Polyvinyl butyral(PVB)is an important polymer material,which is formed by condensation reaction of polyvinyl acetate or polyvinyl alcohol with n-butyraldehyde.PVB has good transparency,adhesion and film forming compatibility.It is suitable for light resistant,heat resistant,cold resistant,water resistant,impact resistant and other environments,mainly used in safety glass and photovoltaic fields.The preparation process of PVB is complex,and it is difficult to obtain high-purity products by general methods.The core technology is monopolized by foreign countries.At low temperature,the physical properties of PVB are poor.The method of complementary advantages is often used to graft,composite and blend PVB to improve the comprehensive properties of materials.In recent years,the application research and development of PVB has become a hot spot.In this paper,the preparation process of polyvinyl butyral(PVB)in recent years was briefly introduced,and the technical progress in the research,development and application of PVB to modify,composite and blend other functional materials was emphatically described.
关键词
聚乙烯醇缩丁醛/接枝改性/低温耐冲击性/相溶性/共混/制备
Key words
Polyvinyl butyral/Graft modification/Low temperature impact resistance/Compatibility/Blending/Preparation
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