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

A kind of PFA coating containing micro-nano composite filler and preparation method thereof

A coating, nano-titanium dioxide technology, used in coatings, anti-corrosion coatings, devices for coating liquids on surfaces, etc. low effect

Active Publication Date: 2021-01-05
DALIAN UNIV OF TECH
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this coating can only be used at room temperature or low temperature, and cannot be applied in medium and high temperature fields such as flue gas waste heat recovery
For high-temperature baking coatings, such as PFA coatings and PTFE coatings, there is no relevant report on how to use nanoparticles and graphene micro-nano composite fillers to improve corrosion 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
  • A kind of PFA coating containing micro-nano composite filler and preparation method thereof
  • A kind of PFA coating containing micro-nano composite filler and preparation method thereof
  • A kind of PFA coating containing micro-nano composite filler and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] 2% fGO-TiO 2 Composite PFA coating (corresponding to 1.5% graphene content)

[0028] A. Add 0.2 g nano-TiO 2 and 5.2 g of KH550 (silane coupling agent) were added to 63 g of absolute ethanol, mechanically stirred at 78 °C for 6 h, and 5.6 g of deionized water was slowly added dropwise to the reaction solution during the reaction. After the reaction, the solvent in the upper layer was removed by centrifugation, washed several times with absolute ethanol, and then vacuum-dried at 60 °C for 15 h to obtain f-TiO 2 .

[0029] B. Add 0.05 g f-TiO 2and 0.15 g GO (graphene oxide) were added into 100 mL DMAC (N,N-dimethylacetamide), and sonicated for 1 h to form a homogeneous suspension. Afterwards, the mixture was stirred and reacted at 105 °C for 5 h, and the obtained product was filtered, washed, and vacuum-dried at 60 °C for 24 h.

[0030] C. Take 0.2 g of GO (graphene oxide)-nano TiO 2 For the complex, add an appropriate amount of N,N-dimethylacetamide, and sonicate f...

Embodiment 2

[0033] 1% fGO-TiO 2 Composite PFA coating (corresponding to 0.75% graphene content)

[0034] A. Add 0.2 g nano-TiO 2 and 5.2 g of KH550 (silane coupling agent) were added to 63 g of absolute ethanol, mechanically stirred at 78 °C for 6 h, and 5.6 g of deionized water was slowly added dropwise to the reaction solution during the reaction. After the reaction, the solvent in the upper layer was removed by centrifugation, washed several times with absolute ethanol, and then vacuum-dried at 60 °C for 15 h to obtain f-TiO 2 .

[0035] B. Add 0.05 g f-TiO 2 and 0.15 g GO (graphene oxide) were added into 100 mL DMAC (N, N-dimethylacetamide), and sonicated for 1 h to form a homogeneous suspension. Afterwards, the mixture was stirred and reacted at 105 °C for 5 h, and the obtained product was filtered, washed, and vacuum-dried at 60 °C for 24 h.

[0036] C. Take 0.1g of GO (graphene oxide)-nano TiO 2 For the complex, add an appropriate amount of N, N-dimethylacetamide, and sonicat...

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
diameteraaaaaaaaaa
thicknessaaaaaaaaaa
viscosityaaaaaaaaaa
Login to View More

Abstract

The invention relates to a PFA coating layer containing a micro-nano composite filler and a preparation method thereof, and belongs to the technical field of coating processing. A main body of the coating layer is high-temperature roasted PFA fluorocarbon resin, a titanium dioxide-loaded graphene oxide filler is added in the coating layer, graphene oxide is in a micrometer scale, and titanium dioxide is in a nanometer scale. The preparation method comprises the steps: (1) carrying out a reaction of nano TiO2 and GO to obtain a GO-nano TiO2 composite; (2) mixing the composite and a PFA organicdispersion emulsion evenly; and (3) carrying out sand spraying, phosphorization and other pre-treatment on a Q235 carbon steel workpiece, spraying with PFA having addition of the composite filler, carrying out temperature program-controlling sintering after spraying, and controlling the thickness of the coating layer to be 20-30 [mu]m. The coating layer has the advantages of good adhesion force, good anticorrosion property, long service life, large contact angle of the coating layer and the like, and solves the problem of more pores of a coating layer after a high-temperature roasted type coating solvent is volatilized to a certain degree. The coating layer also has good anticorrosion effect under relatively thin thickness of the coating layer, and can be applied in flue gas waste heat recovery, phase change heat transfer and other fields.

Description

technical field [0001] The invention relates to a PFA fluorocarbon resin, in particular to a nanomaterial-modified PFA fluorocarbon coating and a preparation method thereof, the main feature of which is that flake graphene loaded with nanomaterials is added to the PFA fluorocarbon resin, Thereby improving the adhesion, corrosion resistance, acid and alkali resistance, stain resistance and other properties of the fluorocarbon coating, and belongs to the technical field of paint processing. [0002] technical background [0003] In the petrochemical industry, the recovery and utilization of waste heat from flue gas has significant economic and social benefits. Corrosion and fouling problems in the flue gas are hidden dangers to the normal operation of the heat exchanger. Conventional organic coatings generally use epoxy resin, acrylic resin, etc., which have good anti-corrosion properties, but they cannot be used at high temperatures for a long time (about 150°C). Fluorocarbo...

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): C09D127/18C09D5/08C09D7/62B05D3/02B05D3/04B05D3/10B05D3/12B05D7/14
CPCB05D3/0254B05D3/0466B05D3/102B05D3/12B05D7/14B05D2202/15C08K9/12C08K2003/2241C09D5/08C09D127/18Y02P70/10
Inventor 马学虎杜宾港薛权
Owner DALIAN UNIV OF TECH
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