CN108840594A - Compound high stability Foam lightweight soil foaming agent and preparation method thereof - Google Patents
Compound high stability Foam lightweight soil foaming agent and preparation method thereof Download PDFInfo
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- CN108840594A CN108840594A CN201810826204.9A CN201810826204A CN108840594A CN 108840594 A CN108840594 A CN 108840594A CN 201810826204 A CN201810826204 A CN 201810826204A CN 108840594 A CN108840594 A CN 108840594A
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- parts
- foaming agent
- foam
- high stability
- lightweight soil
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Classifications
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/0028—Aspects relating to the mixing step of the mortar preparation
- C04B40/0039—Premixtures of ingredients
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
- C04B2103/42—Pore formers
Abstract
The invention discloses a kind of compound high stability Foam lightweight soil foaming agents and preparation method, the foaming agent to belong to light building material additive.Foaming agent disclosed in this invention is to be modified surface reactive material and animal protein, pass through introducing different type foam stabilizer and functional additive simultaneously promoting coefficient of foaming, surface tension of liquid is reduced, the stability of foam is enhanced, extends foaming agent function and suitable environment.The compound foaming agent kinds of ingredients mass ratio is as follows：Cow hoof angle animal protein, 5-15 parts；Foam stabilizer, 1-3.5 parts；Anionic surfactant, 8-12 parts；Thickener, 1-4.5 parts；Low-temperature early strength agent, 0-2 parts；Antifreezing agent, 0-2 parts；Water, 90-100 parts.The foaming agent can ensure the stability of foam compared with high-foaming multiple, and raw material materials are convenient, and preparation is simple, preparation method economy with higher and operability, can be widely applied in low temperature, freeze proof bubble lightweight soil and foam concrete.
Description
Technical field
The present invention relates to chemical building material field, specifically a kind of compound high stability Foam lightweight soil foaming agent and
Preparation method.
Background technique
With national green building strategy carry forward vigorously, foam soil with lightweight, good fluidity, low energy consumption the features such as it is wide
It is general to be applied in municipal administration, road, bridge tunnel, water conservancy, coal mine and architectural engineering, since internal structure is porous, make it have good
Heat preservation, sound absorption, anti-freezing property.Foaming agent mainly has physics and chemical blowing by foam pattern, and physical blowing is preparing foam soil
During, the foaming quality of foaming agent determines the performance and application prospect of slurry as prepared by it.
Current common foaming agent mainly has rosin tree lipid, surfactant-based, protide and synthesis class foaming agent.Rosin
Resinae foaming agent belongs to first generation foaming agent, though having higher economy, it is poor to prepare foam stability；Surface-active
Agent class foaming agent has compared with high-foaming multiple, and since surface tension of liquid is excessively high, foam sedimentation easily causes away from larger with bleeding quantity
Slurry collapses mould；Traditional protein class blowing agent stability is higher and preparation is simple, but foam density is larger, it is larger to be affected by temperature,
Coefficient of foaming is lower, its lower economic benefit.《Foam concrete》In JG/T266-2011 with coefficient of foaming, 1 h sedimentation away from and 1
H bleeding quantity more fully describes foam blistering, foam stabilizing ability, benefit as the three norms for measuring foaming properties in foaming agent
Convergent improvement is carried out to foaming agent with blistering and foam stabilizing substance, is to improve the limitation effective technology that single substance is main foaming agent
Approaches and methods.As described in Chinese CN105481283A：By compounding surface reactive material and protide foaming agent, mention
The stability of foam is risen, and uniform with the pore structure of the lightweight foam soil of its preparation, stable, improves and promoted blistering and foam stability
Can prepare high-quality foaming agent.
Summary of the invention
The present invention in order to solve problems in the prior art, provides a kind of compound high stability Foam lightweight soil foaming agent
And preparation method thereof, the stability and uniformity of foam, produced foam are also ensured that while meeting compared with high-foaming multiple
Coefficient of foaming be greater than 40 times, 1h sedimentation away from be less than 5mm, 1h bleeding quantity be less than 10ml.
