CN106433679B - Acid resistance shield foaming agent - Google Patents
Acid resistance shield foaming agent Download PDFInfo
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- CN106433679B CN106433679B CN201610882451.1A CN201610882451A CN106433679B CN 106433679 B CN106433679 B CN 106433679B CN 201610882451 A CN201610882451 A CN 201610882451A CN 106433679 B CN106433679 B CN 106433679B
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- foaming agent
- foam
- acid
- earth pressure
- pressure balanced
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K17/00—Soil-conditioning materials or soil-stabilising materials
- C09K17/40—Soil-conditioning materials or soil-stabilising materials containing mixtures of inorganic and organic compounds
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K2103/00—Civil engineering use
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- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Soil Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The invention discloses a kind of earth pressure balanced shield foaming agents.The foaming agent is count by weight percentage, contain the dilute ether of poly alkyl alcohol epoxy second (AEO-9) 2.5~10.0%, alkyl-glucoside (APG) 2.0~8.0%, empgen BB 2~6.5%, polyethylene glycol (PEG4000) 1.0~3.0%, ammonium sulfate 2~4.5%, water 32.0~90.5%.Earth pressure balanced shield foaming agent of the invention is realized in acid condition, can also accomplish that high magnification foams, and the foam of generation is fine and smooth, and the stable time is long, and product can meet the requirement that acid dregs is improved in balancing earth-pressure shielding machine tunneling process well.
Description
Technical field
The invention belongs to field of material technology, and the present invention relates to a kind of shield machine with soil pressure balance for construction in acid condition to use
Foaming agent.
Technical background
China's Metro Construction is grown rapidly at present, and constructing metro tunnel often uses Earth Pressure Balance Shield Technology, this
The key of one technology is that the soil body is wanted to keep Plastic Flow state, is usually that certain foaming agent is injected into shield machine in construction
The soil body is improved.Since soil is a complicated system, wherein there is various chemistry and biochemical reaction, thus
Soil is set to show different acid-base property.China's soil pH is mostly in 4.5~8.5 ranges, and pH value is incremented by from south to north, the Changjiang river
Soil on the south (33 ° of north latitude) is mostly acid and highly acid, and such as the widely distributed red soil in south China, southwest, yellow earth, pH value is big
Mostly between 4.5~5.5；The red soil of Central China East China, pH value is between 5.5~6.5；And it can make in construction neutral and acidic soil
Foam becomes unstable, and then the soil body is made to lose Plastic Flow state, and shield machine is caused " occlusion " occur, and silt " is gushed ", soil
The technical problems such as body " molding ".
Summary of the invention
The object of the present invention is to provide a kind of dedicated foaming agent of balancing earth-pressure shielding machine, product can meet soil pressure well
The requirement of acid dregs is improved in balance shield machine tunneling process.Generated foam is also able to maintain good in acid condition
Frothing percentage and half-life period.
Earth pressure balanced shield of the invention with foaming agent its count by weight percentage, be made of the following components:
The dilute ether of poly alkyl alcohol epoxy second (AEO-9) 2.5~10.0%,
Alkyl-glucoside (APG) 2.0~8.0%,
Empgen BB 2~6. 5%,
Polyethylene glycol (PEG4000) 1.0~3.0%,
Ammonium sulfate 2~4.5%,
Water 32.0~90.5%.
Each component is mixed evenly at normal temperature, appearance is made is colourless or pale yellow transparent water-soluble liquid.
In above-mentioned earth pressure balanced shield foaming agent:
The dilute ether of poly alkyl alcohol epoxy second (AEO-9) is natural fatty alcohol and ethylene oxide adduct.It is a kind of nonionic table
Face activating agent, uniform frothing capacity can be with various anion, cation, nonionic surfactant and other auxiliary agent groups
It closes and uses, to obtain synergistic effect and premium quality product, the good biological degradability of is environmental-friendly, the low stimulation to skin
Property, it is all more stable to acid, aqueous slkali and hard water.
Alkyl-glucoside (APG) is a kind of more comprehensive nonionic surfactant of performance, and surface tension is low, without turbid
Point, foaming abundancy are fine and smooth, compatibility is strong, nontoxic, harmless, non-stimulated to skin, and biodegrade is thorough rapidly, can be with any type
Surfactant compound, synergistic effect are obvious.With stronger broad spectrum antibiotic activity, and resistance to highly basic, resistance to strong acid, resistance to hard water,
Salt-resistance is strong.
Empgen BB is a kind of zwitterionic surfactant, and foam exquisiteness is abundant, can be with various types surface
Active ingredient, this product all have excellent stability under acid and alkaline condition.
Polyethylene glycol (PEG4000) has significant thickening, foam stability energy, can extend under the conditions of acid stronger
The stabilization time of foam；
Ammonium sulfate has stronger buffer capacity, while matching with other surfaces activating agent, significantly improves the viscosity of system,
Guarantee that foam is also with good stability in acid condition.
