Page 131 - 《精细化工》2021年第11期

第 38 卷第 11 期 精 细 化 工 Vol.38, No.11
2021 年 11 月 FINE CHEMICALS Nov. 2021

功能材料
改性硅溶胶-苯丙乳液反射隔热涂层的制备及性能

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余茂林，孙 皓，罗 盛，邓安仲 ，李胜波 ，杨 光
（中国人民解放军陆军勤务学院，重庆 401331）

摘要：采用 γ-缩水甘油醚氧丙基三甲氧基硅烷（KH560）对碱性纳米硅溶胶进行接枝改性，将其与苯丙乳液复
合制备了节能涂层成膜基料，再分别向成膜基料中加入金红石型钛铬黄及刚玉型铬绿颜浆，制备了两类彩色隔
热节能涂层。考察了功能颜料种类及功能颜料掺入量对复合涂层节能性能的影响。结果表明，与未改性硅溶胶
相比，KH560 改性后硅溶胶的平均粒径由 987.3 nm 降低到 72.3 nm，Zeta 电位绝对值提高了 29.7 mV，其在苯
丙乳液中分散性提高。当钛铬黄、铬绿颜浆掺入量分别为成膜基料质量的 20%和 10%时，两种彩色涂层隔热性
能达到最优，此时其太阳光反射比分别为 0.633 和 0.484，红外发射率分别为 0.91 和 0.89，试板背面平衡温度较
空白试板分别降低 6.6 和 4.8 ℃，同时兼具较好的力学性能及耐腐蚀性能。
关键词：反射隔热；改性硅溶胶；苯丙乳液；复合涂层；功能颜料；功能材料
中图分类号：TQ637.6 文献标识码：A 文章编号：1003-5214 (2021) 11-2277-07

Preparation and properties of modified silica sol-styrene-acrylic

emulsion reflective insulation coatings

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YU Maolin, SUN Hao, LUO Sheng, DENG Anzhong , LI Shengbo , YANG Guang
（Army Logistics University of PLA, Chongqing 401331, China）

Abstract: Alkaline nano-silica sol was grafted and modified by γ-glycidoxypropyltrimethoxysilane (KH560)
and composited with styrene-acrylic emulsion to prepare film base material. Then, two kinds of color thermal
insulation and energy saving coatings were prepared by adding rutile type titanium chromium yellow and
corundum type chromium green color paste, respectively. The effects of type and doping content of the
functional pigments on the energy saving performance of the composite coating were investigated. The
results showed that compared with those of unmodified silica sol, the average particle size of silica sol was
reduced from 987.3 nm to 72.3 nm, the absolute value of Zeta potential was increased by 29.7 mV, and the
dispersion of silica sol in styrene-acrylic emulsion was improved. The thermal insulation performance of the
two kinds of color coatings was the best when the doping amount of titanium chrome yellow and chrome
green color paste was 20% and 10% of the mass of the film forming base material, respectively. At this time,
the solar reflectance was 0.633 and 0.484, the infrared emissivity was 0.91 and 0.89, and the equilibrium
temperature at the back of the plates was 6.6 and 4.8 ℃ lower than that of the blank test plate, respectively.
Moreover, the two kinds of color coatings had good mechanical properties and corrosion resistance.
Key words: reflective insulation; modified silica sol; styrene-acrylic emulsion; composite coating; functional
pigment; functional materials

太阳辐射会使建筑、油罐及机械装备等产生温 能耗占社会总能耗的 32% [1-2] 。传统隔热节能材料，
度过高等问题。建筑室内空调降温 1 ℃与取暖升 如聚苯乙烯泡沫（EPS）、碳化软木板、EPS 板薄抹
温 1 ℃相比，要额外增加 30%的能耗，而此类建筑 灰保温系统以及保温砂浆等存在体系过厚、装饰性

收稿日期：2021-04-13; 定用日期：2021-07-21; DOI: 10.13550/j.jxhg.20210385
基金项目：国家自然科学基金（11702324）；重庆市教委科研基金（CYS19374）；重庆市自然科学基金（CSTC2018JCYJAX0306）
作者简介：余茂林（1996—），男，硕士生，E-mail：goodmaolin@163.com。联系人：邓安仲（1974—），男，教授，E-mail：denglin929@
126.com；李胜波（1977—），男，教授，E-mail：57092272@qq.com。