CN116445164B - Foaming agent composition, foaming agent for shield, preparation method and application - Google Patents
Foaming agent composition, foaming agent for shield, preparation method and application Download PDFInfo
- Publication number
- CN116445164B CN116445164B CN202310334973.8A CN202310334973A CN116445164B CN 116445164 B CN116445164 B CN 116445164B CN 202310334973 A CN202310334973 A CN 202310334973A CN 116445164 B CN116445164 B CN 116445164B
- Authority
- CN
- China
- Prior art keywords
- foaming agent
- parts
- foam
- foaming
- polyoxyethylene ether
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000004088 foaming agent Substances 0.000 title claims abstract description 228
- 239000000203 mixture Substances 0.000 title claims abstract description 134
- 238000002360 preparation method Methods 0.000 title abstract description 9
- 239000006260 foam Substances 0.000 claims abstract description 193
- 229940051841 polyoxyethylene ether Drugs 0.000 claims abstract description 53
- 229920000056 polyoxyethylene ether Polymers 0.000 claims abstract description 53
- 239000003381 stabilizer Substances 0.000 claims abstract description 41
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 claims abstract description 40
- 239000004711 α-olefin Substances 0.000 claims abstract description 31
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 27
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 claims abstract description 24
- ZXEKIIBDNHEJCQ-UHFFFAOYSA-N isobutanol Chemical compound CC(C)CO ZXEKIIBDNHEJCQ-UHFFFAOYSA-N 0.000 claims abstract description 22
- 230000000149 penetrating effect Effects 0.000 claims abstract description 21
- 150000002191 fatty alcohols Chemical class 0.000 claims abstract description 20
- MRUAUOIMASANKQ-UHFFFAOYSA-N cocamidopropyl betaine Chemical compound CCCCCCCCCCCC(=O)NCCC[N+](C)(C)CC([O-])=O MRUAUOIMASANKQ-UHFFFAOYSA-N 0.000 claims abstract description 19
- DAJSVUQLFFJUSX-UHFFFAOYSA-M sodium;dodecane-1-sulfonate Chemical compound [Na+].CCCCCCCCCCCCS([O-])(=O)=O DAJSVUQLFFJUSX-UHFFFAOYSA-M 0.000 claims abstract description 13
- 229940073507 cocamidopropyl betaine Drugs 0.000 claims abstract description 12
- YWFWDNVOPHGWMX-UHFFFAOYSA-N n,n-dimethyldodecan-1-amine Chemical compound CCCCCCCCCCCCN(C)C YWFWDNVOPHGWMX-UHFFFAOYSA-N 0.000 claims abstract description 12
- -1 fatty alcohol sulfate Chemical class 0.000 claims abstract description 8
- 238000000034 method Methods 0.000 claims description 35
- 239000002562 thickening agent Substances 0.000 claims description 17
- 230000008569 process Effects 0.000 claims description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 14
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 13
- 229910052799 carbon Inorganic materials 0.000 claims description 13
- 238000010276 construction Methods 0.000 claims description 13
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims description 11
- 125000004432 carbon atom Chemical group C* 0.000 claims description 8
- 239000011780 sodium chloride Substances 0.000 claims description 7
- 235000014113 dietary fatty acids Nutrition 0.000 claims description 6
- 239000000194 fatty acid Substances 0.000 claims description 6
- 229930195729 fatty acid Natural products 0.000 claims description 6
- 150000004665 fatty acids Chemical class 0.000 claims description 6
- 150000003871 sulfonates Chemical class 0.000 claims description 6
- 235000013162 Cocos nucifera Nutrition 0.000 claims description 4
- 244000060011 Cocos nucifera Species 0.000 claims description 4
- 150000003467 sulfuric acid derivatives Chemical class 0.000 claims description 4
- 238000009472 formulation Methods 0.000 claims description 2
- QKZIVVMOMKTVIK-UHFFFAOYSA-M anilinomethanesulfonate Chemical group [O-]S(=O)(=O)CNC1=CC=CC=C1 QKZIVVMOMKTVIK-UHFFFAOYSA-M 0.000 claims 1
- 238000005187 foaming Methods 0.000 abstract description 90
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 abstract description 4
- 239000001913 cellulose Substances 0.000 abstract description 4
- 229920002678 cellulose Polymers 0.000 abstract description 4
- 229910052708 sodium Inorganic materials 0.000 abstract description 4
- 239000011734 sodium Substances 0.000 abstract description 4
- IIACRCGMVDHOTQ-UHFFFAOYSA-M sulfamate Chemical compound NS([O-])(=O)=O IIACRCGMVDHOTQ-UHFFFAOYSA-M 0.000 abstract description 3
- 239000011248 coating agent Substances 0.000 abstract 1
- 238000000576 coating method Methods 0.000 abstract 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 19
- 239000002689 soil Substances 0.000 description 19
- 230000000052 comparative effect Effects 0.000 description 17
- 239000002184 metal Substances 0.000 description 11
- 229910052751 metal Inorganic materials 0.000 description 11
- 238000010998 test method Methods 0.000 description 11
- 230000008859 change Effects 0.000 description 9
- 238000005260 corrosion Methods 0.000 description 9
- 230000007797 corrosion Effects 0.000 description 9
- 229910052742 iron Inorganic materials 0.000 description 9
- 230000009286 beneficial effect Effects 0.000 description 8
- 238000012360 testing method Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 7
- 239000000243 solution Substances 0.000 description 7
- 239000004604 Blowing Agent Substances 0.000 description 5
- DBMJMQXJHONAFJ-UHFFFAOYSA-M Sodium laurylsulphate Chemical compound [Na+].CCCCCCCCCCCCOS([O-])(=O)=O DBMJMQXJHONAFJ-UHFFFAOYSA-M 0.000 description 5
- 230000002349 favourable effect Effects 0.000 description 5
- 150000002739 metals Chemical class 0.000 description 5
- 239000003755 preservative agent Substances 0.000 description 5
- 230000002335 preservative effect Effects 0.000 description 5
- 230000000087 stabilizing effect Effects 0.000 description 5
- 239000004094 surface-active agent Substances 0.000 description 5
- 241001391944 Commicarpus scandens Species 0.000 description 4
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 4
- 238000009412 basement excavation Methods 0.000 description 4
- 238000011156 evaluation Methods 0.000 description 4
- 238000010907 mechanical stirring Methods 0.000 description 4
- 239000012085 test solution Substances 0.000 description 4
- 238000005303 weighing Methods 0.000 description 4
- 150000001875 compounds Chemical class 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- 230000035699 permeability Effects 0.000 description 3
- 239000004033 plastic Substances 0.000 description 3
- 229910001220 stainless steel Inorganic materials 0.000 description 3
- 239000010935 stainless steel Substances 0.000 description 3
- HVBSAKJJOYLTQU-UHFFFAOYSA-M 4-aminobenzenesulfonate Chemical compound NC1=CC=C(S([O-])(=O)=O)C=C1 HVBSAKJJOYLTQU-UHFFFAOYSA-M 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 235000019864 coconut oil Nutrition 0.000 description 2
- 239000003240 coconut oil Substances 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 239000008233 hard water Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 239000002893 slag Substances 0.000 description 2
- 238000002791 soaking Methods 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 239000004354 Hydroxyethyl cellulose Substances 0.000 description 1
- 229920000663 Hydroxyethyl cellulose Polymers 0.000 description 1
- VMHLLURERBWHNL-UHFFFAOYSA-M Sodium acetate Chemical compound [Na+].CC([O-])=O VMHLLURERBWHNL-UHFFFAOYSA-M 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 150000008051 alkyl sulfates Chemical class 0.000 description 1
- 239000003945 anionic surfactant Substances 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000003599 detergent Substances 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 235000019447 hydroxyethyl cellulose Nutrition 0.000 description 1
- 229920003063 hydroxymethyl cellulose Polymers 0.000 description 1
- 229940031574 hydroxymethyl cellulose Drugs 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 239000012263 liquid product Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 235000017281 sodium acetate Nutrition 0.000 description 1
- 239000001632 sodium acetate Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 230000000638 stimulation Effects 0.000 description 1
- 239000011550 stock solution Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 229910021653 sulphate ion Inorganic materials 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- 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
- C09K17/14—Soil-conditioning materials or soil-stabilising materials containing organic compounds only
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/001—Improving soil or rock, e.g. by freezing; Injections
- E21D9/002—Injection methods characterised by the chemical composition used
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/06—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining
-
- 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
Abstract
The application relates to a foaming agent composition for a shield, a foaming agent, a preparation method and application. The coating comprises the following components in parts by mass: 15-20 parts of foaming agent, 0.5-3 parts of auxiliary foaming agent, 0.5-2 parts of foam stabilizer and 0.5-1.5 parts of penetrating agent; the foaming agent is one or more selected from alpha-olefin sulfonate, fatty alcohol polyoxyethylene ether sulfate and sodium dodecyl sulfonate; the penetrating agent comprises isobutanol polyoxyethylene ether; the auxiliary foaming agent is one or two selected from dodecyl dimethyl ammonium oxide or sodium cocoyl amphoacetate; the foam stabilizer comprises one or more of cocamidopropyl betaine, sulfamate, fatty alcohol sulfate and cellulose; the mass ratio of the auxiliary foaming agent to the foam stabilizer is (0.1-2): 1. the prepared foaming agent has high foaming speed and good foaming force and foam stability.
