Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Polyimide composite coating and preparation method thereof and application thereof

A polyimide and composite coating technology, applied in coatings, anti-corrosion coatings, anti-fouling/underwater coatings, etc., can solve the problems of unsuitable on-site construction and cumbersome procedures, and achieve low cost, simple process, combined with good effect

Active Publication Date: 2016-08-10
NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
View PDF3 Cites 17 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This patent is the previous research result of our research group. It uses electroless plating to prepare metal / polymer composite microspheres, which not only limits the use of metal in composite materials, but also has cumbersome procedures and is not suitable for on-site construction.

Method used

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
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Polyimide composite coating and preparation method thereof and application thereof
  • Polyimide composite coating and preparation method thereof and application thereof
  • Polyimide composite coating and preparation method thereof and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～3

[0080] In the following three examples, the substrate material is a composite coating of PI / flake graphite (mass ratio 10%, 20%, 30%) deposited on the surface of a Q235 steel sheet with a thickness of about 2 mm, and the thickness of the coating is ~ 100 μm. The material is well combined; the specific preparation method of the PI / graphite composite coating is as follows:

[0081] 1. Weigh 10.002g of 4,4'-diaminodiphenyl ether (ODA), dissolve it in 200ml of N,N-dimethylformamide (DMF), stir to dissolve it completely (5min); then weigh Take 10.906g of pyromellitic dianhydride (PMDA), add a small amount of multiple times to the above solution and stir; continue to stir for 8 to 10 hours after the addition is complete to obtain a polyimide precursor polyamic acid solution;

[0082] 2. Add the additive - flake graphite (size is 20 μm) to the polyamic acid solution, the mass fraction of flake graphite is 10%, 20%, 30% respectively, and ultrasonically stir for 1 to 2 hours to finally...

Embodiment 4～6

[0090] In the following three examples, the substrate material is a 316 stainless steel sheet with a thickness of about 2 mm, and the surface deposits PI / nanometer Cu (mass ratio 10%, 20%, 30%) composite coating, and the thickness of the coating is ~ 20 μm, and the coating and the substrate The material is well combined; the specific preparation method of the PI / Cu composite coating is as follows:

[0091] 1. Weigh 10.002g of 4,4'-diaminodiphenyl ether (ODA), dissolve it in 200ml of N,N-dimethylformamide (DMF), stir to dissolve it completely (5min); then weigh Take 10.906g of pyromellitic dianhydride (PMDA), add a small amount of multiple times to the above solution and stir; continue to stir for 8 to 10 hours after the addition is complete to obtain a polyimide precursor polyamic acid solution;

[0092] 2. Add additive-nano-copper (particle size: 300nm) to the polyamic acid solution, the mass fraction of nano-copper is 10%, 20%, 30% respectively, and ultrasonically stir for 1-2...

Embodiment 7～9

[0100] In this embodiment, the substrate material is a PI / micron Cu (mass ratio of 10%, 20%, 30%) composite coating deposited on the surface of a Q345 steel sheet with a thickness of about 1.5 mm, and the thickness of the coating is ~ 200 μm. The coating and the substrate material Combine well; The specific preparation method of this PI / micron Cu composite coating is as follows:

[0101] 1. Weigh 10.002g of 4,4'-diaminodiphenyl ether (ODA), dissolve it in 200ml of N,N-dimethylformamide (DMF), stir to dissolve it completely (5min); then weigh Take 10.906g of pyromellitic dianhydride (PMDA), add a small amount of multiple times to the above solution and stir; continue to stir for 8 to 10 hours after the addition is complete to obtain a polyimide precursor polyamic acid solution;

[0102] 2. Add additive-micron copper (particle size: 200 mesh) to the polyamic acid solution, the mass fraction of micron copper is 10%, 20%, and 30% respectively, ultrasonically and stirred for 1-2 ho...

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

PUM

PropertyMeasurementUnit
Thicknessaaaaaaaaaa
Thicknessaaaaaaaaaa
Sizeaaaaaaaaaa
Login to View More

Abstract

The invention discloses a preparation method of polyimide composite coating. The method includes the following steps: step 1: preparing the polyimide spraying raw material, wherein the polyimide spraying raw material is thermosetting polyimide composite precursor slurry, thermoplastic polyimide composite precursor slurry or thermoplastic polyimide composite powder; step 2: performing surface oil-removing of the matrix and coarsening processing; and step 3: sending the spraying raw material prepared by step 1 to a thermal spraying flame flow, and spraying on the treated matrix surface to form the polyimide composite coating. The invention discloses the preparation method of polyimide composite coating, and the method has simple technology, high efficiency and low cost, and is suitable for site operation. The spraying is not limited by the size and shape of the workpiece. The prepared polyimide composite coating is combined well with the matrix, has effective antifouling and anticorrosion performances, and can be used for a plurality of antifouling and anticorrosion occasions such as external surface of industrial component used for ocean.

Description

technical field [0001] The invention relates to the technical field of composite coatings, in particular to a polyimide composite coating and its preparation method and application. Background technique [0002] The rapid development of the marine economy puts forward more demands and higher quality requirements for engineering equipment and living facilities in the seawater environment. In fields such as ships and ships, marine engineering equipment, and marine entertainment facilities, there will be more and more Most of the equipment is in service in the seawater environment. Biofouling and corrosion of marine engineering materials is a worldwide problem and the focus of attention that has always existed with the development and utilization of oceans by humans. [0003] Extensive research has been carried out on the corrosion of marine engineering materials at home and abroad, including the selection of corrosion-resistant material systems, surface coatings, cathodic pro...

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

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): C09D179/08C09D5/16C09D5/08C09D7/12C08G73/10B05D1/00B05D1/08B05D7/24
CPCB05D1/08B05D1/62B05D7/24B05D2301/00B05D2320/00B05D2505/50C08G73/1071C08K3/04C08K3/08C08K5/14C08K5/20C08K2003/085C08K2201/011C09D5/08C09D5/1687C09D179/08
Inventor 刘奕王鑫龚永锋黄晶所新坤陈秀勇李华
Owner NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com