摘要
通过实验,探索了乙二醇锑用量对聚氨酯R IM弹性体合成工艺、性能及结构的影响,找出了其用量对聚氨酯R IM弹性体的影响规律。结果表明:乙二醇锑对聚氨酯体系有很好的催化活性;随乙二醇锑用量的增加,制品的密度和硬度明显增大,拉伸强度上升较快,而断裂伸长率先增加至峰值210%,随后下降;XRD分析表明:由R IM法制备的PUE/乙二醇锑复合材料中,乙二醇锑可呈纳米状态高度均匀分散于PUE基体中。这一结论为进一步研究聚氨酯R IM弹性体/乙二醇锑复合材料打下了基础。
The effect of the ethylene glycol antimony quantity on the synthetic processing, physics properties and microstructure of RIM-PUE/ethylene glycol antimony composites were studied by experiments. The effect rule of ethylene glycol antimony quantity on RIM-PUE composites was found. The result showed that ethylene glycol antimony had very good catalytic activity in the polyurethane system;the density and hardness of RIM-PUE/ethylene glycol antimony composites increased obviously with the increasing of ethylene glycol antimony quantity,while the tensile strength increased quicker, but the elongation at break firstly decreased remarkably and reached the maximum 210% at 2.5wt% ,then the elongation at break decreased;the results of XRD showed that,in RIM-PUE/ethylene glycol antimony composites by RIM method,ethylene glycol antimony which was presented in nanometer state and could be evenly dispersed very well in PUE matrix. A base was laid for further development of RIM-PUE/ethylene glycol antimony composites.
出处
《塑料》
CAS
CSCD
北大核心
2008年第1期74-77,共4页
Plastics
基金
河南省高等学校青年骨干资助计划项目(豫教高〔2005〕451号)
