CN109468135A - A kind of silica sol modified cellulose-based binder, environment protection water storage type fix the sand plate and preparation method thereof - Google Patents
A kind of silica sol modified cellulose-based binder, environment protection water storage type fix the sand plate and preparation method thereof Download PDFInfo
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- CN109468135A CN109468135A CN201811353228.3A CN201811353228A CN109468135A CN 109468135 A CN109468135 A CN 109468135A CN 201811353228 A CN201811353228 A CN 201811353228A CN 109468135 A CN109468135 A CN 109468135A
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- silica sol
- modified cellulose
- based binder
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- 239000004576 sand Substances 0.000 title claims abstract description 49
- 239000011230 binding agent Substances 0.000 title claims abstract description 28
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 28
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 title claims abstract description 27
- 239000001913 cellulose Substances 0.000 title claims abstract description 26
- 229920002678 cellulose Polymers 0.000 title claims abstract description 26
- 238000002360 preparation method Methods 0.000 title claims abstract description 19
- 238000003860 storage Methods 0.000 title claims abstract description 12
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 66
- 239000010902 straw Substances 0.000 claims abstract description 19
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 14
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims abstract description 13
- 229910017604 nitric acid Inorganic materials 0.000 claims abstract description 13
- ZMANZCXQSJIPKH-UHFFFAOYSA-N Triethylamine Chemical compound CCN(CC)CC ZMANZCXQSJIPKH-UHFFFAOYSA-N 0.000 claims abstract description 12
- 229960000935 dehydrated alcohol Drugs 0.000 claims abstract description 11
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 10
- 239000011259 mixed solution Substances 0.000 claims abstract description 9
- 239000000843 powder Substances 0.000 claims abstract description 9
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 9
- 239000002689 soil Substances 0.000 claims abstract description 9
- 238000001816 cooling Methods 0.000 claims abstract description 8
- 235000012239 silicon dioxide Nutrition 0.000 claims abstract description 8
- PIICEJLVQHRZGT-UHFFFAOYSA-N Ethylenediamine Chemical compound NCCN PIICEJLVQHRZGT-UHFFFAOYSA-N 0.000 claims abstract description 7
- 239000003337 fertilizer Substances 0.000 claims abstract description 7
- 238000000748 compression moulding Methods 0.000 claims abstract description 4
- 238000003756 stirring Methods 0.000 claims abstract description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M sodium hydroxide Inorganic materials [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 16
- 239000000203 mixture Substances 0.000 claims description 15
- 241000209140 Triticum Species 0.000 claims description 8
- 235000021307 Triticum Nutrition 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 8
- 238000007873 sieving Methods 0.000 claims description 7
- 241000124033 Salix Species 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 5
- 239000000243 solution Substances 0.000 claims description 5
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims description 4
- 239000000440 bentonite Substances 0.000 claims description 4
- 229910000278 bentonite Inorganic materials 0.000 claims description 4
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims description 4
- 239000004202 carbamide Substances 0.000 claims description 4
- ZZUFCTLCJUWOSV-UHFFFAOYSA-N furosemide Chemical group C1=C(Cl)C(S(=O)(=O)N)=CC(C(O)=O)=C1NCC1=CC=CO1 ZZUFCTLCJUWOSV-UHFFFAOYSA-N 0.000 claims description 4
- 241000196324 Embryophyta Species 0.000 claims description 3
- 235000007164 Oryza sativa Nutrition 0.000 claims description 3
- 238000000498 ball milling Methods 0.000 claims description 3
- 235000013339 cereals Nutrition 0.000 claims description 3
- 238000000465 moulding Methods 0.000 claims description 3
- 235000009566 rice Nutrition 0.000 claims description 3
- 239000002344 surface layer Substances 0.000 claims description 3
- 235000013311 vegetables Nutrition 0.000 claims description 2
- 240000007594 Oryza sativa Species 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 8
- 231100000614 poison Toxicity 0.000 abstract description 2
- 238000004945 emulsification Methods 0.000 abstract 1
- 230000007096 poisonous effect Effects 0.000 abstract 1
- 230000004888 barrier function Effects 0.000 description 8
- 239000000047 product Substances 0.000 description 8
- 238000005259 measurement Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 2
- QJZYHAIUNVAGQP-UHFFFAOYSA-N 3-nitrobicyclo[2.2.1]hept-5-ene-2,3-dicarboxylic acid Chemical compound C1C2C=CC1C(C(=O)O)C2(C(O)=O)[N+]([O-])=O QJZYHAIUNVAGQP-UHFFFAOYSA-N 0.000 description 2
