张琦，李巧玲，费少雷，闫超群（中北大学理学院化学系，山西 太原 030051）



高填充粉煤灰碳金板材的制备及硅烷偶联剂对其性能的影响

张琦，李巧玲，费少雷，闫超群
（中北大学理学院化学系，山西 太原 030051）

摘要：采用热压法制备了高填充粉煤灰碳金板材，研究了硅烷偶联剂对碳金板材力学性能的影响。采用扫描电镜对其断面形貌进行检测及能谱分析，结果表明：适当地添加硅烷偶联剂可以提高碳金板材的力学性能。当粉煤灰为400phr、硅烷偶联剂KH550的添加量为粉煤灰质量的2%时，碳金板材的力学性能达到最佳；拉伸强度31.59MPa，弯曲强度58.33MPa，冲击强度2.07kJ/m2，达到了通用建筑装饰材料的使用指标；粉煤灰填充量高达73%。

关键词：粉煤灰；复合材料；制备；硅烷偶联剂；力学性能

第一作者：张琦（1990—），男，硕士研究生，研究方向为高分子材料。E-mail zhangqitnt@163.com。联系人：李巧玲，教授，博士生导师，主要从事纳米功能材料研究。E-mail qiaolingl@163.com。

Preparation of carbon gold plate being highly filled with fly ash and investigation of its property affected by silane coupling agent

ZHANG Qi，LI Qiaoling，FEI Shaolei，YAN Chaoqun
（Department of Chemistry，College of Science，North University of China，Taiyuan 030051，Shanxi，China）

Abstract：The carbon gold plate highly filled with fly ash was prepared by hot pressing，and its mechanical property was explored by adding different amount of silane coupling agent. The fracture appearance of the obtained plates was observed by SEM. The surface element distribution of the samples was analyzed through EDS. The results indicated that adding proper amount of silane coupling agent (KH550) can improve the mechanical property of the carbon gold plate. When fly ash was 400phr and the content of silane coupling agent (KH550) was 2wt% of the fly ash，the mechanical property of the carbon gold plate reached the optimal state：the tensile strength，the bending strength and the impact strength were 31.59MPa 58.33MPa and 2.07kJ/m2，respectively，which all met the standards for common architectural decoration materials. The mass fraction of fly ash reached as high as 73 wt%. Key words：fly ash; composites; preparation; silane coupling agent; mechanical properties

碳金板材作为一种新型的建筑装饰材料，具有成本低、无二次污染且耐腐蚀、防水、防火等特性，正在受到社会各界的关注。碳金板材主要由固体废弃物粉煤灰和高分子材料聚氯乙烯（PVC）在高温高压下熔融压制而成[1-3]。粉煤灰极性较强，与PVC相容性不佳，影响板材性能，因此需要对粉煤灰进行表面改性[4-5]来提高二者的相容性，改善填料的分散度以提高加工性能，使制品具有良好的表面质量及力学、热学和电性能[6-9]，以期达到提高粉煤灰填充量、保护环境和降低碳金板材成本的目的。

目前，对填充剂最重要、最有效的处理方法是偶联剂处理法。……