Page 53 - 《橡塑技术与装备》2019年24期（12月下半月塑料）

工艺与设备 刘玲 等·聚乙烯醇的熔融加工工艺与性能研究

图 4 聚乙烯醇复合材料低倍率 SEM 图像 图 5 聚乙烯醇复合材料高倍率 SEM 图像

塑料产品。 量为 30 份时，聚乙烯醇产品的综合力学性能最为优异。
（2）增塑剂的增加，使得聚乙烯醇的拉伸强度降
低，断裂伸长率增加，结晶度下降。 参考文献 ：
[1] 王天华，杨菲，于凤琴，等 . 聚乙烯醇 (PVA) 市场分析与展
（3）轻质碳酸钙的添加，使得聚乙烯醇产品的拉
望 [J]. 山东化工，2016，45(02):49~50.
伸性能、冲击韧性先增加后减小。 [2] 金东 . 我国聚乙烯醇生产技术研究进展 [J]. 精细与专用化学
（4）当增塑剂添加量为 20 份，轻质碳酸钙的添加 品，2018，26(01):44~47.

Study on melting process and properties of polyvinyl alcohol

Liu Ling, Yang Jing, Zhang Liangliang, Wang Xuanlun
(College of Materials Science and Engineering, Chongqing University of Technology, Chongqing 400054,
China)
Abstract: In this paper, the melting process and properties of polyvinyl alcohol are studied. Polyvinyl
alcohol is a kind of biodegradable polymer material, but the molecular chain of polyvinyl alcohol contains
a lot of hydroxyl, which is easy to form a large number of hydrogen bonds within or between molecules. The
melting temperature is higher than the decomposition temperature, so the melting process is difficult. In this
experiment, glycerin and erucic acid amide are used as plasticizer to reduce the melting point of PVA, so
that it can be melted under suitable processing technology. Polyvinyl alcohol is modified with light calcium
carbonate as filler. The experimental results show that the tensile strength is improved obviously when the
plasticizer is 20 phr and the light calcium carbonate is 30 phr.
Key words: polyvinyl alcohol; melt processing; calcium carbonate; modification
(R-03)

2019 第 45 卷 ·37·
年