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Tear-resistant environment-friendly PBSeT copolyester material and preparation method thereof

A copolyester and anti-tearing technology, which is applied in the field of tear-resistant and environmentally friendly PBSeT copolyester materials and its preparation, can solve the problems of poor tear resistance and achieve the effect of improving tear performance and high market value

Active Publication Date: 2021-11-23
ZHONGBEI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the technical problem of poor tear resistance of PBSeT materials, the present invention provides a tear-resistant and environmentally friendly PBSeT copolyester material

Method used

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  • Tear-resistant environment-friendly PBSeT copolyester material and preparation method thereof
  • Tear-resistant environment-friendly PBSeT copolyester material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Through the two-step esterification method, 707g of SeA (sebacic acid), 900g of BDO (1.4-butanediol), 581g of TPA (terephthalic acid), and 2.403g of TME (trimethylolethane) were weighed. Blending under the condition of adding a catalyst and at a temperature of 120-170°C, followed by the first stage of esterification, the pressure is 0.1-0.15MPa, after 1-1.5 hours of esterification; the second stage of esterification starts, and the temperature is raised When the temperature reaches 225°C, 6g of catalyst Tetrabutyl Titanate (tetrabutyl titanate) is added for esterification, and the reaction is about 3-4 hours. When the water produced is equivalent to the theoretical water quality (90-110%); the polycondensation stage begins , add catalyst Tetrabutyl Titanate (tetrabutyl titanate) 3g and raise the temperature to 225°C, the pressure is 600Pa, after polycondensation for 6.5h, when it is found that the torque on the equipment does not change, the polycondensation is complete....

Embodiment 2

[0029] Through the two-step esterification method, 707g of SeA (sebacic acid), 900g of BDO (1.4-butanediol), 581g of TPA (terephthalic acid), and 4.806g of TME (trimethylolethane) were weighed. Blending under the condition of adding a catalyst and at a temperature of 120-170°C, followed by the first stage of esterification, the pressure is 0.1-0.15MPa, after 1-1.5 hours of esterification; the second stage of esterification starts, and the temperature is raised When the temperature reaches 225°C, 6g of catalyst Tetrabutyl Titanate (tetrabutyl titanate) is added for esterification, and the reaction is about 3-4 hours. When the water produced is equivalent to the theoretical water quality (90-110%); the polycondensation stage begins , add catalyst Tetrabutyl Titanate (tetrabutyl titanate) 3g and raise the temperature to 225°C, the pressure is 600Pa, after polycondensation for 6.5h, when it is found that the torque on the equipment does not change, the polycondensation is complete....

Embodiment 3

[0031] Through the two-step esterification method, 707g of SeA (sebacic acid), 900g of BDO (1.4-butanediol), 581g of TPA (terephthalic acid), and 7.209g of TME (trimethylolethane) were weighed. Blending under the condition of adding a catalyst and at a temperature of 120-170°C, followed by the first stage of esterification, the pressure is 0.1-0.15MPa, after 1-1.5 hours of esterification; the second stage of esterification starts, and the temperature is raised When the temperature reaches 225°C, 6g of catalyst Tetrabutyl Titanate (tetrabutyl titanate) is added for esterification, and the reaction is about 3-4 hours. When the water produced is equivalent to the theoretical water quality (90-110%); the polycondensation stage begins , add catalyst Tetrabutyl Titanate (tetrabutyl titanate) 3g and raise the temperature to 225°C, the pressure is 600Pa, after polycondensation for 6.5h, when it is found that the torque on the equipment does not change, the polycondensation is complete....

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Abstract

The invention relates to the field of high polymer materials, and concretely relates to a tear-resistant environment-friendly PBSeT copolyester material and a preparation method thereof. The material is prepared from, by mole, 5 parts of sebacic acid, 10 parts of 1, 4-butanediol, 5 parts of terephthalic acid, 0-0.1 part (0 exclusive) of trimethylolethane and 0-0.06 part (0 exclusive) of tetrabutyl titanate. The preparation method comprises the following steps: blending sebacic acid, 1, 4-butanediol, terephthalic acid and trimethylolethane according to a molar ratio under the condition of not adding a catalyst, and then starting first-stage esterification; and starting second-stage esterification, raising the temperature to a certain temperature, adding a catalyst tetrabutyl titanate for esterification, starting a polycondensation stage when the mass of generated water is equivalent to that of theoretical water, adding the catalyst tetrabutyl titanate, raising the temperature to a certain temperature and then performing polycondensation, and finishing polycondensation when torque on equipment is not changed. The synthesis method provided by the invention greatly improves the tearing property of the environment-friendly PBSeT copolyester material.

Description

technical field [0001] The invention relates to the field of polymer materials, in particular to a tear-resistant and environment-friendly PBSeT copolyester material and a preparation method thereof. Background technique [0002] With the increasing awareness of environmental protection of the government and consumers, research on degradable and recyclable green packaging materials has become a research hotspot in the field of packaging materials. Similarly, this is the only way to solve white pollution and environmental pollution; not only that, it also saves considerable time and cost for solving plastic waste management. [0003] In the past few years, biodegradable materials can be described as blooming everywhere, among which degradable plastics mainly include polybutylene succinate (PBS), polylactic acid (PLA), poly(hydroxyalkanoate) (PHA), Poly(butylene adipate-terephthalate) (PBAT) and poly(decanediol sebacate-butylene terephthalate) (PBSeT) are considered to be mor...

Claims

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Application Information

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IPC IPC(8): C08G63/20C08G63/85
CPCC08G63/20C08G63/85Y02W90/10
Inventor 李迎春李枝茂景心怡张澜郭欣孟祥宁王文生
Owner ZHONGBEI UNIV
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