引用本文:刘福杰， 齐育红， 张占平.固化剂和硅烷偶联剂对有机硅涂层性能的影响[J].中国表面工程,2014,27(1):114~119
LIU Fujie, QI Yuhong, ZHANG Zhanping.Influence of Curing Agent and Silane Coupling Agent on the Properties of Silicone Coatings[J].China Surface Engineering,2014,27(1):114~119
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固化剂和硅烷偶联剂对有机硅涂层性能的影响
刘福杰， 齐育红， 张占平
大连海事大学 船机修造工程实验室， 辽宁 大连 116026
摘要:
通过控制有机硅涂料配方中固化剂和硅烷偶联剂的含量，研究它们对涂层材料的弹性模量、硬度、疏水性，以及吸水率和耐水介质浸泡性能的影响。结果表明，当固化剂含量大于4%后，随着固化剂含量的增加，涂层的弹性模量降低，邵氏硬度增加，吸水率增大；硅烷偶联剂含量的增加，有机硅涂层的弹性模量和吸水率随之增大，而邵氏硬度和水接触角减小。固化剂添加6%时涂层的弹性模量对海水浸泡最为敏感。含5%固化剂和8%硅烷偶联剂含量的有机硅涂层在海水中的稳定性明显降低。过高的固化剂添加量会导致硅氧链的交联程度增加，网状结构变密，增加涂层的硬度，不利于涂层的防污性能；过高的硅烷偶联剂添加量会导致涂层表面的亲水基团增多，水接触角降低，海洋细菌附着增加。
关键词:  有机硅  固化剂  硅烷偶联剂  性能
DOI：10.3969/j.issn.1007-9289.2014.01.018
分类号:
基金项目:
Influence of Curing Agent and Silane Coupling Agent on the Properties of Silicone Coatings
LIU Fujie, QI Yuhong, ZHANG Zhanping
Key Laboratory of ShipMachinery Maintenance & Manufacture， Dalian Maritime University， Dalian 116026， Liaoning
Abstract:
Controlling the content of curing agent and silane coupling agent in the silicone formula， the effects of curing agent and silane coupling agent on the elastic modulus， hardness， hydrophobicity， water absorption rate and resistance to water immersion were investigated for silicone coatings. The results show that the elastic modulus of the coating decreases， and shore hardness and water absorption increase with increasing curing agent when its content is more than 4%. The elastic modulus and water absorption of the silicone coating decrease， however, shore hardness and water contact angle decrease with the increase of the content of silane coupling agent. The elastic modulus of the coating with the curing agent of 6% is the most sensitive to seawater immersion. The stability of the silicone coating is significantly reduced by seawater immersion for the coating with the curing agent of 5% and silane coupling agent of 8%. Too much curing agent leads to the increase of the crosslinked degree of siliconoxygen chains, density of mesh structures, coating hardness, and the reduce of antifouling performance. Too much silane coupling agent leads to the increase of the hydrophilicgroup of the surface, the decreaseof the water contact angle, and the increase of marine bacterial attachment.
Key words:  silicone  curing agent  silane coupling agent  property
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