中国塑料 ›› 2020, Vol. 34 ›› Issue (11): 36-40.DOI: 10.19491/j.issn.1001-9278.2020.11.007

• 材料与性能 • 上一篇    下一篇

PGA/PBAT复合材料的性能及应用研究

冯申1, 温亮2, 孙朝阳3, 计扬3   

  1. 1.神华工程技术有限公司,北京 100012
    2.中国神华煤制油化工有限公司,北京 100012
    3.内蒙古浦景聚合材料科技有限公司,内蒙古 包头 014060
  • 收稿日期:2020-08-17 出版日期:2020-11-26 发布日期:2020-11-20

Properties and Applications of PGA/PBAT Composites

 FENG Shen1,WEN Liang2, SUN Zhaoyang3, JI Yang3   

  1. 1.Shenhua Engineering Technology Co,Ltd,Beijing 100012,China
    2.China Shenhua Coal to Liquid and Chemical Co,Ltd,Beijing 100012,China
    3.Inner Mongolia Pujing Polymer Material Technology Co,Ltd,Baotou 014060,China
  • Received:2020-08-17 Online:2020-11-26 Published:2020-11-20
  • Contact: FENG Shen E-mail:shen.feng.a@chnenergy.com.cn

摘要:

采用熔融共混法制备了一系列不同组分含量的聚乙醇酸(PGA)/聚对苯二甲酸-己二酸丁二醇酯(PBAT)复合材料,对复合材料的耐热性能、力学性能和水气阻隔性能进行了表征。结果表明,当PGA含量为80 %(质量分数,下同)时,注塑样条的拉伸强度为68.80 MPa、断裂伸长率为72.15 %、冲击强度为16.00 kJ/m2、负荷变形温度为120 °C,表明该复合材料可用于制备一次性餐具;当PGA含量为20 %时,吹塑薄膜的纵横向拉伸强度均在25 MPa以上,纵横向断裂伸长率均在600 %以上,表明该复合材料可用于生产膜袋产品;此外,随着PGA含量的增加,PGA/PBAT材料的水气阻隔性能也逐渐增加,其中含20 %PGA的PGA/PBAT复合膜的水蒸气透过率为纯PBAT薄膜的1/7。

关键词: 聚乙醇酸, 聚对苯二甲酸-己二酸丁二醇酯, 耐热性能, 力学性能, 阻隔性能

Abstract:

A series of poly(glycolic acid) (PGA)/poly(butylene adipate-co-terephthalate) (PBAT) compounds at different mass rations were prepared by melt blending, and their heat resistance, mechanical properties and barrier properties were characterized. The results indicated that when the PGA/PBAT mass ratio was set to 80/20, the compounds achieved the tensile strength of 68.8 MPa, elongation at break of 72.15 %, impact strength of 16 kJ/m2, and the load thermal deformation temperature of 120 °C. These results suggested that the compound could be used to produce disposable tableware. When the PGA/PBA mass ratio was set to 20/80, the blown films processed by the compounds achieved the vertical and horizontal tensile strength of above 25 MPa and elongation at break of above 600 %. This indicated that the compounds could be used to produce film bag products. In addition, with the increase of PGA content, the compound exhibited a gradual increase in water barrier properties. For the compound at the PGA/PBAT mass ratio of 20/80, its water vapor transmission rate was just 1/7 of the value of pure PBAT films.

Key words: poly(glycolic acid), poly(terephthalic acid-butanediol adipate), heat resistance, mechanical property, barrier property

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