Compound high stability Foam lightweight soil foaming agent provided by the invention is by cow hoof angle animal protein, anionic surface
Activating agent, foam stabilizer, thickener, low-temperature early strength agent, antifreezing agent and water composition, each component mass fraction are as follows：
Component one：Animal protein, 5-15 parts；
Component two：Anionic surfactant, 3-13 parts；
Component three：Foam stabilizer, 1-3.5 parts；
Component four：Thickener, 2-7.5 parts；
Component five；Low-temperature early strength agent, 0-2 parts；
Component six：Antifreezing agent, 0-2 parts；
Component seven：Water, 80-110 parts.
The animal protein is product of the cow hoof angle in 5-12% calcium hydroxide hydrolyzed under basic conditions 10-18h.
The surface reactive material is that aliphatic acid polyethenoxy ether sodium sulphate and α-alkene are introduced in dodecyl benzene sulfonic acid
Base sodium sulfonate, wherein dodecyl benzene sulfonic acid be 1-3 parts, 0-3 parts of aliphatic acid polyethenoxy ether sodium sulphate, α-sodium olefin sulfonate
0-2 parts.
The surface reactive material is that aliphatic acid polyethenoxy ether sodium sulphate and α-alkene are introduced in lauryl sodium sulfate
Base sodium sulfonate, wherein 2-5 parts of lauryl sodium sulfate, 0-3 parts of aliphatic acid polyethenoxy ether sodium sulphate, α-sodium olefin sulfonate 0-2
Part.
The foam stabilizer be lauryl alcohol, hexadecanol any one or more mixing 1-2 parts dissolve in 2-9 parts of n-butanols,
Any one in triethanolamine, calcium stearate and silicone resin polyethers lotion or a variety of 0-1.5 parts of mixing are mixed again.
The thickener is xanthan gum 1-3 parts, 0.5-2 parts of pectin, mixes carboxymethyl cellulose in 0.5-1 parts of carragheen
Any one in sodium, Tea Saponin or a variety of 0-1.5 parts of uniformly mixing.
The compound high stability Foam lightweight soil foaming agent, it is characterised in that：The low-temperature early strength agent is three
0-1 parts of isopropanolamine, 0-1 parts of calcium thiocyanate mixing.
The compound high stability Foam lightweight soil foaming agent, it is characterised in that：The antifreezing agent is straight chain alkane
0-1 parts of base sulfonate, 0-1 parts of secondary alkyl sulfonate mixing.
The present invention also provides a kind of preparation methods of compound high stability Foam lightweight soil foaming agent, including following step
Suddenly：
1）30-40 parts of water are taken, 5-15 parts of animal proteins and 3-13 parts of surface reactive materials are sequentially added, in 25-40oIt is even under C
Speed stirring is until mixed liquor clear；
2）1-3.5 portions of foam stabilizers are added in its 2-9 parts of butanol solution and in 25-40oUniform stirring is clear to mixed liquor under C
It is clear bright；
3）Take 50-70 parts of water, be added 2-4.5 part thickeners, 0-2 parts of low-temperature early strength agents, 0-2 parts of antifreezing agents, after immersion 1-5h
25-40oIt is at the uniform velocity stirred under C, obtains the colloid mixed liquor of homogeneous transparent；
4）By step 1）To step 3）The solution of preparation is mixed, and the compound height can uniformly be obtained by being stirred at room temperature
Stability foaming agent.
The beneficial effects of the invention are that：
（1）Compound high stability foaming agent provided by the present invention also ensures that foam while meeting compared with high-foaming multiple
Stability and uniformity, the coefficient of foaming of produced foam is greater than 40 times, and 1h sedimentation is less than away from 5mm, 1h bleeding quantity is less than
10ml。
（2）Compound high stability foaming agent provided by the present invention takes full advantage of surface reactive material hydrophilic group and parent
Repulsion between oil base has filled up the insufficient defect of protein type foaming agent foamability with it；Improve foam by thickening substance
The thickness and elasticity of liquid wall, can bear the pressure of slurry, and holding does not rupture, and promote ultralow density foam soil or concrete
Mechanics and endurance quality are improved foam group by incorporation low-temperature early strength agent and antifreezing agent and foamed and improve at low temperature its property
Energy.
