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首页> 外文会议>Global Symposium on Recycling, Waste Treatment and Clean Technology; 20040926-29; Madrid(ES) >REACTIVE COMPATIBILISATION OF POST CONSUMER PLASTICS WASTE
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REACTIVE COMPATIBILISATION OF POST CONSUMER PLASTICS WASTE

机译：消费后塑料废料的反应性相容

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摘要

The problem of separation of the polyolefin faction of post-consumer plastics waste can be overcome by reactive compatibilisation. In this study reactive compatibilisation was achieved using 1,3-phenylene dimaleimide, where under optimum conditions a 40 % improvement in the tensile strength of post consumer LDPE (53 %), PP (23 %), HDPE (24 %) [all w/w] blend was realised, relative to an uncompatibilised control. The predominant mechanism of this effect was related to the tetra-functionality of BMI to macroradicals, this compensated for the degradation related loss in molar mass and served to knit the dissimilar polymeric phases together. Addition of 60 % w/w magnesium hydroxide during reactive compatibilisation gave rise to more than double the relative improvement in tensile strength than when unfilled, such that the tensile strength of the compatibilised composite approached that of unfilled virgin PP. This substantial improvement in tensile strength was due to the efficient production of macroradicals during mastication of the highly filled melt, together with the high reactivity of the maleimide double bonds and the ability of BMI to strongly adsorb onto the filler surface. In summary the filled blends, in particular, could potentially form a new class of environmentally viable flame retardant materials, when considered from both zero halogen and materials recovery aspects.
机译：消费后塑料废料中聚烯烃成分的分离问题可以通过反应性相容性解决。在这项研究中，使用1,3-亚苯基二马来酰亚胺实现了反应性增容，在最佳条件下，消费后LDPE（53％），PP（23％），HDPE（24％）的拉伸强度提高了40％。 / w]实现了相对于不相容的对照。这种作用的主要机理与BMI对自由基的四官能度有关，这补偿了摩尔质量与降解有关的损失，并有助于将不同的聚合物相编织在一起。在反应性增容过程中添加60％w / w的氢氧化镁，其抗拉强度的相对提高是未填充时的两倍，因此增容复合材料的抗张强度接近未填充纯PP的抗张强度。拉伸强度的显着提高是由于在高填充熔体的咀嚼过程中有效生成了自由基，以及马来酰亚胺双键的高反应性以及BMI能够强烈吸附到填料表面上。总之，从零卤素和材料回收两个方面考虑，特别是填充的共混物有可能形成一类新型的环保阻燃材料。

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