STUDY ON THE REINFORCED AND TOUGHENED PP BLENDS WITH THE RIGID NANO PARTICLES AND THE ELASTIC RUBBER-PARTICLES

WU Wei; XU Zhongde

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STUDY ON THE REINFORCED AND TOUGHENED PP BLENDS WITH THE RIGID NANO PARTICLES AND THE ELASTIC RUBBER-PARTICLES

Research Article | 更新时间：2021-03-19

- STUDY ON THE REINFORCED AND TOUGHENED PP BLENDS WITH THE RIGID NANO PARTICLES AND THE ELASTIC RUBBER-PARTICLES
- Acta Polymerica Sinica Issue 1, Pages: 99-104(2000)
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- Published：20 February 2000，
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WU Wei, XU Zhongde. STUDY ON THE REINFORCED AND TOUGHENED PP BLENDS WITH THE RIGID NANO PARTICLES AND THE ELASTIC RUBBER-PARTICLES. [J]. Acta Polymerica Sinica (1):99-104(2000)
DOI：

WU Wei, XU Zhongde. STUDY ON THE REINFORCED AND TOUGHENED PP BLENDS WITH THE RIGID NANO PARTICLES AND THE ELASTIC RUBBER-PARTICLES. [J]. Acta Polymerica Sinica (1):99-104(2000) DOI：

摘要

通过力学性能测试、动态力学试验、ＤＳＣ分析以及材料断面形貌与结构分析等手段

对以纳米二氧化硅（ＳｉＯ２）为刚性微粒、以三元乙丙橡胶（ＥＰＤＭ）为弹性微粒组成的聚丙烯（ＰＰ）／纳米ＳｉＯ２／ＥＰＤＭ的同时增强增韧效果进行了研究．结果显示

上述两种微粒可同时大幅度提高ＰＰ的韧性、强度和模量

当ＰＰ／纳米ＳｉＯ２／ＥＰＤＭ为８０／３／２０时

两种微粒体现较明显的协同增韧效应．纳米ＳｉＯ２可提高ＰＰ的结晶温度和结晶速度

并使球晶细化．纳米ＳｉＯ２刚性微粒在ＰＰ连续相中以微粒团聚体形态分布

构成团聚体的平均微粒数约为６～７

其与ＰＰ基体表现出较强的结合牢度．ＰＰ／纳米ＳｉＯ２／ＥＰＤＭ的综合性能已接近或达到工程塑料的性能．

Abstract

The reinforcing and toughening effects of PP blends were studied by the determination of the mechanical properties

dynamic mechanical analysis

DSC

as well as morphology and structures of the cross-sections

which were reinforced by nano-SiO2 rigid particles and toughened by EPDM elastic particles. It was shown that

the above two particles dispersed in PP matrix can increase not only the tougheness but also the strength and the modulus of PP at a great extent. As the blend ratio of PP/nano-SiO2/EPDM is 80/3/20

the two particles have the concerted toughening effect.Nano-SiO2 particles can also increase the crystallization temprature and crystallization rate of PP and decrease its size of spherulite. Nano-SiO2 particles are dispersed in the PP continuous phase in the form of conglomerates which are made up of 6～7 nano-SiO2 particles in average and have a good combination strength with PP matrix. The comprehensive properties of the PP/nano-SiO2/EPDM can match with the engineering plastics.

关键词

聚丙烯纳米橡胶刚性微粒弹性微粒增强增韧

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Key Laboratory for Ultrafine Materials of Ministry of Education, East China University of Science and Technology

1,2),GAO Xueqin~2,YUAN Yi~2,SHEN Kaizhi~2

四川大学高分子科学与工程学院高分子材料工程国家重点实验室

四川大学高分子科学与工程学院高分子材料工程国家重点实验室成都

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