（3）Compound high stability foaming agent materials provided by the present invention are easy, preparation is simple, extracts without special distillation
Take process and equipment, economy and operability with higher.
Detailed description of the invention
Fig. 1 is influence schematic diagram of the anion surfactant to animal protein foaming agent performance.
Fig. 2 is influence schematic diagram of the foam stabilizer to animal protein foaming agent performance.
Specific embodiment
Present invention will be further explained below with reference to the attached drawings and specific embodiments.
Embodiment 1：A kind of compound high stability foaming agent, each composition mass ratio weight are as follows：
Component one：5 parts of animal protein；
Component two：10 parts of surface reactive material（3 parts of neopelex, 5 parts of lauryl sodium sulfate, fatty acid polyoxy
2 parts of ethylene ether sodium sulfate）；
Component three：2.5 parts of foam stabilizer（1 part of lauryl alcohol, 1.5 parts of triethanolamine）；
Component four：3 parts of thickener（1 part of xanthan gum, 0.5 part of carragheen, 1 part of sodium carboxymethylcellulose, 0.5 part of Tea Saponin）；
Component five：95 parts of water.
The specific preparation method of the compound high stability Foam lightweight soil foaming agent is as follows：
（1）40 parts of water are taken, 5 parts of animal proteins and 10 parts of surface reactive materials are sequentially added, 30oAt the uniform velocity stirring extremely mixes under C
Liquid clear.
（2）9 parts of butanol solutions are added in 2.5 portions of foam stabilizers, 30oIt at the uniform velocity stirs under C to mixed liquor clear.
（3）55 parts of water are taken, 3 parts of thickeners are added, 1-5h are impregnated, 30oIt is at the uniform velocity stirred under C, obtains the glue of homogeneous transparent
Matter mixed liquor.
（4）It will（1）,（2）With（3）The solution of preparation is merged with ratio in certain sequence, is stirred at room temperature uniformly,
The compound high stability foaming agent can be obtained.
The foam prepared using the foaming agent, coefficient of foaming 45,1h settle away from 3 mm, 0 ml of 1h bleeding quantity, as a result compared with
The performance of conventional foaming agents is obviously improved.
Embodiment 2：A kind of compound high stability foaming agent, each composition mass ratio weight are as follows：
Component one：10 parts of animal protein；
Component two：13 parts of surface reactive material（15 parts of sodium hisbenzene sulfonates；5 parts of neopelex, α-sodium olefin sulfonate 3
Part）；
Component three：3 parts of foam stabilizer（1.5 parts of hexadecanol, 1 part of calcium stearate, 0.5 part of triethanolamine）；
Component four：2 parts of thickener（1 part of xanthan gum, 0.5 part of carboxymethyl cellulose, 0.5 part of pectin）；
Component five：1 part of low-temperature early strength agent（0.5 part of triisopropanolamine, 0.5 part of calcium thiocyanate）；
Component six：1 part of antifreezing agent（0.5 part of straight chain alkyl sulfonates, 0.5 part of secondary alkyl sulfonate）；
Component seven：80 parts of water.
The specific preparation method of the compound high stability foam concrete foamer is as follows：
（1）35 parts of water are taken, 10 parts of animal proteins and 13 parts of surface reactive materials are sequentially added, 25oAt the uniform velocity stirring extremely mixes under C
Liquid clear.
（2）Its 8 parts of butanol solutions are added in 3 portions of foam stabilizers, 25oIt at the uniform velocity stirs under C to mixed liquor clear.
（3）45 parts of water are taken, 2 parts of thickeners, 1 part of low-temperature early strength agent, 1 part of antifreezing agent is added, 1-5h are impregnated, 25oIt is even under C
Speed stirring is to obtaining the colloid mixed liquor of homogeneous transparent.
（4）It will（1）,（2）With（3）The solution of preparation is merged with ratio in certain sequence, is stirred at room temperature uniformly,
The compound high stability foaming agent can be obtained.
