我国农膜行业现状的分析及发展对策（2020年）

从市场角度分析了我国农膜行业的现状，并提出了一些对策。2020年预计农膜（棚膜、地膜）全国总使用量约为2 200 kt。针对行业存在问题，提出一些对策，以促进农膜行业更健康地发展。     

我国农膜行业现状的分析及其发展对策（2010年）

从市场角度分析了我国农膜行业的现状并提出了一些对策。2010年预计实现棚膜覆盖栽培面积为2.8×1010 m2、地膜覆盖栽培面积为1.8×1011 m2;全国农膜制造企业1000多家,年生产能力超过2000 kt;农膜（棚膜、地膜）全国总用量约2200 kt;针对行业存在的问题,提出了加快企业重组、注重企业科技进步、整合行业链、促进农膜消费和服务等对策,以促进农膜行业更健康地发展。     

十种塑料制品市场前景仍然看好

1农用塑料制品棚膜、地膜、青饲膜、遮阳网等是当前及今后一个时期应用和发展的重要农用覆盖材料。我国已成为世界上农膜产量和使用量最大的国家。     

PE无滴棚膜及其防雾滴效果的研究

ＰＥ无滴棚膜及其防雾滴效果的研究孔卫东，王廷龙（通化市二轻工业研究所１３４００１）（通化市第三塑料厂１３４００１）０前言目前，我国很多ＰＥ农膜生产厂家都相继开发无滴棚膜。由于其密度小，复盖面积大，成本低，比较受用户欢迎。但其透气性比ＰＶＣ农膜高，且普...     

生物降解淀粉塑料及薄膜

一、开发降解地膜的必要性目前我国是世界上农膜覆盖面积最大的国家,超过西方发达国家地膜用量的总和。1990年我国地膜覆盖面积达4000万亩,棚膜面积220万亩,全国地膜用量为50万吨,预计到本世纪末,我国棚、地膜覆盖总面积将翻一番。目前,国产地膜是由高压聚乙烯经过高温吹塑而制成,这种薄膜抗生物降解,易老化、破碎,其残体遗留田间,清除困难,阻     

可生物降解农用地膜研究现状及发展

地膜是继种子、农药、化肥之后的第四大农业生产资料。我国作为最大的农膜消费国,传统农膜的主要成分是不可降解聚乙烯PE,农膜残留对各地土壤造成了不同程度的污染。生物降解农用地膜具有原材料丰富、成本低、理化性能良好、环境友好等特点。综述了可生物降解农用地膜的种类及其应用效果,重点介绍生物可降解纸地膜、塑料地膜与可喷涂地膜的研究,并提出生物降解农用地膜的发展前景。     

中国聚烯烃功能性农膜研究及应用进展

介绍和评述了我国聚烯烃功能性农膜在降解、除草、光质调节、耐老化、流滴、消雾、保温、光转换等功能方面的研究开发及应用概况 ,并提出发展建议。     

农用棚膜的选材要求

介绍了农用棚膜所应用的塑料原辅材料、功能助剂,农膜选材判定方法等     

阻隔紫外线聚烯烃棚膜研究开发的进展

阐述了棚膜阻隔紫外线与栽培作物生长发育及抑制作物病害的关系，概述了我国农用聚烯烃棚膜透过紫外线的基本情况与国外研究开发的阻隔紫外线棚膜，讨论了阻隔紫外线棚膜开发中的有关技术问题。     

农用聚烯烃棚膜功能化技术的创新

简述了功能性棚膜基础树脂的技术要求和我国近年来研究开发的高效耐老化体系、流滴消雾体系、转光剂应用效果,论述了EVA多功能棚膜、聚烯烃长寿棚膜、茂金属聚乙烯棚膜和专用化棚膜的性能特点,以及外涂型流滴消雾剂开发应用进展情况,并提出了发展建议.     

可降解液体地膜的研究现状及应用展望

系统归纳了一种完全可生物降解农业覆盖材料——可降解液体地膜的种类、特点和性能,重点介绍和分析了基于高分子接枝共聚机理的天然高分子材料类液体地膜的代表性技术及其制备机理。同时,对国内外代表性液体地膜材料的应用现状及效果进行了评估,并针对目前液体地膜的发展难点提出见解,以期为新型液体地膜材料的开发及其性能的提升提供技术支撑。     

聚乙烯转光棚膜的加工及应用研究

本文对聚乙烯转光棚膜的加工和光转换剂的作用、配比关系及物理性能进行了讨论。     

Fluid biomulching based on poly(vinyl alcohol) and fillers from renewable resources

This article reports on the results obtained in an investigation on the application of biodegradable polymeric materials in the agricultural practice of mulching. Particular attention has been devoted to the effect of biobased mulching films generated in situ by low‐pressure spraying of polymeric water dispersions on the various cultivars. In a field trial, the effectiveness of the hydromulching (liquid‐mulching) technique was assessed by the monitoring of the growth and yield of lettuce and corn, which were used as reference plants. Conventional plastic films and straw mulching (SM) were compared with liquid‐mulching treatments based on poly(vinyl alcohol) and natural fillers derived from agroindustrial wastes (sugar cane bagasse, wheat flour, saw dust, and wheat straw). An improvement of the biomass yield of the two selected plants with respect to conventional polyethylene mulching was attained in various liquid‐mulching formulations with positive effects on the maintenance of soil structure. Alternative fluid‐mulching treatments based on biodegradable components were effective in preserving soil aggregates and improving some crop growth parameters. © 2007 Wiley Periodicals, Inc. J Appl Polym Sci, 2008     

