Thick coating polyether ether ketone composite coating and its preparation method and application
A technology of polyether ether ketone and composite coatings, which is applied in the direction of anti-corrosion coatings, coatings, and devices for coating liquid on the surface, etc. It can solve the problems of polyether ether ketone powder coatings such as sagging, and achieve excellent anti-corrosion performance and excellent spraying process. The effect of simplicity and simple preparation method
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Embodiment 1
[0028] Polyether ether ketone containing alkyne group is synthesized by polymerization reaction, wherein x=0.1, y=0.9 in polyether ether ketone containing alkyne group; A solution is formed in formamide (DMF), and the mass percentage concentration of the solution is 1%; then the polyether ether ketone powder coating is added to the above solution for stirring or ultrasonic dispersion, wherein the average particle diameter of the polyether ether ketone powder coating is 30 μm , the melt index is 40g / 10min, the mass ratio of polyether ether ketone powder coating and alkyne group-containing polyetherether ketone solution is 1:1; the mixed solution is suction filtered and dried, dispersed to a particle size suitable for electrostatic spraying, Finally, a thick-coated polyether ether ketone composite coating is obtained.
Embodiment 2
[0030] The thick-coated polyetheretherketone composite coating prepared in Example 1 is used to prepare a polyetheretherketone thick coating, and the steps of the preparation method are as follows:
[0031] 1) Spray the thick-coated polyetheretherketone composite coating prepared in Example 1 on the conductive substrate by electrostatic spraying method;
[0032] 2) The substrate coated with the paint in step 1) is subjected to high temperature treatment, that is, the temperature is raised to 380° C. and maintained for 3 minutes;
[0033] 3) Recoating by thermal spraying method, that is, directly thermal spraying a thick-coated polyether ether ketone composite coating on the heat-treated substrate in step 2);
[0034] 4) Repeat the high-temperature treatment operation of step 2) for the base material obtained in step 3);
[0035] 5) If the coating thickness does not meet the requirements, repeat steps 3) and 4);
[0036] 6) The coating thickness meets the requirements, and th...
Embodiment 3
[0038]Polyether ether ketone containing alkyne group is synthesized by polymerization reaction, wherein x=0.5, y=0.5 in polyether ether ketone containing alkyne group; A solution is formed in acetamide (DMAC), and the mass percentage concentration of the solution is 10%; then the polyether ether ketone powder coating is added to the above solution for stirring or ultrasonic dispersion, wherein the average particle diameter of the polyether ether ketone powder coating is 150 μm , the melt index is 150g / 10min, the mass ratio of polyether ether ketone powder coating and alkyne group-containing polyetherether ketone solution is 20:1; the mixed solution is suction filtered and dried, dispersed to a particle size suitable for electrostatic spraying, Finally, a thick-coated polyether ether ketone composite coating is obtained.
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Abstract
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