Description
Technical Field
The invention relates to the technical field of rail transit engineering, and further relates to the technical field of tunnel construction engineering, in particular to a foaming agent composition, a foaming agent for a shield, a preparation method and application.
Background
In recent years, as available space of ground resources of urban traffic is reduced, development and construction importance of underground space is increasingly prominent, and track traffic construction has become an important point of urban development. The earth pressure balance shield construction method is not influenced by terrains, landforms, soil layers and the like, has obvious technical and economical advantages and is widely applied. The soil pressure balance shield working condition mode has higher requirements on the muck, and the muck has good flow plastic property, good viscosity-soft consistency, low friction force, water permeability and the like. One of the main ways to improve the soil state in the construction process to meet the requirement of the shield machine operation is to use additives, wherein the foaming agent is an important additive, but the foaming agent used in the current market often has the problems of slow foaming, poor stability or easiness in corroding shield equipment and the like.
Disclosure of Invention
Based on the above, the purpose of the application comprises providing a foaming agent composition, which can prepare a foaming agent with higher foaming speed and good foam stability, and is beneficial to improving the soil state in the shield process.
In a first aspect of the present application, there is provided a foaming agent composition comprising the following components in parts by mass:
15-20 parts of foaming agent, 0.5-3 parts of auxiliary foaming agent, 0.5-2 parts of foam stabilizer and 0.5-1.5 parts of penetrating agent;
the foaming agent is one or more selected from alpha-olefin sulfonate, fatty alcohol polyoxyethylene ether sulfate and sodium dodecyl sulfonate;
the penetrating agent comprises isobutanol polyoxyethylene ether;
the auxiliary foaming agent is one or two selected from dodecyl dimethyl ammonium oxide or sodium cocoyl amphoacetate;
the foam stabilizer comprises one or more of cocamidopropyl betaine, sulfamate, fatty alcohol sulfate and cellulose;
the mass ratio of the auxiliary foaming agent to the foam stabilizer is (0.1-2): 1.
in some embodiments, the foam composition further comprises a thickener.
In some embodiments, the foaming agent composition comprises 0.5 to 2 parts by mass of a thickening agent; and/or the number of the groups of groups,
the thickener is one or two selected from sodium chloride and coconut oil fatty acid diethanolamide.
In some embodiments, the foaming agent composition comprises the following components in percentage by mass:
4 to 12 parts of alpha-olefin sulfonate, 0 to 5 parts of fatty alcohol polyoxyethylene ether sulfate, 0 to 11 parts of sodium dodecyl sulfonate, 0.5 to 2 parts of dodecyl dimethyl ammonium oxide, 0.5 to 1.5 parts of TEGO TENS ES501,0 to 1 part of cocamidopropyl betaine and 0.5 to 1 part of isobutanol polyoxyethylene ether;
wherein the mass fraction value of at least one of the fatty alcohol-polyoxyethylene ether sulfate and the sodium dodecyl sulfate is more than 0.
In some embodiments, the foam composition satisfies one or both of the following conditions:
the alpha-olefin sulfonate is selected from alpha-olefin sulfonates with 14-16 carbon atoms;
the weight part value of the fatty alcohol-polyoxyethylene ether sulfate is more than 0, and the fatty alcohol-polyoxyethylene ether sulfate is selected from fatty alcohol-polyoxyethylene ether sulfates with 12-14 carbon atoms.
In a second aspect of the present application there is provided a foaming agent for a shield comprising water and the foaming agent composition of the first aspect.
In some embodiments, the foaming agent contains 60 to 80% of water by mass percent.
In some embodiments, the foaming agent satisfies one or both of the following conditions:
the kinematic viscosity of the foaming agent at 40 ℃ is 5mm 2 /s～18mm 2 /s；
The pH value of the foaming agent is 7-8.
In a third aspect of the present application there is provided a shield system comprising a shield apparatus and a foaming agent composition or foaming agent loaded on the shield apparatus, the foaming agent composition being as defined in the first aspect of the present application and the foaming agent being as defined in the second aspect of the present application.
In a fourth aspect of the present application, there is provided the use of the foam composition of the first aspect or the foam of the third aspect in a shield construction process.
In the application, the specific auxiliary foaming agent and the compounded foam stabilizer component are adopted, and the foaming agent with high foaming speed and good foaming force and foam stability can be prepared by utilizing the compounded combination of the auxiliary foaming agent and the foam stabilizer and the compatibility of the auxiliary foaming agent and the foam stabilizer with the foaming agent and the penetrating agent.
When the foaming agent is applied to the shield construction process, the fluid characteristics of the dregs can be effectively improved, so that the soil body has better flow plastic property and viscosity-soft consistency, and lower friction force and water permeability, and the working condition in a pressure cabin of the earth pressure balance shield is facilitated, thereby greatly improving the excavation and soil discharge processes of the shield machine.
In addition, the foaming agent composition and the foaming agent provided by the application can be free from adding preservative, so that the corrosion of the foaming agent prepared from the foaming agent composition to metal members in a tunnel can be reduced, and the pollution to soil can be reduced.
Detailed Description
In order that the invention may be understood more fully, a more particular description of the invention will be rendered by reference to preferred embodiments thereof. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.
