Heat-resistant poly(butylenes succinate) and preparation method thereof

A technology of polybutylene succinate and succinic acid, which is applied in the field of polymer materials, can solve the problems of small improvement of heat resistance, large amount of nucleating agent added, complicated process, etc., so as to improve the heat resistance. , the effect of high molecular weight and simple polymerization process

Inactive Publication Date: 2017-01-04
HANGZHOU XINFU TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the literature reports that PBS materials mainly adopt the method of adding nucleating agent to improve the heat resistance of the material: the addition of nucleating agent is 1~6%, and the heat distortion temperature of PBS is increased by 4~18°C, but the existing process is complicated. , the amount of nucleating agent added is large, and the improvement of heat resistance is small

Method used

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  • Heat-resistant poly(butylenes succinate) and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Add 6.86Kg succinic acid and 7.32Kg 1,4-butanediol into the reaction kettle, stir evenly to carry out esterification reaction, control the temperature at 230~250°C, wait until the water output reaches 90% of the theoretical water output, and the esterified product is transparent The reaction was complete upon clarification. Add 28g of tetrabutyl titanate dropwise to the esterified product to start polycondensation, the pre-shrinkage vacuum degree is 2000~5000Pa, and the final polycondensation vacuum degree is 20~300Pa. The temperature is controlled at 230~260°C until the stirring current stops rising, the polycondensation stage is completed, and a white polymer is obtained. The number average molecular weight measured by GPC test method is 47,300, and the molecular weight distribution is 1.98.

Embodiment 2

[0028] Add 6.86Kg succinic acid and 7.32Kg 1,4-butanediol into the reaction kettle, stir evenly to carry out esterification reaction, control the temperature at 230~250°C, wait until the water output reaches 90% of the theoretical water output, and the esterified product is transparent The reaction was complete upon clarification. Add 28g of tetrabutyl titanate dropwise to the esterified product, add 600g of inorganic nucleating agent talc powder, and start polycondensation. The vacuum degree of pre-shrinkage is 2000~5000Pa, and the vacuum degree of final polycondensation is 20~300Pa. The temperature is controlled at 230~260°C until the stirring current stops rising, the polycondensation stage is completed, and a white polymer is obtained. The number average molecular weight measured by GPC test method is 69,800, and the molecular weight distribution is 1.96. Wherein, the molar ratio of the hydroxyl group to the carboxyl group of the polymerized monomer is 1.4, and the theore...

Embodiment 3

[0032] Add 6.86Kg succinic acid and 7.32Kg 1,4-butanediol into the reaction kettle, stir evenly to carry out esterification reaction, control the temperature at 230~250°C, wait until the water output reaches 90% of the theoretical water output, and the esterified product is transparent The reaction was complete upon clarification. Add 28g of tetrabutyl titanate dropwise to the esterified product, add 600g of inorganic nucleating agent talc powder, and start polycondensation. The vacuum degree of pre-shrinkage is 2000~5000Pa, and the vacuum degree of final polycondensation is 20~300Pa. The temperature is controlled at 230~260°C. When the stirring current reaches a certain value, the reaction is terminated and a white polymer is obtained. The number average molecular weight measured by GPC test method is 18,900, and the molecular weight distribution is 1.62. Wherein, the molar ratio of the hydroxyl group to the carboxyl group of the polymerized monomer is 1.4, and the theoretic...

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Abstract

The invention relates to a heat-resistant poly(butylenes succinate) and a preparation method thereof. According to the invention, the poly(butylenes succinate) having high molecular weight, biodegradablity and high heat deformation temperature is prepared by combining a mico-crosslinking process and a nucleating agent addition process through a melt polycondensation one-step method. The method is simple in process and simple to operate, and can realize continuous production.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to a heat-resistant polybutylene succinate and a preparation method thereof. Background technique [0002] Polybutylene succinate (PBS) is prepared by polycondensation of succinic acid and butanediol. Its monomers come from a wide range of sources. It is not only prepared by relying on petroleum resources, but can also be prepared by biological fermentation. PBS is a typical semi-crystalline thermoplastic aliphatic polyester plastic, with good biodegradability, excellent mechanical properties, between polyethylene and polypropylene, with good transparency, gloss and printing performance , excellent molding and processing performance, is a kind of green environment-friendly polymer polyester material with broad application prospects in synthetic biodegradable materials. [0003] PBS can be used in the national economy and people's livelihood fields such as pack...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G63/16C08G63/20C08G63/52C08G63/78C08K3/34C08K3/36C08K5/098C08K3/22C08L67/02C08L67/06C08L29/14
CPCC08G63/16C08G63/20C08G63/52C08G63/78C08G2230/00C08K3/22C08K3/34C08K3/346C08K3/36C08K5/098C08K2003/2241C08L67/02C08L2201/06C08L2201/08C08L2205/02C08L2205/24C08L67/06C08L29/14
Inventor 殷宏军戴清文刘岗王青青俞利生李新方柏勇
Owner HANGZHOU XINFU TECH CO LTD
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