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High-transparent polysulfone resin and preparation method thereof

A polysulfone resin and transparent technology, which is applied in the field of highly transparent polysulfone resin and its preparation, can solve the problems of affecting popularization and application, uneven color, and product performance degradation, and achieve shortened reaction time, good application prospects, and reduced crystallinity Effect

Active Publication Date: 2016-02-17
GUANGDONG YOUJU ADVANCED MATERIAL RES CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the defects of the existing technology and its own synthesis route, if the production process is not well controlled, polysulfone resin with high crystallinity will appear, which will lead to problems such as low transmittance and uneven color in the thin products processed and formed later. , the finished product rate of processing is greatly reduced, and the product performance is reduced, thus affecting its actual promotion and application
[0003] Chinese patent document CN1057783C discloses a polysulfone composition with very low luster and high light transmittance and products manufactured therefrom. This invention is by adding organic phosphorus stabilizer and organic fluorescent whitening agent to polysulfone products, Although the yellowness index and haze of the obtained product are very low, the polysulfone product itself is sensitive to additives, and problems such as aging and cracking will occur during long-term use
At present, there are many studies on the modification and enhancement of plastics by using various additives, but there are few studies on improving the transparency of polysulfone plastics from the formulation.

Method used

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  • High-transparent polysulfone resin and preparation method thereof
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  • High-transparent polysulfone resin and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Follow the steps below to prepare highly transparent polysulfone resin:

[0032] 1. Salt formation reaction: Add 35.0kg (122mmol) 4,4'-dichlorodiphenyl sulfone, 27.8kg (122mmol) Bisphenol A, 14.0kg sodium carbonate, then add N,N-dimethylacetamide to make the solid content of the reaction system reach 25%, stir and heat up to 80°C, after the monomers are completely dissolved, pump out the gas in the kettle to -0.09 MPa, then feed nitrogen to raise the pressure in the kettle to 0.01MPa, repeat this process five times to replace the air in the kettle, and finally feed nitrogen to raise the pressure in the kettle to 2.0MPa, heat the kettle to reach 170 ° C, constant temperature Salt formation 1h;

[0033] 2. Polymerization reaction: raise the temperature to 200°C, stir at a speed of 50-70 rpm, press at 3.0 MPa, polymerize at a constant temperature for 3 hours, then add 180g of compound B to the system, and increase the stirring speed to 70-90 rpm / min, continue to keep co...

Embodiment 2

[0038] Follow the steps below to prepare highly transparent polyethersulfone resin:

[0039]1. Salt formation reaction: Add 35.0kg (122mmol) 4,4'-dichlorodiphenyl sulfone, 30.5kg (122mmol) Bisphenol S, 14.0kg sodium carbonate, and N,N-dimethylacetamide were added to make the solid content of the reaction system reach 27%, and the temperature was raised to 80°C with stirring. After all the monomers were dissolved, the gas in the kettle was pumped out to -0.09 MPa, then feed nitrogen to raise the pressure in the kettle to 0.01MPa, repeat this process five times to replace the air in the kettle, and finally feed nitrogen to raise the pressure in the kettle to 3.0MPa, heat the kettle to reach 190 ° C, constant temperature Salt formation 1h;

[0040] 2. Polymerization reaction: raise the temperature to 230°C, stir at a speed of 60 rpm, press at a pressure of 1.0-3.0 MPa, polymerize at a constant temperature for 3 hours, then add 300g of compound C to the system, and increase the s...

Embodiment 3

[0045] Follow the steps below to prepare highly transparent polyphenylene sulfone resin:

[0046] 1. Salt formation reaction: Add 35.0kg (122mmol) 4,4'-dichlorodiphenyl sulfone, 22.7kg (122mmol) 4,4'-biphenyldiphenol, 14.0kg sodium carbonate, then add N,N-dimethylacetamide to make the solid content of the reaction system reach 30%, stir and heat up to 80°C, after the monomers are completely dissolved, draw out The gas in the kettle reaches -0.09MPa, and then nitrogen gas is introduced to raise the pressure in the kettle to 0.01MPa. Repeat this process five times to replace the air in the kettle, and finally, nitrogen gas is introduced to raise the pressure in the kettle to 3.0MPa. The temperature reaches 190°C, and the salt is formed at a constant temperature for 1 hour;

[0047] 2. Polymerization reaction: raise the temperature to 240°C, stir at a speed of 50-70 rpm, press at a pressure of 1.0-3.0 MPa, polymerize at a constant temperature for 3 hours, then add 300g of compou...

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Abstract

The invention belongs to the technical field of high polymer materials, and discloses high-transparent polysulfone resin and a preparation method thereof. The preparation method particularly comprises the steps of a salt-forming reaction, a polymerization reaction and post-treatment. A cycloparaffin bisphenol compound is added in the polymerization reaction, the regularity of a polymer chain is destroyed, the degree of crystallinity is decreased, the hydroxy end-capping high-transparent polysulfone resin is prepared, original excellent properties of polysulfone are reserved, the high-transparent advantage is achieved, and better application prospect and great market value are achieved. By controlling the solid content of a system and adopting specific solvent and high-pressure polymerization, the time of the polymerization reaction is greatly shortened, the energy consumption is reduced, a water separation agent does not need to be added, and the post-treatment processes are reduced.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to a highly transparent polysulfone resin and a preparation method thereof. Background technique [0002] Polysulfone is a thermoplastic engineering plastic with excellent mechanical properties, high rigidity, wear resistance, high strength, high thermal stability, high glass transition temperature, excellent mechanical properties even at high temperatures, and hydrolysis resistance , good dimensional stability, small molding shrinkage, non-toxic, radiation-resistant, flame-resistant, self-extinguishing, excellent electrical properties in a wide temperature range, good chemical stability, and can withstand general acids, alkalis, and salts, so It has been widely used in the fields of electronic appliances, mechanical processing, automobiles, medical appliances, food processing and non-stick coatings for a long time. However, due to the defects of the existing ...

Claims

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Application Information

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IPC IPC(8): C08G75/20
Inventor 王贤文
Owner GUANGDONG YOUJU ADVANCED MATERIAL RES CO LTD
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