CN102093897A - Chemical sand solidification agent - Google Patents

Chemical sand solidification agent Download PDF

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Publication number
CN102093897A
CN102093897A CN2009101176876A CN200910117687A CN102093897A CN 102093897 A CN102093897 A CN 102093897A CN 2009101176876 A CN2009101176876 A CN 2009101176876A CN 200910117687 A CN200910117687 A CN 200910117687A CN 102093897 A CN102093897 A CN 102093897A
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sand
performed polymer
chemical sand
gram
organo
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CN102093897B (en
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王来来
赵水侠
曲建军
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Lanzhou Institute of Chemical Physics LICP of CAS
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Lanzhou Institute of Chemical Physics LICP of CAS
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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
    • C04B26/00—Compositions of mortars, concrete or artificial stone, containing only organic binders, e.g. polymer or resin concrete
    • C04B26/30—Compounds having one or more carbon-to-metal or carbon-to-silicon linkages ; Other silicon-containing organic compounds; Boron-organic compounds
    • C04B26/32—Compounds having one or more carbon-to-metal or carbon-to-silicon linkages ; Other silicon-containing organic compounds; Boron-organic compounds containing silicon

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
  • Processes Of Treating Macromolecular Substances (AREA)

Abstract

The invention discloses a chemical sand solidification agent, which consists of an organic polymer and an organic siloxane prepolymer. After being mixed with sand, the chemical sand solidification agent can be gelatinized and solidified at low temperature. After being solidified, the chemical sand solidification agent has higher shear strength and is water-insoluble.