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 description 2
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 2
- 229920002488 Hemicellulose Polymers 0.000 description 2
- 241000209094 Oryza Species 0.000 description 2
- 239000002202 Polyethylene glycol Substances 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000008367 deionised water Substances 0.000 description 2
- 229910021641 deionized water Inorganic materials 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 239000004021 humic acid Substances 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 238000011089 mechanical engineering Methods 0.000 description 2
- 238000006386 neutralization reaction Methods 0.000 description 2
- 229920001223 polyethylene glycol Polymers 0.000 description 2
- USHAGKDGDHPEEY-UHFFFAOYSA-L potassium persulfate Chemical compound [K+].[K+].[O-]S(=O)(=O)OOS([O-])(=O)=O USHAGKDGDHPEEY-UHFFFAOYSA-L 0.000 description 2
- 235000019394 potassium persulphate Nutrition 0.000 description 2
- 238000004513 sizing Methods 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 235000014676 Phragmites communis Nutrition 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- 241000220317 Rosa Species 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 238000009933 burial Methods 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 235000011187 glycerol Nutrition 0.000 description 1
- 230000012010 growth Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 229910000402 monopotassium phosphate Inorganic materials 0.000 description 1
- 235000019796 monopotassium phosphate Nutrition 0.000 description 1
- PJNZPQUBCPKICU-UHFFFAOYSA-N phosphoric acid;potassium Chemical compound [K].OP(O)(O)=O PJNZPQUBCPKICU-UHFFFAOYSA-N 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 230000008635 plant growth Effects 0.000 description 1
- 239000002574 poison Substances 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 230000004083 survival effect 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
-
- 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
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
- E01F7/00—Devices affording protection against snow, sand drifts, side-wind effects, snowslides, avalanches or falling rocks; Anti-dazzle arrangements ; Sight-screens for roads, e.g. to mask accident site
- E01F7/02—Snow fences or similar devices, e.g. devices affording protection against sand drifts or side-wind effects
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Soil Sciences (AREA)
- Structural Engineering (AREA)
- Civil Engineering (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Architecture (AREA)
- Inorganic Chemistry (AREA)
- Agronomy & Crop Science (AREA)
- Environmental & Geological Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- General Engineering & Computer Science (AREA)
- Fertilizers (AREA)
Abstract
The invention belongs to desert treatment field, a kind of silica sol modified cellulose-based binder is disclosed, environment protection water storage type fixes the sand plate and preparation method thereof.It takes stalk to be dried, pulverizes and sieves；Gained straw powder is infiltrated and boiled in 2 ~ 6 wt% aqueous slkalis, concentrated nitric acid is added after taking out cooling and the mixed solution of dehydrated alcohol carries out acidolysis, is then washed with water to neutrality, is gelatinized later；Silicon dioxide gel is added into gelatinization product, 0.5 ~ 1.0 h is reacted in control at 2.94 ~ 9.81 Mpa, 40 ~ 60 DEG C, and triethylamine is added and reacts 1 ~ 2 h, adds 4 ~ 8 h of reacting ethylenediamine, adds water and stirs emulsification to get silica sol modified cellulose-based binder.By inorganic soil, water-retaining agent, fertilizer and silica sol modified cellulose-based binder, it is uniformly mixed, compression moulding is put into drought-enduring plant seed to get the plate that fixes the sand.The silica sol modified cellulose-based binder of the present invention is inventor's independent research, and bond effect is good, environment-protecting and non-poisonous；Fix the sand plate intensity of obtained environment protection water storage type is high, has the good ability of fixing the sand.
Description
Technical field
The invention belongs to desert treatment technical fields, and in particular to a kind of silica sol modified cellulose-based binder, ring
Water storage type is protected to fix the sand plate and preparation method thereof.
Background technique
There is 2/3rds national influence by desertification of land in the whole world at present, and a quarter of the land gross area is waste
Desertization soil, up to 36,000,000 km2, direct threat of about 1/6th population in the world by desertification.Although various countries take
Desertification is administered in various measures, but the ccd area in the whole world is still with 50000 ~ 70000m2/ year is at a high speed
Increase.