Terminology
Unless otherwise indicated or contradicted, terms or phrases used herein have the following meanings:
In the present invention, the terms "plurality", "plural", and the like are referred to, and the terms "a plurality", and the like are not particularly limited, and are 2 or more in number. For example, "one or more" means one kind or two or more kinds.
In the present invention, "preferred", "better", "preferred" are merely embodiments or examples which are better described, and it should be understood that they do not limit the scope of the present invention. If there are multiple "preferences" in a solution, if there is no particular description and there is no conflict or constraint, then each "preference" is independent of the others.
In the present invention, "further", "still further", "particularly" and the like are used for descriptive purposes to indicate differences in content but should not be construed as limiting the scope of the invention.
In the invention, the technical characteristics described in an open mode comprise a closed technical scheme composed of the listed characteristics and also comprise an open technical scheme comprising the listed characteristics.
In the present invention, a numerical range (i.e., a numerical range) is referred to, and, unless otherwise indicated, a distribution of optional values within the numerical range is considered to be continuous and includes two numerical endpoints (i.e., a minimum value and a maximum value) of the numerical range, and each numerical value between the two numerical endpoints. When a numerical range merely points to integers within the numerical range, unless expressly stated otherwise, both endpoints of the numerical range are inclusive of the integer between the two endpoints, and each integer between the two endpoints is equivalent to the integer directly recited. When multiple numerical ranges are provided to describe a feature or characteristic, the numerical ranges may be combined. In other words, unless otherwise indicated, the numerical ranges disclosed herein are to be understood as including any and all subranges subsumed therein. The "numerical value" in the numerical interval may be any quantitative value, such as a number, a percentage, a proportion, or the like. "numerical intervals" allows for the broad inclusion of numerical interval types such as percentage intervals, proportion intervals, ratio intervals, and the like.
In the present invention, the temperature parameter is allowed to be constant temperature processing, and also allowed to vary within a certain temperature range, unless otherwise specified. It should be appreciated that the constant temperature process described allows the temperature to fluctuate within the accuracy of the instrument control. Allows for fluctuations within a range such as + -5 ℃, + -4 ℃, + -3 ℃, + -2 ℃, + -1 ℃.
In the present invention, referring to a unit of a data range, if a unit is only carried behind a right end point, the units indicating the left and right end points are the same. For example, 3 to 5h means that the units of the left end point "3" and the right end point "5" are both h (hours).
The shield method is an important method in tunnel construction engineering of urban rail transit. In the construction process of the shield method, the loose muck has poor stability, so that the further excavation and soil discharge processes of the shield machine are influenced, and therefore, some means are needed to enable the muck to have good plastic flowing property, good viscosity-soft consistency and low friction force and water permeability. In the traditional technology, a surfactant is adopted as a main component of the foaming agent, so that the conditions of insufficient foaming force and poor stability often exist, and even if a thickening agent is added, the foaming force is difficult to improve well; meanwhile, in order to corrode iron parts in the tunnel structure by the surface foaming agent, a preservative is often added, however, the preservative is not only harmful to soil, but also is easy to cause poor stability of foam.
The inventor of the application discovers that a foaming agent composition contains a specific auxiliary foaming agent and a compounded foam stabilizer component through a large amount of experimental exploration, and the foaming agent prepared by the foaming agent composition has the advantages of high foaming speed, excellent foaming force, good stability of the foam obtained by foaming, long half-life period, no preservative or thickening agent, and no corrosion to metals.
In a first aspect of the present application, there is provided a foaming agent composition comprising the following components in parts by mass:
15-20 parts of foaming agent, 0.5-3 parts of auxiliary foaming agent, 0.5-2 parts of foam stabilizer and 0.5-1.5 parts of penetrating agent;
the foaming agent is one or more selected from alpha-olefin sulfonate, fatty alcohol polyoxyethylene ether sulfate and sodium dodecyl sulfonate;
the penetrating agent comprises isobutanol polyoxyethylene ether;
the auxiliary foaming agent is one or two selected from dodecyl dimethyl ammonium oxide or sodium cocoyl amphoacetate;
the foam stabilizer comprises one or two of cocamidopropyl betaine, sulfamate, fatty alcohol sulfate and cellulose;
the mass ratio of the auxiliary foaming agent to the foam stabilizer is (0.01-0.02): 1.
The foaming agent composition for the shield comprises a foaming aid agent and a compound foaming stabilizer, dodecyl dimethyl ammonium oxide is used as the foaming aid agent, cocamidopropyl betaine, sulfanilate and fatty alcohol sulfate are used as the compound foaming stabilizer, the mass ratio of the foaming aid agent to the foaming stabilizer is limited, and the foaming aid agent is compatible with the foaming agent and the penetrating agent, so that the foaming agent with high foaming speed and good foaming force and foaming stability can be prepared.
In some embodiments, in the above-mentioned foam composition comprising 15 to 20 parts of foaming agent, 0.5 to 3 parts of auxiliary foaming agent, 0.5 to 2 parts of foam stabilizer and 0.5 to 1.5 parts of penetrating agent, the foam composition comprises 15 to 20 parts of foaming agent, further 15 to 18 parts, further 15 to 17 parts, and further one or two of the following ranges may be selected: 15 parts, 15.5 parts, 16 parts, 16.5 parts, 17 parts, 17.5 parts, 18 parts, 18.5 parts, 19 parts, 19.5 parts, 20 parts, etc.
The proper content of the foaming agent is more favorable for exerting the effect of foaming components, namely foaming capacity, and the foaming speed of the prepared foaming agent is improved. If the content of the foaming agent in the foaming agent composition is low, the kinematic viscosity of the prepared foaming agent is low, the foaming speed of the foaming agent is low, and soil body is easy to collapse after the foaming agent is added into dregs; if the content of the foaming agent in the foaming agent composition is higher, material waste and insignificant effect can be caused, and the kinematic viscosity of the foam is higher, so that the soil discharge in the shield excavation process is not facilitated.
Hereinafter, when the parts by mass of the co-blowing agent, foam stabilizer, penetrating agent, thickener, etc. in the foam composition are described, unless otherwise specified, the parts by mass of the aforementioned blowing agent are referred to, for example, 15 parts to 20 parts or any other suitable part by mass range as described above.
In some embodiments, the foaming agent composition comprises 0.5 to 3 parts of auxiliary foaming agent, further can be 0.5 to 2.5 parts, further can be 0.5 to 2 parts, and can be selected from the interval consisting of one part or two parts as follows: 0.5 part, 0.6 part, 0.7 part, 0.8 part, 0.9 part, 1 part, 1.1 part, 1.2 parts, 1.3 parts, 1.4 parts, 1.5 parts, 1.6 parts, 1.7 parts, 1.8 parts, 1.9 parts, 2 parts, 2.1 parts, 2.2 parts, 2.3 parts, 2.4 parts, 2.5 parts, 2.6 parts, 2.7 parts, 2.8 parts, 2.9 parts, 3 parts, and the like. The more suitable auxiliary foaming agent is more beneficial to improving the foam stability of the prepared foaming agent, thereby improving the stability of the dregs layer. The auxiliary foaming agent in the foaming agent composition has lower content, and the prepared foaming agent possibly has larger foam size and higher fluidity, so that the stability of the foam is poor, and the soil body is easy to collapse after the auxiliary foaming agent is added into the dregs; however, if the content of the auxiliary foaming agent introduced into the foam composition is higher, the foaming speed of the prepared foaming agent is slower, the size of the foam is smaller, the fluidity of the soil body added into the slag soil is poorer or the content of the foaming agent required to be added into the slag soil with the same volume is higher.
