Synthesis and fire properties of rigid polyurethane foams made from a polyol derived from melamine and cardanol
Synthesis and fire properties of rigid polyurethane foams made from a polyol derived from melamine and cardanol
复制标题
由三聚氰胺和腰果酚衍生的多元醇制备的硬质聚氨酯泡沫的合成和防火性能
DOI：
10.1016/j.polymdegradstab.2014.08.009
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发表时间：
2014-12-01
影响因子：
5.9
通讯作者：
Zhou, Yonghong
中科院分区：
文献类型：
--
作者：
Zhang, Meng;Zhang, Jinwen;Zhou, Yonghong
以腰果酚和三聚氰胺为原料，采用两步法合成了曼尼希碱多元醇（MCMP）。首先，使腰果酚与多聚甲醛三聚氰胺和二乙醇胺反应以产生混合曼尼希碱，随后将其丙氧基化以得到MCMP。使用MCMP和多异氰酸酯制备硬质聚氨酯泡沫（RPUF）。研究了可膨胀石墨（EG）、聚磷酸铵（APP）和乙基磷酸二乙酯（DEEP）对RPUFs的阻燃性能、力学性能、热稳定性和形貌的影响。结果表明，三聚氰胺纳入MCMP分子结构的RPUF的热稳定性和阻燃性的增加。通过添加阻燃剂可以进一步提高泡沫的阻燃性。EG比APP和DEEP更有效地提高MCMP基RPUFs的极限氧指数。阻燃剂填充的RPUFs比未填充的泡沫具有更好的压缩强度、热稳定性、残炭量、热释放和烟雾排放。(C)2014爱思唯尔有限公司版权所有。
In this work, a melamine and cardanol-derived Mannich base polyol (MCMP) was synthesized via a two-step process. First, cardanol was allowed to react with paraformaldehyde melamine and diethanolamine to yield mixed Mannich bases which were subsequently propoxylated to give the MCMP. Rigid polyurethane foams (RPUFs) were prepared using MCMP and a polyisocyanate. Effects of expandable graphite (EG), ammonium polyphosphate (APP) and diethyl ethylphosphate (DEEP) on the flame retardancy, mechanical properties, thermal stability and morphology of the resultant RPUFs were studied. It was demonstrated that the melamine incorporated into the MCMP molecular structure increased the thermal stability and the flame retardancy of the RPUF. The fire resistance of the foam could be further enhanced by the addition of flame retardants. EG is more effective than APP and DEEP in enhancing the limiting oxygen index of MCMP-based RPUFs. The flame-retardant-filled RPUFs display a better compressive strength, thermal stability, char residue, heat release and smoke emission than does the non-filled foams. (C) 2014 Elsevier Ltd. All rights reserved.