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Self-lubricating composite coating with resistance to marine corrosion and wear and production technology of self-lubricating composite coating with resistance to marine corrosion and wear

A composite coating and preparation technology, which is applied in coatings, anti-corrosion coatings, polyamide coatings, etc., can solve problems such as corrosion and wear of transmission parts, and achieve the effects of small size restrictions, excellent mechanical properties, and uniform distribution

Active Publication Date: 2019-10-08
NORTHEASTERN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a marine corrosion-resistant and wear-resistant self-lubricating composite coating and its preparation process to solve the corrosion and wear problems of marine equipment and other transmission components serving in corrosive environments

Method used

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  • Self-lubricating composite coating with resistance to marine corrosion and wear and production technology of self-lubricating composite coating with resistance to marine corrosion and wear
  • Self-lubricating composite coating with resistance to marine corrosion and wear and production technology of self-lubricating composite coating with resistance to marine corrosion and wear
  • Self-lubricating composite coating with resistance to marine corrosion and wear and production technology of self-lubricating composite coating with resistance to marine corrosion and wear

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] In this example, 304 stainless steel is used as the alloy substrate, coated with a marine corrosion-resistant, wear-resistant self-lubricating composite coating, and the preparation process is as follows:

[0034] (1) According to the proportion, solid epoxy resin (E20) 12%, epoxy modified silicone resin (SH-023-7) 18%, polyamide resin (650) 6%, wetting and dispersing agent (SOLSPERSE32500) 4% (mass fraction) Configure organic film-forming substances, stir and disperse at a speed of 800r / min for 10 minutes until uniform and transparent (the total mass fraction of organic film-forming substances accounts for 40%);

[0035] (2) 15% of graphite powder, 22% of silicon carbide powder, and 23% of polytetrafluoroethylene micropowder are added to the mixed resin successively. Stir and disperse for 15 minutes at a speed of 1 / min, and mix evenly to form a mixture;

[0036] (3) Add grinding zirconium beads accounting for 80% of the total mass of the mixture, and grind and dispers...

Embodiment 2

[0041] The difference from Example 1 is that the composite coating formula is changed to:

[0042] In terms of mass percentage, solid epoxy resin (E20) 19%, epoxy modified silicone resin (SH-023-7) 24%, polyamide resin (650) 11%, wetting and dispersing agent (SOLSPERSE32500) 6% , graphite powder 10%, silicon carbide powder 16%, polytetrafluoroethylene powder 14%; among them, the mass fraction of organic film-forming substances accounts for 60% in total;

[0043] The thickness of the coating in this embodiment is about 200 μm, and the prepared composite coating has a compact structure, and the cross-sectional appearance is similar to figure 1 Similarly, it is well bonded to the alloy interface, and there is no obvious large hole defect in the coating, no cracks, etc.

Embodiment 3

[0045] The difference from Example 1 is that the composite coating formula is changed to:

[0046] In terms of mass percentage, solid epoxy resin (E20) 15%, epoxy modified silicone resin (SH-023-7) 20%, polyamide resin (650) 8%, wetting and dispersing agent (SOLSPERSE32500) 5% , graphite powder 15%, silicon carbide powder 24%, polytetrafluoroethylene powder 13%; among them, the mass fraction of organic film-forming substances accounts for 48% in total.

[0047] Coating alloy base material is Q235 steel, such as figure 2 As shown, the thickness of the coating in this example is about 200 μm, and the prepared composite coating has a compact surface appearance, no micron-level and above-sized defects, and the filler is dispersed and evenly distributed in the organic film-forming material, and is combined with the organic film-forming material. The material interface is well bonded. The interface bonding force between the coating and the alloy substrate was tested by pulling me...

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Abstract

The invention relates to the fields of marine corrosion and self-lubrication, and particularly provides a self-lubricating composite coating with resistance to marine corrosion and wear and a production technology of the self-lubricating composite coating with the resistance to marine corrosion and wear. The coating is composed of organic film forming matters and micron-sized filler, wherein the mass percentage of the organic film forming matters is 40%-60%, and the organic film forming matters comprise 10%-21% of epoxy resin, 15%-26% of epoxy-modified organic silicon resin, 6%-13% of polyamide resin and 4%-7% of a wetting dispersant; and the micron-sized filler is a combination of 10%-20% of graphite, 16%-30% of silicon carbide and 10%-25% of teflon. The coating is simple in production process and low in cost, the needed production raw materials can be directly bought on the market, and the coating not only can be used for marine equipment, but also is suitable for transmission partswhich serve in corrosive environments of aviation, electric power, chemical engineering and the like. On the basis of high corrosion resistance and flexibility, of the organic film forming matters, incombination with wear resistance and self-lubrication of the micron-sized filler, the composite coating has high impact toughness and excellent comprehensive performance of marine corrosion resistance, wear resistance, self-lubrication and the like.

Description

technical field [0001] The invention relates to the field of marine corrosion and self-lubrication, and in particular provides a marine corrosion-resistant and wear-resistant self-lubricating composite coating and a preparation process thereof, which can be used for joint bearings, bushes, shafts and other transmission and moving parts. Background technique [0002] For a long time, corrosion and wear problems have seriously restricted the development of marine, chemical, bioengineering, mechanical processing, transportation, aerospace and many other industrial fields, causing the explosion of the Palper Alpha oil rig and the leakage of Qingdao Sinopec Donghuang oil pipeline , German high-speed rail ICE 884 derailment and other major disasters. The development of marine equipment and the construction of marine engineering are important contents of promoting and implementing the national marine strategy. In view of the fact that marine equipment and marine engineering work i...

Claims

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Application Information

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IPC IPC(8): C09D163/00C09D183/06C09D177/00C09D5/08C09D7/61C09D7/65B05D7/14B05D7/24B05D3/02
CPCB05D3/0254B05D7/14B05D7/24B05D2504/00B05D2505/00B05D2518/10C09D5/08C09D183/06C09D7/61C09D7/65C08L63/00C08L77/00C08L27/18C08K3/04C08K3/34
Inventor 陈明辉徐雪磊王金龙王群昌周文王福会
Owner NORTHEASTERN UNIV
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