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

A method for preparing plastic foam with precise pore size using glassy gel as a template

A plastic foam and glass state technology, applied in the field of foam plastics, can solve the problems of boiling and vaporization of low-boiling hydrocarbon foaming agents, large investment in equipment, strict environmental protection requirements, etc., to achieve improved foaming efficiency, small investment in equipment, and high molding efficiency high effect

Active Publication Date: 2020-06-05
王盼
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the suspension polymerization process, the high-temperature and high-pressure polymerization process is used, but these preparation methods have the following disadvantages: large investment in equipment, high energy consumption for the reaction, and the exothermic polymerization under high temperature conditions is easy to boil and vaporize the low-boiling hydrocarbon blowing agent, which is difficult to prepare Stable foamed microspheres with low operational safety, strict environmental protection requirements, and difficult to control production costs

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A kind of plastic foam of precise size prepared by using glassy gel as a template, including the following raw materials in parts by weight: 40 parts of fluoropolymer with melt viscosity, 38 parts of polyparaphenylene terephthalamide, and 23 parts of filler parts, foaming agent 15 parts.

[0026] A method for preparing plastic foams with precise dimensions using glassy gel as a template, the operation steps are as follows:

[0027] 1) Mix viscous fluoropolymers, liquid crystal polymers, fillers, and foaming agents in parts by weight, slowly pour into the glassy gel, and make it completely filled;

[0028] 2) After the filled template is heated rapidly to generate bubbles, it is cooled and solidified to form;

[0029] 3) Soak the formed template in sodium hydroxide solution until the glass gel is completely dissolved to obtain a plastic foam with a precise pore size opposite to the glass gel pores.

[0030] The glassy gel is a silica aerogel with a pore size of 20-30 μ...

Embodiment 2

[0033] A kind of plastic foam of precise size prepared by using glassy gel as a template, including the following raw materials in parts by weight: 34 parts of fluoropolymer with melt viscosity, 5 parts of polyparabenamide, 19 parts of filler, and 12 parts of blowing agent share.

[0034] A method for preparing plastic foams with precise dimensions using glassy gel as a template, the operation steps are as follows:

[0035] 1) Mix viscous fluoropolymers, liquid crystal polymers, fillers, and foaming agents in parts by weight, slowly pour into the glassy gel, and make it completely filled;

[0036] 2) After the filled template is heated rapidly to generate bubbles, it is cooled and solidified to form;

[0037] 3) Soak the formed template in sodium hydroxide solution until the glass gel is completely dissolved to obtain a plastic foam with a precise pore size opposite to the glass gel pores.

[0038] The filler is composed of polyethylene and polypropylene mixed at a ratio of ...

Embodiment 3

[0042] A plastic foam of precise size prepared by using glassy gel as a template, comprising the following raw materials in parts by weight: 35 parts of fluoropolymer with melt viscosity, 43 parts of poly-p-phenylenebenzothiazole, 20 parts of filler, hair Foam agent 16 parts.

[0043] A method for preparing plastic foams with precise dimensions using glassy gel as a template, the operation steps are as follows:

[0044] 1) Mix viscous fluoropolymers, liquid crystal polymers, fillers, and foaming agents in parts by weight, slowly pour into the glassy gel, and make it completely filled;

[0045] 2) After the filled template is heated rapidly to generate bubbles, it is cooled and solidified to form;

[0046] 3) Soak the formed template in sodium hydroxide solution until the glass gel is completely dissolved to obtain a plastic foam with a precise pore size opposite to the glass gel pores.

[0047] The filler is composed of polyethylene and polypropylene mixed at a ratio of 1:3 ...

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

No PUM Login to View More

Abstract

The invention relates to the technical field of foamed plastic, and in particular relates to a method for preparing precise-aperture plastic foam by taking glassy state gel as a template. The method comprises the following steps: introducing a fluorine polymer, a liquid crystal polymer and a filler into the glassy state gel, forming uniform apertures of the fluorine polymer and the liquid crystal polymer by utilizing many uniform pores of the glassy state gel, and further completely dissolving and removing the glassy state gel, so that the high-precision-aperture plastic foam is obtained. The method provided by the invention provides technical support for preparation of high-precision-aperture foam pores by virtue of special polymers. The method provided by the invention is low in equipment investment and low in energy consumption during reaction, and the glassy state gel can be repeatedly used, so that the method provided by the invention is applicable to large-scale popularization.

Description

technical field [0001] The invention specifically relates to the field of foamed plastics, in particular to a method for preparing plastic foams with precise apertures by using glassy gel as a template. Background technique [0002] Foam plastic is an aggregate formed by gas dispersed in solid polymer, which has the advantages of light weight, heat insulation, cushioning, insulation, anti-corrosion, and low price. Therefore, it is widely used in daily necessities, packaging, industry, agriculture, transportation, military industry, It is widely used in aerospace industry. At present, the main varieties of foamed plastics are polystyrene (PS), polyethylene (PE), and polyurethane (PUR). [0003] Stable blowing of the foam is the key to obtaining a good foam. It is difficult to obtain stable and uniform cells by conventional direct addition of blowing agent. In recent years, the use of expanded microspheres has greatly improved the stability and uniformity of foam control. ...

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): C08L79/04C08L77/10C08L101/04C08L23/06C08L23/12C08J9/14C08J9/08C08J9/04C08J9/26
CPCC08J9/04C08J9/08C08J9/141C08J9/26C08J2201/044C08J2203/02C08J2203/14C08J2300/102C08J2377/10C08J2379/04C08J2400/102C08J2477/10C08L77/10C08L79/04C08L101/04C08L2201/08C08L2203/14C08L2205/035C08L23/06C08L23/12
Inventor 陈庆昝航
Owner 王盼