Study on Anti-mildew Polyethylene Plastic Added with OBPA

DU Lin-xue; LI Xi-hong; LU Shu-lai; WANG Biao; LUO Jin-shan; LIU Hai-jiao

Abstract：The LLDPE/LDPE (3:1) material was used as a substrate and OBPA(10,10'oxybis-phenoxarsine) as an organic anti-mildew filler to improve the mildew proof of PE film. The thickness of 0.016-0.017mm anti-mildew polyethylene(PE)film added with various amount of OBPA including 0.00%, 0.05%, 0.10%, 0.15%, 0.20%and 0.25% were prepared. Results indicated that the samples with OBPA all meet the level 1 standard visibly based on the QB/T2591-2003. With increasing the amount of OBPA, the elongation at break rate, the tensile strength and transparency reduced gradually. And elongation at break rate and the tensile strength of 0.25%OBPA were lower than the blank film 14.84% and 21.28%, respectively. However, adding 0.25% OBPA can increase the heat sealing strength with 27.92% compared with control film. With increasing the amount of OBPA, the etiolation rate and the weightlessness rate were retained after preservation of rape for 12 days at 8℃. The etiolation rate(9.43±0.07%) and the weightlessness rate(1.00±0.04%) of 0.25%OBPA were lower than control (13.21±0.37%and 1.32±0.07%respectively).