CN101143956A - Low-cost high water absorption composite water-loss reducer and preparation method thereof - Google Patents
Low-cost high water absorption composite water-loss reducer and preparation method thereof Download PDFInfo
- Publication number
- CN101143956A CN101143956A CNA2006101045749A CN200610104574A CN101143956A CN 101143956 A CN101143956 A CN 101143956A CN A2006101045749 A CNA2006101045749 A CN A2006101045749A CN 200610104574 A CN200610104574 A CN 200610104574A CN 101143956 A CN101143956 A CN 101143956A
- Authority
- CN
- China
- Prior art keywords
- water
- attapulgite
- agent
- initiator
- wilkinite
- 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.)
- Pending
Links
Abstract
The invention relates to a composite water retaining agent with low cost and high water absorption and a method for preparing the same, wherein the raw material of the water retaining agent includes 100 parts by weight of acrylic acid, 20-80 parts by weight of attapulgite, 20-80 parts by weight of bentonite, 0.05-1.0 parts by weight of initiator, and 0.05-1.0 parts by weight of crosslinking agent. The absorption rate of the water retaining agent prepared according to the invention is 500-1200 in distilled water, and the absorption rate is 50-90 in 0.9 percent NaCl solution. Compared with pure polyacrylic acid water retaining agent, the composite water retaining agent can decrease 40 percent costs. The preparation technology of the invention is simple, the product has high water absorption and good reusability, and the invention also can be applicable for agriculture and forestry and other fields.
Description
Technical field
The present invention relates to a kind of low-cost high water absorption composite water-loss reducer and preparation method thereof.
Background technology
The water-holding agent that is applied to the agroforestry aspect is in actual application, and factors such as the pH value of the metal ion in the soil, water surrounding have remarkably influenced to its water-absorbing-retaining performance.The water-holding agent that has thousands of times of water-retaining capacities in the pure water only has the water-retaining capacity of tens times even several times in the geographic application process of high salinity, greatly reduce the practical value of water-holding agent.In addition, present business-like water-holding agent is on the high side, and this also is to hinder the critical problem of water-holding agent in the arid area large-area applications.Therefore, the agroforestry water-holding agent of development low cost, salt tolerant alkali and high suction, has great importance in application facet such as dry agricuture and ecology recovering environment for water-holding agent.
In recent years, along with the reach of science, organic/inorganic composite material has been subjected to the people's extensive concern, and the development of water-holding agent is no exception.In acrylic polymers, introduce inexpensive inorganic raw material, be characterized in that the inorganics of introducing not only can improve the salt tolerance of acrylic acid or the like water-holding agent, and can reduce cost greatly.Chinese patent CN1359974 adopts acrylamide and potassium acrylate copolymerization, and composite additive is kaolin and wilkinite, prepares high-hydroscopicity composite resin P (AM-KAA) KB.But its shortcoming is that inorganic additives is to be filled in the network structure of polymkeric substance in the compound resin, a little less than the gel-strength of the matrix material that its gel-strength obviously exists in the mode of graft copolymerization than mineral filler and organic monomer.Therefore, seek new copolymer composition and preparation method thereof, further reduce cost, be still one of main direction of present water-holding agent research and development.
Attapulgite belongs to the strong clay mineral of aqueous magnesia-aluminium silicate fibre, be all more special mineral of composition in the clay mineral, structure, form and physicochemical property, particularly it has certain salt tolerant alkalescence, and the preparation of it being introduced compound water retaining agent is just more meaningful.In order to prepare than high-gel strength and NEW TYPE OF COMPOSITE water-holding agent cheaply, we have synthesized the compound water-holding agent (CN1438256A of serial organic-inorganic with attapulgite as inorganic raw material and part neutral vinylformic acid or acrylic amide graft copolymerization, CN1590504A, CN1631970A, CN1699508A).The result shows: when attapulgite content is 30wt%, still can be present in the network of compound water retaining agent with polymerized form.This product was realized industrialization in 2004, classified as state key by departments such as the Department of Science and Technology in 2005 to promote product innovation, was considered to the upgraded product of water-holding agent.In order further to improve the gel-strength of compound water retaining agent, in the present invention we selected for use gelation preferably wilkinite synthesized novel polyacrylic acid/attapulgite/wilkinite compound water retaining agent with part neutral vinylformic acid and attapulgite graft copolymerization.
Summary of the invention
Purpose of the present invention just provides a kind of have higher suction and gel-strength and lower-cost organic-inorganic composite water retaining agent.
