论文部分内容阅读
介绍了当前预发泡聚苯乙烯颗粒(EPS)的各种改性研究方法,其中包括各种赋予发泡颗粒某种特殊功能的改性方法:无卤阻燃、低吸油型、低吸水型、耐化学药剂型、高抗冲性能型、含低挥发性有机气体(VOC)的环保型预发泡聚苯乙烯颗粒,以及涉及的各种改性工艺,包括先将聚苯乙烯材料改性后再造粒的二步法改性工艺、聚合成粒过程中的一步法改性工艺、聚苯乙烯颗粒发泡前的表面改性和颗粒发泡后再进行表面改性等方法,并提出了改性过程中的注意事项和影响最终产品力学性能的主要原因。
In this paper, various modification methods of pre-expanded polystyrene (EPS) particles are introduced, including various modification methods to give certain special functions to foamed particles: halogen-free flame retardant, low oil absorption type, low water absorption type , Chemical resistant, high impact performance, environmentally friendly pre-expanded polystyrene particles containing low volatile organic compounds (VOCs), and various modification processes involved, including first modifying the polystyrene material And then re-granulation two-step modification process, polymerization granulation process of one-step modification process, polystyrene particles before the foam surface modification and particle foaming and then surface modification methods, and put forward Note the modification process and the main reason for the mechanical properties of the final product.