Regenerative Recycling of Automotive Polymer Components: Poly(propylene) Based Car Bumpers
Regenerative Recycling of Automotive Polymer Components: Poly(propylene) Based Car Bumpers
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DOI：
10.1002/mame.200300001
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发表时间：
2003-08
影响因子：
3.9
通讯作者：
M. Luda;G. Ragosta;P. Musto;D. Acierno;L. Maio;G. Camino;V. Nepote
中科院分区：
文献类型：
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作者：
M. Luda;G. Ragosta;P. Musto;D. Acierno;L. Maio;G. Camino;V. Nepote
由聚丙烯基体（PP）和作为分散相的乙烯-丙烯橡胶共聚物制成的保险杠在首次使用寿命结束时机械性能有显著损失。在回收过程中使用特殊的添加剂大大提高了这些物品的机械性能。专门设计的添加剂含有再生剂和抗氧化剂系统。再循环过程的混合作用重新建立相相容性;抗氧化剂抑制氧化，这加速了再循环过程中的降解反应，最终再生剂加入具有合适反应基团的短链。这三种效应在恢复原始材料性能方面起着不同的作用，这取决于回收过程，例如，如果断链不是回收操作中的主要过程，并且橡胶和基体之间的界面粘附不能自动确保冲击条件下的韧性机械行为，则再生剂可能几乎无用。
There is a dramatic loss in the mechanical performances at the end of the first life application of bumpers made by a poly(propylene) matrix (PP) and an ethylene-propylene rubber copolymer as dispersed phase. The use of specitic additives during the recycling strongly enhances the mechanical properties of these items. The on purpose designed additive contained a regenerative agent and an antioxidant system. The mixing action of the recycling process re-establishes the phase compatibility; the antioxidants inhibit oxidation, which speeds up the degradation reactions in the recycling process, eventually the regenerative agent joins short chains possessing sutitable reactive groups. These three effects play a different role in restoring original material performance in dependence of the recycling process for instance the regenerative agent may be nearly useless if chain scission is not the dominant process in the recycling operation and the interfacial adbesion between rubber and the matrix does not assure automatically a ductile mechanical behaviour under impact conditions.