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A kind of high temperature resistant polycarbonate and preparation method thereof

A technology of polycarbonate and high temperature resistance, applied in the field of high temperature resistant polycarbonate and its preparation, to achieve the effect of simple reaction conditions

Active Publication Date: 2018-01-19
AVIC BEIJING INST OF AERONAUTICAL MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0010] However, the above-mentioned patents all use bisphenols containing large-volume rigid groups containing carbon and oxygen atoms as monomers for polycarbonate synthesis. Patent report of polycarbonate

Method used

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  • A kind of high temperature resistant polycarbonate and preparation method thereof
  • A kind of high temperature resistant polycarbonate and preparation method thereof
  • A kind of high temperature resistant polycarbonate and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Synthesis of Dihydric Phenol Monomers Containing Imide Groups

[0032] Add 16.659g (0.0375mol) of 4,4'-(hexafluoroisopropylene) diphthalic anhydride, 8.3045g (0.0750mol) of aminophenol and 100ml of dimethylformamide into the reaction vessel, and stir at room temperature for 3~ 5h, then add 0.15mol acetic anhydride and 0.15mol triethylamine, raise the temperature to 50-60°C, and react for 2-4h; the obtained product is added dropwise to deionized water under stirring condition, then it is suction-filtered, washed and dried Dry, obtain amidation reaction product;

[0033] Add 17.76g (0.0250mmol) of the amidation reaction product into the reaction vessel, add 125ml of methanol and 125ml of chloroform, and add 1.657g of toluenesulfonic acid at the same time, raise the temperature to 75-85°C, and react for 3-5h. Then the temperature was lowered to 35-45° C., and the solvent was removed. Finally, recrystallize in 200 ml of deionized water / dioxane (1:1 volume ratio), wash and...

Embodiment example 1

[0036] The molecular structural formula of the polycarbonate prepared by embodiment case 1 is:

[0037]

Embodiment example 2

[0039] Synthesis of Dihydric Phenol Monomers Containing Imide Groups

[0040] Add 12.609g (0.0375mol) of 4,4'-isopropyl diphthalic anhydride, 8.3045g (0.0751mol) of aminophenol and 100ml of dimethylformamide into the reaction vessel, stir at room temperature for 3 to 5 hours, and then Add 0.15mol acetic anhydride and 0.15mol triethylamine, raise the temperature to 50-60°C, and react for 2-4 hours; the obtained product is added dropwise to deionized water under stirring conditions, and then it is suction filtered, washed and dried to obtain Amidation reaction product;

[0041] Add 15.06g (0.25mmol) of the amidation reaction product into the reaction vessel, add 125ml of methanol and 125ml of chloroform, and simultaneously add 1.657g of toluenesulfonic acid, heat up to 75-85°C, and react for 3-5 hours. Then the temperature was lowered to 35-45° C., and the solvent was removed. Finally, recrystallize in 200 ml of deionized water / dioxane (1:1 volume ratio), wash and dry to obtai...

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Abstract

The invention discloses high-temperature-resistant polycarbonate and a preparation method thereof. According to the preparation method, a dihydric phenol monomer containing imide groups is synthesized by virtue of reaction between binary anhydride and aminophenol, and high-temperature-resistant polycarbonate is prepared from the dihydric phenol monomer containing the imide groups and diphenyl carbonate by virtue of melting ester exchange. The glass-transition temperature of high-temperature-resistant polycarbonate prepared by virtue of the preparation method exceeds 250 DEG C, meanwhile, and high-temperature-resistant polycarbonate has high transparency and is applicable to high-temperature-resistant transparent plastic components such as airplane plastic components, automobile lamps and high-temperature medical instruments.

Description

technical field [0001] The invention relates to a high-temperature-resistant polycarbonate and a preparation method thereof, belonging to the field of polymer materials. Background technique [0002] Bisphenol A polycarbonate has become one of the most important optically transparent materials due to its high light transmittance, high impact resistance, good temperature resistance and excellent creep resistance. Its application is changing from ordinary optical fields such as Optical lenses, lenses, lenses, etc., are gradually penetrating into high-end optical fields such as aviation, aerospace, automobiles and optoelectronics to replace traditional inorganic glass. However, compared with inorganic glass, the high temperature resistance of bisphenol A polycarbonate is low, and its glass transition temperature generally does not exceed 150°C, making it difficult to apply to environments above 150°C. With the development of high-temperature-resistant transparent materials, su...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G64/30
CPCC08G64/307
Inventor 陈宇宏
Owner AVIC BEIJING INST OF AERONAUTICAL MATERIALS
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