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Citation: LI Fang, SHUAI Changgeng, HE Lin, WANG Shiwei, YANG Xiaoniu. Polyurethane Composites for Water-lubricated Bearings Application[J]. Chinese Journal of Applied Chemistry, ;2012, 29(1): 14-17. doi: 10.3724/SP.J.1095.2012.00167 shu

Polyurethane Composites for Water-lubricated Bearings Application

LI Fang ^a ,
SHUAI Changgeng ^a ,
HE Lin ^a ,
WANG Shiwei ^b,, ,
YANG Xiaoniu ^b,,

1.
a Institute of Noise and Vibration, Naval University of Engineering, Wuhan 430033, China;
2.
b Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China

Corresponding author: WANG Shiwei, YANG Xiaoniu,
Received Date: 22 April 2011
Available Online: 27 June 2011

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.
- polyurethane,
- silane coupling agent,
- sol-gel method,
- organic-inorganic hybrid,
- water-lubricated bearing
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