photodegradation of polypropylene film 聚丙烯薄膜光降解
blends of polypropylene 聚丙烯共混物
composites of polypropylene 改性聚丙烯复合材料
isotacticity of polypropylene 聚丙烯等规度
Microstructure of polypropylene 聚丙烯微结构
extent of polypropylene degradation 聚丙烯降解程度
low amount of polypropylene fiber 低掺量聚丙烯纤维
modification of polypropylene surface 聚丙烯表面改性
The properties of polypropylene(PP) by equal channel angular extrusion(ECAE) processing were investigated.
研究了模压成型聚丙烯（ PP）经等通道转角挤压（ ECAE）加工后的性能。
They also produce "hybrid" resins of polypropylene that are stronger and more durable, for use in cars or children's toys.
他们还生产聚丙烯“混合”树脂。这种产品更坚固耐用，适用于汽车或儿童玩具。
Creating plastics that are biodegradable is important, Scheer says, because just 3.5 per cent of polypropylene plastic in the United States gets recycled.
舍尔说，生产生物可降解塑料很重要，因为在美国，只有3.5%聚丙烯塑料得到回收利用。
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