Description

A kind of chemical sand-fixing materials
Technical field
The present invention relates to a kind of chemical sand-fixing materials.
Background technology
Present existing sand fixing technology is divided into that physics fixes the sand, sand consolidation with biologic, chemical sand-fixing.Already used physics sand-fixation method has: water diversion for sand removal is built up fields and the straw checkerboard barrier sand-protecting barrier.Sand consolidation with biologic is the artificial vegetation, and protection or recovery natural vegetation are fixed the sand, and up-to-date sand consolidation with biologic mode is that artificial algae skinning fixes the sand.The chemical sand-fixing quick construction is convenient, and it and sand consolidation with biologic combine and can improve the surviving rate of plant greatly.From the fifties in last century, the chemical sand-fixing technology is rapidly developed.Up to the present, develop the chemical sand-fixing materials that kind more than 100 has good result, but all do not obtained large scale application.Chemical sand-fixing materials can be divided into inorganic gel sand control material and organic gelling sand control material two big classes by feedstock property.Inorganic coagulation material comprises the hydraulicity and air-setting; The organic gel gel material, as crude oil, high molecular polymer such as polyvinyl alcohol etc., existing chemical sand-fixing materials does not obtain big area and promotes, and its reason is to satisfy following six aspects fully:
1. soak husky ability: Xiang Shati infiltration 0.5～2cm;
2. chemical sand-fixing materials dipping back forms the ability height of cohesion type structure: thixotropy, creep properties, plasticity-height, suitable soundness;
3. fastness to efflorescence: the bonding course in 1～3 year, in the northern territory, 1～2 year is just enough;
4. there are not toxicity and weeding;
5. manufacturability should be convenient to construction;
6. the economy of chemical sand-fixing materials and validity.
The organopolysiloxane polymer has chemistry, physics and the dielectric properties of many excellences, has become broad-spectrum material.Chlorosilane, organoalkoxysilane etc. are the raw materials of synthetic organopolysiloxane.Organoalkoxysilane is that the synthetic organopolysiloxane of raw material is than using chlorosilane to have certain advantage, for example hydrolysis rate is controlled, react relatively gentleness etc., its performed polymer at low temperatures can fast setting, the resin hardness height after the curing, heat-resisting, wear-resisting, radiation hardness, water-fast, moisture resistance, anti-atmospheric aging, not embrittlement of low temperature (50 ℃), transparency height, visible light transmissivity more than 90%, nontoxic.
United States Patent (USP) (US 4231917) is open, with organopolysiloxane and ethylenic unsaturation hydrocarbon monomer, as vinylbenzene, methyl methacrylate, trimethylammonium vinyl cyanide etc., at radical initiator, exist down as ditertiary butyl peroxide, Diisopropyl azodicarboxylate, benzoyl peroxide etc., carry out crosslinking reaction, add inorganic filler, as silicate cement, ferric oxide, carbon black etc., prepared a kind of adhesive material that is applicable to geothermal well and dark oil well; United States Patent (USP) (US 7312296 B2) discloses the organopolysiloxane pressure sensitive adhesive that a kind of end has hydroxyl, is used for bonding semiconductor material; Domestic patent of invention (CN 1100838C) discloses a kind of organosilicon modified polyurethane paint, this coating is made up of base polyurethane prepolymer for use as, aminoalkylsilane or siloxanes, organopolysiloxane tackifier, hydrogen-containing siloxane, organic solvent etc., this coating can be at 150～200 ℃ of following film-formings, to without any surface-treated silicon rubber good cementability being arranged in the presence of chloroplatinic acid catalyst; Domestic patent of invention (CN101492308A) is open to be gelling material with water glass, and aluminum trichloride solution is a solid solution, and sand is an aggregate, prepares a kind of sand brick.
Summary of the invention
The present invention aims to provide a kind of chemical sand-fixing materials.
A kind of chemical sand-fixing materials is made up of organic polymer and organo-siloxane performed polymer, and organic polymer and organo-siloxane performed polymer mass ratio are 1: 100～1: 2; Wherein organic polymer is selected from a kind of in polyvinyl alcohol, polyacrylic acid, polyacrylic ester, the starch; Wherein the structural formula of organo-siloxane performed polymer is:
Figure G2009101176876D00021
T is a kind of of methyl, ethyl, phenyl in the formula, and what Z was a methoxyl group to the heptan oxygen base is a kind of, and n is 1 to 10 integer.
Chemical sand-fixing materials can solidify by fast gelation under the low temperature with after sand mixes, and the material after the curing has higher shearing resistance, and water insoluble.
Chemical sand-fixing materials of the present invention, the synthetic employing of organo-siloxane performed polymer has method now, is raw material with the organosilicone compounds, in the presence of sulfuric acid catalyst, through hydrolysis and condensation reaction, synthetic performed polymer.The structural formula of organosilicone compounds is T mSiZ (4-m), T is a kind of in methyl, ethyl, the phenyl in the formula, and what Z was a methoxyl group to the heptan oxygen base is a kind of, and m is the integer of 0-3.
The using method of chemical sand-fixing materials of the present invention: taking by weighing organic polymer and organo-siloxane performed polymer respectively, is solvent with mixture pure or alcohol and water, after the dissolving, obtains the chemical sand-fixing agent solution fully; This solution and sand mix, the moulding of normal pressure dip mold, and in room temperature or be higher than under the room temperature, the organo-siloxane performed polymer carries out crosslinking reaction, synthetic cancellated organopolysiloxane polymer.Wherein the mass ratio of organo-siloxane performed polymer and solvent is 1: 1～1: 12.
Chemical sand-fixing materials of the present invention can use in the desert, and is typically along the line such as Qinghai-Tibet Railway and motorway.In order to set up the checking the wind and fixing the shifting sand wall fast and easily, can directly use sand to be raw material, adopt chemical sand-fixing agent solution of the present invention, behind the gelling curing reaction, the preparation bulk material, this material not only has higher shearing resistance, and has water resisting property preferably.
Embodiment 1:
