ATPU和蒙脱土复合增强不饱和聚酯的研究

用插层聚合法制备了不饱和聚酯（UPR）／丙烯酸酯封端聚氨酯（ATPU）／改性蒙脱土（OMMT）复合材料，探讨了ATPU和OMMT对复合材料的性能和形态的影响。结果表明，随着ATPU用量的增加，复合材料的冲击强度迅速提高，但复合材料的拉伸强度、弯曲强度、巴氏硬度和热变形温度降低；当OMMT少于质量分数3％时，UPR的冲击强度、拉伸强度和弯曲强度随OMMT用量的增大而提高，超过质量分数3％时，复合材料的冲击强度、拉伸强度和弯曲强度都下降。当OMMT和ATPU的用量分别为质量分数3％和15％时，拉伸强度提高约50％，而冲击强度和弯曲强度分别提高约8．6％和10．3％，热变形温度提高了12．5℃，收缩率降低了78％。

Study of ATPU/MMT Reinforced Unsaturated Polyester

Unsaturated polyester resin (UPR) /acrylate-terminated polyurethane (ATPU) /modified montmorillonite composites were prepared via intercalation polymerization. The effects of ATPU, OMMT and their combination on the properties and morphology of the composites were investigated. It showed that an increase of the concentration of ATPU in the composites resulted in a noticeable increase in the impact strength of the obtained composites, but a drop in the tensile strength, flexural strength and Barcol hardness. The impact strength, tensile strength, and flexural strength of the composites increased with increasing OMMT content up to 3 wt% , and decreased above that content. When 15 wt% of ATPU combined with 3 wt % of OMMT, the tensile, impact and flexural strengths of the composites increased by about 50 % , 8.6 % , and 10.3 % , respectively.