Non-sticking lining with wearing resistance and anti-corrosive property and coating method thereof

A non-stick coating, anti-corrosion technology, applied in anti-corrosion coatings, coatings, layered products, etc., can solve the problem of the film of the base coating is no longer dense, and the anti-corrosion performance is reduced.

Active Publication Date: 2009-06-24
ZHEJIANG PFLUON TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above-mentioned literature aims at the shortcoming of the poor wear resistance of the simple fluorine coating, and adds ceramic particles in the primer to enhance the wear resistance of the fluori

Method used

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  • Non-sticking lining with wearing resistance and anti-corrosive property and coating method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0080] Spray the anti-corrosion primer composition listed in Table 1 on the smooth aluminum substrate surface that has only been washed to remove grease, then dry at a temperature of 120±10°C (substrate temperature) for 10 minutes and then cool naturally to room temperature, then The wear-resistant midcoat composition listed in Table 2 was sprayed on the dry base coat, and the overcoat composition listed in Table 3 was sprayed wet-on-wet on the midcoat. After spraying, the formed three-layer composite structure coating was baked at a temperature of 380° C. for 8 minutes so that all the coatings were simultaneously fused on the substrate to form a non-stick coating with good adhesion.

[0081] The dry coating thickness (DFT) was determined by eddy current analysis, and the dry film thickness of the base coat / intermediate coat / overcoat was 13 microns / 23 microns / 10 microns, respectively. Since the thickness of the intermediate layer is 23 microns smaller than the diameter of the ...

Embodiment 2

[0124] The difference between this embodiment and Example 1 is that the anti-corrosion primer composition adopts the anti-corrosion primer composition listed in Table 4, and the film thickness of the primer / intermediate coat / overcoat is respectively 12.5 microns / 25 microns / 10 microns , all the other are identical with embodiment 1.

[0125] Table 4 - Primer Compositions (2)

[0126] Element weight percentage

[0127] PES 13.0

[0128] PTFE 20.0

[0129] NMP 8.2

[0130] Triethanolamine 2.5

[0131] Glycerol 3.7

[0132] Leveling agent 0.8

[0133] Deionized water 49.45

[0134] Carbon black pigment (1-2μm) 1.6

[0135] Surfactant 0.75

[0136] Total: 100.0

[0137] Solid content: 34.6%

[0138] Pigment to Resin Weight Ratio: 4.82%

Embodiment 3

[0140] The difference between this embodiment and Example 1 is that the anti-corrosion primer composition adopts the anti-corrosion primer composition listed in Table 5, and the film thickness of the primer / intermediate coat / overcoat is respectively 13.5 microns / 24 microns / 9 microns , all the other are identical with embodiment 1.

[0141] Table 5 - Primer Compositions (3)

[0142] Element weight percentage

[0143] PPS 12.0

[0144] PTFE 20.4

[0145] NMP 3.0

[0146] Leveling agent 0.3

[0147] Triethanolamine 0.78

[0148] Glycerol 0.91

[0149] Surfactant 0.72

[0150] water 59.2

[0151] Carbon black pigment (1-2μm) 1.6

[0152] Total: 100.0

[0153] Solid content: 34.0%

[0154] Pigment to Resin Weight Ratio: 4.94%

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Abstract

The invention discloses a non-stick coating with wear resistance and corrosion resistance and a coating method thereof. The coating comprises an anti-corrosive bottom layer, a wear-resistant intermediate layer and a non-stick finish coat, wherein the bottom layer contains a fluoropolymer, 1 to 15 weight percent of at least one heat-resistant polymer adhesive, and 1 to 15 weight percent of pigment and filler; the intermediate layer is coated on the bottom layer, and contains the fluoropolymer and inorganic filler particles; and the finish coat is coated on the intermediate layer and contains the fluoropolymer with non-stick effect. A priming coat has good anti-corrosion performance due to small content and small fineness of the pigment and the filler, an intermediate coating has good wear-resistant property due to the fact that partial large particles in an organic filler are embedded into the bottom layer and are convex into the finish coat, and the finish coat has good non-stick performance.

Description

technical field [0001] The invention relates to a non-stick coating and a coating method thereof, more specifically, to a non-stick coating having both wear resistance and corrosion resistance and a coating method thereof. Background technique [0002] The heat-resistant non-stick coating was first used on cooking utensils such as pots, and it has a history of more than 30 years. Although scientists and technicians have developed a variety of coatings for coating non-stick coatings over the past 30 years, their main ingredients are the same , are polytetrafluoroethylene (referred to as 4F, PTFE) a synthetic polymer material. PTFE is a perfluoropolymer obtained by copolymerization of tetrafluoroethylene. PTFE has structural characteristics such as high crystallinity, large molecular weight, no branched chain in the molecule, fluorine atoms are closely arranged around the C-C skeleton, high C-F bond energy and fluorine atoms have a shielding effect on the main chain. These ch...

Claims

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Application Information

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IPC IPC(8): B32B33/00A47J36/02C09D127/18C09D5/08C09D5/00B05D1/38B05D3/02
CPCB32B2307/748B32B2307/554C09D127/18C08K7/18B32B33/00
Inventor 史航
Owner ZHEJIANG PFLUON TECH CO LTD
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