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Completely biodegradable polyester blend and preparation method thereof

A biodegradable polyester and blend technology, applied in the field of degradable materials, can solve the problems of poor impact toughness, limited wide application, difficult to meet, etc., to improve toughness and barrier properties, good toughness and barrier properties, performance excellent effect

Pending Publication Date: 2020-10-13
长春市联禹化学科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But its impact toughness is poor, about 17kJ / m 2 , which limits its wider application, it is difficult to meet the requirements of various uses

Method used

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  • Completely biodegradable polyester blend and preparation method thereof
  • Completely biodegradable polyester blend and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] The preparation of embodiment 1PBSF

[0026] Add 1,4-butanediol, tetrabutyl titanate, 2,5-furandicarboxylic acid, and succinic acid into the reaction flask, and 1,4-butanediol and total dibasic acid (2,5-furan The molar ratio of dicarboxylic acid and succinic acid) is 3:1, and the molar ratio of 2,5-furandicarboxylic acid to succinic acid is 3:2. Tetrabutyl titanate is 5‰ of the mass of 2,5-furandicarboxylic acid. Nitrogen was blown, at 230°C, mechanically stirred, and reacted for 3 hours. Vacuumize afterwards, react for 5 hours, stop the reaction, and obtain the product.

Embodiment 2

[0027] The preparation of embodiment 2PBAF

[0028] Add 1,4-butanediol, tetrabutyl titanate, 2,5-furandicarboxylic acid, adipic acid into the reaction flask, 1,4-butanediol and total dibasic acid (2,5-furan The molar ratio of dicarboxylic acid to adipic acid) is 3:1, and the molar ratio of 2,5-furandicarboxylic acid to adipic acid is 3:2. Tetrabutyl titanate is 5‰ of the mass of 2,5-furandicarboxylic acid. Nitrogen was blown, at 230°C, mechanically stirred, and reacted for 3 hours. Vacuumize afterwards, react for 5 hours, stop the reaction, and obtain the product.

Embodiment 3

[0030] After weighing PBS and the polyester prepared in Example 2 according to the mass ratio of 4:1, mix them in a mixer at room temperature for 10 minutes, then add them to an extruder, heat them to extrude and granulate, and the extruder and injection molding machine The temperature is 170°C, and the finished product is obtained.

[0031] The properties of the product prepared in Example 3 are shown in Table 1, wherein the tensile properties are tested according to GB / T 1040-92, using type I splines, and the tensile speed is 50mm / min; the impact properties are tested according to ASTM D256.

[0032] Measured by Labthink VAC-V2 gas permeation tester, the temperature is 23°C, the humidity is 50%, the diameter of the film is 97mm, and the test area is 38.5cm 2 , the average value of three tests was taken, and the oxygen and carbon dioxide transmission rates of the film are shown in Table 1.

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PUM

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Abstract

The invention provides a completely biodegradable polyester blend and a preparation method thereof, and belongs to the field of degradable materials. The blend comprises the following components in parts by weight: a raw material A: 3-13 parts of polybutylene succinate or polylactic acid, and a raw material B: 1-7 parts of polyester. The invention also provides a preparation method of the completely biodegradable polyester blend, which specifically comprises the following steps: weighing the raw material A and the raw material B according to the proportion, mixing the two raw materials in a stirrer at room temperature for 10 minutes, adding the mixture into an extruder, and carrying out heating for extruding and granulating to obtain the finished product. The polyester blend is high in toughness and good in barrier property.

Description

[0001] field of invention [0002] The invention belongs to the field of degradable materials, in particular to a fully biodegradable polyester blend and a preparation method thereof. Background technique [0003] Due to the shortage of petroleum resources and environmental pollution, bio-based polyesters have been paid more and more attention by people. Many of these bio-based polyesters have been industrialized, such as polylactic acid, polybutylene succinate, and polyethylene furandicarboxylate. [0004] Polybutylene succinate (PBS), usually formed by polycondensation of succinic acid and butanediol, is a completely degradable aliphatic polyester with a melting point of about 110°C and a crystallinity of 30 -60%, the heat distortion temperature can exceed 100°C, the raw materials succinic acid and butanediol can be obtained from biomass resources, and have been industrialized at present. But its impact toughness is poor, about 17kJ / m 2 , which limits its wider applicatio...

Claims

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Application Information

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IPC IPC(8): C08L67/04C08L67/02C08G63/672C08G63/78
CPCC08L67/04C08L67/02C08G63/672C08G63/78C08L2201/06C08L2201/14C08L2205/025C08L2205/02C08G2230/00
Inventor 宋禹
Owner 长春市联禹化学科技有限公司
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