松香聚氨酯弹性密封胶的生产性试验研究

就松香聚氨酯弹性密封胶的合成生产过程的一些问题和因素、反应机理进行探讨和分析，找出了松香、聚 氨酯各部分对高聚物的影响，发现在高聚合物物理性能上，改性松香部分能提高聚合物的硬度和弹性，聚氨酯部分可提高其粘接性能，试验也探讨了影响固化速度的因素及环境介质对密度胶的影响，并进行了最佳填料及填料最佳配比的选择，从而为进一步改进生产 优化配比提供了依据。

RESEARCH ON SYNTHESIS AND PRODUCTION OF ROSIN POLYURETHANE ELASTIC SEALANT

In this paper, the synthesis and production of rosin polyurethane elastic sealant are reported, also some problems and affecting factors of the process are discussed. It is found that modified rosin may increase the elasticity and hardness of the polymer while polyurethane may increase its adhesion. Affecting factors on the sealant are also discussed. Moreover, the best filler and the optimum ratio of filler are chosen. This paper provides scientific basis for improving and optimizing the process in the production.