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A kind of toughened polybutylene succinate and preparation method thereof

A polybutylene succinate and butanediol technology is applied in the field of toughening polybutylene succinate and its preparation, and can solve the application of low elongation at break, loss of toughening effect, and weakening of polybutylene succinate. The advantages of butylene succinate, etc., to achieve the effect of toughening effect and long-term effect of toughening effect

Active Publication Date: 2019-01-29
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Although polybutylene succinate has many excellent properties, its brittleness, poor impact resistance and low elongation at break severely restrict its application in many fields.
For the brittleness of PBS, some people have tried to improve it by adding a toughening agent, and the addition of some commonly used toughening agents, such as dioctyl terephthalate, polyethylene glycol, glycerin, etc., has improved its toughness, but these The toughening agent will gradually migrate to the surface during use and lose its toughening effect, so that the toughened polybutylene succinate material does not have long-term stability
In addition, as a bio-based plastic, polybutylene succinate has a significant feature that its production does not depend on petrochemical resources. However, most tougheners are currently petrochemical resource products. Under the current environment where petrochemical resources are scarce , which will undoubtedly weaken the advantages of polybutylene succinate as a bio-based material

Method used

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  • A kind of toughened polybutylene succinate and preparation method thereof
  • A kind of toughened polybutylene succinate and preparation method thereof
  • A kind of toughened polybutylene succinate and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Dehydration treatment of 1,4-succinic acid: put a certain mass of 1,4-succinic acid in a vacuum oven, and place it at 60° C. under vacuum for 24 hours to constant weight.

[0025] Synthesis of polyester elastomer: add a certain amount of 1,4-butanedioic acid, 1,4-butanediol, 2,3-butanediol in a three-necked flask, the molar ratio is 1:0.3:0.7, control The reaction temperature of the system is 180°C. After 2 hours of reaction, the temperature of the system is lowered to 100°C, and a tetrabutyl titanate catalyst of 0.1 wt% of the total mass of the above-mentioned reaction monomers is added, and then the temperature is raised to 220°C, and the reaction is carried out under vacuum for 8 hours to obtain poly Ester elastomers.

[0026] Blend ratio: Polybutylene succinate and polyester elastomer are melt blended at mass ratios of 95:5, 90:10, 85:15, and 80:20.

[0027] Preparation of the blend: polybutylene succinate and the polyester elastomer were melt-blended in a Haake in...

Embodiment 2

[0031] The dehydration treatment of 1,4-butanedioic acid: with embodiment 1.

[0032]Synthesis of polyester elastomer: add a certain amount of 1,4-butanedioic acid, 1,4-butanediol, 2,3-butanediol in a three-necked flask, the molar ratio is 1:0.3:0.7, control The reaction temperature of the system is 190°C. After 2 hours of reaction, the temperature of the system is lowered to 100°C, and a tetrabutyl titanate catalyst of 0.1 wt% of the total mass of the above monomers is added, and then the temperature is raised to 230°C, and the reaction is carried out under vacuum for 8 hours to obtain polyester Elastomer, it is placed in a sealed drying tower for later use.

[0033] The proportioning of blend: with embodiment 1.

[0034] Preparation of blend: same as Example 1.

[0035] Preparation of test sample: same as Example 1.

Embodiment 3

[0037] The dehydration treatment of 1,4-butanedioic acid: with embodiment 1.

[0038] Synthesis of polyester elastomer: add a certain amount of 1,4-butanedioic acid, 1,4-butanediol, 2,3-butanediol in a three-necked flask, the molar ratio is 1:0.3:0.7, control The reaction temperature of the system is 170°C. After 2 hours of reaction, the temperature of the system is lowered to 100°C, and a tetrabutyl titanate catalyst of 0.1 wt% of the total mass of the above monomers is added, and then the temperature is raised to 210°C, and the reaction is carried out under vacuum for 8 hours to obtain polyester Elastomer, it is placed in a sealed drying tower for later use.

[0039] The proportioning of blend: with embodiment 1.

[0040] Preparation of blend: same as Example 1.

[0041] Preparation of test sample: same as Example 1.

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Abstract

The invention provides a toughened poly(butylenes succinate) and a preparation method thereof. The toughened poly(butylenes succinate) is prepared according to the following method: performing melt blending on a polyester elastomer and poly(butylenes succinate) at 120-160 DEG C to obtain the toughened poly(butylenes succinate). The polyester elastomer used by the invention is synthesized by using butanediol and other biomass dibasic acid / dibasic alcohol as raw materials. 1,4-succinic acid and 1,4-butanediol chain segments contained in the elastomer have favorable compatibility with the poly(butylenes succinate). Compared with the common toughener such as polyethyleneglycol, the high molecular weight of the polyester elastomer effectively overcomes the out-migration behavior of a toughener from a matrix. Therefore, the polyester elastomer can efficiently toughen the poly(butylenes succinate), and has the long-acting stability for keeping the toughening effect. The elongation at break of the toughened poly(butylenes succinate) is increased to 100%-300%, and the impact strength is increased to 8.2-41.3KJ / M<2>.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a toughened polybutylene succinate and a preparation method thereof. Background technique [0002] Plastic products play an irreplaceable role in people's lives. Traditional plastics are mainly synthesized from petrochemical resources. With the continuous consumption of non-renewable resources such as petroleum, the development of the plastics industry is facing huge challenges. At the same time, the global white pollution caused by a large amount of discarded petroleum-based plastics is increasing. In order to reduce the dependence on non-renewable resources such as petroleum and realize the sustainable development of the polymer material industry, finding environmentally friendly new materials has become a hot research issue. Based on this situation, bio-based polymer materials have attracted more and more attention. [0003] Polybutylene succinate (PBS) is a fatty a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L67/02C08G63/16
CPCC08G63/16C08L67/02C08L2205/025
Inventor 张立群李炎胡潇然耿漪亭王润国
Owner BEIJING UNIV OF CHEM TECH
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