The foam prepared using the foaming agent, coefficient of foaming 47,1h are settled away from 5mm, 1h bleeding quantity 7.4ml.
Embodiment 3：A kind of compound high stability foaming agent, each composition mass ratio weight are as follows：
Component one：15 parts of animal protein；
Component two：5 parts of surface reactive material（2 parts of neopelex, 2 parts of α-sodium olefin sulfonate, aliphatic acid polyethenoxy
1 part of ether sodium sulfate）；
Component three：Foam stabilizer 1（0.5 part of lauryl alcohol, 0.5 part of hexadecanol）；
Component four：7.5 parts of thickener（3 parts of xanthan gum, 2 parts of carragheen, 1 part of pectin, 1 part of Tea Saponin, sodium carboxymethylcellulose
0.5）；
Component five：2 parts of low-temperature early strength agent（1 part of triisopropanolamine, 1 part of calcium thiocyanate）；
Component six：2 parts of low-temperature early strength agent（1 part of straight chain alkyl sulfonates, 1 part of secondary alkyl sulfonate）；
Component seven：80 parts of water.
The specific preparation method of the compound high stability foam concrete foamer is as follows：
（1）50 parts of water are taken, 15 parts of animal proteins and 5 parts of lauryl sodium sulfate are sequentially added, 40oIt at the uniform velocity stirs under C to mixed
Close liquid clear.
（2）Its 8 parts of butanol solutions are added in 1 portion of foam stabilizer, 40oIt at the uniform velocity stirs under C to mixed liquor clear.
（3）60 parts of water are taken, 7.5 parts of thickeners, 2 parts of low-temperature early strength agents, 2 parts of antifreezing agents are added, 2-3h are impregnated, 40oUnder C
Stirring, obtains the colloid mixed liquor of homogeneous transparent.
（4）It will（1）,（2）With（3）The solution of preparation is merged with ratio in certain sequence, is stirred at room temperature uniformly,
The compound high stability foaming agent can be obtained.
The foam prepared using the foaming agent, coefficient of foaming 48.5,1h are settled away from 5.9 mm, 11.9 ml of 1h bleeding quantity.
Comparative example 1,2,3 can obtain, the number of anion surfactant and foam stabilizer to the coefficient of foaming of foaming agent,
Sedimentation is away from having significant impact with bleeding quantity, and the anion surfactant and foam stabilizer that many experiments obtain are to foaming agent
Data induction can be influenced at as depicted in figs. 1 and 2 after chart.
Embodiment 4：Kinds of ingredients is identical as preparation method and embodiment 1, and preparation temperature is controlled 10oC utilizes the hair
The foam that infusion is prepared, coefficient of foaming 39.2,1h are settled away from 9.2 mm, 1h bleeding quantity 22.4ml.
Embodiment 5：Kinds of ingredients is identical as preparation method and embodiment 1, and preparation temperature is controlled 50oC utilizes the hair
The foam that infusion is prepared, coefficient of foaming 32.8,1h are settled away from 10.1 mm, 31.4 ml of 1h bleeding quantity.
It can be obtained by comparative example 4, comparative example 5, temperature 25-40oWhen C, the performance of such foaming agent is the most steady
It is fixed, it is too high or too low for temperature foaming agent performance to be had an impact.
There are many concrete application approach of the present invention, the above is only a preferred embodiment of the present invention, it is noted that for
For those skilled in the art, without departing from the principles of the present invention, several improvement can be also carried out, these change
Into also should be regarded as protection scope of the present invention.
Claims (9)
1. a kind of compound high stability Foam lightweight soil foaming agent, it is characterised in that：By cow hoof angle animal protein, anion table
Face activating agent, foam stabilizer, thickener and water composition, each component mass fraction are as follows：
Component one：Animal protein, 5-15 parts；
Component two：Anionic surfactant, 3-13 parts；
Component three：Foam stabilizer, 1-3.5 parts；
Component four：Thickener, 2-7.5 parts；
Component five；Low-temperature early strength agent, 0-2 parts；
Component six：Antifreezing agent, 0-2 parts；
Component seven：Water, 80-110 parts.
