Halogen-free and flame-retardant hard polyurethane foam plastic and preparation method thereof
A technology of rigid polyurethane and foamed plastics, which is applied in the field of foamed plastics, can solve problems not related to the flame retardancy of rigid polyurethane foamed plastics, and achieve the effects of good flame retardancy, excellent heat preservation and wide application range of phosphorus, nitrogen and silicon synergistically
Active Publication Date: 2012-07-18
XIAMEN UNIV
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The invention discloses halogen-free and flame-retardant hard polyurethane foam plastic and a preparation method thereof, relating to foam plastic. Raw materials include polyether polyol 4110, polymethylene polyphenyl isocyanate, a tertiary amine catalyst, dibutyltin dilaurate, a silicon-carbon bond foam stabilizer, 2,4,6-tri(dimethylaminomethyl)phenol, a foaming agent, octa-(3-hydroxyl-3-methyl butyl dimethylsiloxy)silsesquioxane, dimethyl methylphosphonate and micron-sized alpha-alumina trihydrate. The method comprises the following steps of: mixing the polyether polyol 4110, tertiary aminecatalyst, dibutyltin dilaurate, silicon-carbon bond foam stabilizer, 2,4,6-tri(dimethylaminomethyl)phenol, foaming agent, octa-(3-hydroxyl-3-methyl butyl dimethylsiloxy)silsesquioxane and micron-sized alpha-alumina trihydrate to obtain A; adding the dimethyl methylphosphonate into A to obtain B; and adding the polymethylene polyphenyl isocyanate into B, pouring into a mold for foaming, curing anddemolding to obtain the halogen-free and flame-retardant hard polyurethane foam plastic.
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Property | Measurement | Unit |
Apparent density | 56.6 ~ 62.7 | kg/m³ |
Tensile strength | 400.0 ~ 570.0 | kPa |
Thermal conductivity | 0.021 | W/k/m |
tensile | MPa | |
Particle size | Pa | |
strength | 10 |
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