CIESC Journal ›› 2007, Vol. 58 ›› Issue (11): 2920-2925.
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HE Qiuxing;HU Jianqing;TU Weiping
Online:
Published:
何秋星;胡剑青;涂伟萍
Abstract:
Nanosized bismuth-doped tin dioxide/waterborne polyurethane nanocomposite materials were prepared by the blending method with self-made nanosized bismuth-doped tin dioxide slurry and waterborne polyurethane as raw materials.Experimental results indicated that the isoelectric point of nanosized bismuth-doped tin dioxide slurry was about pH 6 and the nanosized bismuth-doped tin dioxide was dispersed well with the composite dispersers of siloxane coupling agent of KH-550 and DP-518.The tensile strength and breaking extensibility of nanocomposite film containing 1.0% of the nanosized bismuth-doped tin dioxide were 9.23 MPa and 223%, respectively, and the transmittance of visible light was about 70%.The heat-insulation was over 8℃ in contrast to the pure waterborne polyurethane film.
Key words: 纳米铋掺杂二氧化锡, 水性聚氨酯, 共混法, zeta电位
纳米铋掺杂二氧化锡,
摘要:
以自制纳米铋掺杂二氧化锡(nano-BTO)分散浆料和水性聚氨酯(PU)为原料,采用共混法制备nano-BTO/水性聚氨酯杂合材料。运用zeta电位仪、激光粒度仪和TEM等研究了nano-BTO的zeta电位分布及其分散。结果表明,nano-BTO浆料的等电点在pH=6附近;采用硅烷偶联剂KH-550和高分子分散剂DP-518对nano-BTO粉体进行分散处理可获得良好分散性的水性浆料。采用紫外-可见-近红外分光光度计和自制的隔热测试装置等研究了nano-BTO/氨酯杂合材料的力学性能、光学性能和热学性能。结果表明,当nano-BTO含量为1.0%时,涂膜的拉伸强度和断裂伸长率分别达到了9.23 MPa、223%,可见光透射率约为70%,其隔热效果同比纯PU膜可降温达8℃以上。
关键词: 纳米铋掺杂二氧化锡, 水性聚氨酯, 共混法, zeta电位
HE Qiuxing, HU Jianqing, TU Weiping. Nanosized bismuth-doped tin dioxide/waterborne polyurethane nanocomposite materials[J]. CIESC Journal, 2007, 58(11): 2920-2925.
何秋星, 胡剑青, 涂伟萍. 纳米铋掺杂二氧化锡/水性聚氨酯复合材料 [J]. 化工学报, 2007, 58(11): 2920-2925.
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