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Ketone group-containing polyethersulfone resin and synthetic method thereof

A synthesis method and polyethersulfone technology are applied in the field of ketone group-containing polyethersulfone resin and its synthesis, which can solve the problems of high glass transition temperature, unfavorable molecular motion, difficulty in molding and processing, etc. Ease of route, effect of improved thermal stability and processability

Inactive Publication Date: 2012-10-31
ZHEJIANG PFLUON TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the sulfone groups and ether bonds on the molecular chain of polyethersulfone are regularly distributed in equal proportions, the bond energy of sulfone groups is lower than that of ketone groups, so the thermal stability of polyethersulfone is better than that of polyaryletherketone polymers. At the same time, because the sulfone group is not conducive to molecular movement, its glass transition temperature is relatively high, which brings difficulties to molding processing

Method used

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  • Ketone group-containing polyethersulfone resin and synthetic method thereof
  • Ketone group-containing polyethersulfone resin and synthetic method thereof
  • Ketone group-containing polyethersulfone resin and synthetic method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Into a 1000ml four-necked reaction flask equipped with a thermometer, an air inlet pipe, a reflux liquid separator, and a stirrer with a torque display to remove oxygen, and then add 137.7g (0.55mol) 4,4-dihydroxydiphenylsulfone successively and 13.8g (0.0551mol) of 4,4-dichlorobenzophenone, then add 600g of distilled sulfolane, start the agitator to stir, and start to heat up, when the temperature reaches 85°C, observe the material in the reactor Dissolution situation, when the material is completely dissolved in the solvent, slowly add 308.6g concentration of 20% potassium hydroxide solution and 90g toluene, continue heating, when toluene and water azeotrope are steamed out, pass through the reflux separator Reflux the toluene into the reactor, release the water and weigh it, when the temperature reaches 145°C, stop heating, and control the temperature of the material in the reactor at 130-160°C, keep the temperature for 70--80 minutes, when the reactor is steamed Whe...

Embodiment 2

[0032] According to the same method as in Example 1, except that the feeding weight of 4,4-dichlorobenzophenone is changed to 41.4g (0.165mol), and the weight of 4,4-dichlorodiphenylsulfone is changed to 110.6g (0.385mol) , at 230°C, keep the temperature constant for 40-60 minutes to obtain a ketone-containing polyethersulfone resin product, coded as PESM-2.

Embodiment 3

[0034]According to the same method as in Example 1, except that the feeding weight of 4,4-dichlorobenzophenone is changed to 55.2g (0.22mol), and the weight of 4,4-dichlorodiphenylsulfone is changed to 94.8g (0.33mol) , at 230°C, keep the temperature constant for 50-70 minutes to obtain a ketone-containing polyethersulfone resin product, coded as PESM-3.

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Abstract

The invention belongs to the technical field of polymer materials and provides ketone group-containing polyethersulfone resin which is high in thermal stability, low in processing temperature and is easier for injection-molding and extrusion-molding. The ketone group-containing polyethersulfone resin is a product synthetized through nucleophilic polycondensation reaction of the following polymerization monomers: 4,4-dihydroxyl dihydroxydiphenylsulfone, 4,4'-dichlorobenzophenone and 4,4-dichlorodiphenyl sulfone. The ketone group is introduced onto the molecular chain of polyethersulfone, so as to improve the thermal stability of the polymer, reduce the processing temperature of the polymer and ensure that the polymer is more convenient for injection-molding and extrusion-molding. The invention also provides a synthetic method of the ketone group-containing polyethersulfone resin. The method is easy to operate, and the reaction process and the viscosity of materials are easily controlled.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to a ketone group-containing polyethersulfone resin and a synthesis method thereof. Background technique [0002] Polyethersulfone resin is a thermoplastic polymer material with excellent comprehensive properties. It has excellent heat resistance, physical and mechanical properties, insulation properties, etc. It can maintain stable performance and other outstanding advantages, and has been widely used in many fields. In addition, due to the good adhesion between polyethersulfone and metals such as iron and lead, and the high hardness of the coating surface, polyethersulfone and polytetrafluoroethylene can be formulated into corrosion-resistant, radiation-proof, good insulation performance, flame-retardant, non-toxic , Non-stick coating with the best adhesion to metal, widely used in kitchen utensils, household appliances, light industrial hardware, industrial...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G75/23C08L81/06
Inventor 史航王锡铭关建安倪国杰付水龙
Owner ZHEJIANG PFLUON TECH CO LTD
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