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Polybutylene succinate ionomer with low molecular weight and high melt viscosity and its preparation and microcellular foaming material based on it and its application

A technology of polybutylene succinate and low molecular weight, which is applied in the field of microcellular foaming materials, polybutylene succinate ionomer and its preparation, and can solve the problem of difficult processing and difficult control of hexamethylene The amount of base diisocyanate, easy to produce cross-linking and other problems, to achieve high foaming ratio, easy control of cell size, and low price

Active Publication Date: 2019-10-18
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Wu et al. (Polymer, 2014, 55:4358-4368) reported the PBS ionomer (PBSUI) prepared by chain extension of hexamethylene diisocyanate using diethanolamine hydrochloride as ionic monomer. The bulk viscosity increases with the increase of ionic group content, but it is difficult to control the amount of hexamethylene diisocyanate in the chain extension synthesis of this type of ionic polymer, so it is easy to produce crosslinking and difficult to process

Method used

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  • Polybutylene succinate ionomer with low molecular weight and high melt viscosity and its preparation and microcellular foaming material based on it and its application
  • Polybutylene succinate ionomer with low molecular weight and high melt viscosity and its preparation and microcellular foaming material based on it and its application
  • Polybutylene succinate ionomer with low molecular weight and high melt viscosity and its preparation and microcellular foaming material based on it and its application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] Succinic acid (SA, 1 mole part), butanediol (BD, 1.2 mole parts) and tetrabutyl titanate (100 ppm, as a catalyst) are mixed, and dry nitrogen is passed into the flask before esterification to replace the The air in the bottle was repeated 5 times to remove the air in the bottle. The system was under the protection of nitrogen, and then the system was heated up to 140-180°C under stirring, and the temperature was maintained until the collected by-product water was close to the theoretical value. After the reaction temperature rose As high as 210-250°C, about 2-4 hours. Then add a butanediol solution containing 0.01 mole parts of DHPPO-K, react for 10 minutes under nitrogen protection, and start vacuuming the system, and react for 4 to 10 hours to obtain PBSI1-K. The viscosity-average molecular weight tested is listed in Table 1.

Embodiment 2

[0058] Succinic acid (SA, 1 mole part), butanediol (BD, 1.2 mole parts) and tetrabutyl titanate (100 ppm, as a catalyst) are mixed, and dry nitrogen is passed into the flask before esterification to replace the The air in the bottle was repeated 5 times to remove the air in the bottle. The system was under the protection of nitrogen, and then the system was heated up to 140-180°C under stirring, and the temperature was maintained until the collected by-product water was close to the theoretical value. After the reaction temperature rose As high as 210-250°C, about 2-4 hours. Then add a butanediol solution containing 0.03 mole parts of DHPPO-K, react for 10 minutes under the protection of nitrogen, and start vacuuming the system, and react for 4 to 10 hours to obtain PBSI3-K. The viscosity-average molecular weight tested is listed in Table 1.

Embodiment 3

[0060] Succinic acid (SA, 1 mole part), butanediol (BD, 1.2 mole parts) and tetrabutyl titanate (100 ppm, as a catalyst) are mixed, and dry nitrogen is passed into the flask before esterification to replace the The air in the bottle was repeated 5 times to remove the air in the bottle. The system was under the protection of nitrogen, and then the system was heated up to 140-180°C under stirring, and the temperature was maintained until the collected by-product water was close to the theoretical value. After the reaction temperature rose As high as 210-250°C, about 2-4 hours. Then add a butanediol solution containing 0.05 mole parts of DHPPO-K, react for 10 minutes under the protection of nitrogen, and start vacuuming the system, and react for 4 to 10 hours to obtain PBSI5-K. The viscosity-average molecular weight tested is listed in Table 1.

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Abstract

The invention belongs to the technical field of macromolecular materials, and discloses a polybutylene succinate ionomer with low molecular weight and high melt viscosity as well as a preparation method thereof and a microporous foamed material based on the same and application. The preparation method comprises the following steps: mixing succinic acid, butanediol and a catalyst, heating, reacting, increasing the temperature, adding phosphonium ion-containing monomers, vacuumizing, reacting, and obtaining the polybutylene succinate ionomer with the low molecular weight and high melt viscosity. The polybutylene succinate (PBS) ionomer effectively overcomes the difficulties of the PBS melt such as low strength and difficulty in foaming, can be used for preparing the foamed material, and solves the technical problems of the existing PBS foamed product that the porosity is high, the size of the pore is large and non-uniform, and the foam pore quality is difficult to control; a foamed material prepared by adopting the PBS ionomer as a raw material is low in density, high in foaming rate, small in foam pore size and large in foam pore density; and moreover, the process is environment-friendly and produces no harm or pollution to the environment.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to a polybutylene succinate ionomer having both low molecular weight and high melt viscosity, a preparation method thereof, and a microcellular foaming material based on the ionomer and its application. Background technique [0002] Foam plastic is a kind of polymer material formed by the micropores of a large number of gas media evenly dispersed in the plastic matrix, also known as porous plastic. It has many advantages such as light weight, cushioning and shock absorption, sound absorption and noise reduction, good heat insulation performance, strong corrosion resistance, etc., and is widely used in packaging, heat insulation, sound insulation and other material fields. Microcellular foam refers to the cell diameter in the range of 0.1 to 10 microns, and the cell density is 10 9 ~10 15 piece / cm 3 range of foam materials. Microcellular foamed materials can...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G63/692C08G63/78C08J9/12C08L67/02
Inventor 张水洞徐跃汪鹏彭响方
Owner SOUTH CHINA UNIV OF TECH
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