Unlock instant, AI-driven research and patent intelligence for your innovation.

Method for producing coated article, and coated article

A manufacturing method and article technology, applied in chemical instruments and methods, layered products, synthetic resin layered products, etc., can solve the problem of poor durability such as wear resistance, adverse effects of corrosion resistance of substrates, and difficulty in obtaining thick materials. layers, etc.

Active Publication Date: 2015-03-18
DAIKIN IND LTD
View PDF9 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the aluminum oxide in the undercoat layer may settle, the laminate adversely affects the corrosion resistance of the base material. In addition, since the top coat layer is made of PTFE, it is difficult to obtain a thick layer by general industrial production methods. Layer, there is a problem of poor durability such as abrasion resistance

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
  • Method for producing coated article, and coated article
  • Method for producing coated article, and coated article
  • Method for producing coated article, and coated article

Examples

Experimental program
Comparison scheme
Effect test

manufacture example 1

[0160] Production Example 1 Preparation of Polyethersulfone Resin Aqueous Dispersion

[0161] 60 parts of polyethersulfone resin [PES] with a number average molecular weight of about 24000 and 60 parts of deionized water were stirred in a ceramic ball mill for about 10 minutes until the particles formed by PES were completely pulverized. Next, 180 parts of N-methyl-2-pyrrolidone (hereinafter referred to as NMP) was added and pulverized for 48 hours to obtain a dispersion. The obtained dispersion was further pulverized with a sand mill for 1 hour to obtain a PES aqueous dispersion having a PES concentration of about 20%. The average particle diameter of the particles made of PES in the PES aqueous dispersion was 2 μm.

manufacture example 2

[0162] Production Example 2 Preparation of Polyamideimide Resin Aqueous Dispersion

[0163] A polyamide-imide resin [PAI] varnish (containing 71% of NMP) having a solid content of 29% was put into water to precipitate PAI. It was pulverized in a ball mill for 48 hours to obtain a PAI aqueous dispersion. The obtained aqueous PAI dispersion had a solid content of 20%, and the average particle diameter of PAI in the aqueous PAI dispersion was 2 μm.

[0164] Production Example 3 Preparation of coating composition (i) for primer

[0165] The PES aqueous dispersion obtained in Production Example 1 and the PAI aqueous dispersion obtained in Production Example 2 were mixed so that PES was 85% of the total solid content of PES and PAI, and tetrafluoroethylene homopolymer [ TFE homopolymer] aqueous dispersion (average particle diameter of 0.28 μm, solid content of 60%, containing 6% of polyether-based nonionic surfactant (polyoxyethylene tridecyl) relative to TFE homopolymer ether) a...

manufacture example 4

[0166] Production Example 4 Preparation of Powder Coating Composition Containing a Filler

[0167] In tetrafluoroethylene / perfluoro(alkyl vinyl ether) [PFA] powder coating (trade name: ACX-31, manufactured by Daikin Industries, Ltd., the average particle size of PFA is 25 μm), add 0.5 % glass flakes (relative density of about 2.5, average particle size of 40 μm; glass flakes coated with titanium dioxide) were used as fillers and mixed to obtain a powder coating composition.

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
particle sizeaaaaaaaaaa
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
Login to View More

Abstract

Disclosed is a method for producing a coated article, which comprises: a step (1) in which a primer coating layer (Ap) is formed by applying a primer coating composition (i), which is composed of a fluorine-containing polymer (a) and a heat-resistant resin, over a base; a step (2) in which a fluorine-containing powder coating layer (Bp) is formed by applying a fluorine-containing powder (ii), which is composed of a melt-processable fluorine-containing polymer (b) and a filler, over the primer coating layer (Ap); a step (3) in which a fluorine-containing powder coating layer (Cp) is formed by applying a fluorine-containing powder (iii), which is composed of a melt-processable fluorine-containing polymer (c), over the fluorine-containing powder coating layer (Bp); and a step (4) in which a coated article that is composed of the base, a primer layer (A), a fluorine-containing layer (B) and a fluorine-containing layer (C) is formed by firing a coating film laminate that is composed of the primer coating layer (Ap), the fluorine-containing powder coating layer (Bp) and the fluorine-containing powder coating layer (Cp).

Description

technical field [0001] The present invention relates to a method of manufacturing a covered article and the covered article. Background technique [0002] Fluoropolymers such as tetrafluoroethylene / perfluoro(alkyl vinyl ether) copolymer [PFA] are widely used because of their low coefficient of friction and excellent properties such as non-adhesive properties, chemical resistance, and heat resistance. Surface processing of food industry supplies, kitchen utensils such as frying pans or pots, household appliances such as irons, electrical industry supplies, and machinery industry supplies. [0003] Surface processing is carried out by forming a layer of fluoropolymer on the base material. If the fluoropolymer used is a melt-processable fluoropolymer such as PFA, it can be easily obtained by normal industrial production methods. The thicker the layer, the surface of the resulting article tends to exhibit the various properties possessed by the fluoropolymer. [0004] However,...

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
Patent Type & Authority Patents(China)
IPC IPC(8): B05D7/24B05D1/36B32B27/30C09D5/00C09D5/03C09D127/12C09D129/10C09D201/00
CPCB05D7/56C09D127/18C08L81/06B05D2506/10C09D5/03C08L79/08C08L81/00C08L2666/20B05D1/36B05D7/24B32B27/30
Inventor 山口诚太郎鸟居宽
Owner DAIKIN IND LTD