| 轮胎胶应力诱导脱硫及对聚丙烯的增韧作用 |
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| 引用本文： | 陈显旺,许治昕,张云灿.轮胎胶应力诱导脱硫及对聚丙烯的增韧作用[J].高分子材料科学与工程,2010(2):91-94. |
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| 作者姓名： | 陈显旺 许治昕 张云灿 |
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| 作者单位： | 南京工业大学材料科学与工程学院; |
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| 基金项目： | 材料科学与工程江苏省重点实验室资助课题 |
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| 摘 要： | 在轮胎胶粉的熔融挤出过程中添加线型高分子材料作为溶胀剂和承载流体,并通过提高双螺杆挤出机转速的高剪切应力诱导方法,研究了螺杆转速和挤出反应温度对轮胎胶脱硫共混物凝胶含量、熔体流动速率、溶胶特性黏数及红外光谱(FT-IR)的影响。结果表明,双螺杆挤出机的高剪切应力可诱发轮胎胶颗粒中交联网络的断链反应和氧化降解作用,引起脱硫共混物凝胶含量的明显下降、熔体流动速率的明显增加、溶胶特性黏数的明显减小及溶胶分子链中碳碳双键和醚键基团明显增加。在最佳脱硫反应条件下,所得脱硫共混物可使聚丙烯(PP)(J430)材料的缺口冲击强度由10.5kJ/m2提高至47.7kJ/m2。
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| 关 键 词： | 轮胎胶 应力诱导脱硫 乙烯-辛烯共聚物 聚丙烯 增韧 |
Devulcanization of Ground Tire Rubber through High Stress-Induced Reaction and Its Application in Toughening Polypropylene |
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| CHEN Xian-wang,XU Zhi-xin,ZHANG Yun-can.Devulcanization of Ground Tire Rubber through High Stress-Induced Reaction and Its Application in Toughening Polypropylene[J].Polymer Materials Science & Engineering,2010(2):91-94. |
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| Authors: | CHEN Xian-wang XU Zhi-xin ZHANG Yun-can |
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| Affiliation: | College of Material Science and Engineering;Nanjing University of Technology;Nanjing 210009;China |
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| Abstract: | The effects of screw rotation speed of twin screw extruder and extrusion temperature on the gel content, melt flow rate of the devulcanized ground tire rubber(DGTR), and the intrinsic viscosity and fourier transform infrared spectra (FT-IR) of the sol of the blends were investigated by adding some thermoplastic material as bearing fluid during extrusion. The results show that high shear stress of the extruder can induce chain scission and oxidative degradation of the cross-linking network of the ground tire... |
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| Keywords: | ground tire rubber stress-induced devulcanization polyoctene ethylene polypropylene toughening |
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