In the present work, we developed a green and more efficient method to prepare biobased polyurethane (PU) foams under catalyst-free condition. Firstly, novel organosilicon grafting cardanol-based autocatalytic polyols (SCAPs) with low viscosity were synthesized through the ring opening of cardanol glycidyl ether (CGE) and the hydrosilation of unsaturated alkyl chain with heptamethyltrisiloxane (HMTS). Subsequently, PU foams were synthesized by SCAPs in absence of catalyst. The structure and properties of the PU foams were evaluated and discussed. In addition, the thermal degradation mechanism of PU foams was investigated by using a thermogravimetric analysis instrument coupled with fourier transform infrared and mass spectrometer (TG-FTIR-MS). The results showed that the PU foams had high compression strength and thermo-stability.

在当前的工作中，我们开发了一种绿色且更有效的方法来在无催化剂的条件下制备生物基聚氨酯（PU）泡沫。首先，通过腰果酚缩水甘油醚（CGE）的开环反应和不饱和烷基链与七甲基三硅氧烷（HMTS）的硅氢化反应，合成了低粘度的新型有机硅接枝腰果酚基自催化多元醇（SCAPs）。随后，在不存在催化剂的情况下通过SCAP合成PU泡沫。对聚氨酯泡沫的结构和性能进行了评估和讨论。此外，通过使用热重分析仪结合傅立叶变换红外和质谱仪（TG-FTIR-MS）研究了PU泡沫的热降解机理。结果表明，PU泡沫具有较高的压缩强度和热稳定性。