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Citation: FENG Li, LIU Jiong-Tian, SONG Suo-Jiang. Effect of Kaolinite on Thermal Stability,Flame Retardant and Mechanical Properties of Unsaturated Polyester Resin[J]. Chinese Journal of Applied Chemistry, ;2008, 25(12): 1385-1388. shu

Effect of Kaolinite on Thermal Stability,Flame Retardant and Mechanical Properties of Unsaturated Polyester Resin

1.
School of Chemical Engineering and Technology, China University of Mining and Technology, Xuzhou 221008

Corresponding author: FENG Li,
Received Date: 6 December 2007
Available Online: 23 May 2008
Fund Project: 国家自然科学基金资助项目(50574092) (50574092)国家杰出青年科学基金资助项目(50425414) (50425414)教育部重大项目(308011)江苏省青蓝工程 (308011)

Unsaturated polyester resin(UPR)/kaolinite intercalation nanocomposites were prepared by in situ polymerization through UP replacing DMSO in kaolinite/DMSO intercalation usher,which was prepared by sonochemistry technique.The structure of the nanocomposites was characterized by XRD and FTIR.The thermal stability,flame retardant and mechanical properties were also studied.The results show that the layered structure of kaolinite was exfoliated during the formation of unsaturated polyester.The decomposition and mass loss rate decreased by adding kaolinite.After adding a small amount of flame retardant,the nanocomposites are self-extinguished once being taken away from the fire,have no droping and heavy smoke while combusting,and the flame extended length is less than 5 mm.The mechanical properties of the nanocomposites have been improved compared with that of pure UP.All these results are from the kaolinite layers migrating to the surface of materials,which forms compact and hard char protection layer when combusting.
- unsaturated polyester resin,
- Kaolinite,
- nanocomposites,
- in situ polymerization,
- flame retardant,
- forming char
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