新型聚乙烯防滑包装材料的制备及其性能研究

以聚乙烯包装薄膜为基材、乙烯-醋酸乙烯酯(EVA)热熔胶为防滑涂层,经热喷涂和后期热处理,制备得到EVA喷涂PE防滑包装材料(E-S-PE)与热处理后EVA喷涂PE防滑包装材料(HE-S-PE)。通过扫描电镜、摩擦因数/剥离实验仪、智能电子拉力试验机进行表征,研究了喷涂定量和后续热处理工艺对材料防滑性能、黏结强度和力学性能的影响,并确定其最优喷涂定量。结果表明:E-S-PE与HE-S-PE的摩擦因数均随EVA喷涂定量的增加先增大后稳定,喷涂定量分别为40 g/m~2和70 g/m~2时,其摩擦因数较大,但其力学性能均随喷涂定量增大而整体下降,且HE-SPE的力学性能较E-S-PE的下降更明显。因此,确定该防滑材料EVA的最优喷涂定量为40 g/m~2。

Preparation and Properties of New Polyethylene Non-Slip Packaging Material

Ethylene vinyl acetate hot melt adhesive was used as anti-skid coating to combine with PE packaging film, EVA sprayed PE anti-skid packaging material (E-S-PE) and heat treatment EVA sprayed PE anti-skid packaging material (HE-S-PE) were prepared after thermal spraying and heat treatment. The effects of spray quantity and heat treatment process on the anti-skid performance, bond strength and mechanical properties of the composites material were studied by means of scanning electron microscope, friction coefficient/peel tester, and intelligent electronic tensile testing machine, and the optimum quantity of spray coating was obtained. The results showed that the friction coefficient of E-S-PE and HE-S-PE increased then stabilized with the increase in spray quantity , and the friction coefficient reach the maximum when spray quantity was 40 g/m2 and 70 g/m2 respectively. However, the mechanical properties of the composite films decreased with the increase in spray quantity, and the mechanical properties of HE-S-PE further decreased more than those of E-S-PE. Therefore, the optimal spraying quantity of the anti-skid material was 40 g/m2.