The method for administering desertification of land at present mainly has mechanical engineering sand fixing technology, vegetative sand control technology and chemical sand-fixing
Technology.Mechanical engineering advantage of fixing the sand is not limited by material, can large-area applications, disadvantage: it protects height and the time limit to have
Limit is easy to be buried by drift sand.Vegetative sand control advantage is environmental-friendly, does not pollute pressure, disadvantage: the limitation of climate condition,
Suitable for plant type is rare and survival rate is low, and growth cycle is long.Chemical sand-fixing mainly sprays chemical reagent shape on drift sand surface
There is some strength at one layer, dust storm deflation can be prevented, the bonding course of lower layer's moisture can be kept to reach sand-fixing effect again
A kind of method, disadvantage: cost is slightly higher, should not be widely applied.
During administering desertification of land, the straw checkerboard barrier sand-protecting barrier that rose in recent years because its have the effect of it is certain and low
Cost has obtained the popularization of large area.Straw checkerboard barrier sand-protecting barrier is mainly made of materials such as wheat straw, reed, straw.Its principle be
The surface for flowing sand bed forms one of windbreak, so as to cutting down wind erosion, and has the effect of retention rainwater concurrently, improves sand dune
Moisture content promotes the growth of plant.But straw checkerboard barrier sand-protecting barrier has, and service life is short, water holding capacity is poor, easily scarce by dust storm burial etc.
Point, this greatly limits the applications of straw checkerboard barrier sand-protecting barrier.Therefore, the water storage type that a kind of service life is high, water holding capacity is strong is studied
The plate that fixes the sand is particularly important.
Summary of the invention
The purpose of the present invention is to provide a kind of silica sol modified cellulose-based binder, environment protection water storage type fix the sand plate and its
Preparation method.
To achieve the above object, the technical solution adopted by the present invention is as follows:
A kind of preparation method of silica sol modified cellulose-based binder, comprising the following steps:
S1, it takes stalk to be dried, and is crushed, is sieved；
S2, straw powder obtained by S1 is infiltrated and is boiled in 2 ~ 6 wt% aqueous slkalis, concentrated nitric acid and anhydrous second is added after taking out cooling
The mixed solution of alcohol carries out acidolysis, is then washed with water to neutrality, is later gelatinized it in microwave reactor；Wherein, with matter
Amount is than counting, straw powder: mixed solution=1 of concentrated nitric acid and dehydrated alcohol: (5 ~ 15), concentrated nitric acid: dehydrated alcohol=(15 ~ 30):
100；
S3, silicon dioxide gel is added into gelatinization product obtained by S2, control is reacted at 2.94 ~ 9.81 Mpa, 40 ~ 60 DEG C
Triethylamine is added later and reacts 1 ~ 2 h, adds 4 ~ 8 h of reacting ethylenediamine, water is added to be emulsified under stiring by 0.5 ~ 1.0 h,
Up to product；Wherein, by quality ratio, it is gelatinized product: silicon dioxide gel: second triamine: ethylenediamine: water=(9.0 ~ 11.5):
(1.0 ~ 2.0): (0.5 ~ 3.0): (0.25 ~ 1.5): (0.5 ~ 3.0).
Preferably, in S1, the stalk is wheat stalk or rice straw, dry 10 ~ 30 min at 20 ~ 40 DEG C, 30 ~
The sieving of 60 mesh sieve.
Preferably, in S2, the lye be NaOH solution, boil 0.5 ~ 2 h, 1.5 ~ 3.5 h of acidolysis, power be 500 ~
5 ~ 7 min are gelatinized in the microwave reactor of 700 W.
Preferably, in S3, the average grain diameter of silicon dioxide gel is 45 ~ 75 nm, and stirring rate is 300 ~ 700 rpm.
A kind of silica sol modified cellulose-based binder prepared using aforementioned preparation process.
A method of environment protection water storage type, which is prepared, using the silica sol modified cellulose-based binder fixes the sand plate, including with
Lower step:
Inorganic soil, water-retaining agent and fertilizer are uniformly mixed, are sieved after ball milling by the first step, obtain mixture 1；Wherein, with mass ratio
Meter, inorganic soil: water-retaining agent: fertilizer=(0.5 ~ 1.5): (2 ~ 5): (0.2 ~ 0.5)；
Stalk is cut into the short block of 2 ~ 6 cm by second step, is uniformly mixed with mixture 1, and silica sol modified cellulose is added later
Based binder remixes uniformly, obtains mixture 2；Wherein, by quality ratio, mixture 1: stalk block: silica sol modified cellulose
Based binder=(0.1 ~ 1.5): (1 ~ 2): (1 ~ 3.5)；
Third step, using hot press in a mold by 2 compression moulding plate of mixture, after molding is cooling, it is unseasoned before in plate
The side that side that the length of material and thickness are constituted or width and thickness are constituted is put into resistance to far from the position within the 1cm of surface layer
Non-irrigated vegetable seeds is to get the plate that fixes the sand.
