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A kind of high strength polysulfone resin and preparation method thereof

A polysulfone resin, high-strength technology, applied in the field of high-strength polysulfone resin and its preparation, can solve the problems of polyethersulfone with deep color, low light transmittance, poor flexibility, etc., achieve good thermal stability, reduce process , the effect of improving toughness

Active Publication Date: 2018-06-01
GUANGDONG YOUJU ADVANCED MATERIAL RES CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Chinese patent document CN102532899A discloses organosiloxane polyethersulfone resins containing linear and cage-type main chains and a preparation method thereof. By introducing functional molecular structures into the main chain of polyethersulfone, the polyethersulfone hydrophobicity and mediation properties are improved. electrical constant, but the polyethersulfone synthesized by this method has a darker color and lower light transmittance, which is mainly limited to the fields of coatings and microelectronic devices
Chinese patent document CN102504271A discloses a preparation method of hyperbranched polyester modified silicone resin, which combines the advantages of hydroxyl-terminated hyperbranched polyester and silicone resin, and significantly improves the mechanical properties and durability of silicone resin. Chemical performance and water resistance, but poor flexibility, it will crack under high and low temperature alternating conditions, which limits its application

Method used

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  • A kind of high strength polysulfone resin and preparation method thereof
  • A kind of high strength polysulfone resin and preparation method thereof
  • A kind of high strength polysulfone resin and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Follow the steps below to prepare high-strength polysulfone resin:

[0029] 1. Salt formation reaction: In a 300-liter stainless steel reaction kettle filled with nitrogen protection, equipped with a nitrogen pipe, a condensation water separator, and a high-efficiency stirrer, first add 75.0kg of N-methylpyrrolidone, start stirring and raise the temperature to 80°C. Add 35.0kg (122mmol) 4,4'-dichlorodiphenyl sulfone and 29.47kg (129mmol) bisphenol A in sequence. After the monomers are completely dissolved, add 15.28kg (144mmol) sodium carbonate to the system, and then add 60.0L For o-trimethylbenzene, continue to stir and heat up to 170°C, and perform a salt-forming reaction for 1 hour, and the solid content of the system in the salt-forming reaction stage is 25%;

[0030] 2. Polymerization reaction: After the salt formation is completed, all the o-trimethylbenzene is evaporated, and then the temperature is raised to 200°C, stirred at a speed of 50-70 rpm, kept at a con...

Embodiment 2

[0033] Follow the steps below to prepare high-strength polysulfone resin:

[0034] 1. Salt formation reaction: In a 300-liter stainless steel reaction kettle filled with nitrogen protection, equipped with a nitrogen pipe, a condensation water separator, and a high-efficiency stirrer, first add N-methylpyrrolidone, start stirring and heat up to 60°C, and then add 100mmol of 4,4'-dichlorodiphenyl sulfone, 106mmol of bisphenol A, after the monomers are completely dissolved, add 111mmol of sodium carbonate to the system, then add 60.0L of mesitylene, continue to stir and heat up to 190°C for salt formation reaction 2h, the solid content of the system in the salt-forming reaction stage is 30%;

[0035] 2. Polymerization reaction: After the salt formation is completed, all the mesitylene is evaporated, and then the temperature is raised to 230°C, stirred at a speed of 50-70 rpm, kept at a constant temperature for 3 hours, and 790g (3.2mmol) of compound A is added to the system to in...

Embodiment 3

[0039] Follow the steps below to prepare high-strength polysulfone resin:

[0040] 1. Salt formation reaction: In a 300-liter stainless steel reaction kettle filled with nitrogen protection, equipped with a nitrogen pipe, a condensation water separator, and a high-efficiency stirrer, first add N-methylpyrrolidone, start stirring and heat up to 70°C, and then add 106mmol of 4,4'-dichlorodiphenyl sulfone, 100mmol of bisphenol A, after the monomers are completely dissolved, add 120mmol of sodium carbonate to the system, then add 60.0L of m-trimethylbenzene, continue to stir and raise the temperature to 180°C for salt formation reaction 2h, the solid content of the system in the salt-forming reaction stage is 28%;

[0041] 2. Polymerization reaction: after the completion of salt formation, steam all m-trimethylbenzene, then raise the temperature to 220°C, stir at a speed of 50-70 rpm, keep the temperature at a constant temperature for 5 hours, add 10.6 mmol of compound B to the sy...

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Abstract

The invention discloses high-strength polysulfone resin and a preparation method thereof. The preparation method specifically comprises a salt forming reaction, a polymerization reaction and aftertreatment, wherein a chain extender containing Si, C or Ti is added in the polymerization reaction; and a high-boiling point solvent is adopted, sodium carbonate is preferentially adopted as a salt forming agent, and the solid content of the salt forming reaction and polymerization reaction is controlled. Through the invention, the production cost and energy consumption can be reduced, and the obtained polysulfone resin has good mechanical property, hydrophobic property, tensile strength, impact toughness, thermal stability and fluidity.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, in particular to a high-strength polysulfone resin and a preparation method thereof. Background technique [0002] Polysulfone is a kind of thermoplastic engineering plastics. Because of their excellent comprehensive properties such as heat resistance, hot water resistance, creep resistance, dimensional stability, impact resistance, chemical resistance, non-toxicity and flame retardancy, so It has been widely used in the fields of electronics, electrical appliances, machinery, automobiles, medical appliances, food processing and non-stick coatings for a long time. However, since the processing temperature of polysulfone generally exceeds 300°C, the defects in its own structure often lead to partial decomposition of the resin during the processing process, followed by a decrease in mechanical properties and a reduction in the pass rate of the product. Carrying out research on the design...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G75/20
CPCC08G75/20
Inventor 王贤文
Owner GUANGDONG YOUJU ADVANCED MATERIAL RES CO LTD
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