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Foaming agent and preparation method thereof

A technology of foaming agent and spherical particles, applied in the field of foaming agent and its preparation, can solve the problems of complex storage and use conditions, potential safety hazards and high cost, and achieve the effects of easy storage and transportation, low cost and good stability

Active Publication Date: 2019-03-08
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 and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] The foaming agent formula is (parts by weight): 12 parts of cross-linked carboxymethyl cellulose grafted acrylamide, 3 parts of methyl cellulose ether, 61 parts of high-grade territory, and 24 parts of calcium-based bentonite.

[0027] The preparation method is:

[0028] 1. Mix cross-linked carboxymethyl cellulose grafted acrylamide and methyl cellulose ether evenly, record it as material A, and set aside;

[0029] 2. Mix the high-grade soil and calcium-based bentonite evenly, record it as material B, and set aside;

[0030] 3. Mix material A with 100 times the mass of tap water evenly, and let it stand for 30 minutes to make the cross-linked carboxymethyl cellulose grafted with acrylamide and methyl cellulose ether fully absorb water and swell to obtain a paste mixture;

[0031] 4. Place the mixture after standing in step 3 into a ball forming machine to granulate to obtain spherical particles;

[0032] 5. Evenly scatter the B material in the formula into the ball fo...

Embodiment 2

[0035] The formula of the foaming agent is (parts by weight): 10 parts of cross-linked carboxymethyl cellulose grafted acrylamide, 5 parts of methyl cellulose ether, 55 parts of higher territory, and 30 parts of calcium-based bentonite. The preparation method is the same as in Example 1.

Embodiment 3

[0037] The formula of the foaming agent is (parts by weight): 15 parts of cross-linked carboxymethyl cellulose grafted acrylamide, 1 part of methyl cellulose ether, 74 parts of higher territory, and 10 parts of calcium-based bentonite. The preparation method is the same as in Example 1.

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Abstract

The invention discloses a foaming agent and a preparation method thereof. The foaming agent is composed of crosslinked carboxymethylcellulose-grafted acrylamide, methyl cellulose ether, metakaolin andcalcium bentonite. The foaming agent herein is simple to prepare, low in cost and good in stability, reacts only when in contact with an alkaline matter, is easy to store and transport, forms closedbubbles through volume shrinkage during use, produces no dangerous gas, has no need for special stirring devices to carry out quick stirring and for foam stabilizers, has a simple foaming process andis convenient to use. The foaming agent is easy to mix with concrete materials, bubbles are produced evenly and mildly, and the foamed material has uniform pore size, low connected pore rate and goodperformance.

Description

technical field [0001] The invention relates to a foaming agent and a preparation method thereof, in particular to a foaming agent 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 agent, also known as foaming agent and foaming agent, refers to a substance that can promote foam generation and form closed-cell or intercellular structure materials. Under certain conditions, the foaming agent can form closed cells inside 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 rapid mechanica...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B24/38C04B103/42
CPCC04B40/0039C04B2103/42C04B24/383C04B14/106C04B14/104
Inventor 芦令超李来波程新陈明旭闫振
Owner UNIV OF JINAN