Preferably, in the first step, the inorganic soil is bentonite, and the fertilizer is urea, the sieving of 500 ~ 700 mesh sieve.
Preferably, in second step, the stalk is wheat stalk or rice straw.
Preferably, in third step, the mold is square groove, and the specification of mold is long * wide * thickness=(1 ~ 2) m * (1 ~ 2)
M*(2 ~ 5) cm, gained fix the sand plate density be 200 ~ 400 kg/m3。
Preferably, in third step, the drought-enduring plant is salix monogolica.
In the present invention, the commercially available acquisition of water-retaining agent, or obtained by prior art preparation.
Silica sol modified cellulose-based binder in the present invention is inventor's independent research, and bond effect is good, environmentally friendly nothing
Poison；Fix the sand plate intensity of obtained environment protection water storage type is high, has the good ability of fixing the sand；Aqueous silica sol based binder is protected
The introducing of aqua and inorganic soil make environment protection water storage type fix the sand plate meet water expand rapidly, make it have good water holding capacity；And it is right
Environment provides a kind of new method without any injury, for the improvement of global desertification of land.
Detailed description of the invention
Fig. 1: the structural schematic diagram for the plate that fixes the sand；
Fig. 2: the placement model figure of cross grid；
Wherein appended drawing reference are as follows: 1- fixes the sand plate, 2- salix monogolica seed, and a- fixes the sand the length of plate, and b- fixes the sand the width of plate, and c- fixes the sand plate
Thickness.
Specific embodiment
Below in conjunction with specific embodiment, the present invention will be further described.It should be understood that following embodiment is merely to illustrate this
The range of invention and is not intended to limit the present invention.
Embodiment 1
A kind of environment protection water storage type fixes the sand the preparation method of plate, includes the following steps:
Bentonite, water-retaining agent and urea are uniformly mixed by the first step, with 20 min of dry ball ball milling, use 600 mesh sieve
Sieving, obtains mixture 1；Wherein, by quality ratio, bentonite: water-retaining agent: urea=1: 2: 0.2；
Wheat stalk is cut into the short block that length is 2 cm, stalk block and mixture 1 is then mixed 30 by second step
Silica sol modified cellulose-based binder is added in min later, is stirred for 10 min, obtains mixture 2；Wherein, by quality ratio,
Mixture 1: stalk block: silica sol modified cellulose-based binder=1: 2: 2；
Third step, using hot press mold (mold is square slot, and the specification of mold is long * wide * thickness=1m * 1m*2cm)
Middle be density by 2 compression moulding of mixture is 200 ~ 400 kg/m3Plate, after molding is cooling, it is unseasoned before in plate
The side that length and thickness are constituted equably is put into salix monogolica seed (10/100 cm far from the position within the 1cm of surface layer2), i.e.,
Must fix the sand plate, as shown in Figure 1.
In the present embodiment, the water-retaining agent prepares as follows:
(1), it takes wheat stalk that it is dried 30 min at 40 DEG C, and is crushed with pulverizer, carried out using 40 mesh sieve
Sieving；
(2), straw powder obtained by (2) is infiltrated in 5 wt%NaOH solution and is boiled 0.5 h, remove most of hemicellulose
Element is added concentrated nitric acid (mass fraction is about 68%, similarly hereinafter) after taking out cooling and the mixed solution of dehydrated alcohol carries out 2 h of acidolysis,
It is washed out to neutrality, it is gelatinized 5 min in microwave reactor (power is 500 W) later；Wherein, by quality ratio,
Straw powder: mixed solution=1 of concentrated nitric acid and dehydrated alcohol: 10, concentrated nitric acid: dehydrated alcohol=25: 100；
(3), acrylic acid, acrylamide, polyethylene glycol 2000, the phosphorus of degree of neutralization 80% are sequentially added in the gelatinization product obtained by (2)
Acid dihydride potassium, humic acid are uniformly mixed, and are added potassium peroxydisulfate and glycerine, are stirred evenly；Wherein, by quality ratio, it is gelatinized
Product: the acrylic acid of degree of neutralization 80%: acrylamide: polyethylene glycol 2000: potassium dihydrogen phosphate: humic acid: potassium peroxydisulfate: the third three
Alcohol=5: 2: 1: 0.05: 0.02: 0.04: 0.16: 0.04；
(4), system obtained by (3) is placed on rapidly in microwave reactor (power 500W) and reacts 30 min, after reaction
Product is dry in 70 DEG C of drying boxes, until sample dries out firmly；
(5), sample obtained dry ball is crushed into 30 min and crosses 500 meshes to get required water-retaining agent is arrived.
