原位聚合法制备聚酰胺6/ZnO纳米复合材料及性能研究  

Preparation and Properties of Polyamide 6/ZnO Nanocomposite via In-situ Method

作　　者：徐启杰[1] 胡鹏[1] 张爽[1] 吉同超 张宁[1] 潘庆才[1] 

机构地区：[1]黄淮学院化学化工系,河南驻马店463000

出　　处：《化学试剂》2017年第7期689-693,共5页Chemical Reagents

基　　金：驻马店市科技攻关项目(15025);黄淮学院校级科研项目(201512713;201512701)

摘　　要：以Zn_2(OH)_2CO_3为填料,采用原位聚合法制备聚酰胺6/ZnO纳米复合材料。利用TEM、XRD、TGA、DSC、POM测试了纳米ZnO的粒径和分散性能,以及复合材料的结晶性能、热稳定性能。结果显示,Zn_2(OH)_2CO_3在聚酰胺6聚合体系中能够原位生成纳米ZnO,并均匀分散于聚酰胺6基体材料中。纳米ZnO在聚酰胺6基体材料中具有异相成核作用,提高了聚酰胺6的结晶度,然而对基体材料分子链运动的阻碍作用降低了结晶速率和晶体尺寸。通过万能拉力试验机、冲击试验机和高速环块摩擦试验机研究了纳米ZnO对聚酰胺6基体材料的力学性能和摩擦学行为。当纳米ZnO的含量为0.2%时,拉伸强度和冲击韧性较纯聚酰胺6提高了75%,摩擦学行为也有较好的改善作用。The polyamide 6/ZnO nanocomposite was prepared readily by in-situ polymerization,with which Zn2（OH）2CO3 was used as filler.This method was beneficial to reduce the calcining process of Zn2（OH）2CO3 to obtain ZnO and the production cost of the preparation of polymer-nanoparticle composites.As-prepared composite was characterized by using TEM,XRD,TGA,DSC,and POM to test the crystallization properties and thermal stability.The mechanical properties and friction performance of composite were evaluated via using high-speed ring friction testing machine,universal tensile testing machine,impact testing machine.Asobtained results showed that nano-ZnO was derived from Zn2（OH）2CO3 in the process of in-situ polymerization of polyamide 6/ZnO nanocomposite.Moreover,nano-ZnO with heterogeneous nucleation effect in the composite led to the improvement of the crystallinity of polyamide 6.Additionally,due to the hindering effect of nano-ZnO on the movement of polyamide 6 molecular chains,that reduced crystallization rate and crystal size of polyamide 6 matrix.The results indicated that the mechanical properties and tribological properties of polyamide 6/ZnO nanocomposites with 0.2% ZnO had the improvement of 75% than that of pure polyamide 6.

关 键 词：复合材料 性能 测试 纳米ZNO 

分 类 号：O635[理学—高分子化学]