2. compound high stability Foam lightweight soil foaming agent according to claim 1, it is characterised in that：The animal
Albumen is product of the cow hoof angle in 5-12% calcium hydroxide hydrolyzed under basic conditions 10-18h.
3. compound high stability Foam lightweight soil foaming agent according to claim 1, it is characterised in that：The surface
Active material is that aliphatic acid polyethenoxy ether sodium sulphate and α-sodium olefin sulfonate are introduced in dodecyl benzene sulfonic acid, wherein 12
Alkyl benzene sulphonate be 1-3 parts, 0-3 parts of aliphatic acid polyethenoxy ether sodium sulphate, α -0-2 parts of sodium olefin sulfonate.
4. compound high stability Foam lightweight soil foaming agent according to claim 1, it is characterised in that：The surface
Active material is that aliphatic acid polyethenoxy ether sodium sulphate and α-sodium olefin sulfonate are introduced in lauryl sodium sulfate, wherein 12
2-5 parts of sodium alkyl sulfate, 0-3 parts of aliphatic acid polyethenoxy ether sodium sulphate, α -0-2 parts of sodium olefin sulfonate.
5. compound high stability Foam lightweight soil foaming agent according to claim 1, it is characterised in that：The foam stabilizing
Agent is that lauryl alcohol, hexadecanol any one or more 1-2 parts of mixing are dissolved in 2-9 parts of n-butanols, then mixes triethanolamine, tristearin
Any one in sour calcium and silicone resin polyethers lotion or a variety of 0-1.5 parts of mixing.
6. compound high stability Foam lightweight soil foaming agent according to claim 1, it is characterised in that：The thickening
Agent is xanthan gum 1-3 part, any in 0.5-2 parts of pectin, incorporation sodium carboxymethylcellulose in 0.5-1 parts of carragheen, Tea Saponin
One or more kinds of 0-1.5 parts uniformly mixing.
7. compound high stability Foam lightweight soil foaming agent according to claim 1, it is characterised in that：The low temperature
Early strength agent is triisopropanolamine 0-1 parts, 0-1 parts of calcium thiocyanate and mixes.
8. compound high stability Foam lightweight soil foaming agent according to claim 1, it is characterised in that：Described is antifreeze
Agent is straight chain alkyl sulfonates 0-1 parts, 0-1 parts of secondary alkyl sulfonate and mixes.
9. a kind of preparation method of compound high stability Foam lightweight soil foaming agent, it is characterised in that include the following steps：
1）30-40 parts of water are taken, 5-15 parts of animal proteins and 3-13 parts of surface reactive materials are sequentially added, in 25-40oUnder C at the uniform velocity
Stirring is until mixed liquor clear；
2）1-3.5 portions of foam stabilizers are added in its 2-9 parts of butanol solution and in 25-40oUniform stirring is clear to mixed liquor under C
It is clear bright；
3）Take 50-70 parts of water, be added 2-4.5 part thickeners, 0-2 parts of low-temperature early strength agents, 0-2 parts of antifreezing agents, after immersion 1-5h
25-40oIt is at the uniform velocity stirred under C, obtains the colloid mixed liquor of homogeneous transparent；
4）By step 1）To step 3）The solution of preparation is mixed, and the compound height can uniformly be obtained by being stirred at room temperature
Stability foaming agent.
