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Diatomite/polyether-ether-ketone composite material and preparation method thereof

A technology of polyether ether ketone and composite materials, which is applied in the field of diatomite/polyether ether ketone composite materials and its preparation, can solve the problems of uneven dispersion and agglomeration of inorganic fillers, and achieve favorable performance, uniform distribution, and system stable effect

Inactive Publication Date: 2015-04-29
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention mainly uses in-situ polymerization to solve the problem of uneven dispersion of inorganic fillers in polyetheretherketone and easy agglomeration, and promotes the polyetheretherketone resin to fully enter the interior of diatomite channels

Method used

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  • Diatomite/polyether-ether-ketone composite material and preparation method thereof
  • Diatomite/polyether-ether-ketone composite material and preparation method thereof
  • Diatomite/polyether-ether-ketone composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Preparation of a composite material with a theoretical addition of diatomaceous earth of 5phr:

[0031] (1) Weigh 14.42 g of untreated diatomaceous earth and dry it for later use. The theoretically produced polyether ether ketone mass of the weighed reactant is 288 g (1 mol), and the theoretical addition amount of diatomite is 5 phr. Weigh 803.52 g of diphenyl sulfone, and add diphenyl sulfone and diatomaceous earth into the reaction device in sequence;

[0032] (2) Heating the mixture in step (1) under nitrogen protection, after the diphenyl sulfone is completely melted, add Na 2 CO 3133.32g, 219.28g of 4,4'-difluorobenzophenone, add 110.12g of hydroquinone at about 130°C, and finally add 200mL of xylene, heat up to 178°C, react with water for 2 hours, release part of water and Xylene, the temperature is raised to 220°C and reacted with water for 1 hour, all water and xylene are released, and nitrogen protection is required during the feeding and reaction with water;...

Embodiment 2

[0037] Preparation of a composite material with a theoretical addition of diatomaceous earth of 5phr:

[0038] (1) Weigh 14.41 g of untreated diatomite and 808.63 g of diphenyl sulfone, add diphenyl sulfone and diatom earth to the reaction device in turn, vacuumize and ventilate nitrogen, and alternately carry out like this 4 times;

[0039] (2) Heating the mixture in step (1) under nitrogen protection, after the diphenyl sulfone is completely melted, add Na 2 CO 3 135.51g, 219.46g of 4,4'-difluorobenzophenone, add 110.11g of hydroquinone at about 130°C, and finally add 200mL of xylene, heat up to 180°C, react with water for 2 hours, release part of water and Xylene, raise the temperature to 220°C and react with water for 1 hour, release all water and xylene, nitrogen protection is required during the feeding and reaction with water;

[0040] (3) React the reaction system obtained in step (2) at 250°C and 285°C for 1 hour respectively, and finally raise the temperature to 31...

Embodiment 3

[0044] Preparation of a composite material with a theoretical addition of diatomaceous earth of 5phr:

[0045] (1) Preparation of diatomite suitable for in-situ polymerization: Weigh 200g of diatomite, put it into a 1000mL beaker, add 700mL of distilled water, drop concentrated sulfuric acid with a dropper, adjust the pH value to 2, stir for 1 hour, pump Filter; then put diatomaceous earth into 1000mL beaker again, add 700mL distilled water, slowly add Na 2 CO 3 powder, adjust the pH value to 9, stir for 1 hour, and filter with suction; finally, wash the diatomaceous earth with distilled water for 3 times, and wash with ethanol for 1 time, and dry it for later use.

[0046] (2) Weigh 14.42g of diatomite, 810.32g of diphenyl sulfone and 810.32g of diatomite which were treated with acid and alkali and dried for later use, and then add diphenyl sulfone and diatomite into the reaction device in turn, vacuumize and pass nitrogen, so alternately 4 times. The rest of the feeding a...

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Abstract

The invention relates to a diatomite / polyether-ether-ketone composite material and a preparation method thereof and belongs to the field of polymer composite materials. The preparation method comprises the following specific steps: treating diatomite with an acid solution and an alkali solution, adding the treated diatomite into a polyether-ether-ketone synthesis device, vacuumizing the polyether-ether-ketone synthesis device, displacing air with nitrogen, and carrying out polymerization reaction according to the polymerization steps of polyether-ether-ketone to obtain the diatomite / polyether-ether-ketone in-situ polymerization composite material. The diatomite which is a porous material is compounded with the polyether-ether-ketone through polymerization in situ, thus a new idea can be provided for the modification of the polyether-ether-ketone. The diatomite is a porous substance, and in-situ polymerization can ensure that the polymer enters the pores of the diatomite. The diatomite serves as the stress concentration point under stress, thus the defect that the porous substance is filled with the polymer with high melt viscosity can be alleviated, the mechanical properties of the diatomite / polyether-ether-ketone composite material can be improved significantly, and the problems that diatomite can not be dispersed uniformly into polyether-ether-ketone with high melt viscosity and the diatomite agglomerates in the polyether-ether-ketone can be well solved.

Description

technical field [0001] The invention belongs to the technical field of polymer composite materials, and in particular relates to a diatomite / polyether ether ketone composite material and a preparation method thereof. technical background [0002] Diatomaceous earth is a non-metallic mineral that is slowly formed from the remains of diatoms that grow in oceans or lakes and deposited on the bottom of the water through the action of the natural environment. It belongs to silicate substances, has good stability, heat resistance, acid resistance, low density and loose density, good adsorption, dispersibility, suspension, good wear resistance and electrical insulation, and low soluble salt content , with a large specific surface area, it is a porous material whose main component is SiO 2 . Using it as a reinforcing agent and modifier for plastics, rubber and coatings has achieved good application results. [0003] Polyetheretherketone (PEEK) is a new type of thermoplastic speci...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L61/16C08K9/04C08K9/02C08K3/36C08G8/02
Inventor 张海博谭捷朱晔孙大野姜振华
Owner JILIN UNIV
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