Flammability properties of PI fabric coated with montmorillonite |
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Authors: | Tong Xu Yi Zhong Yan liu Hong Yu Zhiping Mao |
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Institution: | 1. Key Laboratory of Science & Technology of Eco-Textile (Ministry of Education), Donghua University, No. 2999, North Renmin Road, Songjiang District, Shanghai, 201620, People’s Republic of China
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Abstract: | In this study, polyimide (PI) fabric was coated with montmorillonite (MMT) which performed as a kind of flame retardant. Thermogravimetric analysis showed that PI coated with MMT left as much as 69 % char after heating to 700 °C, about 15 % more than uncoated PI fabric. Cone calorimeter testing (heat flux: 60 kW m?2) showed that coated fabric reduced the total heat release and showed resistance to degradation from direct flame. Post-burn residues of samples were examined with SEM and revealed that the weave structure and fiber shape in all coated fabrics were preserved. In addition, heat-insulting test showed that the temperature difference of coated PI could reach 400 °C after 10 min at 800 °C. These results demonstrate that MMT coating is relatively effective for improving flame-retardant behavior to PI fabric. |
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