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680results about How to "Improve rigidity" patented technology

Stain-resistant heat-insulation coating and preparation method thereof

The invention discloses a special electric stain-resistant heat insulation coating. The special electric stain-resistant heat insulation coating comprises the following components in parts by weight: 15-50 parts of a film formation emulsion, 5-30 parts of nano oxide powder, 10-20 parts of heat reflection pigment, 5-25 parts of hollow ceramic microbeads, 8-15 parts of a filler, 5-15 parts of additives and a proper amount of deionized water. The purposes of resisting stains and insulating heat can be achieved by introducing components such as nano oxide powder into the heat insulation coating. The invention also discloses a preparation method of the stain-resistant heat insulation coating. The preparation method of the stain-resistant heat insulation coating comprises the following steps: adding deionized water, part of the additives, the nano oxide powder, the hollow ceramic microbeads, the heat reflection pigment and filler into a grinder for grinding to obtain slurry; transferring the prepared slurry into a dispersing machine, adding the film formation emulsion and the rest of additives into the slurry, stirring and dispersing the slurry, filtering the slurry by a screen to obtain the stain-resistant heat insulation coating. The preparation method of the stain-resistant heat insulation coating is simple in process, easy to implement and simple and convenient to operate.
Owner:STATE GRID CORP OF CHINA +3

Matte BOPP (Biaxially-oriented Polypropylene) film for leather transferring and preparation method thereof

ActiveCN103709517AImprove rigidityIncrease the stretch ratioSynthetic resin layered productsCoatingsAnti adhesivePolypropylene
The invention relates to a matte BOPP (Biaxially-oriented Polypropylene) film for leather transferring and a preparation method thereof. The matte BOPP film consists of an inner surface layer, a core layer and an outer surface layer, and is prepared by coextrusion and two-way stretching of the inner surface layer, the core layer and the outer surface, wherein the inner surface layer comprises the following components in percentage by weight: 97.5-98.5% of polypropylene and 1.5-2.5% of adhesive; the core layer comprises the following components in percentage by weight: 98.0-98.4% of polypropylene, 1.0-1.2% of antistatic agent and 0.4-1.0% of slipping agent; the outer surface layer adopts a delustering material which comprises the following components in percentage by weight: 54-56% of polyethylene, 43.7-45.7% of high-density polyethylene and 0.3% of antioxidant. The matte BOPP film and the preparation method have the advantages that the selection and matching of the materials are reasonable, the selected polypropylene material is good in processing performance and high in mechanical strength; the prepared BOPP film is large in elastic modulus and low in heat shrinkage rate; the performance indexes such as haze and glossiness of the outer surface layer are excellent.
Owner:ZHEJIANG KINLEAD PACKAGING MATERIAL

Halogen-free flame-retardant two-component polyurethane adhesive for railway vehicle and preparation method thereof

The invention provides a halogen-free flame-retardant two-component polyurethane adhesive for a railway vehicle and a preparation method thereof, belonging to the technical field of two-component polyurethane adhesives. The main objective of the invention is to overcome problems in bonding of the structures of the bodies of a high-speed railway carriage and a rail transit vehicle. The polyurethane adhesive mainly a component A and a component B, wherein the component A and the component B are in a weight ratio of 6: 1, the component A comprises, by weight, 10 to 35% of castor oil polyol, 10 to 40% of polyester polyol, 5 to 30% of bisphenol A polyether polyol, 5 to 25% of a flame-retardant plasticizer, 30 to 60% of a flame-retardant inorganic filling material, 0.5 to 3% of a coupling agent and 0.1 to 0.5% of a catalyst, and the component B is an isocyanate curing agent containing liquefied methyl diphenylene diisocyanate. The polyurethane adhesive has the characteristics of good flame retardation effect, environment friendliness, good bonding strength after curing and good toughness and is mainly applied to self-adhesion and mutual adhesion of materials like metals and timber of the bodies of railway vehicles.
Owner:HUBEI HUITIAN NEW MATERIALS STOCK CO LTD +1
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