The auxiliary foaming agent is one or two selected from dodecyl dimethyl ammonium oxide or cocoyl amphoteric sodium acetate.
In some embodiments, the foam composition comprises 0.5 to 2 parts of foam stabilizer, further 1 to 1.8 parts, further 1 to 1.5 parts, and one or two parts selected from the following ranges: 0.5 part, 0.6 part, 0.7 part, 0.8 part, 0.9 part, 1 part, 1.1 part, 1.2 parts, 1.3 parts, 1.4 parts, 1.5 parts, and the like. The proper content of the foam stabilizer is more beneficial to improving the foaming speed and the stability of the foam of the prepared foam agent. If the content of the foam stabilizer in the foam agent composition is low, the foam stabilizing effect is probably not obvious; if the foam stabilizer content in the foam composition is higher, the foaming capacity may be affected, and the foaming capacity of the finished product of the foaming agent is finally low.
In some embodiments, the foam composition includes 0.5 to 1.5 parts of penetrating agent, further may be 0.5 to 1.3 parts, further may be 0.5 to 1 part, and may be selected from a range consisting of one or two parts as follows: 0.5 part, 0.6 part, 0.7 part, 0.8 part, 0.9 part, 1 part, 1.1 part, 1.2 parts, 1.3 parts, and the like. The penetrating agent adopted in the application is isobutanol polyoxyethylene ether, and plays a role in promoting the penetration of the product into the improved soil body. The proper penetrant content of the foam composition is more beneficial to the optimal effect, so that the finished foam is facilitated to enter the improved soil. If the penetrant content in the foam composition is low, the effect may be insignificant; if the blowing agent content in the blowing agent composition is too high, this may be counterproductive, thereby affecting the foaming capacity.
In some embodiments, the foaming agent is a compounded foaming agent in the foaming agent composition.
In some embodiments, the foaming agent is selected from the group consisting of alpha olefin sulfonates and fatty alcohol polyoxyethylene ether sulfates.
In some embodiments, the foaming agent is selected from the group consisting of alpha olefin sulfonate and sodium dodecyl sulfonate.
In some embodiments, the foam composition comprises 4 to 15 parts by mass of alpha-olefin sulfonate, further 4 to 13 parts by mass, and further 4 to 12 parts by mass. alpha-Olefin sulfonate (AOS) is an anionic surfactant, and has the advantages of high foam, good hydrolysis stability, excellent hard water resistance, mildness and no stimulation. The suitable alpha-olefin sulfonate content of the foam composition is more advantageous in achieving a better foaming power. If the alpha-olefin sulfonate content in the foam composition is low, the foaming amount is small, and the foam is easy to break; if the content of alpha-olefin sulfonate in the foaming agent composition is higher, the foaming amount may be reduced, and the foaming effect of the system cannot be improved.
In some embodiments, the foaming agent composition comprises 0 to 6 parts of fatty alcohol polyoxyethylene ether sulfate, further 0 to 5.5 parts, and further 0 to 5 parts by mass. Fatty alcohol polyoxyethylene ether sulfate (Sodium Alcohol Ether Sulphate, abbreviated as AES), also known as ethoxylated alkyl sulfate and fatty alcohol ether sulfate. The proper content of the fatty alcohol polyoxyethylene ether sulfate in the foaming agent composition is more favorable for obtaining excellent foaming force and foam stability. If the content of the fatty alcohol-polyoxyethylene ether sulfate in the foaming agent composition is low, the foaming amount is low, the foam is large and the foaming agent composition is easy to break; if the content of the fatty alcohol polyoxyethylene ether sulfate in the foaming agent composition is higher, the dissolution time is prolonged, the foaming force cannot be improved, and the foaming force limit is reached.
In some embodiments, the foaming agent composition comprises 0 to 15 parts by mass of sodium dodecyl sulfate, further 0 to 13 parts by mass, and further 0 to 11 parts by mass. Sodium dodecyl sulfonate (Dodecyl Sodium Sulfonate, also known as sodium lauryl sulfonate, K12), has good foamability, is biodegradable, and is resistant to hard water. The proper sodium dodecyl sulfonate content in the foaming agent composition is more favorable for compounding with other surfactants, so as to achieve better foaming amount. If the sodium dodecyl sulfate content in the foaming agent composition is low, the foaming capacity may be reduced; if the sodium dodecyl sulfate content in the foaming agent composition is higher, the foaming ability may be lowered.
In some embodiments, the foam composition comprises, in parts by mass, 0.5 to 2 parts of TEGO TENS ES501, more preferably 0.5 to 1.8 parts, and still more preferably 0.5 to 1.5 parts. TEGO TENS ES501 is a high sudsing surfactant that is a mixture of sulfanilate and fatty alcohol sulfate. The compound foam stabilizer containing TEGO TENS ES501 and cocoamidopropyl betaine is adopted, the mass ratio of the TEGO TENS ES501 to cocoamidopropyl betaine is more favorable for the compatibility of the foam stabilizer and the auxiliary foaming agent, and the system viscosity of the prepared foaming agent is better improved. If the TEGO TENS ES501 to cocamidopropyl betaine mass ratio in the foam composition is low, poor foam stability may result; if the mass ratio of TEGO TENS ES501 to cocamidopropyl betaine is too high, the viscosity of the system may be too high, resulting in reduced solubility.
In some embodiments, the foaming agent composition comprises 0 to 1.5 parts of cocamidopropyl betaine, further 0.5 to 1.2 parts, and further 0 to 1 part by mass. The cocoamidopropyl betaine (Cocoamidopropyl Betaine, abbreviated as CAB) has the function of thickening and stabilizing bubbles. The proper content of the fatty alcohol-polyoxyethylene ether sulfate in the foaming agent composition is more beneficial to properly improving the foam strength, and the foam is not easy to break. If the content of the fatty alcohol-polyoxyethylene ether sulfate in the foaming agent composition is low, insufficient foam stabilizing force can be caused; if the content of the fatty alcohol polyoxyethylene ether sulfate in the foaming agent composition is higher, foaming may be affected.
In some embodiments, the cellulose is one or both of hydroxymethyl cellulose and hydroxyethyl cellulose.
In some embodiments, the foaming agent composition comprises the following components in parts by mass: 15 to 18 parts of foaming agent, 0.5 to 2.5 parts of auxiliary foaming agent, 1 to 1.8 parts of foam stabilizer and 0.5 to 1.3 parts of penetrating agent.
In some embodiments, the foaming agent composition comprises the following components in parts by mass: 15 to 17 parts of foaming agent, 0.5 to 2 parts of auxiliary foaming agent, 1 to 1.5 parts of foam stabilizer and 0.5 to 1 part of penetrating agent.
In some embodiments, the foaming agent composition comprises the following components in parts by mass: 4 to 12 parts of alpha-olefin sulfonate, 0 to 5 parts of fatty alcohol polyoxyethylene ether sulfate, 0 to 11 parts of sodium dodecyl sulfonate, 0.5 to 2 parts of dodecyl dimethyl ammonium oxide, 0.5 to 1.5 parts of TEGO TENS ES501,0 to 1 part of cocamidopropyl betaine and 0.5 to 1 part of isobutanol polyoxyethylene ether.