18.95 gram (0.11mol) Union carbide A-162,4.87 gram (0.27mol) distilled water join in 100 milliliters of three-necked flasks after 0.02 gram concentrated hydrochloric acid mixes, and three-necked flask is equipped with thermometer, reflux condensing tube, and magneton stirs.Under 75 ℃ condition, back flow reaction 2 hours.Synthetic performed polymer I obtains white thick liquid 9.2 grams, and MS (1.53 * 10 8Ev) m/e (int (%): 447.5 (8); 417.6 (20); 387.7 (48); 357.6 (14); 283.5 (100); 253.5 (55).
Performed polymer I is dissolved in the ethanol, obtains 40 ml solns.0.1 gram PVAC polyvinylalcohol 20-88 is dissolved in 40 ml waters.Sand with each 10 milliliters of these two kinds of solution and 98 grams mixes moulded section respectively.After 110 ℃ of baking and curing, apply 50kPa respectively, 100kPa, 150kPa, 200kPa is level Four normal stress altogether, and trying to achieve cohesion by the trial curve of normal stress～shearing stress is 168.4kPa (the normal stress value when value of shearing is zero is exactly a cohesion), and internal friction angle is 43.7 °.
Embodiment 2:
17.82 gram (0.1mol) Union carbide A-162 adds in the dropping funnel after the mixed in hydrochloric acid of 4.52 gram (0.25mol) distilled water and 40 microlitres 12%.When temperature is 44 ℃, begin to drip the mixture of acid and water, dropwise in 5 minutes.Be warmed up to 75 ℃, back flow reaction 4 hours.With the post reaction mixture extracted with diethyl ether, be washed to neutrality.Organic phase is spent the night with anhydrous sodium sulfate drying, filter, rotary evaporation has synthesized performed polymer II, obtains white thick liquid 8.71 grams.
8.71 gram performed polymer II is dissolved in a certain amount of ethanol, obtains 40 ml solns.0.2 gram PVAC polyvinylalcohol 20-88 is dissolved in 40 ml waters.Sand with each 10 milliliters of these two kinds of solution and 98 grams mixes respectively, and moulded section has prepared 4 samples.At 110 ℃ of dry solidifications.Trying to achieve cohesion by the trial curve of normal stress～shearing stress is 81.2kPa, and internal friction angle is 22.0 °.
Embodiment 3:
According to the synthetic method of embodiment 2, synthesizing organo-silicon oxygen alkane performed polymer is got organo-siloxane performed polymer and polyvinyl alcohol according to different ratios, and prepares husky sample according to the method for embodiment 2.Test the compression strength value of husky sample,, try to achieve cohesion and internal friction angle respectively by the trial curve of normal stress～shearing stress.The shear strength test result is as shown in table 1.
The shear strength test result of the different proportioning husky samples that sand-fixation agent is done of table 1
Embodiment 4:
According to embodiment 1 synthetic performed polymer I, obtain white thick liquid 9.0 grams, MS (1.53 * 10 8Ev) m/e (int (%): 447.5 (8); 417.6 (20); 387.7 (48); 357.6 (14); 283.5 (100); 253.5 (55).
Performed polymer I is dissolved in the ethanol, obtains 40 ml solns.0.1 the gram polyacrylic acid is dissolved in 40 ml waters.Sand with each 10 milliliters of these two kinds of solution and 98 grams mixes moulded section respectively.After 70 ℃ of baking and curing, trying to achieve cohesion by the trial curve of normal stress～shearing stress is 188.4kPa, and internal friction angle is 44.7 °.
Embodiment 5:
According to embodiment 1 synthetic performed polymer I, obtain white thick liquid 8.9 grams, MS (1.53 * 10 8Ev) m/e (int (%): 447.5 (8); 417.6 (20); 387.7 (48); 357.6 (14); 283.5 (100); 253.5 (55).
Performed polymer I is dissolved in the ethanol, obtains 40 ml solns.0.1 the gram polyacrylic ester is dissolved in 40 ml waters.Sand with each 10 milliliters of these two kinds of solution and 98 grams mixes moulded section respectively.After 50 ℃ of baking and curing, trying to achieve cohesion by the trial curve of normal stress～shearing stress is 158.0kPa, and internal friction angle is 40.5 °.
Embodiment 6:
According to embodiment 1 synthetic performed polymer I, obtain white thick liquid 9.1 grams, MS (1.53 * 10 8Ev) m/e (int (%): 447.5 (8); 417.6 (20); 387.7 (48); 357.6 (14); 283.5 (100); 253.5 (55).
Performed polymer I is dissolved in the ethanol, obtains 40 ml solns.In 20 ml waters and 20 milliliters of alcohol mixed solvents, add 0.1 gram starch, stir.Sand with each 10 milliliters of these two kinds of solution and 98 grams mixes moulded section respectively.After 80 ℃ of baking and curing, trying to achieve cohesion by the trial curve of normal stress～shearing stress is 200.0kPa, and internal friction angle is 49.5 °.
Comparative Examples:
Be dissolved in 20 ml waters 2 gram PVAC polyvinylalcohol 20-88 and 98 grains of sand mixing that restrain, moulded section after 110 ℃ of baking and curing, is made cementing material.This cementing material is put in the beaker that fills 200 ml tap waters.With the polyvinyl alcohol is the cementing material that tackiness agent is made, and dissolving rapidly becomes loose sand in several minutes.
Embodiment 7:
19.20 gram (0.1mol) ethyl triethoxysilane adds in the dropping funnel after the mixed in hydrochloric acid of 5.4 gram (0.3mol) distilled water and 40 microlitres 12%.When temperature is 44 ℃, begin to drip the mixture of acid and water, dropwise in 5 minutes.Be warmed up to 80 ℃, back flow reaction 4 hours.Post reaction mixture adopts the treating processes identical with embodiment 2, has synthesized performed polymer III, obtains white thick liquid 8.9 and restrains.
Be dissolved in the ethanol as embodiment 1,8.9 gram performed polymer III, obtain 40 ml solns.0.2 gram PVAC polyvinylalcohol 20-88 is dissolved in 40 ml waters.Sand with each 10 milliliters of these two kinds of solution and 98 grams mixes respectively, and moulded section has prepared 4 samples.At 110 ℃ of dry solidifications.Trying to achieve cohesion by the trial curve of normal stress～shearing stress is 60.2kPa, and internal friction angle is 20.9 °.
Embodiment 8:
24.00 gram (0.1mol) phenyl triethoxysilane adds in the dropping funnel after the mixed in hydrochloric acid of 5.4 gram (0.3mol) distilled water and 40 microlitres 12%.When temperature is 44 ℃, begin to drip the mixture of acid and water, dropwise in 5 minutes.Be warmed up to 80 ℃, back flow reaction 4 hours.Post reaction mixture adopts the treating processes identical with embodiment 2, has synthesized performed polymer IV, obtains white thick liquid 9.8 and restrains.
Be dissolved in the ethanol as embodiment 1,9.8 gram performed polymer IV, obtain 40 ml solns.0.2 gram PVAC polyvinylalcohol 20-88 is dissolved in 40 ml waters.Sand with each 10 milliliters of these two kinds of solution and 98 grams mixes respectively, and moulded section has prepared 4 samples.At 110 ℃ of dry solidifications.Trying to achieve cohesion by the trial curve of normal stress～shearing stress is 40.1kPa, and internal friction angle is 19.9 °.

