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Composite degradable polymer with strong ductility and preparation method thereof

A technology of degrading polymer and ductility, applied in the field of composite degradable polymer and its preparation, can solve the problems of poor ductility and impact resistance, high crystallinity of PHBV, low glass transition temperature, etc. Mechanical properties, effect of increasing tensile and impact strength

Pending Publication Date: 2022-07-19
SHANDONG LECSIN GREEN TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, PHBV has high crystallinity, brittleness, poor ductility and impact resistance, and these problems have also become factors that limit the further expansion of PHBV's application fields.
[0003] Chinese patent CN109593333A discloses a polylactic acid / PHBV composite material, which reduces the crystallinity of PHBV, improves the elongation at break and glass transition temperature, but reduces the breaking strength
As an important biodegradable plastic, PPC (carbon dioxide copolymer) has good toughness and mechanical strength, but PPC has a low glass transition temperature and poor thermal stability.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] The first aspect of this embodiment proposes a composite degradable polymer with strong ductility. The preparation raw materials include 70 parts of PHBV, 30 parts of PPCP, 0.5 part of isophorone diisocyanate, and 1 part of functional auxiliary.

[0041] The elongation at break of the PHBV was 2%, which was purchased from Ningbo Tianan Biomaterials Co., Ltd.

[0042] The PPCP was purchased from Shandong Lianchuang Polymer Co., Ltd.

[0043] The functional additives are stabilizers, mold release agents, and antioxidants, and the mass ratio is 1:0.3:0.2.

[0044] The stabilizer is maleic anhydride and isooctyl dithioacetate dimethyl tin, and the mass ratio is 1:0.3.

[0045] The release agent is zinc stearate.

[0046] The antioxidants are 2,2'-methylenebis(4-methyl-6-tert-butylphenol) and 4,4'-thiobis-(6-tert-butyl-3-methylphenol) ) with a mass ratio of 1:1.5.

[0047] The second aspect of this embodiment proposes a method for preparing a composite degradable polymer...

Embodiment 2

[0052] The first aspect of this embodiment proposes a composite degradable polymer with strong ductility. The preparation raw materials include 60 parts of PHBV, 40 parts of PPCP, 2 parts of isophorone diisocyanate, and 1.5 parts of functional additives.

[0053] The elongation at break of the PHBV was 2%, which was purchased from Ningbo Tianan Biomaterials Co., Ltd.

[0054] The PPCP was purchased from Shandong Lianchuang Polymer Co., Ltd.

[0055] The functional additives are stabilizers, mold release agents, and antioxidants, and the mass ratio is 1:0.3:0.2.

[0056] The stabilizer is maleic anhydride and isooctyl dithioacetate dimethyl tin, and the mass ratio is 1:0.3.

[0057] The release agent is zinc stearate.

[0058] The antioxidants are 2,2'-methylenebis(4-methyl-6-tert-butylphenol) and 4,4'-thiobis-(6-tert-butyl-3-methylphenol) ) with a mass ratio of 1:1.5.

[0059] The second aspect of this embodiment proposes a method for preparing a composite degradable polym...

Embodiment 3

[0064] The first aspect of this embodiment proposes a composite degradable polymer with strong ductility, and the second aspect of this embodiment proposes a preparation method for a composite degradable polymer with strong ductility. Example 1, except that 1.5 parts of isophorone diisocyanate was added.

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PUM

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Abstract

The invention provides a high-ductility composite degradable polymer and a preparation method thereof. The high-ductility composite degradable polymer is prepared from the following raw materials in parts by weight: 1-99 parts of PHBV, 1-99 parts of PPCP, 0.1-20 parts of a compatibilizer and 0.1-15 parts of functional materials. According to the composite degradable polymer disclosed by the invention, by regulating and controlling the adding proportion of the PPCP and the PHBV and combining the specific compatibilizer and various specific functional aids, the production cost is reduced, the crystallization degree of a composite copolymer is reduced, the mechanical property of the composite degradable polymer is improved, and the compatibility, the thermal stability and the light aging resistance of the polymer are improved; the application of the composite copolymer in films, sheets, injection molding products and foaming products is improved, and the method is suitable for large-scale industrial production.

Description

technical field [0001] The invention belongs to the technical field of C08G63 / 64, in particular to a composite degradable polymer with strong ductility and a preparation method thereof. Background technique [0002] PHBV (poly(3-hydroxybutyrate-3-hydroxyvalerate)) is a biodegradable material obtained by microbial fermentation. It has excellent biocompatibility and biodegradability. It is used in medical, food packaging, film Materials, skin care products, manufacturing and other industries have broad application prospects. However, PHBV has high crystallinity, brittleness, poor ductility and impact resistance. These problems have also become factors that limit the further expansion of PHBV applications. [0003] Chinese patent CN109593333A discloses a polylactic acid / PHBV composite material, which reduces the crystallinity of PHBV, increases the elongation at break and the glass transition temperature, but reduces the breaking strength. Chinese patent CN105879111A disclose...

Claims

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Application Information

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IPC IPC(8): C08L67/04C08L69/00C08K5/29C08K5/13C08K5/375
CPCC08L67/04C08L69/00C08L2201/06C08L2201/08C08L2205/08C08K5/29C08K5/13C08K5/375
Inventor 李洪国王勋林闫怡傅海
Owner SHANDONG LECSIN GREEN TECH CO LTD
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