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Foaming agent for foamed cement and preparation method thereof

A technology for foaming cement and foaming agent, which is applied in the fields of foaming agent and its preparation, foaming agent for foaming cement and its preparation, can solve the problems of high cost, hidden safety hazards, complicated storage and use conditions, etc. The effect of low cost, uniform pore size, easy storage and transportation

Active Publication Date: 2021-01-22
UNIV OF JINAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Both physical foaming agents and chemical foaming agents reported at present have certain shortcomings. The disadvantages of physical foaming agents are: special equipment is required for rapid mechanical stirring; foam stabilizers are required; the cost is relatively high
The disadvantages of chemical blowing agents are: aluminum powder generates explosive gas-hydrogen gas during the reaction process, causing certain safety hazards; hydrogen peroxide is a strong oxidizing dangerous chemical, and its storage and use conditions are relatively complicated; foam stabilizers are required

Method used

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  • Foaming agent for foamed cement and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] The formula of foaming agent for foamed cement is (parts by weight): 6 parts of redispersible latex powder, 3 parts of methyl cellulose ether, 16 parts of metakaolin, and 75 parts of calcium bentonite.

[0027] The preparation method is:

[0028] 1. Mix the redispersible latex powder and methyl cellulose ether evenly, record it as material A, for use;

[0029] 2. Mix the metakaolin and calcium bentonite evenly, record it as material B, for use;

[0030] 3. Mix material B and tap water three times its mass evenly, and let it stand for 45 minutes to fully absorb water and expand the metakaolin and calcium bentonite to obtain a paste-like mixture;

[0031] 4. The mixture left standing in step 3 is placed in a pelletizing machine for granulation to obtain spherical pellets;

[0032] 5. Sprinkle the formula A material evenly into the ball forming machine, so that the A material is evenly wrapped on the surface of the spherical particles, and then form a ball to obtain a sp...

Embodiment 2

[0035] The formula of the foaming agent for foamed cement is (parts by weight): 2 parts of redispersible latex powder, 5 parts of methyl cellulose ether, 10 parts of metakaolin, and 83 parts of calcium bentonite. The preparation method is the same as in Example 1.

Embodiment 3

[0037] The formula of foaming agent for foamed cement is (parts by weight): 10 parts of redispersible latex powder, 1 part of methyl cellulose ether, 24 parts of metakaolin, and 65 parts of calcium bentonite. The preparation method is the same as in Example 1.

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Abstract

The invention discloses a foaming agent for cement foaming and a preparation method of the foaming agent. The foaming agent is prepared from redispersible latex powder, methyl cellulose ether, metakaolin and calcium bentonite. The foaming agent is simple to prepare, low in cost and good in stability, can be only subjected to a reaction once meeting alkaline matter and is easy to store and transport, closed bubbles are formed by volume shrinkage of the foaming agent in a use process without production of any hazardous gas, a special stirring device for quick stirring or any foam stabilizer is not needed,, and a foaming process is simple and convenient to use. The foaming agent is easily and uniformly mixed with concrete materials, the produced bubbles are mild and uniform, and the foaming material is uniform in pore size, lower in connected pore rate and good in performance.

Description

technical field [0001] The invention relates to a foaming agent and a preparation method thereof, in particular to a foaming agent for foamed cement with simple preparation, good stability and simple foaming process and a preparation method thereof, belonging to the technical field of foaming agents. Background technique [0002] Foaming agents, also known as foaming agents and foaming agents, refer to substances that can promote foam generation and form closed-cell or linked-cell structural materials. Under certain conditions, the foaming agent can form closed cells in the fluid such as cement slurry, asphalt, gypsum slurry, etc., thereby improving its performance. According to the difference in the way of forming pores, the foaming agent includes physical foaming agent and chemical foaming agent. The physical foaming agent is mainly a protein with an amphiphilic structure, which shows strong interfacial activity in the cement slurry. When the protein sol is subjected to r...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B24/38C04B103/42
CPCC04B40/0046C04B2103/42C04B2103/0057C04B24/383C04B14/106C04B14/104
Inventor 芦令超李来波程新陈明旭闫振
Owner UNIV OF JINAN