Abstract
In order to improve the flame retardancy of polyacrylonitrile (PAN) fiber fabric, hydroxyethyl methacrylate (HEMA) was first grafted onto the surface of PAN fiber fabric (PAN-g-HEMA) using ultroviolet (UV)-induced photo graft polymerization technology. Then, the PAN-g-HEMA fabric was reacted with phosphoric acid catalyzed by urea, to successfully obtain the flame retardant PAN fiber fabric (FR-PAN-g-HEMA). The optimum process of grafting was obtained. The structure of the fabrics was characterized with FTIR, XRD, XPS and SEM. The thermal analysis indicates that FR-PAN-g-HEMA fabric has good fire retardant properties with an LOI value of 32%.
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