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Preparation method of polyether ether ketone terpolymer

A terpolymer and polyether ether ketone technology, which is applied in the field of preparation of polyether ether ketone terpolymers, can solve problems such as weak temperature resistance, achieve easier control of the production process, improve stability, reduce The effect of pH

Inactive Publication Date: 2017-12-12
YIBIN TIANYUAN GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Usually, the process route for synthesizing polyetheretherketone mostly uses 4,4'-difluorobenzophenone and hydroquinone as raw materials, diphenyl sulfone or sulfolane as solvent, alkali metal carbonate, bicarbonate and Alkali metal hydroxide is a salt-forming agent, and polycondensation reaction is carried out under high temperature conditions to obtain high molecular weight polyetheretherketone resin, but the temperature resistance of polyetheretherketone resin synthesized by common processes is relatively weak

Method used

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  • Preparation method of polyether ether ketone terpolymer

Examples

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Effect test

Embodiment 1

[0019] First, introduce high-purity nitrogen (purity ≥99.9995%) to the reactor equipped with thermometer, air inlet pipe, reflux condensing device and torque display stirrer to deoxygenate, and maintain a certain nitrogen flow (2m 3 / h), add 335g diphenyl sulfone, after heating and dissolving, add 110g 4,4'-difluorobenzophenone in turn, after stirring evenly, when heated to 150 ℃, the sodium bicarbonate and potassium bicarbonate powders are pre-dried , Weigh 82.0g of sodium bicarbonate and 5.0g of potassium bicarbonate and quickly add them into the reaction system. After stirring evenly, continue to heat up to 185°C and react at a constant temperature for 1h. At this temperature, 52.5g of pre-mixed p-benzene The mixture of diphenol and 8.9g of 4,4'-biphenol was slowly added into the reaction system. The addition time was 20min, the stirring speed was increased, the temperature was continued to rise, the temperature was raised to 270°C within 15min, the temperature was kept cons...

Embodiment 2

[0021] According to the same method as Example 1, only the amount of diphenyl sulfone was changed to 350 g to obtain a polyether ether ketone terpolymer.

Embodiment 3

[0023] According to the same method as Example 1, only the amount of sodium bicarbonate was changed to 78.5g, and the amount of potassium bicarbonate was changed to 9.6g to obtain a polyether ether ketone terpolymer.

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Abstract

The invention provides a preparation method of polyether ether ketone terpolymer. The polyether ether ketone terpolymer, which is prepared by taking 4,4'-difluorobenzophenone, p-dihydroxybenzene and 4,4'-biphenol as raw materials, taking diphenyl sulfone as a solvent and taking a mixture of sodium bicarbonate and potassium bicarbonate as a salt-forming agent, has high heat stability, high mechanical property and high processability. The p-dihydroxybenzene and the 4,4'-biphenol serve as a phenol monomer mixture, the steric hindrance of the polyether ether ketone polymer is increased and the temperature resistance of the product is improved; in addition, the 4,4'-biphenol is not liable to oxidation compared with the p-dihydroxybenzene, and the stability of the phenol monomer can be improved due to addition of the 4,4'-biphenol.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to a preparation method of a polyether ether ketone terpolymer. Background technique [0002] Polyetheretherketone (PEEK) resin is a kind of high heat-resistant aromatic semi-crystalline thermoplastic engineering plastic, which is usually polycondensed with 4,4'-difluorobenzophenone and hydroquinone as raw materials. The main chain of the molecule contains a large number of rigid benzene rings, flexible ether bonds and ketone bonds that can improve the van der Waals force, so the polymer has many advantages such as good abrasion resistance, chemical resistance, radiation resistance and flame retardancy. At the same time, its load heat deformation temperature can reach up to 316 ℃, and the continuous use temperature can reach 260 ℃. Therefore, PEEK is widely used in many fields such as defense and military, aerospace, electronic appliances, auto parts, semicond...

Claims

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Application Information

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IPC IPC(8): C08G8/02
CPCC08G8/02
Inventor 江万雄赵琴颜华佘国华缑可贞周杰
Owner YIBIN TIANYUAN GRP CO LTD
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