车用低散发聚氨酯泡沫性能研究及改善

Research and Improvement on Low Emission Polyurethane Foam for Vehicle

使用低散发反应型胺类催化剂改善泡沫散发性能会导致泡沫耐湿热老化性能下降。通过抗老化剂、高活性催化剂替代、添加高官能度交联剂和调整异氰酸指数等措施探究了泡沫耐湿热老化性能下降原因及改善效果。结果表明添加抗老化剂、高活性催化剂替代和提高异氰酸指数可以有效改善低散发反应胺类催化剂带来的湿热老化后力学性能下降问题。

The use of low-emission reactive amine catalysts to improve the foam emission performance will lead to the decline of the foam’s resistance to heat and humidity aging. Through measures such as anti-aging agent, highactivity catalyst replacement, adding high-functionality cross-linking agent and adjusting the isocyanate index, the reasons for the decline of the foam’s moisture-heat aging resistance and the improvement effect were explored. The results show that adding anti-aging agent, replacing high-activity catalyst and increasing isocyanate index can effectively improve the problem of mechanical properties decline after damp heat aging caused by low emission reactive amine catalyst.