真空负压成型聚乙烯醇薄膜袋的研制  

Preparation of polyvinyl alcohol film bag in vacuum forming

作　　者：樊守贞 

机构地区：[1]河北省优抚医院,河北石家庄050051

出　　处：《河北省科学院学报》2014年第4期75-77,共3页Journal of The Hebei Academy of Sciences

摘　　要：介绍一种适用于薄膜袋真空负压成型的新材料——聚乙烯醇薄膜。以聚乙烯醇为主要成膜物质，研究了增塑剂和成膜温度对聚乙烯醇薄膜性能的影响。研究表明：甘油为增塑剂，其用量在0．39／5～0．5％之间，干燥温度60～70℃，聚乙烯醇薄膜的抗拉强度达35．83MPa，撕裂强度达10．83MPa，其在丙烯酸树脂中具有良好的延伸性，与模型服帖紧密、造型准确且分离型好。A new kind of material-Polyvinyl alcohol film is suitable for film bag vacuum mold- ing. In this experiment, the effect of plasticizer and film forming temperature on the properties of polyvinyl alcohol film is studied. The research showed that;when the dosage of the glycerol as the plasticizer is between 0. 3%～0. 5%, and drying at room temperature, the tensile strength of PVA film is 35. 83MPa, and the tear strength is 10. 83MPa. Furthermore, the PVA film has a good extensibility in acrylic resin, and the film fits the model closely, model- ing accurately and demoulding easily.

关 键 词：聚乙烯醇 真空负压成型 耐油性 增塑性 

分 类 号：TQ325.9[化学工程—合成树脂塑料工业]