Toughening polylactic acid resin composition

A technology of polylactic acid resin and composition, applied in the field of toughening polylactic acid resin composition, can solve problems such as reducing tensile strength, and achieve the effects of improving elongation at break, simple equipment and good comprehensive performance

CN102942772BActive Publication Date: 2014-12-10CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI

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Patent Information

Authority / Receiving Office: CN · China
Patent Type: Patents(China)
Current Assignee / Owner: CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
Publication Date: 2014-12-10

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Abstract

The invention provides a toughening polylactic acid resin composition comprising 100 parts by weight of polylactic acid, 5-25 parts by weight of toughening agent and 0.1-1 part by weight of first antioxidant, wherein the toughening agent is a copolymer of a core-shell structure which takes butadiene-styrene copolymer as a core and takes epoxypropyl methacrylate compolymer as a shell. According to the toughening polylactic acid resin composition provided by the invention, the copolymer of the core-shell structure which takes butadiene-styrene copolymer as the core and takes epoxypropyl methacrylate compolymer as the shell is taken as the toughening agent to toughen polylactic acid, and the toughening agent can be used for effectively improving the breaking elongation, impact strength and tensile strength of the polylactic acid, so that the polylactic acid with good comprehensive performance is obtained. Mechanics performance testing results show that the impact strength of the toughening polylactic acid resin composition provided by the invention reaches up to 66.8KJ / m<2>, the breaking elongation is about 200% and the tensile strength reaches up to 56.4MPa.

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Description

technical field

[0001] The invention relates to the technical field of polymer materials, in particular to a toughened polylactic acid resin composition. Background technique

[0002] Polylactic acid (PLA), also known as polylactide, is polymerized from lactic acid fermented from plant starch. Its source of raw material is sufficient and renewable. The production process is pollution-free, and the product can be biodegraded to realize the cycle in nature. Therefore, polylactic acid is an ideal green polymer material. Polylactic acid has good thermal stability and good solvent resistance, and can be processed in various ways, such as extrusion, spinning, biaxial stretching, injection molding, and blow molding. Products made of polylactic acid are not only biodegradable, but also have good biocompatibility, gloss, transparency, feel and heat resistance, so they are widely used and can be used as packaging materials, fibers and nonwovens, etc. At present, it is mainly used in...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine

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