PBAT农膜氙灯老化研究  

Study on Characteristics of PBAT Agricultural Film by Xenon Lamp Aging

作　　者：孙梦捷 姚晶晶 郭永昌 SUN Meng-jie;YAO Jing-jing;GUO Yong-chang(Shanghai Institute of Quality Inspection and Technical Research,Shanghai 201114,China)

机构地区：[1]上海市质量监督检验技术研究院,上海201114

出　　处：《包装工程》2022年第21期102-106,共5页Packaging Engineering

基　　金：上海市科学技术委员会研发公共服务平台建设项目(14DZ2293000);上海市市场监督管理局科研项目(2022-51)。

摘　　要：目的利用人工加速氙灯老化试验机对聚对苯二甲酸-己二酸-丁二酯(PBAT)农膜进行人工加速老化试验,明确PBAT农膜在光氧条件下的老化规律。方法利用人工加速氙灯老化试验机对PBAT农膜进行168、336、504和672 h的人工加速老化试验,分析老化时间对PBAT结构及热稳定性的影响。结果随着老化时间的增加,样品羟基指数及断链指数不断增加,羰基指数不断减小,结晶结构被逐步破坏,同时热稳定性变差。从扫描电镜结果来看,随着老化时间的增加,样品表面逐渐出现孔洞,样品结构被逐步破坏。结论PBAT在光氧化、水解等的作用下产生了一系列老化现象,样品的结构和性能均遭到了较大的破坏。The work aims to conduct artificial accelerated aging test on poly(terephthalic acid-adipic acid-butylene)(PBAT)agricultural film to clarify the aging law of PBAT agricultural film under light oxygenphotooxidation condition.Artificial accelerated aging test of PBAT agricultural film was conducted for 168,336,504 and 672 h with an artificial accelerated xenon lamp aging tester,and the effects of aging time on the structure and thermal stability of PBAT were analyzed.The results showed that with the increase of aging time,the hydroxyl index and chain scission index of the samples increased,while the carbonyl index decreased,the crystalline structure was gradually destroyed,and the thermal stability became worse.According to the results of SEM,with the increase of aging time,holes gradually appeared on the surface of the sample and showed considerable brittleness.And the structure of the sample was gradually damaged.On the whole,PBAT produces a series of aging phenomena under the action of photooxidation and hydrolysis,and the structure and properties of the samples are greatly damaged.

关 键 词：聚对苯二甲酸-己二酸-丁二酯 氙灯 加速老化 

分 类 号：TQ320.7[化学工程—合成树脂塑料工业]