Preparation method of high-viscosity poly(butylene succinate)/polylactic acid composite material

Abstract

The invention discloses a preparation method of high-viscosity poly(butylene succinate)/polylactic acid composite material. The high-viscosity poly(butylene succinate)/polylactic acid composite material is prepared from the following ingredients of 70 to 90 parts of PBS resin, 10 to 30 parts of PLA resin, 0.5 to 2 parts of crosslinking agent and 2 to 20 parts of auxiliary crosslinking agent. According to the preparation method disclosed by the invention, mechanical properties of yield strength, impact strength and the like of the poly(butylene succinate)/polylactic acid composite material canbe adjusted by adjusting a proportion of PBS resin/PLA resin; the viscosity of the poly(butylene succinate)/polylactic acid composite material can be regulated by adjusting a proportion of the crosslinking agent/the auxiliary crosslinking agent; the tackified poly(butylene succinate)/polylactic acid composite material has the advantages of good mechanical property, high viscosity and biodegradable. The preparation method disclosed by the invention solves the problem that as the PBS resin and the PLA resin have low melt viscosity, the PBS resin and the PLA resin cannot be applied to the fieldsof blow molding, foaming, thermal forming and the like; the poly(butylene succinate)/polylactic acid composite material can replace existing materials of polyolefin, polystyrene and the like to be applied to the fields of blow molding, foaming, thermal forming and the like in the future and has a wide application prospect.

Description

technical field [0001] The invention relates to the technical field of polymer material processing, in particular to a method for preparing a high-viscosity polybutylene succinate / polylactic acid composite material. Background technique [0002] With the continuous strengthening of people's awareness of environmental protection, the problem of "white pollution" caused by non-degradable waste after use of polymer materials has become the focus of attention. Therefore, more and more work is focused on the development and development of biodegradable polymer materials. At present, many achievements have been made in the development and research of biodegradable polymer materials at home and abroad, and some of them have been commercialized. Biodegradable polymer materials not only maintain the excellent performance of traditional polymer materials during use, but also can be degraded into carbon dioxide and water under the action of microorganisms in the soil after use, withou...

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Problems solved by technology

[0005] Looking at the methods of viscosity-increasing modification of PBS and PLA in the existing reports, the research mainly focuses on the viscosity-increasing modification of single PBS and PLA materials, while the viscosity-increasing modification of PBS / PLA composite materials is less common.

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