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合成橡胶工业 |
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合成橡胶工业 |
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Morphology study on elastomers reinforced by zinc dimethacrylate Ⅱ. In vulcanizates Lu Yonglai（Key Laboratory of New Polymer Preparation and
Processing,Beijing University of Chemical Technology,Beijing 100029,China） Abstract：The morphologies of
various ZDMA- reinforced elastomers(including BR,SBR,EPDM,NBR, EPM, POE and HNBR) were
studied by using SEM and TEM.It is shown that there are two essential dispersion
structures in the vulcanizates of these systems: nano- scale dispersion structure and
micron one.It is thought that nano- scale with strong reinforcing ability is formed by in-
situ polymerization during peroxide curing process; while micron one without reinforcement
for vulcanizates is the residual ZDMA particle.It is also found that the relative content
and size of this two dispersion structures varies from different compound systems.For BR
and SBR vulcanizates,there are more micron structures and the dimension of nano structure
one is relatively smaller than those of other system.For EPDM,NBR,EPR,POE and HNBR
vulcanizates,there is fewer microns structure and the dimension of nanometer one is larger
slightly.The effect of size of original ZDMA particles on morphology of vulcanizate was
also investigated.In POE system,ZDMA original particles with larger size lead to more
micron dispersion structures in vulcanizate.However,there is no considerable influence of
size of ZDMA particles on morphologies of EPDM,EPM,NBR and HNBR systems.The details for
the formation of these structures are illustrated.These differences in morphologies
directly impact on the mechanical properties of vulcanizates. 甲基丙烯酸锌增强弹性体的相态研究Ⅱ.硫化胶料 卢咏来 刘力 赵阳 张立群 摘 要：利用扫描电子显微镜(SEM)和透视电子显微镜(TEM)研究了甲基丙烯酸锌增强多种弹性体(包括BR,SBR,EPDM,NBR,EPM,POE和HNBR)的微观相态结构.发现在各体系的硫化胶料中均存在两类基本分散结构:纳米分散结构和微米分散结构.其中纳米增强结构是在胶料过氧化物交联过程中由ZDMA原位聚合生成的;而微米结构就是残余的ZDMA颗粒.这两种结构的尺寸及相对含量因不同的复合体系而不同.对于BR和SBR体系,其微米分散结构较其他体系更多,且纳米分散结构的尺寸相对略小.而在EPDM,NBR,EPM,POE,HNBR中,微米分散结构较少,且纳米分散结构的尺寸相对较大.还研究了ZDMA颗粒的原生尺寸对硫化胶料的相态结构的影响,发现在POE体系,较大的ZDMA原生尺寸将造成其硫化胶料中微米分散结构的大量增多;而EPDM,EPM,NBR,HNBR胶料的相态则对ZDMA原生尺寸的变化不敏感.硫化胶料的微观相态的差异必将对其物理机械性能产生直接的影响. |
| Foundation Item：Sponsored by the
National 9.5 Scientific Project(HG- 95- 08) and Beijing Scientific New Star Project(H
0101410010112). Author Resume：Lu Yonglai,doctoral student.Zhang Liqun，To whom all correspondence should be addressed. Author Unit：卢咏来（北京化工大学,北京市新聚合物制备和成型加工重点实验室,北京,100029） 刘力（北京化工大学,北京市新聚合物制备和成型加工重点实验室,北京,100029） 赵阳（北京化工大学,北京市新聚合物制备和成型加工重点实验室,北京,100029） 张立群（北京化工大学,北京市新聚合物制备和成型加工重点实验室,北京,100029） References： ［1］Lu Yonglai,Zhang Liqun,Liu Li,et
al. Morphology study on elastomers reinforced by zinc dimethacrylate vulcanizates[J].
China Synthetic Rubber Industry,2002,25(6):356
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Manuscript Received：2002年9月5日 Published：2003年1月15日 |