In some embodiments, the foam booster composition comprises the foam stabilizer in a mass ratio of (0.1-2): 1, further may be (0.1 to 1.5): 1, further may be (0.3 to 1.5): 1, can also be selected from the interval formed by one or two of the following mass ratios: 0.1:1, 0.2:1, 0.3:1, 0.33:1, 0.4:1, 0.5:1, 0.6:1, 0.7:1, 0.8:1, 0.9:1, 1:1, 1.1:1, 1.2:1, 1.3:1, 1.33:1, 1.4:1, 1.5:1, 1.6:1, 1.7:1, 1.8:1, 1.9:1, 2:1, etc. The proper mass ratio of the auxiliary foaming agent relative to the foam stabilizer is more favorable for improving the density degree and the foam stability of the foam obtained by foaming the foaming agent prepared by mixing the foaming agent composition and water, and if the mass ratio of the auxiliary foaming agent relative to the foaming agent is higher, the foaming speed of the foaming agent is high, but the stability of the foam is poor, the half-life period is shorter, and the foam is easy to collapse; if the mass ratio of the auxiliary foaming agent to the foaming agent is low, the foaming efficiency of the foaming agent may be low.
In some embodiments, the foam composition further comprises a thickener.
In some embodiments, in the foregoing foam composition including 15 parts to 20 parts of the foaming agent, 0.5 parts to 3 parts of the auxiliary foaming agent, 0.5 parts to 2 parts of the foam stabilizer and 0.5 parts to 1.5 parts of the penetrating agent, the foam composition includes 0.5 parts to 2 parts of the thickening agent, further may be 1 part to 1.8 parts, further may be 1 part to 1.5 parts, and may be selected from a section consisting of one part or two parts as follows: 0.5 part, 0.6 part, 0.7 part, 0.8 part, 0.9 part, 1 part, 1.1 part, 1.2 parts, 1.3 parts, 1.4 parts, 1.5 parts, 1.6 parts, 1.7 parts, 1.8 parts, 1.9 parts, 2 parts, and the like.
In some embodiments, the foaming agent composition wherein the thickening agent is selected from one or both of sodium chloride and coconut fatty acid diethanolamide.
In some embodiments, the foaming agent composition comprises 0 to 1.5 parts by mass of sodium chloride, and further comprises 0.5 to 1.1 parts by mass, and further comprises 0 to 1 part by mass.
In some embodiments, the foaming agent composition comprises 0 to 2 parts by mass of coconut oil fatty acid diethanolamide, further 0.5 to 1.8 parts by mass, and further 0 to 1.5 parts by mass.
In some embodiments, the foaming agent composition comprises the following components in parts by mass: 15 to 18 parts of foaming agent, 0.5 to 2.5 parts of auxiliary foaming agent, 1 to 1.8 parts of foam stabilizer, 0.5 to 1.3 parts of penetrating agent and 1 to 1.8 parts of thickening agent.
In some embodiments, the foaming agent composition comprises the following components in parts by mass: 15 to 17 parts of foaming agent, 0.5 to 2 parts of auxiliary foaming agent, 1 to 1.5 parts of foam stabilizer, 0.5 to 1 part of penetrating agent and 1 to 1.5 parts of thickening agent.
In some embodiments, the foaming agent composition comprises the following components in parts by mass: 4 to 12 parts of alpha-olefin sulfonate, 0 to 5 parts of fatty alcohol polyoxyethylene ether sulfate, 0 to 11 parts of sodium dodecyl sulfonate, 0.5 to 2 parts of dodecyl dimethyl ammonium oxide, 0.5 to 1.5 parts of TEGO TENS ES501,0 to 1 part of cocamidopropyl betaine, 0.5 to 1 part of isobutanol polyoxyethylene ether, 0 to 1 part of industrial salt sodium chloride and 0 to 1.5 parts of coconut fatty acid diethanolamide.
In some embodiments, the foaming agent composition comprises at least one of the fatty alcohol-polyoxyethylene ether sulfate and the sodium dodecyl sulfate with a mass fraction value greater than 0.
In some embodiments, the foaming agent composition comprises the fatty alcohol-polyoxyethylene ether sulfate with the mass fraction value of more than 0, wherein the fatty alcohol-polyoxyethylene ether sulfate is selected from fatty alcohol-polyoxyethylene ether sulfates with the carbon number of 12-14.
In some embodiments, the foam composition is selected from the group consisting of alpha-olefin sulfonates having from 14 to 16 carbon atoms. The more suitable alpha-olefin sulfonates are more advantageous for improving the foam stability of the foam formulation. If the alpha-olefin sulfonate with lower carbon number is adopted, the foam stability of the foaming agent can be poor; the use of higher carbon number alpha olefin sulfonates may result in poor solubility of the foam composition or in decreased uniformity of the foam system.
In some embodiments, the foam composition is a foam composition wherein the alpha olefin sulfonate is selected from one or more of a 14 carbon alpha olefin sulfonate, a 15 carbon alpha olefin sulfonate, and a 16 carbon alpha olefin sulfonate.
In some embodiments, the foaming agent composition, the fatty alcohol-polyoxyethylene ether sulfate is selected from fatty alcohol-polyoxyethylene ether sulfate with 12-14 carbon atoms. The proper fatty alcohol-polyoxyethylene ether sulfate is more beneficial to balancing the foaming speed and the foam stability of the foaming agent. If the fatty alcohol polyoxyethylene ether sulfate with lower carbon number is adopted, the foaming speed of the foaming agent is higher but the foam stability is poor; if the fatty alcohol polyoxyethylene ether sulfate with higher carbon number is adopted, the foaming speed of the foaming agent can be slow.
In some embodiments, the foaming agent composition, the fatty alcohol-polyoxyethylene ether sulfate is selected from one or more of fatty alcohol-polyoxyethylene ether sulfate with 12 carbon atoms, fatty alcohol-polyoxyethylene ether sulfate with 13 carbon atoms and fatty alcohol-polyoxyethylene ether sulfate with 14 carbon atoms.
In some embodiments, the fatty alcohol-polyoxyethylene ether sulfate is selected from AES-70.
In a second aspect of the present application there is provided a foaming agent for a shield comprising water and the foaming agent composition of the first aspect.
The foaming agent has the effects of high foaming speed, good foaming force, good foam stability and proper foam half-life, has good biodegradability, can not add preservative, and reduces corrosion to a cutter head or a metal component in the foaming agent storage equipment and pollution to soil.
In some embodiments, the foaming agent contains 60% -80% of water by mass percent, and can be selected from the following interval consisting of one mass percent or two mass percent: 60%, 65%, 70%, 75%, 80%, etc.
In some embodiments, the foaming agent for shield comprises the following steps: dissolving the foaming agent composition in the first aspect in water, and standing to obtain the foaming agent.
In some embodiments, the foaming agent for shield comprises the following steps: dissolving the foaming agent composition in the first aspect in water, dissolving the foaming agent, adding the foam stabilizer, the thickener, the auxiliary foaming agent and the penetrating agent, fully stirring until the foaming agent is completely dissolved, and standing to obtain the foaming agent.
In some embodiments, the foam composition is dissolved in, and allowed to stand for 30 minutes to 60 minutes.
