Process for producing cross-linked polymer microsphere with even grain diameter

A cross-linked polymer and uniform technology, applied in the field of preparation of cross-linked polymer microspheres with uniform particle size, can solve difficulties and other problems, and achieve the effect of smooth surface and uniform particle size

Inactive Publication Date: 2008-08-20
杜天鹏
View PDF5 Cites 26 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, it is very difficult to obtain micron-sized monodisperse polymer microspheres with uniform particle size and crosslinking.

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
  • Process for producing cross-linked polymer microsphere with even grain diameter
  • Process for producing cross-linked polymer microsphere with even grain diameter
  • Process for producing cross-linked polymer microsphere with even grain diameter

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0026] The reaction vessel uses a 250mL four-neck flask with PTFE stirring, and condensed water is passed through, and the N 2 Protection, insert the thermometer. Use a water bath to heat.

[0027] Styrene: 10 g; Trimethylolpropane triacrylate 0.6 g; PVPK30: 0.8 g; AIBN: 0.1 g; Ethanol: 120 g. Will N 2 Insert the inlet under the liquid phase, replace the air for 1h, and then continue to pass N through the gas phase 2 . The temperature was raised to 70°C, the stirring speed was 80rpm, and the polymerization was carried out for 24h. Wash three times with ethanol, filter under reduced pressure, and dry the product in vacuum. The obtained polymer microspheres had a particle size of 1.6 μm and were left at 180° C. for 5 minutes without deformation. microsphere TEM see figure 1 .

example 2

[0029] The reaction vessel uses a 250mL four-neck flask with PTFE stirring, and condensed water is passed through, and the N 2 Protection, insert the thermometer. Use a water bath to heat. Styrene: 10 g; glycidyl methacrylate: 0.5 g; PVPK30: 0.8 g; AIBN: 0.1 g; ethanol: 120 g; ethylene glycol monomethyl ether: 10 g. Will N 2 Insert the inlet under the liquid phase, replace the air for 1h, and then continue to pass N through the gas phase 2 . The temperature was raised to 65°C, the stirring speed was 60rpm, and the polymerization was carried out for 20h. Wash three times with ethanol, filter under reduced pressure, and dry the product in vacuum. The obtained polymer microspheres had a particle size of 1.7 μm and were left at 180° C. for 5 minutes without deformation. microsphere TEM see figure 2 .

example 3

[0031] The reaction vessel uses a 250mL four-neck flask with PTFE stirring, and condensed water is passed through, and the N 2 Protection, insert the thermometer. Use a water bath to heat. Styrene: 10 g; Dipentaerythritol hexapropylene 0.6 g; PVPK30: 0.8 g; AIBN: 0.1 g; Ethanol: 120. Will N 2 Insert the inlet below the liquid level to replace the air for 1h, then lift the gas phase and continue to pass N 2 . The temperature was raised to 75°C, the stirring speed was 80rpm, and the polymerization was carried out for 22h. Wash three times with ethanol, filter under reduced pressure, and dry the product in vacuum. The obtained polymer microspheres had a particle size of 1.65 μm and were left at 180° C. for 5 minutes without deformation. microsphere TEM see image 3 .

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
particle diameteraaaaaaaaaa
particle diameteraaaaaaaaaa
Login to view more

Abstract

The invention relates to a preparation method of crosslinked polymer microphere with uniform particle size. By adopting the process of dispersion and polymerization, styrene or acrylic ester is taken as a monomer; a monodisperse crosslinked polymer microphere with uniform particle size is prepared by steric hindrance dispersant and multi-functional crosslinker. The microphere has regular spherical and solid, a smooth surface, no damage or defect, and the strength and flexibility meet the requirements of producing ACF.

Description

technical field [0001] The invention relates to a preparation method of a monodisperse cross-linked micron-scale polymer microsphere with uniform particle size. This polymer microsphere is mainly used to prepare conductive particles of anisotropic conductive film (ACF). ACF is mainly used for the connection of display panels and flexible circuit boards of electronic calculators, liquid crystals, plasmas, and various semiconductors. Background technique [0002] The rapid development of the information and communication industry has driven the refinement and integration of electronic circuit board circuits. More and more integrated circuits need to be assembled with circuit boards. Traditional tin-lead soldering can no longer meet the requirements. The anisotropic conductive film is formed by uniformly dispersing nickel / gold polymer microspheres (particle size 1.0 μm to 5.0 μm) in a thermosetting resin and coating on a polyester film with a thickness of 12.5 μm. The anisotr...

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): C08F212/04C08F220/00C08F2/16
Inventor 李兴存单敏
Owner 杜天鹏
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap