废弃环氧模塑料填充聚氯乙烯的研究

Study on PVC Filled with Waste Epoxy Molding Compound

用废弃环氧模塑料粉作为填料,采用模压成型的方法制备了聚氯乙烯(PVC)/废弃环氧模塑料复合材料,研究了废弃环氧模塑料粉的组成和性质及其与PVC的界面黏结情况,分别考察了温度和废弃环氧模塑料粉含量对复合材料力学性能和动态力学性能的影响。结果表明,废弃环氧模塑料粉具有一定的活性,能与极性树脂PVC发生作用而产生界面接枝;在模压温度为200℃、废弃环氧模塑料粉含量为60%(质量分数,下同)时,复合材料的拉伸强度为32.13 MPa,弯曲强度和冲击强度分别为60.70 MPa和4.68 kJ/m2,基本满足相关产品的要求;随着废弃环氧模塑料粉含量的增加,复合材料的储能模量提高,损耗峰向高温方向移动,且损耗峰形先变宽后变窄。

Waste epoxy molding compound （WEMC） powder was used as a filler to prepare PVC/WEMC composites by compression molding. The interracial bonding between the filler and PVC matrix were studied. Effects of molding temperature and WEMC powder content on the mechanical and dynamic mechanical properties of the composites were investigated. It showed that WEMC powder had reactivity to graft onto polar resin PVC. When molding temperature was 200 ℃, content of WEMC was 60 wt %, the composites showed excellent mechanical properties, with tensile strength of 32. 13 MPa, flexural strength of 60. 70 MPa, and impact strength of 4. 68 kJ/m2. With increasing WEMC powder content, the storage modulus of the composite improved, the loss factor peak moved to higher temperature area, and the shape of the peak became wider first, and then narrower.