-linking agent by mass, heating to 75-90 DEG C, reacting for 2-4h, cooling to room temperature, and adding a neutralizer to make pHto be 6-7; adding 1-4 parts of deionized water by mass, stirring into an emulsion, performing vacuum distillation to remove the solvent to obtain the waterborne phosphorus-silicon flame-retardant polyurethane coating material. The waterborne phosphorus-silicon flame-retardant polyurethane coating material is suitable to be used as a surface covering material for textiles, leather, wood and steelstructural buildings, and has high transparency and flexibility.
Owner:SICHUAN DONGFANG INSULATING MATERIAL

Production technology for orderly dacron bamboo node yarns of identical specification

The invention discloses a production technology for orderly dacron bamboo node yarns of identical specification. The production technology for the orderly dacron bamboo node yarns of identical specification is characterized in that the production technology comprises the following steps that (1) polyester raw materials are sliced and conveyed to a material wetting bin, and ventilation drying is carried out after pre-crystallization; (2) under the melting condition, slices enter a screw extrusion machine, and then enter a spinning box after filtration; (3) the slices enter a spinning assembly for filament production after being metered through a metering pump; (4) side air blasting cooling is carried out, and oil is applied; (5) traction, stretching and heat shaping are carried out; (6) winding and forming are carried out through a winding head, and products are formed. The identical-specification orderly dacron bamboo node yarns prepared through the production technology have super-linen-imitated and super-wool-imitated styles and effects of being moisture absorbable, breathable, dry and comfortable in hand feeling, full in touch sense and good in drapability and wearing comfortableness and the like, and have the advantages of having the super-linen-imitated and super-wool-imitated styles and effects and being good in function and performance, obvious in cost performance and the like.
Owner:ZHONGRUN SCI & TECH

Indoor-temperature foaming flame-retarding liquid silicone rubber with controllable specific gravity and preparing method and application thereof

The invention provides an indoor-temperature foaming flame-retarding liquid silicone rubber with controllable specific gravity and a preparing method and application thereof. The indoor-temperature foaming flame-retarding liquid silicone rubber with controllable specific gravity is prepared from 107 indoor-temperature vulcanization methyl silicone rubber, hydrogen-containing polysiloxane and a foaming-promoting agent; the foaming-promoting agent comprises a non-ionic surfactant. According to the indoor-temperature foaming flame-retarding liquid silicone rubber and the preparing method and application thereof, foaming silicone rubber is prepared through hydrosilylation between hydroxyl in the 107 indoor-temperature vulcanization methyl silicone rubber and the hydrogen-containing polysiloxane, the liquid non-ionic surfactant is adopted as the foaming-promoting agent, and by adjusting the use amount of a filler, the hydrogen-containing polysiloxane and the like and the proportion of a catalyst and an inhibitor, the specific gravity control over the foaming silicone rubber is achieved; the prepared foaming silicone rubber has a smooth and integral surface, and is dry and comfortable inhandfeel, the specific gravity is within the range of 0.2-0.6 g / cm<3>, the mechanical property is good, and the flame-retarding level reaches the UL94 V-0 level.
Owner:ZHEJIANG XINAN CHEM INDAL GROUP

Ethylene-ethylene acetate copolymer (EVA) refrigerator door seal particle and preparation method thereof

The invention discloses an ethylene-ethylene-vinyl acetate copolymer (EVA) refrigerator door seal particle which is composed of an EVA, polyethylene (PE), modified polyethylene, polypropylene (PP), modified polypropylene, an ethylene-olefin copolymer (POE), a mineral filler, a foaming agent, a nucleating agent, a lubricant, an antioxidant, a photoinitiator, a cross-linking agent, an antibacterial and mildew-proof agent, a pigment and the like. The invention further discloses a preparation method of the micro-foaming type EVA refrigerator door seal particles capable of being directly extruded. The preparation method comprises the steps of weighing, grinding, pre-crosslinking, mixing, banburying and extruding granulation. The material is ground and pre-crosslinked, and the foaming agent and the nucleating agent are added, so that when the material is used for producing the refrigerator door sealing strip, direct extrusion molding can be realized, high-temperature vulcanization and mold pressurization are not needed, and the micro-foaming refrigerator door sealing material can be prepared. The product is smooth in surface, contains a large number of microbubbles in the middle, and is high in material tearing strength, large in weld fillet tension, good in rebound resilience, resistant to low temperature, resistant to aging, good in sealing performance and good in heat preservation effect.
Owner:上海新上化高分子材料有限公司
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