【作者】 张佩聪； 刘钺； 王成城； 邓苗；

【Author】 ZHANG Pei-cong~1, LIU Yue~2, WANG Cheng-cheng~3, DENG miao~1 1. College of Materials and Chemistry, Chengdu University of Technology, Chengdu 610059, China; 2. Information Engineering School of Zhengzhou University, Henian 450001, Chnia; 3. Chengdu Chuanlu Wew Chemical Construction Materials Limited Company, Chengdu 6101003, China

【机构】 成都理工大学材料与化学化工学院； 郑州大学信息工程学院； 成都川路新型化学建材有限公司；

【摘要】 优选2μm重钙和轻钙,进行UPVC标准样块和UPVC给水管的填充对照实验表明:2μm重钙对PVC具有更优化的增强增韧及流变性适宜等均衡改性功效;在填充量高达26.6%的情况下,UPVC给水管的各项性能指标均达到国家标准;2μm重钙替代轻钙用作UPVC制品的填料是完全可行的。利用扫描电镜分析（SEM）及电镜照片直接数字化测量等手段,揭示2μm重钙对PVC树脂的等径粒子填充和填料中适量的纳米粒子含量是其增强增韧UPVC制品的机理所在。2μm重钙填料的特征为:粉体自分散性良好,d₁₀₀≤2μm,d₅₀ 0.201μm,纳米粒子的含量≥12%,粒度分布符合近正态或R-R分布。更多还原

【Abstract】 The comparative tests of UPVC standard sample were made that with UPVC service pipe filling with 2μm heavy Calcium and light Calcium. The results indicate: 2μm heavy Calcium Carbonate have better proportionate modification effects on toughening and strengthening UPVC produces, and on rheological behavior than light Calcium. Various properties of the UPVC service pipe are still up to national standard at 26.6% high filler level; so it is viable to replace light calcium by 2μm heavy Calcium in UPVC produces. By SEM and directl digitizing measurement of SEM photo, the paper shows that the mechanism of toughening and strengthening lies in the filling of equivalent grain size between 2μm heavy Calcium and PVC particles, and the proper content of nanometer particles. The characters of 2 μm heavy Calcium as follows, the powders have a well dispersity, d₁₀₀≤2μm, d₅₀ 0.201μm, the content of nanometer particles is over 12 percent, its size distribution is in accordance with normal distribution or R-R distribution.更多还原