Stable multilayer-film structural foaming agent and preparation method thereof

A multi-layer film and foaming agent technology, applied in the direction of fire-resistant coatings, etc., can solve the problems of unsatisfactory results, inconvenient operation, uneven distribution and other problems, and achieve the effects of excellent foaming performance, improved stability and improved quality

Inactive Publication Date: 2013-02-06
WUHAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to improve the foam stability, scholars at home and abroad have carried out a lot of research, and there are many ways to prepare foam, mainly including oscillation method, pouring method, stirring method, and air flow method. Among them, the oscillation method, pouring method and air flow method are all inconvenient to operate. , complex defects, and the results are not ideal
[0004] Most of the foam agents currently used in the field of lightweight refractory materials use sodium lauryl sulfate as the main agent and are compounded and modified with rosin soap. The resulting foam has a large size, uneven distribution, and is very unstable. sex
At present, there are many ways to prepare foam, mainly including oscillation method, pouring method, stirring method and air flow method. Among them, the oscillation method, pouring method and air flow method all have the disadvantages of inconvenient operation and complicated operation.

Method used

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  • Stable multilayer-film structural foaming agent and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A stable multilayer film structure foaming agent and a preparation method thereof. Under the condition of 15~25°C, first use 20~30wt% of the main agent, 30~40wt% of the auxiliary agent and 40~50wt% of the foam stabilizer as raw materials, and then add 10~15 times the mass of the raw materials to remove Ionized water, stirring for 5~10min, the stirring speed is 800~1000r / min. A stable multilayer film structure foam is obtained.

[0022] In this embodiment: the main agent is sodium lauryl sulfate; the auxiliary agent is lauryl alcohol; the foam stabilizer is sodium carboxymethyl cellulose.

[0023] The stable multi-layer film structure foam agent prepared in this example has been tested: the expansion ratio is 5.5-6.5; the bleeding volume in 1h is 0-1mL, and the collapse volume in 1h is 0-2mL; the bleeding volume in 2h is 2-4mL, and the collapse volume in 2h 5~6mL.

Embodiment 2

[0025] A stable multilayer film structure foaming agent and a preparation method thereof. Except following raw material, all the other are with embodiment 1.

[0026] In this embodiment: the main agent is sodium dodecylbenzenesulfonate; the auxiliary agent is polyethylene glycol; the foam stabilizer is gelatin.

[0027] The stable multi-layer film structure foam agent prepared in this example has been tested: the expansion ratio is 5.5-6.5; the bleeding volume in 1h is 0-2mL, and the collapse volume in 1h is 0-3mL; the bleeding volume in 2h is 3-5mL, and the collapse volume in 2h 6~8mL.

Embodiment 3

[0029] A stable multilayer film structure foaming agent and a preparation method thereof. Except following raw material, all the other are with embodiment 1.

[0030] In this embodiment: the main agent is sodium dodecyl sulfonate; the auxiliary agent is cetyl alcohol; the foam stabilizer is sodium carboxymethyl starch.

[0031] The stable multi-layer film structure foam agent prepared in this example has been tested: the expansion ratio is 5.5-7.0; the bleeding volume in 1h is 0-0.5mL, and the collapse volume in 1h is 0-1mL; the bleeding volume in 2h is 1-2mL, and it collapses in 2h Volume 2~4mL.

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Abstract

The invention particularly relates to a stable multilayer-film structural foaming agent and a preparation method of the stable multilayer-film structural foaming agent. The technical scheme is that the preparation method comprises steps as follows: getting 20 to 50wt% of main agent, 20 to 50wt% of assistant and 20 to 50wt% of foam stabilizer as the raw materials at 15 to 25 DEG C; then adding foam stabilizer of which the mass is 10 to 20 times that of the raw materials mentioned above; and agitating for 5 to 15 minutes, so as to obtain the stable multilayer-film structural foaming agent, wherein the main agent is one of sodium lauryl sulfate, sodium dodecyl benzene sulfonate, sodium dodecyl sulfate, alkylphenol ethoxylates and fatty alcohol-polyoxyethylene ether; the assistant is one of dodecanol, polyethylene glycol, setanol, octadecanol and lauromacrogol; and the foam stabilizer is one of sodium carboxymethylcellulose, gelatin, sodium carboxymethyl starch, arabia gum adhesive and hydroxyethyl cellulose. The preparation method has the characteristics of being simple, convenient to operate, and short in preparation time and the like; and the prepared stable multilayer-film structural foaming agent is relatively small in dimension, uniform in distribution, full in foaming and high in stability.

Description

technical field [0001] The invention belongs to the technical field of foaming agents for lightweight refractory materials, and in particular relates to a stable multilayer film structure foaming agent and a preparation method thereof. Background technique [0002] At present, the methods for preparing porous lightweight insulation materials mainly include foam method, burn-off addition method, sol-gel method, gas generation method, self-propagating high-temperature synthesis method, gel injection molding method and porous raw material method. Most of these preparation methods prepare open pores, which have limited application range, do not have a good thermal insulation effect in lightweight heat insulating materials, and have high cost, environmental pollution and difficult control during the preparation process. The foam method is usually to mechanically prepare the foam agent solution into a foam, then add the foam to the slurry composed of additives, mix and stir, cast ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K21/06
Inventor 赵雷杜星方伟陈欢李远兵李淑静
Owner WUHAN UNIV OF SCI & TECH
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