Open-pore polyurethane rigid foam prepared from polyurethane rigid foam degradation liquid
A technology of rigid foam and polyurethane, which is applied in the field of open-cell polyurethane rigid foam, open-cell polyurethane rigid foam and its preparation, and can solve the problems of low density, environmental pollution of waste polyurethane rigid foam, high open cell rate, etc. Achieve the effects of low density, considerable economic benefits, and good sound-absorbing materials
Active Publication Date: 2015-02-18
NANJING HONGBAOLI POLYURETHANE
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Abstract
The invention relates to an open-pore polyurethane rigid foam prepared from a polyurethane rigid foam degradation liquid. The open-pore polyurethane rigid foam is prepared by reacting the polyurethane rigid foam degradation liquid, a polyhydric alcohol formula composition, a foaming agent and polyisocyanate, wherein the polyurethane rigid foam degradation liquid accounts for 0.1%-15% of the total weight of a material, the polyhydric alcohol formula composition accounts for 20%-52% of the total weight of the material, the foaming agent accounts for 0.3%-15% of the total weight of the material, and an isocyanate index is 70-140. According to the open-pore polyurethane rigid foam, the waste polyurethane rigid foam degradation liquid is firstly used for synthesizing the open-pore polyurethane foam with high aperture ratio and lower density, one the one hand, the problem of environmental pollution brought by a waste polyurethane rigid foam is solved, and on the other hand, the cost of raw materials is reduced, and considerable economic benefit is achieved. The prepared open-pore polyurethane rigid foam achieves the aperture ratio more than 70% and is low in density, thereby being a very good sound absorbing material used in building. The prepared open-pore polyurethane rigid foam is capable of providing an effective technical support for recycling the waste polyurethane rigid foam.
Technology Topic
IsocyanateChemistry +6
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PUM
Property | Measurement | Unit |
Hydroxyl value | 800.0 | mgKOH/g |
Viscosity | 500.0 | mPa·s |
Density | 17.0 | kg/m³ |
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