Compared with prior art, foaming agent of the present invention has the following characteristics that
Earth pressure balanced shield of the present invention is high with foamable composition rate, and foaming abundancy is fine and smooth, is evenly distributed, generated gas
Abscess gap is small, also has excellent lubricity and stability in acid condition, and indices can meet soil pressure well
The requirement that dregs is improved during balanced shield, can reduce the water penetration of acid dregs, while can reduce rubbing for the soil body
Wiping property, reduces the abrasion of cutter, adjusts Plastic flow of soil mobility in native storehouse, in earth pressure balanced shield, EPBS method tunneling process, after cutting
Acid dregs there is good plastic fluidity, the flat street formula shield foaming agent indices of soil pressure of the present invention can meet shield
Structure construction requirement, reaches advanced world standards, and can satisfy demand of China's shield machine with soil pressure balance for construction to soil improvement.
Specific embodiment
For the various effective components composition that the present invention will be described in detail, the present invention is made combined with specific embodiments below further
Detailed description.
Embodiment 1
Prepare earth pressure balanced shield foaming agent 100g, each constituent content are as follows:
The dilute ether of poly alkyl alcohol epoxy second (AEO-9) 7g,
Alkyl-glucoside (APG) 8g,
Empgen BB 3g,
Polyethylene glycol (PEG4000) 1.5g,
Ammonium sulfate 3.5g,
Water 77g.
Each component is mixed evenly to the water-soluble liquid for being made that appearance is pale yellow transparent at normal temperature.
Embodiment 2
Prepare earth pressure balanced shield foaming agent 100g, each constituent content are as follows:
The dilute ether of poly alkyl alcohol epoxy second (AEO-9) 8g,
Alkyl-glucoside (APG) 7g,
Empgen BB 4g,
Polyethylene glycol (PEG4000) 2g,
Ammonium sulfate 2g,
Water 77g.
Each component is mixed evenly to the water-soluble liquid for being made that appearance is pale yellow transparent at normal temperature.
Embodiment 3
Prepare earth pressure balanced shield foaming agent 100g, each constituent content are as follows:
The dilute ether of poly alkyl alcohol epoxy second (AEO-9) 6g,
Alkyl-glucoside (APG) 7g,
Empgen BB 4g,
Polyethylene glycol (PEG4000) 2.5g,
Ammonium sulfate 3.5g,
Water 77g.
Each component is mixed evenly to the water-soluble liquid for being made that appearance is pale yellow transparent at normal temperature.
Embodiment 4
Prepare earth pressure balanced shield foaming agent 100g, each constituent content are as follows:
The dilute ether of poly alkyl alcohol epoxy second (AEO-9) 8g,
Alkyl-glucoside (APG) 4g,
Empgen BB 6.5g,
Polyethylene glycol (PEG4000) 2g,
Ammonium sulfate 2.5g,
Water 77g.
Each component is mixed evenly at normal temperature, appearance is made is colorless and transparent water-soluble liquid.
Embodiment 5
The testing performance index of earth pressure balanced shield foaming agent
Configured foaming agent is divided into 5 groups, every group three parts, the 1st group respectively corresponds the embodiment of the present invention 1 to the 4th group and arrive
Embodiment 4, the 5th group is comparative example (domestic foaming agent is purchased from Beijing Shang Wei Ke Lin science and trade Co., Ltd), and distinguishes label.
The hydrochloric acid weak solution that each group sample is 4.5 with pH is adjusted and foamed respectively with indoor foam device foaming by 4% dilution proportion
Device obtains required foam, and this state is made to keep stablizing.
1, frothing percentage is tested
Frothing percentage refers to the ratio of the foam volume that the foam agent solution of certain volume is issued and foam agent solution, i.e., often
The volume for the foam that volume foam agent solution is issued.
After foam device keeps stablizing foamed state, the initial volume of foam agent solution is recorded, with measuring cup with a scale
Receive the foam issued, the termination volume of record foam agent solution after measuring cup is filled with foam.Experimental result data is arranged, is made even
Mean value.
Experimental result is as shown in Table 1:
| Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Comparative example | |
| Foam volume Vm(mL) | 2000 | 2000 | 2000 | 2000 | 2000 |
| Foaming agent liquor capacity Vl(mL) | 157 | 162 | 173 | 175 | 206 |
| Frothing percentage | 12.7 | 12.3 | 11.5 | 11.4 | 9.71 |
One foamable composition rate of table compares
As can be seen from Table I, the foamable composition rate of the embodiment of the present invention 1 ~ 4 is above domestic foaming agent, illustrates
Under acid condition, foamable composition performance of the invention is better than contrast sample.
2, stability experiment
The stability of foam can be measured with the half-life period of foam, and half foam life period refers to: by the liquid being discharged in foam
Time needed for the half of whole liquid volume when body volume is foam non-drain.
