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Polytetrafluoroethylene-reinforced adhesion ceramic coating and preparation method thereof

A polytetrafluoroethylene and ceramic coating technology, used in coatings, devices for coating liquids on surfaces, special surfaces, etc., can solve the problems of high operator requirements, difficult operation and high cost, and achieve wear resistance The effect of long life, low curing temperature and low cost

Inactive Publication Date: 2019-11-15
SUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

A method for preparing a high-anti-wear and low-friction thermal spray ceramic coating, a high-toughness MAX phase ceramic coating and its preparation method. The process of preparing the ceramic coating is complicated, difficult to operate, and requires certain equipment support; The alumina ceramic coating and its preparation method need to be calcined at high temperature, and the current is passed through a mixed gas chamber composed of hydrogen, helium, argon and nitrogen and broken down to generate a discharge, and a plasma arc jet is generated between the cathode and the anode, etc. , the operation is difficult and requires high requirements for operators; scholars such as Xu Xiaoyan (Preparation and performance characterization of carbon nanotube-reinforced adhesive ceramic coating [J]. Silicate Bulletin, 2017, 36(10): 3516-3520), Huang Guodong et al. (The effect of graphene on the friction behavior of alumina adhesive ceramic coatings [J]. Thermal Processing Technology, 2018, 47(10): 127-132.) respectively used carbon nanotubes and graphene for adhesive ceramics The preparation of coatings, carbon nanotubes and graphene as one-dimensional and two-dimensional carbon materials, although they have excellent mechanical, thermal and electrical properties, from the perspective of application, the cost of carbon nanotubes and graphene is expensive

Method used

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  • Polytetrafluoroethylene-reinforced adhesion ceramic coating and preparation method thereof
  • Polytetrafluoroethylene-reinforced adhesion ceramic coating and preparation method thereof
  • Polytetrafluoroethylene-reinforced adhesion ceramic coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] (1) Substrate pretreatment: Grind the 45 steel substrate with sandpaper to remove surface rust marks, ultrasonically clean it in absolute ethanol for 15 minutes to remove surface stains, wash with deionized water, dry, and finally roughen the surface.

[0030] (2) Slurry preparation: Take by weighing 58.2wt% aggregate micro-alumina, 1wt% curing agent nano-zinc oxide, 0.6wt% nickel powder, 0.2wt% polytetrafluoroethylene according to the preparation steps, then pour Put it into a ceramic tank and perform ball milling in a planetary ball mill for 3 hours; measure 40wt% of the adhesive aluminum dihydrogen phosphate, and gradually add it dropwise to the mixture after ball milling, fully stir to form a sol, and let it stand for 1 to 2 days. ;Finally, spread the uniformly mixed slurry evenly on the pretreated 45 steel surface.

[0031] (3) Curing treatment: firstly cure at room temperature for 2 hours; then put it in a drying oven to raise the temperature to 50°C at a constant...

Embodiment 2

[0033] (1) Substrate pretreatment: Grind the 45 steel substrate with sandpaper to remove surface rust marks, ultrasonically clean it in absolute ethanol for 15 minutes to remove surface stains, wash with deionized water, dry, and finally roughen the surface.

[0034] (2) Slurry preparation: according to the preparation steps, weigh 58.0wt% aggregate micron alumina, 1wt% curing agent nano-zinc oxide, 0.6wt% nickel powder, 0.4wt% polytetrafluoroethylene, then pour Put it into a ceramic tank and perform ball milling in a planetary ball mill for 3 hours; measure 40wt% of the adhesive aluminum dihydrogen phosphate, and gradually add it dropwise to the mixture after ball milling, fully stir to form a sol, and let it stand for 1 to 2 days. ;Finally, spread the uniformly mixed slurry evenly on the pretreated 45 steel surface.

[0035] (3) Curing treatment: firstly cure at room temperature for 2 hours; then put it in a drying oven to raise the temperature to 50°C at a constant speed, a...

Embodiment 3

[0037] (1) Substrate pretreatment: Grind the 45 steel substrate with sandpaper to remove surface rust marks, ultrasonically clean it in absolute ethanol for 15 minutes to remove surface stains, wash with deionized water, dry, and finally roughen the surface.

[0038] (2) Slurry preparation: Take by weighing 57.8wt% aggregate micron alumina, 1wt% curing agent nano-zinc oxide, 0.6wt% nickel powder, 0.6wt% polytetrafluoroethylene according to the preparation steps, then pour Put it into a ceramic tank and perform ball milling in a planetary ball mill for 3 hours; measure 40wt% of the adhesive aluminum dihydrogen phosphate, and gradually add it dropwise to the mixture after ball milling, fully stir to form a sol, and let it stand for 1 to 2 days. ;Finally, spread the uniformly mixed slurry evenly on the pretreated 45 steel surface.

[0039] (3) Curing treatment: firstly cured at room temperature for 2 hours; then placed in a drying oven to raise the temperature to 50°C at a consta...

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PUM

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Abstract

The invention discloses a polytetrafluoroethylene-reinforced adhesion ceramic coating material. The polytetrafluoroethylene-reinforced adhesion ceramic coating material includes the following components: by weight, 57.4-58.4% of micron alumina, 0.5-1.5% of nano zinc oxide, 0.4-0.8% of nickel powder, 0.2-1% of polytetrafluoroethylene and 30-50% of aluminum dihydrogen phosphate. The invention also provides an adhesion ceramic coating prepared from the ceramic coating material and a preparation method of the adhesion ceramic coating. The polytetrafluoroethylene-reinforced adhesion ceramic coatingis prepared by using a sol-gel method, the preparation process is simple, no complicated-structure and precise coating equipment is needed, and the cost is low.

Description

technical field [0001] The invention relates to the technical field of metal surface materials, in particular to a polytetrafluoroethylene reinforced adhesive ceramic coating prepared by a sol-gel method, the preparation process is relatively simple, complex structure is not required, sophisticated coating equipment is required, the cost is low and its Preparation. Background technique [0002] In the field of industrial manufacturing and daily production, the surface and contact surface of most parts are easy to be damaged by friction and scratching, which will cause the function failure of the parts. It is a good idea to apply ceramic coating on the metal surface with a reasonable process. An effective way to protect and strengthen surfaces. The ionic bond and covalent bond structure of ceramic materials have high bond energy, strong interatomic bonding, low surface free energy, small atomic distance, and dense packing. These characteristics endow ceramic materials with h...

Claims

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Application Information

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IPC IPC(8): C04B28/34B05D3/00B05D3/02B05D3/04B05D5/08B05D7/14B05D7/24C04B24/26C04B111/20
CPCB05D3/002B05D3/0209B05D3/0254B05D3/0426B05D5/083B05D7/14B05D7/24C04B28/344C04B2111/00344C04B2111/00525C04B2111/2038C04B14/303C04B20/008C04B22/04C04B22/06C04B24/2682
Inventor 王永光钮市伟杨网孙平宋昊陈瑶赵栋
Owner SUZHOU UNIV
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