In some embodiments, the foaming agent has a kinematic viscosity of 5mm at 40 °c 2 /s～18mm 2 The composition may be further selected from the following range of one or two kinematic viscosity values: 5mm of 2 /s、6mm 2 /s、7mm 2 /s、、8mm 2 /s、9mm 2 /s、9.2mm 2 /s、10mm 2 /s、11mm 2 /s、12mm 2 /s、12.5mm 2 /s、13mm 2 /s、14mm 2 /s、15mm 2 /s、16mm 2 /s、17mm 2 /s、18mm 2 /s, etc.
In some embodiments, the pH of the foaming agent is 7 to 8, and may be selected from the following range of one pH or two pH values: 7. 7.1, 7.2, 7.3, 7.4, 7.5, 7.6, 7.8, 7.9, 8, etc.
Foaming ratio: also called the foaming rate, refers to the ratio of the volume of foam generated by a volume of the foamer solution to the volume of air bubbles generated per unit volume of the foamer solution.
In some embodiments, the foaming ratio of the foaming agent is 15-20 times, and the foaming ratio is further 15 times, 15.5 times, 16 times, 16.5 times, 17 times, 17.5 times, 18 times, 18.5 times, 19 times, 19.5 times, 20 times, measured by a mechanical stirring method.
In some embodiments, the half-life of the foaming agent is 4 min-8 min, and the half-life is measured by a rogowski bubble method, further can be 5 min-8 min, further can be 5 min-7 min, and can be selected from the following interval consisting of one time or two times: 4min, 5min, 6min, 7min, 8min, etc.
In a third aspect of the present application there is provided a shield system comprising a shield apparatus and a foaming agent composition or foaming agent loaded on the shield apparatus, the foaming agent composition being as defined in the first aspect of the present application and the foaming agent being as defined in the second aspect of the present application.
The foaming agent composition is adopted in shield equipment, and the method for preparing the foaming agent in the shield equipment is simple.
In some embodiments, the foaming agent composition or the foaming agent is added to a foaming system of a shield machine, and the foaming agent foamed by mechanical stirring is used for a shield pushing process.
In a fourth aspect of the present application, there is provided the use of the foam composition of the first aspect or the foam of the third aspect in a shield construction process.
The foaming agent is applied to the shield construction process, can effectively improve the fluid characteristic of the dregs, is beneficial to the working condition in the pressure cabin of the earth pressure balance shield, and improves the excavation and soil discharge processes of the shield machine.
In order that the invention may be more readily understood and put into practical effect, the following more particular examples and comparative examples are provided as reference.
Unless otherwise specified, the raw materials used in each of the following experiments are commercially available.
The test method and the performance evaluation criteria are as follows:
(1) Kinematic viscosity
Test method of kinematic viscosity: the kinematic viscosity of the foam was tested using a rotational viscometer, specifically by measuring the viscosity and flow properties of the liquid product with reference to a GB/T15357-2014 surfactant and detergent rotational viscometer.
(2) Foaming speed
Test method of foaming speed: the foaming agent is prepared into 5% solution, the solution is put into a graduated 5000ml beaker, and the foaming speed is obtained when the foaming time(s) is required when the foam height reaches 4000ml after stirring at the rotating speed of 2000r/min of an electric power stirrer.
Evaluation criteria for foaming speed: the application considers that in a laboratory, the foaming time by adopting a mechanical stirring method is judged, and the method is specifically as follows:
excellent: the foaming speed is less than 10s;
qualified: the foaming speed is less than 15s and 10s;
poor: the foaming speed is more than or equal to 15s.
(3) Foaming force
Foaming force test foam volume was measured 30s, 3min and 5min after flow was stopped using GB/T7462-1994 modified Ross-Miles method for determination of foaming force of surfactant.
In this application, the determination is made by the change in the foam volume, specifically as follows:
excellent: 300s (3 min) of bubble volume > 580ml;
qualified: the bubble volume is less than 500ml and less than 300s (3 min) and less than or equal to 580ml;
poor: the volume of bubbles is less than or equal to 550ml after 300s (3 min).
(4) Foam stability
The half-life is measured by mechanical stirring, and the half-life is obtained by the method, namely, the time of separating out common liquid, namely, 500ml after the foam height reaches the highest.
Evaluation criteria for foam stability:
the half life of the foam is used as a criterion for judging the stability of the foam in the application. The method comprises the following steps:
excellent: the half life of the foam is more than 6min;
qualified: the half life of the foam is less than 4min and less than 6min;
poor: the half-life of the foam is less than 4min.
(5) Expansion ratio
The foaming ratio is the ratio of the volume of foam produced by a certain mass of foaming agent solution to the volume of stock solution, and the higher the foaming ratio is, the more foam is produced by the same amount of foaming agent, so that the high efficiency is shown, but the higher foaming ratio is at the expense of foam stability, and the foaming ratio of the foaming agent currently applied to earth pressure balance shield construction is 5-20.
(6) Corrosiveness of
Corrosiveness testing method: the test (enterprise standard) is carried out by adopting the metal corrosiveness detection standard of Q-HNJSGK 3-2022 shield dispersant. The specific method comprises the following steps: preparing a foaming agent into a 5% solution, performing iron nail soaking experiments, standing for 2 hours, observing the apparent state of the iron nail, and weighing the mass change of the iron nail. The specific test method comprises the following steps:
100ml of water and the foaming agent are respectively taken and uniformly mixed to prepare a test solution. Weighing 5 stainless steel nails, putting into a baking oven at 105+/-2 ℃ for 1h, and accurately weighing to 0.001g after the stainless steel nails are placed at normal temperature.
The iron nails were placed in the test solution, and the iron nails were observed to be corroded, and rust dissolved matter was floated on the liquid surface where the test solution was held. And placing the iron nails into a test solution for soaking for 4 hours, taking out, drying and weighing after constant weight.
Evaluation criteria for corrosiveness: the corrosiveness is tested by adopting the method, the mass loss is calculated, and no more than 1% of the mass loss is judged to be non-reactive with the stainless steel nails, and the metal is considered not to be corroded; otherwise, the corrosion to the iron nails is judged to be serious, and the metal is considered to be corroded.
Example 1
Preparation of a foaming agent: the foaming agent composition is weighed according to the formula in Table 1, the foaming agent is dissolved in water at 60 ℃, the foam stabilizer, the thickening agent, the auxiliary foaming agent and the penetrating agent are added, and the mixture is fully stirred until the foaming agent is completely dissolved, and the mixture is kept stand for 30min to obtain the foaming agent.
The foam was tested for performance using the test methods described above and the performance parameters measured are shown in table 2. It can be seen that the kinematic viscosity of the foam prepared with the foam composition was moderate (9.2 mm 2 S) the foaming speed was fast (only 10s foam volume was needed to reach 4000 ml) and the half life of the foam was 5.7min. The foaming agent has the volume of 610ml for foaming 30s, the volume of 585ml for 3min, the volume of 570ml for 5min, the foam volume change from 30s to 3min is faster, then the foam volume change from 3min to 5min is slower, which indicates that large foam exists, the foam strength is weak, the foam is broken in a shorter time, the foam decays more, the foam volume is reduced, the foam is small, the strength is large, and the foam volume change is slow after the foam is reduced to a certain degree.
The foaming agent in example 1 was tested for corrosion to nails by the method described above, and after 2 hours of testing, the foaming agent in example 1 did not react with nails, i.e., did not corrode metals.
