摘要
以淀粉和PVA(聚乙烯醇)为主要原料,用流延法制造淀粉塑料膜(简称SP膜)。所得薄膜的淀粉含量为60%左右,比重0.91、厚度0.07mm、吸水率0.6%、耐热温度135℃、拉伸强度35.8~39.5MPa、断裂伸长率400~420%、撕裂强度140~150N/M。该膜作为降解地膜使用时具有与PE膜相似的保温性能,其自降解性能良好,在3~6月膜能全部降解。文中还对SP膜性能的改进、淀粉与PVA的配比、SP膜的耐水性等进行了研讨。
With starch and PVA as basic raw materials, starch—plastics film(SP film) was produced by casting method. The starch content of the SP film was absorption 60%, specific gravity 0.91, thickness 0.07mm, water absorption 0.6%, heat resistance 135℃, tensile 420%, tearing strength 140—150N/m. When used as degradable agricultural film, the SP film had the same heat retention as PE film, and good self—degradability, could be degraded within 3~6 months. The improvement on the properties of the SF film, the mixing ratio of starch and PVA, and the water resistance of the SP film were also studied in this paper.
出处
《塑料工业》
CAS
CSCD
北大核心
1992年第1期25-28,共4页
China Plastics Industry