In the present embodiment, the silica sol modified cellulose-based binder prepares as follows:
S1, it takes wheat stalk that it is dried 30 min at 40 DEG C, and is crushed with pulverizer, carried out using 40 mesh sieve
Sieving；
S2, straw powder obtained by S1 is infiltrated in 5 wt%NaOH solution and is boiled 0.5 h, remove most of hemicellulose,
Take out it is cooling after concentrated nitric acid is added and the mixed solution of dehydrated alcohol carries out 2 h of acidolysis, be washed out to neutrality, later by its
5 min are gelatinized in microwave reactor (power is 500 W)；Wherein, by quality ratio, straw powder: concentrated nitric acid and dehydrated alcohol
Mixed solution=1: 10, concentrated nitric acid: dehydrated alcohol=25: 100；
S3, silicon dioxide gel (average grain diameter is 50 nm) is added into gelatinization product obtained by S2, controls in 6 Mpa, 50 DEG C
Triethylamine is added later and is neutralized into 2 h of salt, adds ethylenediamine and carries out 5 h of chain extending reaction, deionized water is added to exist by 1 h of lower reaction
It is emulsified under high-speed stirred (500 rpm of revolving speed) to get product；Wherein, by quality ratio, be gelatinized product: silica is molten
Glue: second triamine: ethylenediamine: deionized water=9: 1: 0.5: 0.25: 0.5.
The measurement of binder tensile shear strength
Measure object: silica sol modified cellulose-based binder manufactured in the present embodiment.
Measuring method: referring to national standard GB/T7124-2008, to silica sol modified cellulose-based binder tensile shear strength
Measurement.
Raw material: adhesive is silica sol modified cellulose-based binder manufactured in the present embodiment, with plank (with a thickness of 2.0
± 0.2 mm) it is plate.
Technological parameter: sizing area is 3.25+0.25cm2, single side sizing, using the pressure of 0.5 MPa to plate progress
Pressurization, 3 hours dry at 120 DEG C of air dry oven, electronic universal tester tensile speed are as follows: 5mm/min.
Measurement result: the maximum tension shear strength being able to bear is the average value of 1.25Mpa(measurement result three times), table
The bond effect of bright silica sol modified cellulose-based binder prepared by the present invention is preferable.
It fixes the sand the water-retaining sand-stabilizing effect of plate
The plate manufactured in the present embodiment that fixes the sand (long * wide * thickness=1m * 1m*2cm) is divided equally into 5 equal portions, width direction by length direction
Respectively 2 equal parts cross to it, and the plate that fixes the sand is decomposed into the 50cm(wide of rule) * 20cm(long) * 2cm(thickness) shape, by ten
In the simulation sand dune of the form arrangement 1m*1m*1cm of word grid, method for arranging are as follows: excavate the transverse direction that several stripe pitch are 20cm
Ditch excavates longitudinal ditch that several stripe pitch are 20cm, every bar ditch ditch depth 35cm perpendicular to lateral ditch again；It will submerge in water 2h's
Plate fix the sand along the ditch line of excavation, the one side of width direction downwards, with salix monogolica seed is uniformly fitly laid with upward, makes
Strength pushes, and the plate that will fix the sand is inserted into lateral ditch/longitudinal direction ditch, makes the plate exposed Shamian Island 15cm of exposing that fixes the sand, after the completion of laying, such as Fig. 2 institute.
First to the region spray water in the region and the not set plate that fixes the sand that are disposed with the plate that fixes the sand, reach its sand humidity
25%, sand dune will be simulated later and is placed in 35 DEG C of climatic chamber the simulated experiment for carrying out simulating water-retaining sand-stabilizing, and under Shamian Island
Tensiometer is used at 0.35m, and two region humidity were measured after two days time, are disposed with the sand in the region for the plate that fixes the sand
Interior humidity is 13.2%, and the sand interior humidity in the region of the not set plate that fixes the sand be 5.0%, from experimental result it can be seen that
The present invention fixes the sand plate with apparent water-retaining sand-stabilizing effect.