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| CN201810826204.9A CN108840594A (en) | 2018-07-25 | 2018-07-25 | Compound high stability Foam lightweight soil foaming agent and preparation method thereof |
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|---|---|---|---|
| CN201810826204.9A CN108840594A (en) | 2018-07-25 | 2018-07-25 | Compound high stability Foam lightweight soil foaming agent and preparation method thereof |
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Family
ID=64195757
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109467333A (en) * | 2018-12-10 | 2019-03-15 | 中国五冶集团有限公司 | A kind of light-weight foamed concrete foaming agent |
| CN109574542A (en) * | 2018-12-18 | 2019-04-05 | 广州市三骏建材科技有限公司 | A kind of micro- foam air entraining agent of ready-mixed concrete and its preparation method and application |
| CN109626899A (en) * | 2018-12-20 | 2019-04-16 | 江苏兆通工程技术有限公司 | A kind of foam mud mix light-textured soil and preparation method thereof |
| CN112521123A (en) * | 2020-12-26 | 2021-03-19 | 南京航空航天大学 | Preparation method of basic magnesium sulfate cement foam concrete thermal insulation material |
| CN112551933A (en) * | 2020-12-29 | 2021-03-26 | 广东盛瑞科技股份有限公司 | Low-temperature foaming agent for foamed light soil |
| CN112592100A (en) * | 2021-01-29 | 2021-04-02 | 河南华泰新材科技股份有限公司 | Foaming agent for admixture foamed light soil and preparation method thereof |
| CN112979252A (en) * | 2019-12-13 | 2021-06-18 | 湖北工业大学 | Self-insulation system foam concrete and preparation method thereof |
| CN115286282A (en) * | 2022-06-06 | 2022-11-04 | 福清绿宝源新型建材有限公司 | Compound concrete foaming agent based on animal protein modification |
| CN115304398A (en) * | 2022-08-16 | 2022-11-08 | 杭州余杭恒力混凝土有限公司 | Carbon-fixing heat-insulating concrete and preparation method thereof |
| CN115321877A (en) * | 2022-08-30 | 2022-11-11 | 西安建筑科技大学 | Composite foaming agent for foam concrete and preparation method and application thereof |
| CN115403298A (en) * | 2022-09-28 | 2022-11-29 | 北京工业大学 | Oleophobic base polymer composite foaming agent and preparation method thereof |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109467333A (en) * | 2018-12-10 | 2019-03-15 | 中国五冶集团有限公司 | A kind of light-weight foamed concrete foaming agent |
| CN109574542B (en) * | 2018-12-18 | 2022-03-29 | 广州市三骏建材科技有限公司 | Premixed concrete micro-foam air entraining agent and preparation method and application thereof |
| CN109574542A (en) * | 2018-12-18 | 2019-04-05 | 广州市三骏建材科技有限公司 | A kind of micro- foam air entraining agent of ready-mixed concrete and its preparation method and application |
| CN109626899A (en) * | 2018-12-20 | 2019-04-16 | 江苏兆通工程技术有限公司 | A kind of foam mud mix light-textured soil and preparation method thereof |
| CN112979252B (en) * | 2019-12-13 | 2022-06-10 | 湖北工业大学 | Self-insulation system foam concrete and preparation method thereof |
| CN112979252A (en) * | 2019-12-13 | 2021-06-18 | 湖北工业大学 | Self-insulation system foam concrete and preparation method thereof |
| CN112521123B (en) * | 2020-12-26 | 2022-04-01 | 南京航空航天大学 | Preparation method of basic magnesium sulfate cement foam concrete thermal insulation material |
| CN112521123A (en) * | 2020-12-26 | 2021-03-19 | 南京航空航天大学 | Preparation method of basic magnesium sulfate cement foam concrete thermal insulation material |
| CN112551933A (en) * | 2020-12-29 | 2021-03-26 | 广东盛瑞科技股份有限公司 | Low-temperature foaming agent for foamed light soil |
| CN112592100A (en) * | 2021-01-29 | 2021-04-02 | 河南华泰新材科技股份有限公司 | Foaming agent for admixture foamed light soil and preparation method thereof |
| CN115286282A (en) * | 2022-06-06 | 2022-11-04 | 福清绿宝源新型建材有限公司 | Compound concrete foaming agent based on animal protein modification |
| CN115304398A (en) * | 2022-08-16 | 2022-11-08 | 杭州余杭恒力混凝土有限公司 | Carbon-fixing heat-insulating concrete and preparation method thereof |
| CN115321877A (en) * | 2022-08-30 | 2022-11-11 | 西安建筑科技大学 | Composite foaming agent for foam concrete and preparation method and application thereof |
| CN115403298A (en) * | 2022-09-28 | 2022-11-29 | 北京工业大学 | Oleophobic base polymer composite foaming agent and preparation method thereof |
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