Low-temperature reaction type polyurethane composite thermal insulation material and preparation method thereof
The invention belongs to the field of polyurethane materials, and particularly relates to a low-temperature reaction type polyurethane composite thermal insulation material and a preparation method thereof. Comprising a component A and a component B. The component A comprises the following raw mater...
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Format: | Patent |
Sprache: | chi ; eng |
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Zusammenfassung: | The invention belongs to the field of polyurethane materials, and particularly relates to a low-temperature reaction type polyurethane composite thermal insulation material and a preparation method thereof. Comprising a component A and a component B. The component A comprises the following raw materials by weight: 15-25 parts of a filler; 60-95 parts of liquid sodium silicate; 5 to 10 parts of water; 0.5 to 5 parts of a catalyst; the filler is prepared from the following raw materials: n-docosane, a silicon-based macroporous material, polycarbonate polyol, water, an anti-settling agent and concentrated sulfuric acid. The component B is prepared from the following raw materials in parts by weight: 100 parts of isocyanate prepolymer. The thermal insulation material is low in reaction temperature, good in toughness, small in released heat, low in heat conductivity coefficient and free of toxic volatile matter and corrosive matter, disturbance to plateau cold frozen soil can be reduced, and the requirement of pla |
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