| 废旧胶粉/聚丙烯/环氧树脂复合材料结构和性能的研究 |
| Study on the Structure and Properties of Waste Rubber Powder/Polypropylene/Epoxy Resin Composites |
| 投稿时间：2018-09-11 修订日期：2018-09-11 |
| DOI：10.12136/j.issn.1000-890X.2019.07.0499 |
| 中文关键词: 废旧胶粉 聚丙烯 环氧树脂 复合材料 互穿网络结构 拉伸性能 |
| 英文关键词: waste rubber powder polypropylene epoxy resin composite interpenetrating network structure tensile property |
| 基金项目: |
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| 摘要点击次数: 1031 |
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| 中文摘要: |
| 制备废旧胎面胶粉（WRP）/聚丙烯（PP）/环氧树脂（EP）复合材料，并研究EP用量对复合材料结构和性能的影响。结果表明，EP的交联网络与WRP分子链形成互穿网络结构，增大了WRP/PP/EP复合材料的交联程度。随着EP用量的增大，WRP/PP/EP复合材料的拉伸强度和拉断伸长率先增大后减小，在EP用量为0.3份时达到最大值；熔体流动速率降低；凝胶质量分数增大。添加EP后，WRP相与PP相的玻璃化温度逐渐接近，两者的相容性提高；WRP相的热质量损失速率减小，PP相的热质量损失速率增大；复合材料的断面变得平滑，孔洞减少，界面相容性提高，EP用量为0.3份时WRP相与PP相的相容性最好。 |
| 英文摘要: |
| The waste tread rubber powder（WRP）/polypropylene（PP）/epoxy resin（EP）composite was prepared，and the effect of EP content on the structure and properties of the composites was studied.The results showed that，the crosslinking network of EP and WRP molecular chains formed an interpenetrating network structure，which enhanced the crosslinking degree of WRP/PP/EP composites.The tensile strength and elongation at break of WRP/PP/EP composites first increased and then decreased with the increase of EP content，and the optimum value was reached when the EP content was 0.3 phr.The melt flow rate decreased and the gel mass fraction of the composites increased with the increase of EP content.After adding EP，the glass transition temperatures of WRP and PP gradually approached，and the compatibility between them was improved.The thermal mass loss rate of WRP phase decreased while that of PP phase increased after adding EP，the cross section of the composites became smoothing，the voids were reduced，the interfacial compatibility was improved.When EP content was 0.3 phr，the compatibility of WRP phase and PP phase was the best. |
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