The mathods for testing the rotary sticky degree of 6% PVB methanol solution and 5% PVB first butyl a lcohol solution indirectly were investigated. The methods are accurate and simple.

• 摘要探讨了用间接法测定6%25聚乙烯醇缩丁醛树脂(PVB)甲醇溶液和5%25聚乙烯醇缩丁醛树脂(PVB)正丁醇溶液的旋转粘度。方法准确可行、简便可靠。