Transparent heat-resistant fully-degradable component polylactic acid composite material and preparation method thereof

• Main Authors: ZHAO TIANBAO, CHEN BAOSHU, YANG WENCHAO, WU TING, CHEN YUELING, LI ZHENGQIU
• Format: Patent
• Language: Chinese; English
• Published: 03.09.2021
• Subjects: AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; GENERAL PROCESSES OF COMPOUNDING; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS; WORKING-UP

The invention relates to the technical field of polylactic acid modification, and discloses a transparent heat-resistant fully-degradable component polylactic acid composite material and a preparation method thereof. The composite material comprises polylactic acid and nucleating masterbatch; the nucleating masterbatch comprises high-molecular-weight polylactic acid and a beta-nucleating agent; the composite material comprises the following components in parts by weight: 100 parts of polylactic acid, 3-15 parts of high-molecular-weight polylactic acid and 1-10 parts of the beta-nucleating agent. The invention also discloses a preparation method of the composite material. According to the polylactic acid composite material, the adopted process is simple and easy to operate, and after the transparency-heat resistance is optimized, the polylactic acid composite material can be widely applied to high-performance PLA-based composite materials and manufacturing of important industrial products including medical mat