SiO_2/有机硅/腰果酚醛树脂复合涂料的制备与性能
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摘要
用正硅酸乙酯和甲基三乙氧基硅烷、二甲基二乙氧基硅烷为原料,通过溶胶-凝胶法制备透明的SiO_2/有机硅树脂.再与腰果酚醛树脂(PCF)共混制备SiO_2/有机硅/腰果酚醛树脂(SiO_2/PCF-Si)复合涂料,通过红外光谱、紫外光谱、热重分析等分析其结构与性能,并测试其抗紫外性、物理机械性能、耐化学介质性能.结果表明,SiO_2/(PCF-Si)中酚羟基因与Si原子结合而减少,提高了耐热性.当SiO_2/有机硅凝胶质量分数为30%时,涂膜硬度3H,耐冲击性50 cm,耐碱性较好.
Transparent SiO_2/silicone resin was prepared by means of the sol-gel method,with tetraethoxysilane,methyltriethoxysilane,dimethyldiethoxysilane and 3-(methacryloxyproyl)-trimethoxysilane as the raw materials.SiO_2/silicone/cardanol-aldehyde resin composite coating was prepared via SiO_2/silicone resin blend with cardanol-aldehyde formaldehyde condensate(PCF).The structure and properties of the composite coating were characterized by IR,UV,TG and other measures.It is found that the silicon-oxygen bond in the composite coating decrease the concentration of phenolic hydroxyl group,which improved the heat-resistace.When the mass ratio of SiO_2/silicone and cardanol-aldehyde is 0.3,coating had a pencil scratch hardness of 3 H,impact resistance of 50 cm,with better alkali resistance.
Transparent SiO_2/silicone resin was prepared by means of the sol-gel method,with tetraethoxysilane,methyltriethoxysilane,dimethyldiethoxysilane and 3-(methacryloxyproyl)-trimethoxysilane as the raw materials.SiO_2/silicone/cardanol-aldehyde resin composite coating was prepared via SiO_2/silicone resin blend with cardanol-aldehyde formaldehyde condensate(PCF).The structure and properties of the composite coating were characterized by IR,UV,TG and other measures.It is found that the silicon-oxygen bond in the composite coating decrease the concentration of phenolic hydroxyl group,which improved the heat-resistace.When the mass ratio of SiO_2/silicone and cardanol-aldehyde is 0.3,coating had a pencil scratch hardness of 3 H,impact resistance of 50 cm,with better alkali resistance.
引文
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[2] 李国清,许淼清,林金火.顺酐和乙二醇改性腰果酚醛树脂的研究[J].中国生漆,2002(2):5-8.
[3] 陈玉,林金火.含铜-氮配键腰果酚醛缩聚物的特性及表征[J].林产化学与工业,2003,23(3):61-64.
[4] 刘小英,郑燕玉.腰果酚醛胺聚合物的制备及其性能测试[J].华侨大学学报(自然科学版),2013,34(1):63-67.
[5] 张玲,朱学海,姚虎卿.改性有机硅树脂涂料研究新进展[J].现代化工,2006,26(2):77-81.
[6] 熊联明,向顺成,舒宽金.有机硅耐磨涂料改性的研究进展[J].化工新型材料,2013,41(9):22-23.
[7] 廖庆玲,李轩科,左小华.有机硅改性酚醛树脂的研究[J].重庆文理学院学报(自然科学版),2011,30(4):54-58.
[8] 邓丰,白卫斌,林金火.有机硅改性腰果酚醛聚合物涂料的制备与性能研究[J].福建师范大学学报(自然科学版),2008,24(6):56-60.
[9] ZHU Zaisheng,TU Weiping,HU Jianqing.Synthesis of SiO2/organosilicone hybrid coating via Sol-Gel method[J].Journal of the Chinese Ceramic Society,2011,39(2):334-338.
[10] 王芳,罗仲宽,青双桂,等.溶胶-凝胶法制备TiO2-有机硅杂化涂层材料[J].无机材料学报,2010,25(1):37-40.
[11] 朱再盛,涂伟萍,胡剑青.聚酯/SiO2/有机硅复合涂料的合成与性能[J].华南理工大学学报(自然科学版),2011,39(3):37-41.
[12] 刘登良.涂料工艺[M].4版.北京:化学工业出版社,2010:1092-1904.
[13] 张军科.耐高温环氧-有机硅-酚醛树脂涂料的研制[D].太原:中北大学,2007.
[14] 幸松民.有机硅合成工艺及产品应用[M].北京:化学工业出版社,2000:819.
[15] 卢涌泉,邓振华.实用红外光谱解析[M].北京:电子工业出版社,1989:239.
[16] WANG Xiuyu,ZHANG Zhisheng,BAI Tian,et al.PF/EP/Nano-SiO2 composite paint for rester[J].Transactions of Tianjin University,2009,15(4):283-287.
[17] POMOGAILO A D.Polymer sol-gel synthesis of hybrid nanocomposites[J].Colloid Journal,2005,67(6):726-747.