硅氧烷改性WPU/ATO复合分散体的制备与性能  

Preparation and performance of siloxane modified WPU/ATO hybrid dispersions

作　　者：吴金丽[1] 李雪[1] 崔继菲[1] 臧金燕[1] 杭继虎[1] 张福强[1] 

机构地区：[1]河北工业大学高分子材料与工程研究所,天津300130

出　　处：《功能材料》2012年第10期1316-1318,共3页Journal of Functional Materials

基　　金：河北省科技支撑计划资助项目(10215102D)

摘　　要：将合成的水性聚氨酯(WPU)与纳米氧化锡锑(ATO)复合,得到了功能性WPU/ATO复合分散体,研究了γ-缩水甘油醚氧丙基三甲氧基硅烷(KH560)的交联反应及其对薄膜性能的影响。FT-IR结果确认了KH560硅醇间的缩合反应,以及KH560的环氧基与WPU中羧基之间的酯化反应。缩合和酯化等反应实现了功能性薄膜的后交联,既显著改善了薄膜的附着力、硬度和耐水性,又保障了良好的透过率和隔热效果。当KH560用量为3.0%(质量分数),ATO用量为7.0%(质量分数)时,薄膜附着力为0级,硬度达2H,吸水率为10.7%,可见光透过率为70.1%,红外屏蔽率达到66.5%,薄膜满足了透明和隔热的双重要求。WPU/ATO hybrid dispersion was prepared through synthesized waterborne polyurethane （WPU） and nano antimony tin oxide （ATO） dispersion. The influences of the crosslinking reaction of γ-glycidoxyprop- yltrimethoxy silane （KH560） on the performance of formed films were investigated in paper. FT-IR proves that the condensation reaction between silanol, and the esterification between carboxyl of WPU and epoxy groups in KH560. Functional films were modified with post-crosslinking reaction, and the hardness, adhesion and water resistance were improved effectively, while sufficient transparency and excellent heat insulation performance re- main as well. When the contents of KH560 and ATO are 3.0% and 7.0%, pencil hardness, adhesion force and water absorption reach 2H, 0 degree and 10.7 %, respectively. On the otherhand, the average transmittance for visible light is 70.1% and the shield rate to near infrared light is 66.5 $, therefore exhibiting effective heat-in- sulatability.

关 键 词：水性聚氨酯 交联反应 隔热 氧化锡锑 透过率 

分 类 号：TQ630.7[化学工程—精细化工] TB34[一般工业技术—材料科学与工程]