聚磷酸铵对人造石材抛磨废料/三元乙丙橡胶复合物陶瓷化性能的影响

Effect of Ammonium Polyphosphate on the Ceramic Performance of Artificial-Stone Waste/EPDM Composites

人造石材在抛磨加工过程中会产生大量废料,废料直接填埋占用土地资源,容易造成环境污染。以人造石材抛磨废料为瓷化填料,制备可陶瓷化的人造石材抛磨废料/三元乙丙橡胶复合物,可实现固体废弃物资源再利用。研究聚磷酸铵(APP)用量对复合物力学性能、热稳定性及烧蚀所得陶瓷体的瓷化强度和微观结构的影响。结果表明,添加APP能提高陶瓷体的瓷化强度,当APP用量为80 phr时,冲击强度最高为0.44 kJ/m^(2),三点弯曲强度最高可达11 MPa。随APP用量增大,陶瓷体外观逐渐完整,表面凹坑减少,陶瓷体内部微观结构更为致密。

A large amount of solid waste can be generated in the process of polishing artificial-stone.Plenty of land is occupied,causing environmental pollution due to the landfill of artificial-stone waste.Consequently,ceramizable artificial-stone waste(ASW)/ethylene propylene diene rubber(EPDM)composites with the addition of ASW as ceramic filler were prepared in order to recycle solid waste.The effect of ammonium polyphosphate(APP)on the mechanical properties,thermal stability of the ASW/EPDM composites and the ceramic strength and microstructure of the residues derived from sintering of the composites were investigated.The results show that the addition of APP can improve the ceramic strength of the residues.When the content of APP is 80 phr,the maximum impact strength and three-point flexural strength are 0.44 kJ/m^(2) and 11 MPa,respectively.With the increase of APP content,the appearance of ceramic residues becomes complete gradually,the holes on the surface are reduced,and the microstructure of the residues becomes more compact.