Pentane combines advantageous physical and technical properties with good environmental data. As a blowing agent for polyurethane rigid foams, it is suitable for China market.
戊烷作为发泡剂具有良好的物理和工艺性能及合适的环境数据，适合于我国聚氨酯泡沫市场。
Another kind is thermoplastic polystyrene foamed plastic thermosetting and rigid polyurethane foams primarily organic heat preservation material, usually identified as combustible materials.
另一类是以热塑性聚苯乙烯泡沫塑料和热固性聚氨酯硬泡为主的有机保温材料，通常认定为可燃性材料。
The selection of blowing agent and the method of modifying fire retardance of rigid polyurethane foams were briefly introduced.
简要介绍硬质聚氨酯泡沫塑料的发泡剂选择和改进阻燃性的方法。
Approaches to improve flame retardation of rigid polyurethane foams are reviewed. The effects and features of some additive flameretardants and reactive flameretardants are introduced.
综述了提高硬质聚氨酯泡沫塑料阻燃性的方法，介绍了常用添加型阻燃剂的作用和特点以及常用的结构改性提高阻燃性的技术途径。
This thesis introduces the moulding technique, mechanical and thermal properties of the rigid polyurethane foams used in cryogenic insulation.
本文介绍低温绝热用硬质聚氨酯泡沫塑料的力学、热学性质及其成型工艺。
The aging mechanism of rigid polyurethane foams at indoor storage conditions was investigated with indoor storage tests, accelerated hygrothermal aging tests and IR spectra.
采用室内贮存试验、人工加速湿热老化试验和红外光谱法研究了硬质聚氨酯泡沫塑料在室内贮存条件下的老化机理。
The aging mechanism of rigid polyurethane foams at indoor storage conditions was investigated with indoor storage tests, accelerated hygrothermal aging tests and IR spectra.
采用室内贮存试验、人工加速湿热老化试验和红外光谱法研究了硬质聚氨酯泡沫塑料在室内贮存条件下的老化机理。
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