After measured, the half-life period of foam is as shown in Table 2
| Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Comparative example | |
| Half-life period | 9 points 36 seconds | 9 points 43 seconds | 9 points 05 second | 9 points 22 seconds | 3 points 10 seconds |
Two foaming agent half-life period of table compares
As can be seen from Table II, the half-life period that the foaming agent of the embodiment of the present invention 1 ~ 4 generates foam is longer than domestic bubble
Foam agent, illustrate in acid condition, foaming agent of the invention generates foam stability and is better than contrast sample.
Protection scope of the present invention be not limited to more than embodiment, anyone skilled in the art is in this hair
After bright disclosure, change of component or replacement can be carried out easily, these should be covered by the scope of protection of the present invention.So
Protection scope of the present invention should be subject to the protection atmosphere of claims.
Claims (1)
1. a kind of acid resistance earth pressure balanced shield foaming agent, which is characterized in that be made of the following components by weight percentage:
Dilute ether AEO-9:2.5~10.0% of poly alkyl alcohol epoxy second, alkyl-glucoside APG:2.0~8.0%, dodecyl beet
Alkali: 2.0~6.5%, polyethylene glycol PEG4000:1.0~3.0%, ammonium sulfate: 2.0~4.5%, water: 32.0~90.5%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610882451.1A CN106433679B (en) | 2016-10-10 | 2016-10-10 | Acid resistance shield foaming agent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610882451.1A CN106433679B (en) | 2016-10-10 | 2016-10-10 | Acid resistance shield foaming agent |
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| Publication Number | Publication Date |
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| CN106433679A CN106433679A (en) | 2017-02-22 |
| CN106433679B true CN106433679B (en) | 2019-07-09 |
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| CN201610882451.1A Active CN106433679B (en) | 2016-10-10 | 2016-10-10 | Acid resistance shield foaming agent |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108070383A (en) * | 2017-12-22 | 2018-05-25 | 新乡市恒星科技有限责任公司 | A kind of foam stabilizing persistent form Soil pressure balance shield foam agent and preparation method thereof |
| CN108865159A (en) * | 2018-06-22 | 2018-11-23 | 湖北工程学院 | Acid resistance shield foaming agent and its preparation method and application |
| IT201800007438A1 (en) * | 2018-07-23 | 2020-01-23 | LOW ECOTOXICOLOGICAL IMPACT FOAMING ADDITIVE FOR THE CONDITIONING OF THE SOIL IN THE PRESENCE OF MECHANIZED EXCAVATION | |
| CN111154497A (en) * | 2020-02-19 | 2020-05-15 | 济南重工股份有限公司 | Production device and method of shield tunneling machine foaming agent |
| CN113337294A (en) * | 2021-06-24 | 2021-09-03 | 中铁六局集团有限公司 | Foaming agent for calcium and magnesium ion resistant earth pressure balance shield and preparation method thereof |
| CN114015448A (en) * | 2021-11-23 | 2022-02-08 | 福州大学 | Foaming agent for improving muck of shield of cohesive soil layer, preparation method and use method |
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| CN103864334A (en) * | 2014-02-12 | 2014-06-18 | 东莞市明洁隧道建设材料有限公司 | Environment-friendly foaming agent for earth pressure balance shield tunneling machine |
| CN103964726A (en) * | 2013-01-24 | 2014-08-06 | 北京交通大学 | Foaming agent for earth pressure balance shield |
| CN104946263A (en) * | 2015-04-02 | 2015-09-30 | 厦门诺恩斯科技有限公司 | Earth pressure balance shield foaming agent |
| CN105198269A (en) * | 2015-09-01 | 2015-12-30 | 北京铁五院工程机械有限公司 | Foaming agent for low temperature-resistant soil pressure balance shield, and preparation method and application of foaming agent |
| CN105295933A (en) * | 2015-11-24 | 2016-02-03 | 上海三瑞高分子材料股份有限公司 | Soil modifier for earth pressure balance shield |
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2016
- 2016-10-10 CN CN201610882451.1A patent/CN106433679B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103964726A (en) * | 2013-01-24 | 2014-08-06 | 北京交通大学 | Foaming agent for earth pressure balance shield |
| CN103864334A (en) * | 2014-02-12 | 2014-06-18 | 东莞市明洁隧道建设材料有限公司 | Environment-friendly foaming agent for earth pressure balance shield tunneling machine |
| CN104946263A (en) * | 2015-04-02 | 2015-09-30 | 厦门诺恩斯科技有限公司 | Earth pressure balance shield foaming agent |
| CN105198269A (en) * | 2015-09-01 | 2015-12-30 | 北京铁五院工程机械有限公司 | Foaming agent for low temperature-resistant soil pressure balance shield, and preparation method and application of foaming agent |
| CN105295933A (en) * | 2015-11-24 | 2016-02-03 | 上海三瑞高分子材料股份有限公司 | Soil modifier for earth pressure balance shield |
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| CN106433679A (en) | 2017-02-22 |
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