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可用作水润滑轴承的聚氨酯复合材料的制备

李方1,帅长庚1,何琳1,王世伟2*,杨小牛2*   

  1. (1.海军工程大学振动与噪声研究所 武汉 430033;2.中国科学院长春应用化学研究所 长春 130022)
  • 收稿日期:2011-04-22 修回日期:2011-06-24 出版日期:2012-01-10 发布日期:2012-01-10
  • 通讯作者: 王世伟,助理研究员; Tel:0431-85262416; Fax:0431-85262403; E-mail:swwang@ciac.jl.cn; 研究方向：高分子复合材料，水润滑轴承材料

Polyurethane Composites for Water-lubricated Bearings Application

LI Fang1, SHUAI Changgeng1, HE Lin1, WANG Shiwei2*, YANG Xiaoniu2*   

  1. (1.Institute of Noise and Vibration,Naval University of Engineering,Wuhan 430033,China;
    2.Changchun Institute of Applied Chemistry,Chinese Academy of Sciences,Changchun 130022,China)
  • Received:2011-04-22 Revised:2011-06-24 Published:2012-01-10 Online:2012-01-10

PDF

1420

被引次数

6 | 3

摘要：

采用聚醚型甲苯二异氰酸酯（TDI）聚氨酯预聚体与3,3′-二氯-4,4′-二氨基二苯基甲烷（MOCA）、氨丙基三乙氧基硅烷（APTEOS）和正硅酸乙酯（TEOS）交联反应，制备耐温型有机-无机杂化聚氨酯复合材料。 通过傅里叶红外光谱仪（IR）、热重分析仪（TGA）、摩擦试验机和硬度计等技术对制备的材料进行了结构表征和性能测试，结果表明，硅氧网络的引入使聚氨酯复合材料的热稳定性得到了提高，同时该材料具有极低的摩擦系数（200 r/min以上，摩擦系数在0.001左右），硬度在92 A左右。 该有机无机杂化聚氨酯复合材料已满足了水润滑轴承在耐摩擦、高承载、易加工等方面的要求。

关键词: 聚氨酯, 硅烷偶联剂, 溶胶-凝胶法, 有机-无机杂化, 水润滑轴承

Abstract:

Organic-inorganic hybrid polyurethane composites with excellent heat-resistance were synthesized via reaction of toluene-2,4-diisocyanate(TDI) prepolymer, 3,3-dichloro-4,4-diamino diphenylmethane(MOCA), aminopropyl triethoxysilane(APTEOS) and tetraethoxysilane(TEOS). Molecular structures and properties of the material were characterized by IR, TGA, friction tester and hardness analyzer. Thermal stabilities of the composites were greatly improved due to the introduction of the Si—O networks into the molecules. These materials show rather low friction coefficient(about 0.001 as speed higher than 200 r/min) and appropriate hardness(shore 92 A) for water-lubricated bearings application. The results confirmed that the organic-inorganic hybrid polyurethane composites prepared in this work were reliable for water-lubricated bearings production due to the excellent performances of wearability, high loadability and easy processibility.

Key words: polyurethane, silane coupling agent, sol-gel method, organic-inorganic hybrid, water-lubricated bearing

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