PVC/改性纳米CaCO_(3)复合材料的力学性能和耐热性能研究  

Study on Mechanical Properties and Heat Resistance of PVC/Modified Nano-CaCO_(3) Composites

作　　者：李洪江 卢泓冶 唐亮星 刘早晨 李冬 王递进 LI Hong-jiang;LU Hong-ye;TANG Liang-xing;LIU Zao-chen;LI Dong;WANG Di-jin(Yunan Power Grid Co.,Ltd.,Kunming 650011,China;Construction Branch,Yunan Power Grid Co.,Ltd.,Kunming 650000,China;Power Grid Planning and Construction Research Center of Yunnan Power Grid Co.,Ltd.,Kunming 650000,China;China Energy Engineering Group Yunnan Electric Power Design Institute Co.,Ltd.,Kunming 650051,China;Zhongke Baiwei(Yunnan)Technology Co.,Ltd.,Kunming 650000,China)

机构地区：[1]云南电网有限责任公司,云南昆明650011 [2]云南电网有限责任公司建设分公司,云南昆明650000 [3]云南电网有限责任公司电网规划建设研究中心,云南昆明650000 [4]中国能源建设集团云南省电力设计院有限公司,云南昆明650051 [5]中科百惟(云南)科技有限公司,云南昆明650000

出　　处：《塑料科技》2024年第1期40-43,共4页Plastics Science and Technology

基　　金：云南电网科技项目(YNKJXM20170493)。

摘　　要：文章利用钛酸酯改性纳米碳酸钙(nano-CaCO_(3)),将改性nano-CaCO_(3)与聚氯乙烯(PVC)混合,制备了PVC/nano-CaCO_(3)复合材料,探究改性nano-CaCO_(3)掺量对PVC/改性nano-CaCO_(3)复合材料的力学性能和耐热性能的影响。结果表明:钛酸酯成功接枝到nano-CaCO_(3)表面。改性nano-CaCO_(3)掺量不超过10%时,其在复合材料中具有良好的分散性。随着改性nano-CaCO_(3)掺量的增加,PVC/改性nano-CaCO_(3)复合材料的拉伸性能和冲击强度先提高后降低。当改性nano-CaCO_(3)掺量为10%时,PVC/改性nano-CaCO_(3)复合材料的力学性能最好,拉伸强度、断裂伸长率和冲击强度分别是PVC的1.74倍、1.75倍和2.12倍;复合材料的初始热降解温度提高了80℃,残余质量提高了25.7%。Using titanium ester-modified nano-calcium carbonate(nano-CaCO_(3)),PVC/modified nano-CaCO_(3) composites were prepared by blending modified nano-CaCO_(3) with polyvinyl chloride(PVC).The study aimed to investigate the influence of the modified nano-CaCO_(3) content on the mechanical properties and thermal properties of the PVC/nano-CaCO_(3) composites.The results show that titanium ester is successfully grafted onto the surface of nano-CaCO_(3).When the content of modified nano-CaCO_(3) does not exceed 10%,it exhibits good dispersion in the composites.With an increase of the content of modified nano-CaCO_(3),the tensile properties and impact strength of PVC/modified nano-CaCO_(3) composites initially increase and then decrease.At a modified nano-CaCO_(3) content of 10%,the PVC/modified nanoCaCO_(3) composite exhibits the best mechanical properties,with the tensile strength,elongation at break,and impact strength being 1.74 times,1.75 times,and 2.12 times those of PVC,respectively.The initial thermal degradation temperature of the composite is increased by 80 ℃,and the residual mass is increased by 25.7%.

关 键 词：纳米碳酸钙 聚氯乙烯 力学性能 耐热性能 

分 类 号：TB332[一般工业技术—材料科学与工程] TQ325.3[化学工程—合成树脂塑料工业]