摘要
以纳米SiO_(2)气凝胶、中空玻璃微珠为隔热填料,ZrO_(2)、六钛酸钾晶须(PTW)为辅助功能填料,长径玻璃纤维、短径含锆陶瓷纤维为相增强材料,改性硅溶胶与改性水玻璃混合无机树脂为成膜基料,制备气凝胶隔热保温涂料。通过对导热系数、隔热温差、黏结强度等的测定,探究了基料、各功能填料配比、颜基比对涂膜成膜性、隔热性及黏结强度等性能的影响。同时测试了其耐水性、耐中性盐雾、耐老化等性能,对保温涂层配套结构防腐蚀性能进行了评价。结果表明:颜基比为1:2,隔热填料、辅助功能填料、相增强填料按质量比20:2:7制备的隔热保温涂料综合性能最佳,导热系数为0.0539 W/(m·K),黏结强度为294 kPa,制备的隔热保温涂料的隔热性能和机械性能得到平衡。保温涂层配套体系的耐水性、耐中性盐雾和耐老化试验分别达到96h、720h和1440 h,具有良好的耐腐蚀性。
In this paper,a SiO_(2)-aerogel based thermal insulation coating was developed using nano SiO_(2) aerogel and hollow glass bead as insulation filler,ZrO_(2) and PTW as auxiliary insulation fillers,long glass fiber and short zirconia ceramic fiber as phase reinforced materials,and mixed inorganic resin of modified silica sol and modified sodium silicate as film-forming resin.The effects of matrix resin,functional filler ratio and pigment binder ratio(P/B)on the performance of film-forming,thermal insulation and bonding strength were explored through thermal conductivity,temperature difference and adhesion measurements.At the same time,anti-corrosion performance of the coating system was evaluated by the water resistance,resistance to neutral salt spray and aging resistance tests.The results indicated that the coating showed the best comprehensive performance when the P/B ratio was 1:2,and the ratio of hollow glass beads and aerogels mixture,PTW and ZrO_(2) powder mixture,and glass fiber and ceramic fiber mixture was 20:2:7.The thermal conductivity and bonding strength were 0.0539 W/(m·K)and 294 kPa,respectively,exhibiting balanced thermal insulation and mechanical properties.The water resistance,resistance to neutral salt spray and aging resistance tests separately reached 96 h,720 h and 1440 h,demonstrating excellent anticorrosion performance.
作者
王焕焕
狄志刚
马胜军
邱云鹏
张耀
王伟杰
官自超
Wang Huanhuan;Di Zhigang;Ma Shengjun;Qiu Yunpeng;Zhang Yao;Wang Weijie;Guan Zichao(CNOOC Changzhou Paint&Coatings Industry Research Institute Co.,Ltd.,Changzhou,Jiangsu 213016,Ch加a)
出处
《涂料工业》
CAS
CSCD
北大核心
2022年第3期57-64,共8页
Paint & Coatings Industry
