| 溶胶-凝胶法制备有机硅/SiO2杂化涂料的稳定性 |
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| 引用本文： | 林金娜,侯有军,曾幸荣. 溶胶-凝胶法制备有机硅/SiO2杂化涂料的稳定性[J]. 高分子材料科学与工程, 2007, 23(2): 128-131 |
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| 作者姓名： | 林金娜 侯有军 曾幸荣 |
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| 作者单位： | 华南理工大学材料科学与工程学院,广东,广州,510640;福建农林大学交通学院,福建,福州,350002;华南理工大学材料科学与工程学院,广东,广州,510640 |
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| 摘 要： | 以正硅酸乙酯(TEOS)、二乙氧基二甲基硅烷(DDS)、有机硅烷偶联剂(MPTMS和VTMS)为原料,采用sol-gel法制备了可UV固化的有机硅/SiO2杂化涂料,并考察了原料配比对杂化涂料稳定性的影响。结果表明:DDS-MPTMS/SiO2比DDS-VTMS/SiO2稳定性更好;乙醇用量增加有利于提高储存稳定性;随着陈化时间延长,杂化涂料粒径变大,分布变宽,漆膜透光率下降。当各组分的摩尔比为nDDS/nTEOS=2/3,nMPTMS/nTEOS=1/3,nHCl/nSi-O=0.006,nEtOH/nSi-O=1,nH2O/nSi-O=0.6时,杂化涂料稳定性最佳。在此条件下制备的杂化涂料平均粒径3.6 nm,凝胶时间大于300 d,经UV固化后漆膜的性能最好。
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| 关 键 词： | 二氧化硅 有机硅 杂化涂料 溶胶-凝胶法 稳定性 |
| 文章编号： | 1000-7555（2007）02-0128-04 |
| 修稿时间： | 2006-07-17 |
The Stability of Organic Silicone/SiO2 Hybrid Coating by Sol-Gel Process |
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| LIN Jin-na,HOU You-jun,ZENG Xing-rong. The Stability of Organic Silicone/SiO2 Hybrid Coating by Sol-Gel Process[J]. Polymer Materials Science & Engineering, 2007, 23(2): 128-131 |
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| Authors: | LIN Jin-na HOU You-jun ZENG Xing-rong |
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| Affiliation: | 1. College of Materials Science and Engineering, South China University of Technology, Guangzhou 510640, China; 2. College of Traffic, Fujian Agriculture and Forestry University , Fuzhou 350002, China |
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| Abstract: | Organic silicone/SiO2 hybrid coating was prepared by sol-gel process with tetraethylorthosilicate(TEOS),dimethyl diethylorthosilicate(DDS) and organosilane coupling agent(MPTMS and VTMS).The effects of organosilane coupling agent,HCl,ethanol,water and aging time on the stability of hybrid coating were studied.It is found that DDS-MPTMS/SiO2 has better stability than DDS-VTMS/SiO2.The stability of hybrid coating becomes better when the ethanol content increases.With the increase of aging time particle diameter of hybrid coating increases,the distribution becomes broader and the film transmittance decreases.When the molar ratio of hybrid coating is nMPTMS/nTEOS=2/3,nDDS/nTEOS=1/2,nHCl/nSi-O=0.006,nEtOH/nSi-O=1,nH2O/nSi-O=0.6,the particle average diameter is 3.6 nm,the gelation time is exceeded 300 d,and the UV-curing films have best physical and mechanical properties. |
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| Keywords: | SiO2 organic silicone hybrid coating sol-gel process stability |
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