摘要
利用天然矿物粉体作为功能材料,是实现无机矿物粉体高值化和可持续发展的特色路径,其中,通过精细化研磨和可控风选分级制得的微纳钙质硅酸盐就是一种极具应用价值的粉体功能材料。主要考察了微纳钙质硅酸盐对漆膜和PVC复合薄膜的遮盖力、热氧老化等性能的影响规律,并采用耐洗刷仪、反射率测定仪等设备对建筑涂料的耐洗刷次数、耐沾污性和对比率等性能进行了测试,进一步采用自动白度仪、万能力学试验机和热氧老化试验箱等设备对添加了微纳钙质硅酸盐的PVC复合薄膜的白度、力学性能、抗热氧老化等指标进行了研究。研究结果显示,引入微纳钙质硅酸盐后,不仅使得漆膜的耐沾污性能提升了22.2%,漆膜的对比率也得到极大提升(提升了32.7%),还能一定程度上提升复合薄膜的白度(提升了2.0%),同时,复合薄膜的拉伸强度提升了9.6%,且其抗热氧老化性能也得到了改善。可以发现,微纳钙质硅酸盐的超细化、高白度及优良的耐热稳定性是提升漆膜和PVC复合薄膜遮盖力和抗热氧老化性的关键。
The use of natural mineral powders as functional materials is a characteristic path to achieve high-value and sustainable development of inorganic mineral powders.Among them,micro-nanoscale calcium silicate obtained through fine grinding and controllable wind selection classification is a highly valuable powder functional material.The influence of micro-nanoscale calcium silicate on the covering power,thermal oxygen aging capability and other properties of coating films and PVC composite films was mainly investigated.The washability tester and reflectivity tester were used to test the washability&stain resistance,and ratio of building coatings.Furthermore,the whiteness,mechanical properties,and thermal oxygen aging resistance of PVC composite films with added micro-nanoscale calcium silicate were studied by using automatic whiteness tester,universal mechanical testing machines and thermal oxygen aging testing chamber.The research results showed that the introduction of micro-nanoscale calcium silicate could not only improve the stain resistance of coating films by 22.2%,but also could greatly enhance the contrast ratio of coating films with 32.7%.The whiteness of composite films could be enhanced to some extent by 2.0%.At the same time,the tensile strength of composite films was increased by 9.6%,and corresponding thermal oxidative aging resistance was also improved.It could be found that the ultra-fine,high whiteness,and excellent heat resistance stability of micro-nanoscale calcium silicate were the key factors to improve the covering power and thermal oxygen aging capability of coating films and PVC composite films.
作者
宋波
彭鹤松
李海滨
徐灵峰
SONG Bo;PENG Hesong;LI Haibin;XU Lingfeng(Jiangxi Guangyuan Chemical Co.,Ltd.,Ji'an 331500,China;School of Chemistry and Chemical Engineering,Jinggangshan University,Ji'an 343009,China;School of Chemistry and Chemical Engineering,Nanchang University,Nanchang 330031,China)
出处
《无机盐工业》
CAS
CSCD
北大核心
2024年第10期70-75,共6页
Inorganic Chemicals Industry
基金
江西省自然科学基金项目(20232BAB204029)
中国博士后科学基金资助项目(2024M751235)
江西省赣鄱俊才主要学科学术和技术带头人培养计划项目(20243BCE51120)。
关键词
微纳钙质硅酸盐
遮盖力
涂料
树脂
micro-nanoscale calcium silicate
covering power
coating
resin
