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

Nanometer modified epoxy powder coating preparation process

A technology of nano-modification and epoxy powder, which is applied in powder coatings, epoxy resin coatings, coatings, etc., and can solve the problem of easy agglomeration, inability to give full play to the excellent properties of nano-materials, and affecting the rheology and smoothness of powder coatings, etc. problems, to achieve the effect of reducing costs

Inactive Publication Date: 2004-11-17
宁波市鄞州东海粉末涂料有限公司
View PDF0 Cites 11 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the specific surface area of ​​inorganic nanoparticles is large, the surface activity is high, and the particles are easy to agglomerate, and the viscosity of the epoxy resin itself is high. It becomes difficult to disperse the nanoparticles uniformly in the epoxy resin matrix. Mechanical blending method or The melt blending method is difficult to achieve uniform distribution of nanoparticles in the epoxy resin matrix, thus affecting the rheology and smoothness of powder coatings, and cannot give full play to the excellent characteristics of nanomaterials

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
  • Nanometer modified epoxy powder coating preparation process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] 1), 2000 gram E-12 epoxy resins are dissolved in 4000 milliliters of acetone, then add the nanometer titanium dioxide that accounts for 2% of epoxy resin massfraction;

[0018] 2), the above-mentioned system was dispersed with ultrasonic waves for 90 minutes under mechanical stirring, and acetone was removed under reduced pressure to obtain nano-modified epoxy resin;

[0019] 3) Weigh the nano-modified epoxy resin, curing agent, leveling agent, filler, pigment and additives according to the designed formula, crush until the particle size is less than 5mm, and then stir and mix in the mixer for 3 minutes;

[0020] 4) Put the uniformly mixed material into the screw extruder to melt and extrude, the temperature of the machine cavity is 100-120°C, the temperature of the extruder head is 120°C-135°C, and the average residence time of the material does not exceed 30 seconds;

[0021] 5) The extruded material is compressed into tablets by a cooling tablet machine, sent to a mi...

Embodiment 2

[0023] 1), 2000 grams of E-12 epoxy resins are dissolved in 4000 milliliters of acetone, then add the nano silicon dioxide that accounts for 5% of epoxy resin massfraction;

[0024] 2), the above-mentioned system was dispersed with ultrasonic waves for 120 minutes under mechanical stirring, and acetone was removed under reduced pressure to obtain nano-modified epoxy resin;

[0025] 3) Weigh the nano-modified epoxy resin, curing agent, leveling agent, filler, pigment and additives according to the designed formula, crush until the particle size is less than 5mm, and then stir and mix in the mixer for 3 minutes;

[0026] 4) Put the uniformly mixed material into the screw extruder to melt and extrude it. The temperature of the machine cavity is 100-120°C, the temperature of the extruder head is 120°C-135°C, and the average residence time of the material is no more than 30 seconds;

[0027] 5) The extruded material is compressed into tablets by a cooling tablet machine, sent to a ...

Embodiment 3

[0029] 1), 2000 gram E-12 epoxy resins are dissolved in 4000 milliliters of acetone, then add the nanometer calcium carbonate that accounts for 10% of epoxy resin massfraction;

[0030] 2), the above-mentioned system was dispersed with ultrasonic waves for 200 minutes under mechanical stirring, and acetone was removed under reduced pressure to obtain nano-modified epoxy resin;

[0031] 3) Weigh the nano-modified epoxy resin, curing agent, leveling agent, filler, pigment and additives according to the designed formula, crush until the particle size is less than 5mm, and then stir and mix in the mixer for 3 minutes;

[0032] 4) Put the uniformly mixed material into the screw extruder to melt and extrude it. The temperature of the machine cavity is 100-120°C, the temperature of the extruder head is 120°C-135°C, and the average residence time of the material is no more than 30 seconds;

[0033] 5) The extruded material is compressed into tablets by a cooling tablet machine, sent t...

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
Login to View More

Abstract

The invention discloses a nanometer modified epoxy powder coating preparation process comprising, dissolving epoxy resin into 1-2 times mass of acetone, charging 1%-15% mass fraction of nano particles based on epoxy resin, dispersing the system with ultrasonic wave 15-300 minutes while mechanically agitating, removing acetone through decompression to obtain nano modified epoxy resin, carrying out molten extrusion into in bolt extrusion machine, pressing into sheets or strips by means of tablet press machine.

Description

technical field [0001] The invention relates to a preparation process of nano-modified epoxy powder paint. Background technique [0002] Powder coating is a rapidly developing coating variety, which has the advantages of pollution-free, resource-saving, and high efficiency. Among them, epoxy powder coating is widely used for its strong adhesion, high temperature resistance, corrosion resistance and excellent electrical insulation properties. Widely used in the surface coating of household appliances, high-voltage motors, electronic devices and lighting fixtures. It is predicted that the demand for powder coatings in the home appliance industry will increase by more than 15% per year, and the market potential of powder coatings is huge. However, epoxy powder coatings generally have problems such as thicker coatings, poor scratch resistance and aging resistance. One of the reasons is that the inorganic particles are too large and unevenly dispersed in the polymer matrix. [...

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 Applications(China)
IPC IPC(8): C09D5/03C09D163/00
Inventor 王立陈召珠陈彩亚俞豪杰石全江国华陈涛
Owner 宁波市鄞州东海粉末涂料有限公司
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