中国塑料 ›› 2021, Vol. 35 ›› Issue (10): 21-25.DOI: 10.19491/j.issn.1001-9278.2021.10.004

• 材料与性能 • 上一篇    下一篇

聚碳酸亚丙酯生物降解渗水地膜的研制及性能分析

毕昕媛1, 姚建民1,2()   

  1. 1.山西农业大学农业经济管理学院,太原 030006
    2.山西微通渗水膜生物科技有限公司,太原 030006
  • 收稿日期:2021-01-29 出版日期:2021-10-26 发布日期:2021-10-27
  • 基金资助:
    国家重点研发计划项目(2018YFD1001000)

Preparation and Performance Analysis of PPC⁃based Biodegradable Water­Permeable Mulch Film

BI Xinyuan1, YAO Jianmin1,2()   

  1. 1.College of Agricultural Economics and management,Shanxi Agricultural University,Taiyuan 030006,China
    2.Micropermeable Membrane Biotechnology Co,Ltd,Taiyuan 030006,China
  • Received:2021-01-29 Online:2021-10-26 Published:2021-10-27
  • Contact: YAO Jianmin E-mail:841952252@qq.com

摘要:

为了解决农田白色污染问题,选用大分子聚碳酸亚丙酯(PPC)和聚己二酸丁二醇酯/对苯二甲酸丁二醇酯(PBAT)两种生物降解材料以及强力渗水助剂为原料制备PPC生物降解渗水地膜,采用多次吹膜测试法对地膜的配方和工艺方案进行了优选,并通过万能拉力测试机、紫外老化试验箱等对地膜的力学性能和降解性能进行了表征。结果表明,按照优选方案A9A2的配方和工艺,结合渗水地膜加工工艺,可以成功制备厚度为(0.007±0.002) mm的薄型PPC生物降解渗水地膜;以A9A2为基础并进行优化处理后的工艺技术试制的6个产品的力学性能均能够达到GB/T 35795—2017标准要求;0.007 mm PPC生物降解渗水地膜60 d后开始出现横纵向裂口,180 d后降解率为77.06 %,365 d后降解率为95.72 %。

关键词: 聚碳酸亚丙酯, 聚己二酸丁二醇酯/对苯二甲酸丁二醇酯, 生物降解, 渗水地膜, 工艺

Abstract:

To solve the problems from the white pollution in farmlands, macromolecular poly(propylene carbonate) (PPC) and poly(butylene adipate-co?butylene terephthalate) (PBAT) were selected as two types of biodegradable materials together with powerful water permeability additives to prepare the PPC biodegradable water-permeable mulch films. The formulation and processing technology of the mulch films were optimized using the multi?blow film method, and their mechanical properties and degradation performance were characterized using a universal tensile tester and ultraviolet aging test box. The results indicated that according to the optimized formulation and processing technology of the preferred scheme A9 and A2, a thin PPC-based biodegradable water-permeable mulch film with a thickness of (0.007±0.002) mm was successfully prepared using a water-permeable mulch film processing technology. The mechanical properties of six products trial-produced based on the schemes A9 and A2 could meet the requirements of GB/T 35795-2017. The membrane surface of the mulch film with a thickness of 0.007 mm began to crack within 60 days, and its degradation degree was 77.06 % and 95.72 % within 180 and 360 days, respectively.

Key words: poly(propylene carbonate), poly(butylene adipate-co-butylene terephthalate), biodegradability, water-permeable film, process

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