Claims (1)

1. a chemical sand-fixing materials is made up of organic polymer and organo-siloxane performed polymer, and organic polymer and organo-siloxane performed polymer mass ratio are 1: 100～1: 2; Wherein organic polymer is selected from a kind of in polyvinyl alcohol, polyacrylic acid, polyacrylic ester, the starch; Wherein the structural formula of organo-siloxane performed polymer is:
Figure F2009101176876C00011
T is a kind of of methyl, ethyl, phenyl in the formula, and what Z was a methoxyl group to the heptan oxygen base is a kind of, and n is 1 to 10 integer.
CN 200910117687 2009-12-09 2009-12-09 Chemical sand solidification agent Expired - Fee Related CN102093897B (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113861988A (en) * 2021-10-26 2021-12-31 华南理工大学 Hyperbranched epoxy oligosiloxane sand-fixing material and preparation method and application thereof

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101307235A (en) * 2008-02-15 2008-11-19 北京中汇信联技术发展有限公司 Wind proof and sand-fixing dedusting agent

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101307235A (en) * 2008-02-15 2008-11-19 北京中汇信联技术发展有限公司 Wind proof and sand-fixing dedusting agent

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113861988A (en) * 2021-10-26 2021-12-31 华南理工大学 Hyperbranched epoxy oligosiloxane sand-fixing material and preparation method and application thereof

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