北方越冬日光温室用PE,EVA棚膜有关功能问题的研究

论述了添加保温剂对棚膜散射光透过比率及棚内增温效果的影响,并就改进棚膜透光性,保温性,防雾滴性等技术问题提出了一些看法。     

Film Blowing of Biodegradable Polymer Nanocomposites for Agricultural Applications

Films for agricultural applications, such as greenhouses films or mulching films are generally made of polyolefins such as linear low-density polyethylene (LLDPE) or low-density polyethylene. However, the use of biodegradable and/or compostable polymers is increasing, which enjoy the additional advantage that they can be left on the site since a fine life would be gradually assimilated to the underlying soil. Nevertheless, biodegradable polymeric films often do not have suitable mechanical performances. In this work, biodegradable polymer-based nanocomposite films are prepared by film blowing and compared with traditional LLDPE based nanocomposites. In particular, a biodegradable polymer blend and two different inorganic nanofillers (an organo-modified clay and a calcium carbonate with a hydrophobic coating) are used for the preparation of the nanocomposites. A detailed investigation of obtained materials is performed through rheological, mechanical, and optical characterizations. Adding nanofillers led to an increase of rigidity and tear strength of blown films without negatively affecting their ductility.     

农用聚烯烃棚膜防老化体系的持久性验证

简要分析了国内农用聚烯烃防老化棚膜存在的问题，通过东北和西南地区试验验证了光稳定剂（6911）/抗氧剂（B215）防老化体系对聚烯烃棚模的防老化持久性效果。     

PE,EVA流滴减雾棚膜的开发与应用

概述了近年来PE、EVA流滴减雾棚膜的发展概况 ,讨论了流滴减雾机理 ,介绍了减雾剂的主要品种及其特性 ,指出了棚膜流滴减雾效果的影响因素和存在的主要问题 ,对流滴减雾体系和流滴减雾棚膜的开发应用提出了建议     

Green composites and blends from leather industry waste

Blends based on protein hydrolysate (PH), derived from waste products of the leather industry, and poly(ethylene‐co‐vinyl acetate) (EVA), were obtained by reactive blending and their physico‐chemical properties as well as their mechanical and rheological behavior were evaluated. The effect of vinyl acetate content and of a transesterification agent added to increase interaction between polymer and bio‐based components were investigated. Novel biodegradable polymeric materials for spray mulching coatings were also obtained from hydrolyzed proteins and end‐functionalized poly(ethylene glycol) (PEG), which was used as crosslinking agent. These products, almost entirely obtained from renewable sources, represent a new type of biodegradable material which looks promising for several applications, for instance in packaging or in agriculture as transplanting or mulching films with additional fertilizing action of PH. POLYM. COMPOS., 37:3416–3422, 2016. © 2015 Society of Plastics Engineers     

棚膜用聚乙烯的开发与应用

介绍了国内农用棚膜的发展、应用以及功能性棚膜的研究进展。综述了功能性棚膜用基础树脂的生产开发、性能及应用现状。基础树脂对棚膜的耐老化、透光性等性能起着重要的作用。功能棚膜比例不断提高和开发专用树脂是今后的发展趋势。     

Degradation in soil behavior of artificially aged polyethylene films with pro‐oxidants

Bio‐based, biodegradable in soil, as well as degradable polyethylene mulching films with pro‐oxidants, have been introduced in the market in an effort to deal with the serious problem of managing plastic waste streams generated from conventional mulching films. In a previous experimental investigation, a series of naturally degraded under water melon cultivation conditions linear low density polyethylene (LLDPE) mulching films with pro‐oxidants, buried in the field for 8.5 years, were recovered intact even though undergoing a continuous slow abiotic degradation in soil. The aim of the present article was to simulate the behavior of the LLDPE mulching films with pro‐oxidants under a much longer time‐scale (e.g. some decades). Toward this purpose, samples of LLDPE with pro‐oxidants film were artificially degraded to simulate severe degradation/fragmentation of these films while been buried in the soil for many years, following the end of the cultivation season. Further degradation of these severely degraded samples was investigated by burying them in the soil over a period of seven years. During this burial period, all degradation parameters and their evolution with time were measured. The artificially degraded LLDPE film samples with pro‐oxidants, in contrast to the naturally degraded film that remained intact for 8.5 years, were gradually transformed into tiny micro‐fragments in the soil. These fragments, through a continuing abiotic degradation process under natural soil conditions are eventually transformed into invisible micro‐fragments. The fate of these micro‐fragments and their long‐term impact to the environment and human health is unpredictable. © 2015 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2015 , 132, 42289.