| 疏红扬,季承远,韩田琛,王新.热塑性聚氨酯/甲基乙烯基硅橡胶共混物性能的研究[J].橡胶科技,2019,17(1):0016-0020. |
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| 热塑性聚氨酯/甲基乙烯基硅橡胶共混物性能的研究 |
| Properties of Thermoplastic Polyurethane/Methyl Vinyl Silicone Rubber Blends |
| 投稿时间：2018-04-10 修订日期：2018-04-10 |
| DOI：10.12137/j.issn.2095-5448.2019.01.0016 |
| 中文关键词: 硅橡胶 热塑性聚氨酯 共混物 增容剂 拉伸性能 |
| 英文关键词: silicone rubber thermoplastic polyurethane blends compatibilizer tensile property |
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| 中文摘要: |
| 研究热塑性聚氨酯（TPU）/甲基乙烯基硅橡胶（VMQ）共混物的性能。结果表明：未添加增容剂时，随着VMQ用量的增大，TPU/VMQ共混物的拉伸强度和拉断伸长率逐渐减小，共混物表面的接触角逐渐减小，固相表面张力逐渐增大；在TPU/VMQ共混物中添加增容剂A（含硅聚氨酯）或B（硅丙接枝共聚物），共混物的拉伸性能得到一定程度的提升；增容剂A和B的用量分别为6和4份时，共混物的拉伸性能达到最佳；在一定范围内，随着增容剂用量的增大，在TPU中分散的VMQ粒子的粒径减小，两相相容性改善。 |
| 英文摘要: |
| The properties of thermoplastic polyurethane（TPU）/methyl vinyl silicone rubber（VMQ） blends were studied. The results showed that，without compatibilizer，when the amount of VMQ increased， the tensile strength and elongation at break of TPU/VMQ blends gradually decreased，the contact angle on the surface of TPU/VMQ blends decreased，and the surface tension on the solid phase increased. The tensile properties of TPU/VMQ blends were improved to some extent by adding compatibilizer A（silicon-containing polyurethane） or B（silicon-propyl graft copolymer）. The tensile properties of TPU/VMQ blends were the best when the amount of compatibilizer A was 6 phr，or the amount of compatibilizer B was 4 phr. Within a certain range，with the increase of the amount of compatibilizer，the size of VMQ particles dispersed in TPU was reduced，and the compatibility of the two phases was improved. |
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