Title :
Photocrosslinking of intumescent halogen-free flame-retardant LLDPE/EVA/IFR blends
Author :
Qu, Baojun ; Wenbao Bao ; Ye, Lei ; Wu, Qianghua ; Ma, Shujun ; Jia, Zhenshan
Author_Institution :
Dept. of Polymer Sci. & Eng., Univ. of Sci. & Technol. of China, Hefei, China
Abstract :
Photocrosslinking of the halogen-free flame retardant linear low density polyethylene /poly(ethylene-co-vinyl acetate) (LLDPE/EVA) blends with the intumescent flame retardant (IFR) of phosphorous-nitrogen compound (NP) in the presence of photoinitiator and multifunctional crosslinker and the characterization of related properties have been investigated successfully. The results from the gel content and heat extension rate (HER) show that the LLDPE/EVA/IFR blends filled with NP are readily photocrosslinked by UV-irradiation of 5 s to obtain a gel content of above 75% and reach the HER value of about 50%. The data from the LOI, UL-94, water-resistant, and mechanical measurements show that photocrosslinking can considerably enhance the mechanical, flame retardant, and water-resistant properties of the LLDPE/EVA/NP samples.
Keywords :
flame retardants; photochemistry; polymer blends; ultraviolet radiation effects; UV-irradiation; heat extension rate; intumescent halogen-free flame-retardant; linear low density polyethylene-poly(ethylene-co-vinyl acetate) blends; multifunctional crosslinker; phosphorous-nitrogen compound; photocrosslinking; photoinitiator; water-resistance; Additives; Dielectric materials; Flame retardants; Materials science and technology; Mechanical factors; Mechanical variables measurement; Polyethylene; Polymers; Testing; Wire; intumescent flame retardant; linear low density polyethylene; photocrosslinking; poly(ethylene-co-vinyl acetate); related properties;
Conference_Titel :
Properties and Applications of Dielectric Materials, 2009. ICPADM 2009. IEEE 9th International Conference on the
Conference_Location :
Harbin
Print_ISBN :
978-1-4244-4367-3
Electronic_ISBN :
978-1-4244-4368-0
DOI :
10.1109/ICPADM.2009.5252471
