【摘要】 在四川"5·12"抗震救灾期间,地震灾区共建设板房62.5×104套,其中成都约有19×104套。按照灾后恢复重建和城市建设规划,数十万套活动板房将逐步拆除或回收利用,为了有效地回收利用板房夹层泡沫聚苯乙烯,以苯乙烯-丁二烯-苯乙烯嵌段共聚物(SBS)作为增容剂,通过乙烯-辛烯共聚物(POE)和不同分子量的高密度聚乙烯(HDPE)来协同增韧回收废旧聚苯乙烯(rPS)。通过rPS/POE/HDPE/SBS四元体系制得的废旧PS复合材料的冲击强度为12.6kJ/m2,拉伸强度为25.2MPa,可以替代高抗冲聚苯乙烯(HIPS)使用,具有很好的经济效益和环境效益。通过添加复配抗老化配方,复合材料的抗紫外老化和抗热氧老化性能均得到提高,大大延长了复合材料的使用寿命。更多还原

【Abstract】 The portable shelter which mainly contained the foam of Polystyrene(PS) should be recycled after earthquake.In order to make the recycled polystyrene(rPS) useful,rPS was toughened with ethylene-octylene copolymer thermoplastic elastomer(POE) and high-density polyethylene(HDPE),and compatibilized with styrene-butadiene-styrene copolymer(SBS) to enhance its toughness.The prepared blend showed an impact strength of 12.6 kJ /m2 and a tensile strength of 25.2 MPa,which can be well used to substitute HIPS since this system is economical and environmental friendly.The properties of composite for UV ageing resistance and thermal and oxygenic ageing resistance were both improved after the addition of complex ageing resistance agent,which will prolong the using time of the composite parts.更多还原