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发明授权
CN1935886B 水溶性可生物降解材料及其制备方法以及注射类成型制品 失效 - 权利终止 转让

水溶性可生物降解材料及其制备方法以及注射类成型制品
摘要：
一种水溶性可生物降解材料，其中，该材料是一种混合物经熔融状态形成的产物，所述混合物含有淀粉、多元醇和含水的聚乙烯醇，所述聚乙烯醇为亲水性聚乙烯醇，以混合物的总量为基准，多元醇的含量为0.1重量％至小于10重量％。本发明提供的水溶性可生物降解材料的熔融温度为140-190℃，分解温度为250-400℃，熔融温度远低于分解温度，因而可实现真正意义上的挤出造粒和注射成型。用本发明提供的水溶性可生物降解材料制得的注射类成型制品具有优异的简支梁冲击强度、拉伸屈服强度、水溶性和生物降解性。
摘要（英）：

The invention relates to water solubility biodegradable material. The material contains the outcome formed by mixture fusing which contains starch, polyhydric alcohol, and aqueous polyvinyl alcohol which has hydrophilicity. Using the mixture total weight as the criterion, the content of the polyhydric alcohol is between 0.1wt% and 10wt%. Its fusing temperature is 140-190 degree centigrade; decomposition temperature is 250-400 degree centigrade. Thus it can realize squeezing granulation and injection molding. The formed water solubility biodegradable material has better simply supported beam impact strength, yield strength in tension, water solubility and biodegradability.

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