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Citation: FANG Shou-Lin, WU Li-Lin. Preparation and Properties of Silicone Rubber/organic-attapulgite Nanocomposites[J]. Chinese Journal of Applied Chemistry, ;2009, 26(4): 383-387. shu

Preparation and Properties of Silicone Rubber/organic-attapulgite Nanocomposites

FANG Shou-Lin ^, ,
WU Li-Lin

1.
Department of Fundament, PLA Automobile Management College, Bengbu 233011

Corresponding author: FANG Shou-Lin,
Received Date: 12 March 2008
Available Online: 6 May 2008

Attapulgite was firstly purified and modified by silane coupling agent KH-570,and then silicone rubber(SR)/organic-attapulgite(OAT) nanocomposites were prepared in a two-roll mill.Fourier transform infrared(FTIR) spectrometry and transmission electron microscopy(TEM) were used to characterize the modification of AT.The vulcanization behavior,mechanical properties,and thermal stability of the SR/OAT nanocomposites were studied.The results show that OAT could reduce the optimum cure time of the SR and increase the minimum and maximum torque values,behaving like a vulcanizing accelerator for the SR.The tensile strength of the nanocomposites increased with OAT content increasing;however,the elongation at break achieved the optimum value at 20 phr OAT loading,which indicates that attapulgite can serve as an effective reinforcing agent for silicone rubber.In addition,thermogravimetric analysis(TGA) results show the incorporation of OAT could improve the thermal stability of the SR/OAT nanocomposites.
- silicone rubber,
- attapulgite,
- nanocomposite,
- mechanical property,
- thermal stability
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