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Foamable flame-retarding polyester capable of being used for supercritical CO2 and preparation method and application thereof

A technology of flame retardant polyester and CO2, which is applied in the field of supercritical CO2 foamed flame retardant polyester and its preparation, can solve the problems that it cannot be applied to application fields with high requirements for fire safety, polyester does not have flame retardant properties, and the like, Achieve the effect of high rigidity, light weight and high specific strength

Inactive Publication Date: 2012-10-17
BLUETOP JIANGSU NEW MATERIAL +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Regardless of the reaction extrusion method, blending method or in-situ polymerization method, they only focus on the development of high-melt strength foamable polyester, and the prepared polyester does not have flame retardancy, so it cannot be applied to Fields of application with high demands on fire safety, e.g. in the construction industry

Method used

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  • Foamable flame-retarding polyester capable of being used for supercritical CO2 and preparation method and application thereof
  • Foamable flame-retarding polyester capable of being used for supercritical CO2 and preparation method and application thereof
  • Foamable flame-retarding polyester capable of being used for supercritical CO2 and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] In a 2L polyester reactor with a rectification tower, 750g of terephthalic acid, 363.11g of ethylene glycol, 0.94g of pentaerythritol, 7.5g of carboxyethylphenylphosphorous acid, 0.2355g of ethylene glycol antimony and nano-scale The mixture of magnesium hydroxide 7.5 g joins in the reactor, feeds nitrogen, raising temperature, at 230 o C, carry out the esterification reaction under the condition of a pressure of 0.3 MPa, react to the end of the water outlet, then raise the temperature, draw a low vacuum, at 250 o C, 10 4 Under the condition of Pa, react for 1 hour pre-condensation, and then at 280 o C, under the condition of 50Pa, react for 3 hours, final polycondensation reaction, finally feed nitrogen to release the vacuum, discharge the material into ice water and sample in strips.

Embodiment 2

[0038] With the device of embodiment 1, 750g terephthalic acid, 363.11g ethylene glycol, 5.46g glycerol, carboxyethylphenyl hypophosphorous acid 0.75 g, 0.2355g ethylene glycol antimony and nanoscale magnesium hydroxide 0.75 g Add the mixture into the reaction kettle, feed nitrogen, raise the temperature, and react at 230°C and a gauge pressure of 0.3 MPa until the end of the water outlet and the end of the pressurized esterification reaction, then raise the temperature, draw a low vacuum, and °C, 10 4 Pre-condensation under the condition of Pa for 1 hour, and then high vacuum, and the final polycondensation reaction at 280 ° C and 50 Pa for 3 hours, and finally nitrogen gas was introduced to release the vacuum, and the material was discharged into ice water to form strips for sampling.

Embodiment 3

[0040] In an 80L polyester reactor, a mixture of 37kg terephthalic acid, 18kg ethylene glycol, 60.76g pentaerythritol, 37 g carboxyethylphenylphosphorous acid, 13 g ethylene glycol antimony and 37 g nanometer magnesium hydroxide was added Into the reaction kettle, feed nitrogen, raise the temperature, react at 230°C, gauge pressure 0.3MPa until the end of water outlet, then raise the temperature, draw a low vacuum, at 250°C, 10 4 Pre-condensation under the condition of Pa for 1 hour, and then a high vacuum, the final polycondensation reaction at 280 ° C and 50 Pa for 3 hours, and finally nitrogen gas was introduced to relieve the vacuum, and the material was discharged into ice water for sampling.

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Abstract

The invention provides a foamable flame-retarding polyester capable of being used for supercritical CO2 and a preparation method and an application thereof. The foamable flame-retarding polyester capable of being used for supercritical CO2 is prepared by using aromatic dicarboxylic acid or its derivative, dihydric alcohol and multiple function group chain extender and phosphorus flame retardant and nano inorganic fire retardant as raw materials, carrying out direct esterification melt polycondensation in the presence of a catalyst to obtain a long-chain branching flame-retarding polyester. The polyester of the invention has the advantages of light weight, large specific strength, large rigidity, good electrical insulating property, excellent heat insulation and sound insulation properties, etc, and is mainly used in building industry.

Description

technical field [0001] The present invention relates to a kind of foamable flame retardant polyester that can be used for making foam material and its preparation method and application, especially relates to a kind of can be used for supercritical CO 2 Foamed flame-retardant polyester and its preparation method and application. Background technique [0002] Polyester has excellent physical, chemical and mechanical properties, and is widely used in the three major fields of synthetic fibers, biaxially oriented films and polyester bottles. Its application and development as engineering plastics began in the 1960s [Ravindranath, K.and Mashelkar, R. A. Chem Eng Sci. 1986, 41:2197]. Polyester foam material has excellent properties such as light weight, high specific strength, high rigidity, good electrical insulation, heat insulation and sound insulation, and can be used in food packaging, building materials, wire insulation, microwave containers, refrigerator inner panels, spo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G63/692C08G63/20C08G63/78C08K13/02C08K3/22C08J9/12C08L67/02
Inventor 夏明宝夏亮赵玲刘涛周耀林
Owner BLUETOP JIANGSU NEW MATERIAL
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