Example 2
The composition of the foaming agent composition and the preparation method of the foaming agent in example 2 are basically the same as those in example 1 (see table 1), except that the foaming agent composition of example 1 further includes a thickener. The foam performance parameters measured using the same test method as in example 1 are shown in table 2.
It can be seen that the kinematic viscosity of the foam prepared with this foam composition is higher than that of example 1 (12 mm 2 S) the foaming speed was slower (20 s) than in example 1, but the half-life of the foam was extended to 6min; the foam had a volume of 560ml for 30 seconds after the flow had ceased, 560ml for 3 minutes, and 560ml for 5 minutes, and the foam of example 2 had a smaller change in volume at the end (3 min to 5 min) than that of example 1. The addition of the thickener is beneficial to further improving the foam density, so that the foaming speed of the embodiment 2 added with the thickener on the basis of the embodiment 1 is obviously slowed down and the kinematic viscosity is improved, but the requirements of shield engineering application can be met; the half-life period of the foam is prolonged, and the later foam collapse degree is reduced, so that the requirement of the long-time foam-retaining capacity of the foaming agent in shield engineering application can be met.
The foaming agent in example 2 was tested for corrosion to the iron nails by the method described above, and after 2 hours of testing, the foaming agent in example 2 did not react with the iron nails, i.e., did not corrode the metal.
Example 3
The procedure for preparing a foam from the foam composition of example 3 was substantially the same as in example 1, except that the composition of example 3 was different in composition from example 1 (see Table 1). The foam performance parameters measured using the same test method as in example 1 are shown in table 2.
The foaming agent in example 3 was tested for corrosion to nails by the method described above, and after 2 hours of testing, the foaming agent in example 3 did not react with nails, i.e., did not corrode metals.
Example 4
The procedure for preparing the foam composition of example 4 was substantially the same as in example 1, except that the foam composition of example 4 was different in composition from example 1 (see Table 1). The foam performance parameters measured using the same test method as in example 1 are shown in table 2.
As can be seen from Table 2, the kinematic viscosities (9.2 mm) of the foams prepared from the foam compositions of examples 1 to 4 2 /s～12.5mm 2 S) and pH is between 7 and 8 to meet the application requirements of the shield process; the foaming speed (10 s-20 s) is high, the half life of the foam is 5.7-7 min, and the foaming capacity is high.
The foaming agent in example 4 was tested for corrosion to nails by the method described above, and after 2 hours of testing, the foaming agent in example 4 did not react with nails, i.e., did not corrode metals.
Table 1 compositions (in parts by mass) of the foaming agent compositions of examples 1 to 4
Table 2 examples 1 to 4 foam performance test
Comparative example 1
The composition of the foam composition of comparative example 1, the preparation method of the foam, was substantially the same as in example 2, except that the foam composition of comparative example 2 did not contain a co-blowing agent (see Table 3).
The properties of the foam (see Table 4) measured using the same test method as in example 1 are as follows:
the kinematic viscosity of the foam prepared with the foam composition was higher than that of example 3 (13.3 mm 2 S) the foaming speed was slower (18 s) than in example 3, the half-life of the foam was shorter by only 5min; the foaming agent has a foaming volume of 30s of 315 ml, a 3min volume of 560ml and a 5min volume of 560ml; the foam of comparative example 1 had a larger foam volume change in the early stage (30 s to 3 min) than that of example 2 after the flow had stopped. Possible reasons are that no auxiliary foaming agent is added, so that the foam is not dense enough, the large-size foam is more, easy to break, the foam stability is poor, and the foaming force and the foaming speed are influenced.
The foaming agent in comparative example 1 was tested for corrosion to nails by the foregoing method, and after 2 hours of testing, the foaming agent in comparative example 1 did not react with nails, i.e., did not corrode metals.
Comparative example 2
The composition of the foam composition and the preparation method of the foam in comparative example 2 were substantially the same as in example 3, except that the foam composition of comparative example 3 contained no foam stabilizer (see table 3).
The properties of the foam (see Table 4) measured using the same test method as in example 1 are as follows:
the kinematic viscosity of the foam prepared from the foam composition was smaller than that of example 4 (9.5 mm 2 S) the foaming speed was slower than in example 4 (14 s), the half-life of the foam was shorter by only 4min; the foaming agent has a foaming volume of 620ml for 30 seconds, a volume of 560 ml for 3min and a volume of 580ml for 5 min; the foam of comparative example 2 showed a smaller foam volume change in the early stage (30 s to 3 min) than that of example 2 after the flow was stopped. The possible reason is that no stabilization is addedThe foaming agent, although the foaming ability is not significantly affected, has a significantly poor foam stabilizing ability.
Comparative example 3
The composition of the foam composition and the preparation method of the foam in comparative example 3 are basically the same as in example 3, except that the foam composition of comparative example 3 does not contain a co-foaming agent and cocoamidopropyl betaine is omitted from the foam stabilizer (see table 3).
The properties of the foam (see Table 4) measured using the same test method as in example 1 are as follows:
the kinematic viscosity of the foam prepared with the foam composition was higher than that of example 3 (13.6 mm 2 S) the foaming speed was faster (10 s) than in example 3, the half-life of the foam was shorter by only 4min; the foamer foamed 30s had a volume of 680ml,3min of 600ml and 5min of 540ml; the foam of comparative example 3 showed a larger change in foam volume at the early stage (30 s to 3 min) and the later stage (3 min to 5 min) than in example 2 after the flow was stopped. The possible reasons are that no auxiliary foaming agent is added, and the consumption of the cocoamidopropyl betaine and the foam stabilizer is low when the cocoamidopropyl betaine and the foam stabilizer are omitted in the foam stabilizer, so that the foam stabilizing capability is obviously reduced.
Table 3 compositions (in parts by mass) of the foam compositions of comparative examples 1 to 3
Table 4 comparative examples 1 to 3 foam performance test
In addition, the inventors of the present application found through experiments that:
the foaming agent composition has higher foaming speed but poor foam stability when the alpha-olefin sulfonate with low carbon number is selected, and has poorer system uniformity and slower foaming speed when the alpha-olefin sulfonate with higher carbon number is selected.
The foaming speed of the foaming agent is higher when the fatty alcohol-polyoxyethylene ether sulfate with low carbon number is selected, but the foaming stability is poor, and the foaming speed of the foaming agent is lower when the fatty alcohol-polyoxyethylene ether sulfate with high carbon number is selected.
The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The above examples illustrate only a few embodiments of the invention, which are described in detail and are not to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. The scope of the invention is, therefore, indicated by the appended claims, and the description may be intended to interpret the contents of the claims.
Claims (10)
1. The foaming agent composition is characterized by comprising the following components in parts by weight:
16-17 parts of foaming agent, 0.5-1.5 parts of auxiliary foaming agent, 1-1.5 parts of foam stabilizer and 0.5-1 part of penetrating agent;
the mass ratio of the auxiliary foaming agent to the foam stabilizer is (0.33-1.5): 1, a step of;
According to the parts by weight, the foaming agent consists of 4-12 parts of alpha-olefin sulfonate, 0-5 parts of fatty alcohol polyoxyethylene ether sulfate and 0-11 parts of sodium dodecyl sulfonate; wherein the weight part value of the fatty alcohol polyoxyethylene ether sulfate is more than 0;
the auxiliary foaming agent is dodecyl dimethyl ammonium oxide;
the foam stabilizer consists of 0-1 part of cocamidopropyl betaine and 0.5-1.5 parts of TEGO TENS ES 501;
the penetrating agent is isobutanol polyoxyethylene ether.
