Polyimide-based self-lubricating abrasion-resistant coating material and preparation method thereof

A polyimide-based, wear-resistant coating technology, which is applied in coatings, devices for coating liquids on surfaces, and pre-treated surfaces, can solve problems such as low friction, high preparation costs, and complexity, and achieve good reduction Friction and anti-wear performance, convenient preparation and construction, and simple preparation method
CN102286248BInactive Publication Date: 2013-04-10SOUTH CHINA UNIV OF TECH
2 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SOUTH CHINA UNIV OF TECH
Publication Date
2013-04-10
Estimated Expiration
Not applicable · inactive patent

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention discloses a polyimide-based self-lubricating abrasion-resistant coating material and a preparation method thereof. The coating material consists of the following raw materials in part by weight: 100 parts of polyimide bonded resin, 10 to 50 parts of irradiation polytetrafluoroethylene micro-powder solid lubricating agent and 200 to 400 parts of organic solvent. The preparation method comprises the following steps of: weighing and mixing the raw materials, and performing ultrasonic dispersion and magnetic stirring to form uniform resin solution; pouring the resin solution into a spray gun, and spraying the resin solution to the surface of a workpiece subjected to surface polishing and cleaning treatment under the pressure of 0.10 to 0.40Pa and under the action of oil-free compressed air, wherein the distance between the nozzle of the spray gun and the workpiece is not less than 20 centimeters, and the spray gun and the workpiece form an angle of 60 to 90 degrees; and putting the coated workpiece into a muffle furnace, performing section curing, cooling the workpiece to room temperature together with the furnace after curing, and thus obtaining the abrasion-resistant coating material on the surface of the workpiece. The coating material has the properties of low friction, high load resistance, abrasion resistance and high temperature resistance; and the preparationmethod is simple, easy in operation and low in cost.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to a polyimide-based self-lubricating wear-resistant coating and a preparation method thereof. Background technique

[0002] With the rapid development of modern automobile industry, machinery industry, aviation and aerospace industry, more and more high-load cylinder pistons and sliding parts are used under the action of dry friction, hydraulic pressure and lubricating oil medium. Because these parts are often used in high-load, high-speed, dry friction or oily media, due to the temperature rise during the friction process, the surface of the parts will be sintered and strained, so that the parts will fail, which greatly shortens the service life of the equipment and increases the economic cost. . Using surface engineering technology to prepare one or more layers of composite organic wear-resistant self-lubricating coatings on the surface of workpieces is a very effective way to improve the bearing capacity of cylinder pistons a...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More