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High-tenacity blocking polylactic alloy material

An alloy material, polylactic acid technology, applied in the field of polylactic acid alloy preparation, can solve the problems of high brittleness, easy notch fracture, poor compatibility, etc.

Inactive Publication Date: 2016-03-30
HUNAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to overcome the defects of poor compatibility, high brittleness, and easy notch fracture of polycarbonate / polyester composite materials, and provide a simple and convenient method for polylactic acid alloy materials with good compatibility and excellent barrier properties. Preparation

Method used

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  • High-tenacity blocking polylactic alloy material

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Embodiment 1

[0028]A high-toughness barrier polylactic acid alloy material, with polylactic acid, polylactic acid-maleic anhydride graft, polyethylene naphthalate, hyperbranched polyester, ethylene / acrylate copolymer, and carbon fiber as main materials . And add a small amount of auxiliary materials, including transesterification catalyst, antioxidant, anti-ultraviolet agent.

[0029] Among the main ingredients, based on 100 parts, polylactic acid is 35 parts, polylactic acid-maleic anhydride graft is 6 parts, polyethylene naphthalate is 30 parts, and hyperbranched polyester is 8 parts. The agent is 4 parts of ethylene acrylic acid, 20 parts of ethylene / butyl acrylate copolymer, and 3 parts of carbon fiber. Among the auxiliary materials, the transesterification reaction catalyst dibutyltin oxide is 0.26 parts, the antioxidant 1010 is 1.5 parts, and the anti-ultraviolet agent UV326 is 1.5 parts.

[0030] Among them, the weight average molecular weight of polylactic acid is 200000g / mol, ...

Embodiment 2

[0036] A high-toughness barrier polylactic acid alloy material, with polylactic acid, polylactic acid-maleic anhydride graft, polyethylene naphthalate, hyperbranched polyester, ethylene / acrylate copolymer, and carbon fiber as main materials . And add a small amount of auxiliary materials, including transesterification catalyst, antioxidant, anti-ultraviolet agent.

[0037] Among the main ingredients, based on 100 parts, polylactic acid is 40 parts, polylactic acid-maleic anhydride graft is 6 parts, polyethylene naphthalate is 25 parts, and hyperbranched polyester is 6 parts. The agent ethylene acrylic acid is 3 parts, the ethylene / ethyl acrylate copolymer is 17 parts, and the carbon fiber is 3 parts. Among the auxiliary materials, the transesterification reaction catalyst dibutyltin oxide is 0.28 parts, the antioxidant 1076 is 1.5 parts, and the anti-ultraviolet agent UV326 is 1.5 parts.

[0038] Among them, the weight average molecular weight of polylactic acid is 300000g / m...

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Abstract

The invention relates to a high-tenacity blocking polylactic alloy material. The alloy material is obtained by taking polylactic acid, carbon fiber, a polylactic acid-cellulose graft, polyethylene naphthalate, superbranched polyester and a flexibilizer as main materials and adding a few of a transesterification catalyst, an antioxidant, an anti-ultraviolet agent and the like, and performing an in-situ reactive extrusion. The polylactic alloy material has excellent mechanical strength and super-strong gas barrier property, has a good degradable characteristic, is simple to process, and can be widely applied to the fields of engineering blocking materials and packaging.

Description

technical field [0001] The invention relates to a preparation method of a polylactic acid alloy, in particular to a preparation method of a polylactic acid alloy having excellent toughness and excellent gas barrier properties. Background technique [0002] Although plastic materials have excellent performance and wide applicability, they are derived from petroleum products and cannot be degraded. In today's resource crisis and environmental pollution are becoming more and more serious, looking for excellent performance and renewable alternative materials has become the current research field in the field of materials. top priority. [0003] Among the current degradable materials, starch has been deeply studied due to its cheap price and wide range of sources, and a variety of daily and industrial products have been prepared through modification and compounding, such as starch-based films, starch tableware, etc. However, starch has its natural defects. Its mechanical prope...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/04C08L51/08C08L67/02C08L67/00C08L23/08C08K13/04C08K7/06C08K5/134B29C47/92B29C48/92
Inventor 陈一
Owner HUNAN UNIV OF TECH