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Invention Publication
CN108003581A 一种聚乳酸复合材料及其应用 有权

一种聚乳酸复合材料及其应用
Abstract:
本发明公开了一种聚乳酸复合材料及其应用，包括组分:（A）89-98重量份的聚乳酸；（B）1-4重量份的滑石粉；（C）1-7重量份的增塑剂；其中，所述组分（A）中，聚乳酸的多分散指数P满足如下关系：1.55≤P≤2.02；所述组分（B）中，滑石粉的粒径D（50）满足：1μm≤D（50）≤2.6μm，所述组分（C）中，增塑剂的相对分子量M满足：180≤M≤670。本发明通过研究意外的发现，以多分散指数P满足如下关系：1.55≤P≤2.02的聚乳酸为基体，添加特定范围含量的超细滑石粉作为成核剂，并选用特定分子量的增塑剂作为结晶促进剂，制备得到的聚乳酸复合材料的透光率T≥80%，雾度H≤40%；热变形温度HDT≥90℃，具有明显改善的耐热性和透明性。
Abstract(English):

The invention discloses a polylactic acid composite material and application thereof. the polylactic acid composite material comprises components of (A) 89-98 parts by weight of polylactic acid; (B) 1-4 parts by weight of talcum powder; and (C) 1-7 parts by weight of a plasticizer; wherein in the component (A), the polydispersity index P of the polylactic acid satisfies the following relationship:1.55==80%, a haze H<=40%, and a heat distortion temperature HDT>=90DEG C, and has obviously improved heat resistance and transparency.

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