Polyurethane coated flame-retardant sealing rubber strip with high production efficiency and preparation method
The invention discloses a polyurethane coated flame-retardant sealing rubber strip with high production efficiency and a preparation method, and belongs to the technical field of sealing elements. The product comprises a first component and a second component, and the mass ratio of the first compone...
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| creator | XU SHILIN XU DAIBIN ZHONG XIAOFANG |
| description | The invention discloses a polyurethane coated flame-retardant sealing rubber strip with high production efficiency and a preparation method, and belongs to the technical field of sealing elements. The product comprises a first component and a second component, and the mass ratio of the first component to the second component is (0.4-0.8): 1; the first component is diisocyanate, and the second component comprises the following raw materials in parts by weight: 0.5-5 parts of an auxiliary agent, 1-5 parts of a foaming agent, 70-90 parts of polyether polyol, 1-5 parts of amino resin, 0.5-2 parts of a catalyst and 2-25 parts of a flame retardant. The preparation method comprises the following steps: mixing the first component and the second component in proportion, foaming, injecting into a mold, and molding to obtain a finished product. The preparation method disclosed by the invention has the advantages of high reaction speed and high product strength; and the preparation method disclosed by the invention has t |
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The product comprises a first component and a second component, and the mass ratio of the first component to the second component is (0.4-0.8): 1; the first component is diisocyanate, and the second component comprises the following raw materials in parts by weight: 0.5-5 parts of an auxiliary agent, 1-5 parts of a foaming agent, 70-90 parts of polyether polyol, 1-5 parts of amino resin, 0.5-2 parts of a catalyst and 2-25 parts of a flame retardant. The preparation method comprises the following steps: mixing the first component and the second component in proportion, foaming, injecting into a mold, and molding to obtain a finished product. 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| subjects | AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G CHEMISTRY COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS GENERAL PROCESSES OF COMPOUNDING MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-UP WORKING-UP |
| title | Polyurethane coated flame-retardant sealing rubber strip with high production efficiency and preparation method |
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