碳酸钙填料对木薯秸秆/聚碳酸亚丙酯复合材料力学及热稳定性的影响  

Effects of Calcium Carbonate on Mechanical Properties and Thermal Stability of Cassava Straw Flour/PPC Composites

作　　者：朱敬阳 董先明 王宁 袁纳新 孙宏雨 ZHU Jing-yang;DONG Xian-ming;WANG Ning;YUAN Na-xin;SUN Hong-yu(College of Materials and Energy,South China Agricultural University,Guangzhou 510642,Guangdong,China)

机构地区：[1]华南农业大学材料与能源学院,广东广州510642

出　　处：《木材工业》2020年第3期27-31,共5页China Wood Industry

基　　金：广东省科技计划项目“PPC/木薯秸秆复合材料制备技术研究”(2013B020305002)。

摘　　要：以木薯秸秆、聚碳酸亚丙酯(PPC)制备复合材料。通过双因素四水平试验法,探究四种碳酸钙及其添加量对复合材料力学及热稳定性的影响。结果表明:添加纳米碳酸钙(尤以添加15%纳米碳酸钙)和活性碳酸钙的试板,力学性能优于添加重质、轻质碳酸钙的试板,弯曲强度最大值达到42.1 MPa,远超GB/T 24137-2009《木塑装饰板》的要求(≥20 MPa);热重分析也表明,碳酸钙在一定程度上能减缓复合材料的热降解,改善其热稳定性。Cassava straw/polypropylene carbonate(PPC)composites samples were made at laboratory.Orthogonal array testing method with two factors and four levels was used to investigate effects of the calcium carbonates as a filler.Mechanical properties and thermal stability of the composites were evaluated.The results showed that mechanical properties of the composite samples filled with both nano-calcium carbonate and active calcium carbonate were better than that filled with heavy or light calcium carbonate.Particularly,bending strength of the composite samples filled with 15%nano-calcium carbonate presented 42.1 MPa,which exceeded the requirements(≥20 MPa)of China national standard GB/T24137-2009.Thermal gravimetric analysis(TGA)results further showed that thermal stability of the composite samples was improved to some extent by filling with calcium carbonates.

关 键 词：碳酸钙 木薯秸秆 聚碳酸亚丙酯 力学性能 热稳定性 流变性 

分 类 号：S38[农业科学—农艺学] TB332[一般工业技术—材料科学与工程]