Claims (10)
1. a kind of preparation method of silica sol modified cellulose-based binder, which comprises the following steps:
S1, it takes stalk to be dried, and is crushed, is sieved；
S2, straw powder obtained by S1 is infiltrated and is boiled in 2 ~ 6 wt% aqueous slkalis, concentrated nitric acid and anhydrous second is added after taking out cooling
The mixed solution of alcohol carries out acidolysis, is then washed with water to neutrality, is later gelatinized it in microwave reactor；Wherein, with matter
Amount is than counting, straw powder: mixed solution=1 of concentrated nitric acid and dehydrated alcohol: (5 ~ 15), concentrated nitric acid: dehydrated alcohol=(15 ~ 30):
100；
S3, silicon dioxide gel is added into gelatinization product obtained by S2, control is reacted at 2.94 ~ 9.81 Mpa, 40 ~ 60 DEG C
Triethylamine is added later and reacts 1 ~ 2 h, adds 4 ~ 8 h of reacting ethylenediamine, water is added to be emulsified under stiring by 0.5 ~ 1.0 h,
Up to product；Wherein, by quality ratio, it is gelatinized product: silicon dioxide gel: second triamine: ethylenediamine: water=(9.0 ~ 11.5):
(1.0 ~ 2.0): (0.5 ~ 3.0): (0.25 ~ 1.5): (0.5 ~ 3.0).
2. preparation method as described in claim 1, it is characterised in that: in S1, the stalk be wheat stalk or rice straw,
Dry 10 ~ 30 min at 20 ~ 40 DEG C, the sieving of 30 ~ 60 mesh sieve.
3. preparation method as described in claim 1, it is characterised in that: in S2, the lye is NaOH solution, boils 0.5 ~ 2
H, 1.5 ~ 3.5 h of acidolysis are gelatinized 5 ~ 7 min in the microwave reactor that power is 500 ~ 700 W.
4. preparation method as described in claim 1, it is characterised in that: in S3, the average grain diameter of silicon dioxide gel is 45 ~ 75
Nm, stirring rate are 300 ~ 700 rpm.
5. a kind of silica sol modified cellulose-based binder using such as any preparation method preparation of claim 1 ~ 4.
6. a kind of environment protection water storage type is prepared using silica sol modified cellulose-based binder as claimed in claim 5 fix the sand the side of plate
Method, which comprises the following steps:
Inorganic soil, water-retaining agent and fertilizer are uniformly mixed, are sieved after ball milling by the first step, obtain mixture 1；Wherein, with mass ratio
Meter, inorganic soil: water-retaining agent: fertilizer=(0.5 ~ 1.5): (2 ~ 5): (0.2 ~ 0.5)；
Stalk is cut into the short block of 2 ~ 6 cm by second step, is uniformly mixed with mixture 1, and silica sol modified cellulose is added later
Based binder remixes uniformly, obtains mixture 2；Wherein, by quality ratio, mixture 1: stalk block: silica sol modified cellulose
Based binder=(0.1 ~ 1.5): (1 ~ 2): (1 ~ 3.5)；
Third step, using hot press in a mold by 2 compression moulding plate of mixture, after molding is cooling, it is unseasoned before in plate
The side that side that the length of material and thickness are constituted or width and thickness are constituted is put into resistance to far from the position within the 1cm of surface layer
Non-irrigated vegetable seeds is to get the plate that fixes the sand.
7. preparation method as claimed in claim 6, it is characterised in that: in the first step, the inorganic soil is bentonite, the fertilizer
Material is urea, the sieving of 500 ~ 700 mesh sieve.
8. preparation method as claimed in claim 6, it is characterised in that: in second step, the stalk is wheat stalk or straw
Stalk.
9. preparation method as claimed in claim 6, it is characterised in that: in third step, the mold is square groove, the rule of mold
Lattice be long * wide * thickness=(1 ~ 2) m * (1 ~ 2) m*(2 ~ 5) cm, gained fix the sand plate density be 200 ~ 400 kg/m3。
10. preparation method as claimed in claim 6, it is characterised in that: in third step, the drought-enduring plant is salix monogolica.
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