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

Preparation method of foam microporous material

A microporous material and foam technology, which is applied in the field of foam microporous material preparation, can solve the problems of easy collapse of cells, low porosity, and poor stability, and achieve fine and uniform pores, regular cell structure, and prevent foam from collapsing Effect

Active Publication Date: 2021-12-03
ZHEJIANG SCI-TECH UNIV
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These high value-added applications require uniform and controllable particle size of microspheres, and good preparation repeatability, otherwise the application effect will be seriously affected
It is difficult to achieve the structure control of microspheres with the only few preparation technologies of foam microporous materials at present.
Therefore, there is an urgent need to develop foam microcellular materials with excellent performance and controllable particle size and structure, good batch repeatability and preparation technology, and the stability of existing foam microcellular materials is relatively poor, and the cells after drying Easy to collapse, low porosity, affecting its processing and application performance

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
  • Preparation method of foam microporous material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A kind of preparation method of foam microporous material, wherein: comprise the following steps:

[0022] S1. 2 parts of surfactants, 1 part of foam stabilizer, 1 part of single-walled carbon nanotubes and 3 parts of graphene oxide are added to 5 parts of deionized water to prepare a homogeneous aqueous solution as the water phase; 20 parts of chemical Monomer, 4 parts of initiator and 40 parts of N-methylpyrrolidone are prepared into a homogeneous oil solution as the oil phase; the water phase and the oil phase are quickly mixed and then prepared by homogeneous emulsification, stirring or ultrasonic method to obtain W / O type Pre-emulsion; Surfactant is lauroyl glutamic acid, cetearyl glucoside, mass ratio is 1:1; Foam stabilizer includes 20wt% fatty acid methyl ester ethoxylate sulfonate, 35wt% polyether modification Silicone oil and 45wt% polyoxyethylene-polyoxypropylene copolymer; chemical monomer is styrene; initiator includes 15wt% tert-butyl peroxybenzoate, 30wt%...

Embodiment 2

[0026] A method for preparing a foam microcellular material, characterized in that: comprising the following steps:

[0027] S1. Add 5 parts of surfactants, 2 parts of foam stabilizers, 5 parts of single-walled carbon nanotubes and 5 parts of graphene oxide into the water phase and add to 7 parts of deionized water to prepare a homogeneous aqueous solution as the water phase ; 25 parts of chemical monomers, 5 parts of initiator and 50 parts of N-methylpyrrolidone are prepared into a homogeneous oil solution as the oil phase; the water phase and the oil phase are quickly mixed and prepared by homogeneous emulsification, stirring or ultrasonic method Obtain W / O type pre-emulsion; Surfactant is cocoyl diethanolamide; Foam stabilizer comprises 22wt% fatty acid methyl ester ethoxylate sulfonate, 37wt% polyether modified silicone oil and 41wt% polyoxyethylene- Polyoxypropylene copolymer; chemical monomer is ethyl styrene; initiators include 18 wt% tert-butyl peroxybenzoate, 32 wt% d...

Embodiment 3

[0031] A kind of preparation method of foam microporous material, wherein: comprise the following steps:

[0032] S1. 6 parts of surfactants, 3 parts of foam stabilizers, 20 parts of single-walled carbon nanotubes and 6 parts of graphene oxide are added to 10 parts of deionized water to prepare a homogeneous aqueous solution as the water phase; 30 parts of chemical Monomer, 8 parts of initiator and 60 parts of N-methylpyrrolidone are prepared into a homogeneous oil solution as the oil phase; the water phase and the oil phase are quickly mixed and then prepared by homogeneous emulsification, stirring or ultrasonic method to obtain W / O type Pre-emulsion; surfactant is cetearyl glucoside and cocoyl diethanolamide, mass ratio is 1:1, foam stabilizer includes 25wt% fatty acid methyl ester ethoxylate sulfonate, 40wt% polyether Modified silicone oil and 35wt% polyoxyethylene-polyoxypropylene copolymer; the chemical monomer is isooctyl acrylate, and the initiator includes: 20wt% tert-...

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
pore sizeaaaaaaaaaa
Login to View More

Abstract

The invention provides a preparation method of a foam microporous material. The preparation method comprises the following steps: S1, adding 2-6 parts of a surfactant and 1-3 parts of a foam stabilizer into 5-10 parts of deionized water to prepare a homogeneous aqueous solution as a water phase; preparing 20-30 parts of a chemical monomer, 4-8 parts of an initiator and 40-60 parts of N-methyl pyrrolidone into a homogeneous oil solution as an oil phase; rapidly mixing the water phase and the oil phase, and then preparing a W / O type pre-emulsion by a homogeneous emulsification, stirring or ultrasonic process; S2, enabling the pre-emulsion to rapidly pass through the pore diameter of a microporous membrane under the pressure of 0.5-2 Mpa to obtain a W / O type emulsion with uniform particle size; and S3, curing the prepared W / O type emulsion, filtering, washing and drying to finally obtain the foam microporous material. According to the preparation method of the foam microporous material, the average particle size of the foam microporous material is controllable, and the foam structure is regular.

Description

technical field [0001] The invention relates to the technical field of microporous materials, in particular to a preparation method of foamed microporous materials. Background technique [0002] Foam microporous materials have the advantages of good mechanical strength, excellent chemical stability, acid and alkali resistance, and easy modification. They are a very good multifunctional product. In recent years, foam microporous materials have been widely used in many fields such as biomedicine, environment, catalysts, and functional materials, such as drug sustained and controlled release carriers, bioseparation microsphere media, and microsphere reagents for clinical testing. These high value-added applications require uniform and controllable particle size of microspheres, and good preparation repeatability, otherwise the application effect will be seriously affected. It is also difficult to control the structure of microspheres with the few preparation technologies of fo...

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): C08J9/00C08L25/06C08L25/16C08L33/08C08L83/12C08L71/02C08K5/42C08F112/08C08F112/12C08F120/18C08F4/38
CPCC08J9/0033C08J9/0061C08F112/08C08F112/12C08F120/18C08J2325/06C08J2325/16C08J2333/08C08J2483/12C08J2471/02C08J2205/044C08F4/38
Inventor 孙辉许磊于斌
Owner ZHEJIANG SCI-TECH UNIV
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