摘要
为推动全生物降解地膜的广泛推广应用,以聚己二酸丁二醇酯-对苯二甲酸丁二醇酯(PBAT)为研究对象,研究了不同老化光源、不同老化时间对PBAT全生物降解地膜断裂强力的影响。结合地膜在新疆库尔勒地区棉花大田自然老化实验数据,选择了紫外光作为地膜人工加速老化试验的光源。进一步研究了PBAT地膜紫外老化的力学性能变化,结合大田自然老化的结果,确定了满足棉花大田要求的PBAT地膜在紫外老化后的断裂强力应大于3.3 N。建立的紫外加速老化方法可以为地膜样品在大田自然老化实验前进行快速的初步筛选,促进全生物降解地膜的研发应用。
In order to promote the application of the fully biodegradable mulching films,poly(butyleneadipate-co-terephthalate)(PBAT)biodegradable mulching films were studied.The effects of aging light sources and aging times on the breaking strength of PBAT fully biodegradable films were investigated.Combined with the natural aging tests of mulching films in cotton field in Korla District,Xinjiang,ultraviolet(UV)was chosen as the light source of artificial accelerated aging tests.The changes of breaking strength of PBAT mulching films during UV aging were further studied.To meet the requirements of cotton growing,the breaking strength of PBAT mulch films after UV aging should be greater than 3.3 N.UV accelerated aging tests could be used for rapid preliminary screening of biodegradable films before natural aging field tests,and it promotes the application of biodegradable films.
作者
罗峻
胡剑灿
王波
LUO Jun;HU Jiancan;WANG Bo(Guangzhou Fibre Product Testing and Research Institute,Guangzhou 510220,China;School of Chemistry and Biological Engineering,Taiyuan University of Science and Technology,Taiyuan 030024,China)
出处
《塑料工业》
CAS
CSCD
北大核心
2022年第12期99-102,共4页
China Plastics Industry
基金
国家市场监督管理总局科技计划项目(2019MK088)
广东省市场监督管理局科技项目(2020CZ06)
山西省重点研发项目(202102040201004)。
关键词
全生物降解地膜
人工老化
大田试验
断裂强力
初筛
Fully Biodegradable Mulching Films
Artificial Aging
Field Test
Breaking Strength
Primary Screening
