具有除草功能的薄膜用填充母料的研制

Preparation and Research on Filled Masterbatch with Weeding Function Used for Film

分别以低密度聚乙烯(PE–LD)(2012TN26)、PE–LD(1C7A)、乙烯–乙酸乙烯酯塑料(EVAC)、线性低密度聚乙烯(PE–LLD)、乙烯–辛烯共聚弹性体(POE)、PE回收料、PE–LLD粉料为载体树脂,以Ca CO3、滑石粉、新型矿物质填料N、凹凸棒土为母料核制备了薄膜用填充母料,用转矩流变仪分析了载体树脂和母料核对母料加工性能的影响,并将添加除草剂等制成的填充母料应用于吹塑薄膜生产。结果表明,以PE–LD(1C7A)作为载体,Ca CO3为母料核预制的填充母料的工艺性能较好;除草剂与填充剂一起加入制备母料的工艺可行;含除草剂的填充母料添加不超过10%时对薄膜的力学性能影响不大,并可赋予薄膜一定的除草功能。母料应用于塑料薄膜的加工不但可以降低成本,还赋予塑料薄膜优异的性能。

Using low density polyethylene （PE-LD）（2012TN26）, PE-LD（1C7A）, ethylene-vinyl acetate plastics（EVAC）, linear low density polyethylene（PE-LLD）, ethylene-octene copolymer, recycled PE, PE-LLD powder （7042） as the carrier respectively, using CaCO3, talcum powder, new type mineral filler N, attapulgite clay as nuclear materials, the filled masterbatch for film was prepared. The effects of carriers and nuclear materials on the processing performance of mastbatch were analyzed by torque rheometer, and the filled master batch which added herbicides was used to prepare film. The results show that when using PE LD（1C7A） as carrier and CaCO3 as nuclear material, the masterbatch has good processability. Herbicides can be used to prepare filled masterbatch for film application. When the usage of herbicides is no more than I0%, the mechanical properties of the film only decrease a little, and as the same time, the film has a function of weed controlling. The application of masterbatch in plastic film t^rocessin~ could not only reduce costs, but also endow excellent oerformance for plastic films.