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High-strength high-toughness fully-degradable bio-polyester composite material and preparation process thereof

A composite material and bio-polyester technology, which is applied in the field of preparation of bio-polyester composite materials, can solve the problems of poor compatibility and poor mechanical properties of biomass composite materials, shorten crystallization time, improve flexibility, and improve dispersion Effect

Active Publication Date: 2019-10-22
深圳市广宇环保科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a polylactic acid composite material with excellent strength and toughness in order to overcome the defects of poor compatibility and poor mechanical properties of biomass composite materials

Method used

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  • High-strength high-toughness fully-degradable bio-polyester composite material and preparation process thereof
  • High-strength high-toughness fully-degradable bio-polyester composite material and preparation process thereof

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specific Embodiment 2

[0078] A high-strength and fully degradable bio-polyester composite material and its preparation process, using aliphatic polycarbonate, lactic acid, poly(β-hydroxybutyrate-co-β-hydroxyvalerate), four-armed polyethylene glycol propionaldehyde, Chitosan and eight-arm polyethylene glycol cage polysilsesquioxane, stannous octoate, stannous chloride, melt enhancer and antioxidant are prepared by reactive extrusion. The ratio of parts by mass is as follows:

[0079] Aliphatic polycarbonate 14.5 parts

[0080] Lactic acid 18.5 parts

[0081] Poly(beta hydroxybutyrate-co-beta hydroxyvalerate) 20.5 parts

[0082] Four-arm polyethylene glycol propionaldehyde 4.5 parts

[0083] Chitosan 14.5 parts

[0084] Eight-arm polyethylene glycol cage polysilsesquioxane 2.1 parts

[0085] 0.2 parts of stannous chloride

[0086] Stannous octoate 0.25 parts

[0087] Melt enhancer 4 parts

[0088] Antioxidant 1.5 parts.

[0089] The number average molecular weight of the aliphatic polycarbon...

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Abstract

The invention relates to a high-strength high-toughness fully-degradable bio-polyester composite material and a preparation process thereof. The bio-polyester composite material is characterized by being prepared from aliphatic polycarbonate, lactic acid, poly(beta-hydroxybutyrate-co-beta hydroxyvalerate), four-arm polyethylene glycol propionaldehyde, chitosan and eight-arm polyethylene glycolpolyhedral oligomeric silsesquioxane, stannous octoate, stannous chloride, a melt enhancer and an antioxidant through reactive extrusion. The biomass composite material is simple in processing technology,has excellent strength and toughness, can realize full degradation, and can be applied to packaging and industrial fields requiring high strength and toughness.

Description

technical field [0001] The invention relates to a preparation method of a biological polyester composite material, in particular to a preparation method of a fully degradable biological polyester composite material with high strength and toughness. 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, various biodegradable materials are used in plastic replacement. Such as starch, polylactic acid, biopolyester, etc. 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 modi...

Claims

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Application Information

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IPC IPC(8): C08L69/00C08L67/04C08L5/08C08L71/02C08L83/12C08L23/08C08K5/13C08L33/04C08G63/06C08G63/78
CPCC08G63/06C08G63/78C08L67/04C08L69/00C08L2201/06C08L2205/025C08L2205/035C08L2205/24C08L5/08C08L71/02C08L83/12C08L23/0853C08K5/13C08L33/04
Inventor 陈一
Owner 深圳市广宇环保科技有限公司
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