2. The foaming agent composition according to claim 1, further comprising 0.5 to 2 parts by mass of a thickener selected from one or both of sodium chloride and coconut fatty acid diethanolamide.
3. The foam composition according to claim 1, wherein the foam composition consists of, in parts by mass, 12 parts of an alpha-olefin sulfonate, 5 parts of a fatty alcohol polyoxyethylene ether sulfate, 1.5 parts of dodecyldimethyl ammonium oxide, 1 part of a TEGO TENS ES501 and 0.5 part of isobutanol polyoxyethylene ether.
4. The foam composition according to claim 2, wherein the foam composition consists of 12 parts of alpha-olefin sulfonate, 5 parts of fatty alcohol polyoxyethylene ether sulfate, 1.5 parts of dodecyldimethyl ammonium oxide, 1 part of TEGO TENS ES501, 0.5 part of isobutanol polyoxyethylene ether, and 1 part of industrial salt sodium chloride; or alternatively
The foaming agent composition consists of 11 parts of alpha-olefin sulfonate, 3 parts of fatty alcohol polyoxyethylene ether sulfate, 2 parts of sodium dodecyl sulfonate, 0.5 part of dodecyl dimethyl ammonium oxide, 0.5 part of TEGO TENS ES501, 1 part of cocamidopropyl betaine, 1 part of isobutanol polyoxyethylene ether, 1 part of industrial salt sodium chloride and 0.5 part of coconut fatty acid diethanolamide.
5. The foam composition according to any one of claims 1 to 4, wherein one or both of the following conditions are satisfied:
the alpha-olefin sulfonate is selected from alpha-olefin sulfonates with 14-16 carbon atoms;
the fatty alcohol-polyoxyethylene ether sulfate is selected from fatty alcohol-polyoxyethylene ether sulfates with the carbon number of 12-14.
6. A foaming agent for shield, characterized by comprising water and the foaming agent composition according to any one of claims 1 to 5.
7. The foaming agent according to claim 6, wherein the foaming agent contains 60% -80% of water by mass percent.
8. The foam formulation of claim 6, wherein one or both of the following conditions are met:
the kinematic viscosity of the foaming agent at 40 ℃ is 5 mm 2 /s ~18 mm 2 /s；
The pH value of the foaming agent is 7-8.
9. Shield apparatus comprising a shield device and a foaming agent composition or foaming agent loaded on the shield device, the foaming agent composition being as defined in any one of claims 1 to 5 and the foaming agent being as defined in any one of claims 6 to 8.
10. Use of the foaming agent composition according to any one of claims 1 to 5 or the foaming agent according to any one of claims 6 to 8 in a shield construction process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310334973.8A CN116445164B (en) | 2023-03-31 | 2023-03-31 | Foaming agent composition, foaming agent for shield, preparation method and application |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310334973.8A CN116445164B (en) | 2023-03-31 | 2023-03-31 | Foaming agent composition, foaming agent for shield, preparation method and application |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN116445164A CN116445164A (en) | 2023-07-18 |
| CN116445164B true CN116445164B (en) | 2024-04-05 |
Family
ID=87129552
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310334973.8A Active CN116445164B (en) | 2023-03-31 | 2023-03-31 | Foaming agent composition, foaming agent for shield, preparation method and application |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116445164B (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN105969368A (en) * | 2016-05-16 | 2016-09-28 | 四川恒泽建材有限公司 | Foaming agent for shield tunnelling machine and preparation method of foaming agent |
| CN106929023A (en) * | 2017-02-17 | 2017-07-07 | 山东大学 | The stable foam agent and preparation method and application of bad ground shield-tunneling construction |
| CN107033916A (en) * | 2017-04-21 | 2017-08-11 | 中国建筑材料科学研究总院 | A kind of Soil pressure balance shield foam agent and preparation method thereof |
| 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 |
| CN114395400A (en) * | 2021-12-14 | 2022-04-26 | 中国铁道科学研究院集团有限公司金属及化学研究所 | Foaming agent for shield tunneling machine and preparation method and application thereof |
-
2023
- 2023-03-31 CN CN202310334973.8A patent/CN116445164B/en active Active
Patent Citations (10)
| 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 |
| CN105969368A (en) * | 2016-05-16 | 2016-09-28 | 四川恒泽建材有限公司 | Foaming agent for shield tunnelling machine and preparation method of foaming agent |
| CN106929023A (en) * | 2017-02-17 | 2017-07-07 | 山东大学 | The stable foam agent and preparation method and application of bad ground shield-tunneling construction |
| CN107033916A (en) * | 2017-04-21 | 2017-08-11 | 中国建筑材料科学研究总院 | A kind of Soil pressure balance shield foam agent and preparation method thereof |
| 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 |
| CN114395400A (en) * | 2021-12-14 | 2022-04-26 | 中国铁道科学研究院集团有限公司金属及化学研究所 | Foaming agent for shield tunneling machine and preparation method and application thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN116445164A (en) | 2023-07-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1329475C (en) | Well drilling method and drilling fluid | |
| CN103964726B (en) | Earth pressure balanced shield, EPBS foaming agent | |
| CN107603629A (en) | A kind of environment-friendly type shield foaming agent and preparation method thereof | |
| CN102757197B (en) | Surface coating type reinforced concrete corrosion inhibitor and preparation method thereof | |
| CN101462844B (en) | Environment protection type efficient aerating powder for shield construction | |
| CN102031089B (en) | Non-chlorine environmentally-friendly snow melting agent | |
| CN106753303B (en) | A kind of gas well oil resistant slow-release solid foaming water discharge agent, preparation method and application | |
| CN104974730B (en) | A kind of foam discharging agent and the preparation method and application thereof of high temperature resistance, high salinity | |
| CN105295933A (en) | Soil modifier for earth pressure balance shield | |
| CN108484217A (en) | Cement foam foaming agent and preparation method thereof | |
| CN104531121A (en) | Foaming drainage agent resisting methanol, condensate oil and high salinity | |
| CN102965117B (en) | Foaming agent for earth pressure balance shield | |
| CN109111910A (en) | A kind of clean type air foam fracturing fluid | |
| CN106929023A (en) | The stable foam agent and preparation method and application of bad ground shield-tunneling construction | |
| AU742880B2 (en) | Foaming composition | |
| CN116445164B (en) | Foaming agent composition, foaming agent for shield, preparation method and application | |
| CN106433679A (en) | Acid-resistant shield foaming agent | |
| CN105331352B (en) | A kind of preparation method of seawater-based fracturing fluid and seawater-based fracturing fluid | |
| JP2003507604A (en) | Tunnel drilling method | |
| CN104496525B (en) | A kind of compound concrete air entraining agent, its preparation method and application thereof | |
| CN109054842A (en) | A kind of earth pressure balanced shield, EPBS sediment improvement foaming agent and preparation method thereof | |
| CN106630727B (en) | Alkali resistance shield foaming agent | |
| CN111088020B (en) | Method for discharging liquid and producing gas by adopting salt-resistant oil-resistant solid foam drainage agent composition | |
| CN111088009B (en) | Reinforced oil-resistant foam drainage agent composition, preparation method thereof and drainage and gas production method | |
| JP6632955B2 (en) | Bubble shield method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |