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Citation: ZU Yanhua, JIANG Pengbo, SONG Shuang, YU Shijun, JIAN Xigao, JIN Qifeng. Synthesis and Properties of Fluorine and Silicon Modified Polyurethane Self-assembly Films[J]. Chinese Journal of Applied Chemistry, ;2012, 29(10): 1138-1142. doi: 10.3724/SP.J.1095.2012.20011 shu

Synthesis and Properties of Fluorine and Silicon Modified Polyurethane Self-assembly Films

1.
a School of Chemistry and Chemical Engineering, Liaoning Normal University, Dalian 116021, China;
2.
b Department of Polymer Science & Materials, Dalian University of Technology, Dalian 116012, China

Corresponding author: JIN Qifeng,
Received Date: 10 January 2012
Available Online: 1 March 2012
Fund Project: 辽宁省博士启动基金资助项目(20111066) (20111066)

Fluorinated polyurethane prepolymer(FPU) was synthesized using 2,4-toluene diisocyanate(TDI),poly(ethylene glycol) adipate(PEA),dimethylol propionic acid(DMPA),fluoride monohydric alcohol(F-OH).FPUSi was then synthesized by the in situ acylation reaction of isocyanatopropyltriethoxysilane(Si-NCO) with FPU forming a polymer bearing triethoxysilyl groups.The structures of polymers and self-assembled fluorocarbon films were characterized by FT-IR.The surface properties of self-assembled films were tested by atomic force microscopy et al.FPU and FPUSi showed thermal stability with 5% mass loss at 178℃ by thermal gravimetric analysis in nitrogen.The contact angle of the obtained FPUSi self-assembled film was improved to 81°.The tribological experiment showed that the self-assembled films had a very low friction coefficient(about 0.09) and good anti-wear properties under a load of 400 mN.The improved tribological properties of the modified substrate were attributed to the good adherence of FPUSi self-assembled films on the substrate and synergy of FPUSi matrix.
- friction,
- fluorine and silicon modified polyurethane,
- self-assembly films
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