粉煤灰增强铸型聚酰胺复合材料的研究  

Study on Fly Ash Reinforced Monomer Casting Polyamide Composites

作　　者：段学民[1] 陈立功[1] 周师庸[2] 

机构地区：[1]天津大学药物科学与技术学院,天津300072 [2]鞍山科技大学化学工程学院,辽宁鞍山114044

出　　处：《中国塑料》2004年第9期47-51,共5页China Plastics

摘　　要：将粉煤灰用作铸型聚酰胺的增强剂 ,以提高铸型聚酰胺的性能 ,降低其成本。经KH 5 5 0硅烷偶联剂处理的粉煤灰可以改善基体的浸润性和相容性 ,使基体的结晶度增大 ,球晶尺寸减小 ,从而改善了铸型聚酰胺复合材料的拉伸强度、肖氏硬度和吸水率等性能 ,但冲击强度和断裂伸长率有所降低。在引发剂加量为 0 .6mol/10 0mol己内酰胺、活化剂加量为 0 .3mol/10 0mol己内酰胺、聚合温度为 185℃的条件下 ,制备粉煤灰增强铸型聚酰胺复合材料的最佳工艺条件是 :粒径 <0 .0 8mm的粉煤灰经KH 5 5 0处理后 ,在己内酰胺熔融前加入 ,复合材料中粉煤灰的含量应在 15 %～ 2 5Fly ash was used as a modifier of the monomer castin g polyamide. Treated with coupling agent KH-550, the fly ash could be well di spersed in monomer casting polyamide matrix and thus increased its tensile stren gth, S hore hardness and water-absorbing rate, etc., with the cost of decrease in impa ct strength and elongation at break. The optimal preparation condition was found as: the content of initiator and activator being 0.6 mol and 0.3 mol per 100 mo l caprolactam respectively, the temperature of polymerization being 185 ℃. The size of fly ash should be less than 200 mm and its content should be between 15 wt% and 25 wt% based on the monomer.

关 键 词：粉煤灰 铸型聚酰胺 增强 复合材料 

分 类 号：TB332[一般工业技术—材料科学与工程]