The present invention realizes by following measure:
Adopt cheap attapulgite, wilkinite and vinylformic acid main raw material, add initiator and linking agent as compound water retaining agent, in the aqueous solution through graft copolymerization, crosslinked, washing, dry, pulverize and make compound water retaining agent.
Attapulgite is a kind of zeopan mineral of chain layer structure, and is abundant at China's reserves, cheap.There is a large amount of wetting ability silicon hydroxyls in the acidifying attapulgite's surface, can with the effective grafting of polyacrylic acid, form organic-inorganic composite water retaining agent with high-hydroscopicity.
Wilkinite (Bentonite) be a kind of be the clay mineral of main component with the montmorillonite, montmorillonite is by nano level particle (10
-11-10
-9M) form, be called natural nano-material.Form electric dipole between positively charged ion and crystal skeleton between the montmorillonite crystal layer, the contact power of oxygen layer and oxygen layer is very little between the crystal layer, make it have very high cation exchange capacity, swelling property, adsorptivity and dispersiveness etc., can stably be dispersed in the aqueous solution of acrylic acid or the like hydrophilic monomer.So, can be used to prepare the compound super absorbent resin of organic-inorganic, strengthen the gel-strength of compound water retaining agent.
A kind of low-cost high water absorption composite water-loss reducer is characterized in that the raw materials in part by weight of water-holding agent is: 100 parts in vinylformic acid, attapulgite 20-80 part, wilkinite 20-80 part, initiator 0.05-1.0 part, linking agent 0.05-1.0 part; Linking agent is selected from N, N ' methylene-bisacrylamide; Initiator is selected from ammonium persulphate or Potassium Persulphate.
Attapulgite of the present invention is acidified processing, and the acid of use is selected from sulfuric acid or hydrochloric acid, and particle diameter is below 0.05mm.Acidification can further activate the silicon hydroxyl of attapulgite, improves the validity of graft reaction.
Wilkinite of the present invention is selected from sodium base or calcium-base bentonite, and particle diameter is below 0.05mm.
A kind of preparation method of low-cost high water absorption composite water-loss reducer is characterized in that the raw materials in part by weight of water-holding agent is: 100 parts in vinylformic acid, attapulgite 20-80 part, wilkinite 20-80 part, initiator 0.05-1.0 part, linking agent 0.05-1.0 part; Linking agent is selected from N, N ' methylene-bisacrylamide; Initiator is selected from ammonium persulphate or Potassium Persulphate; Acid-treated attapulgite and wilkinite are under agitation mixed, and vinylformic acid neutralizes with alkali, and degree of neutralization is 50%-80%, adds linking agent and initiator then, is warming up to 60-90 ℃ of reaction 3-5 hour, gets product after washing, drying, pulverizing.
Attapulgite is selecting and purchasing and getting from natural crystal, uses sulfuric acid or hydrochloric acid to carry out acidification after crushed, and particle diameter is below 0.05mm.Acidification can further activate the silicon hydroxyl of attapulgite, improves the validity of graft reaction.
In the vinylformic acid N-process, the alkali that uses is sodium bicarbonate or potassium hydroxide.
Fixedly the attapulgite amount changes the amount of wilkinite in reaction system, and the water absorbent rate of compound water retaining agent is to reduce gradually; Fixedly the wilkinite amount changes the amount of attapulgite in reaction system, and the water absorbent rate of compound water retaining agent changes less.Variation by water absorbent rate relatively and in conjunction with the analysis of infrared spectra, an attapulgite and a wilkinite part have participated in graft copolymerization, and a part is present in the compound water retaining agent with the physics filling form.The amount that the physics filling form is present in the compound water retaining agent is many more, and the compound water retaining agent water absorbent rate is more little.
Compared with prior art, the present invention has the following advantages: owing to used cheap attapulgite and wilkinite, the cost of compound water retaining agent is reduced greatly.The multiple that this compound water retaining agent is inhaled distilled water is 500-1200, and the multiple of inhaling 0.9%NaCl solution is 50-90.Water absorption test shows repeatedly, and the common and acroleic acid polymerization of attapulgite and wilkinite can improve the gel-strength of water-holding agent.Compound water retaining agent preparation technology is simple, is convenient to scale operation.This compound water retaining agent is after complete failure, and attapulgite and wilkinite also can strengthen soil aggregate, effectively keep soil from packing together.
Preparation technology of the present invention is easy, product water-intake rate height, and repeat performance is good, can be applied in farming, forestry and other field.
Embodiment
The invention will be further described below in conjunction with embodiment.
Embodiment 1:
Use the salt acid soak after 24 hours natural attapulgite, distilled water is washed till neutrality, and 120 ℃ of pulverizing that dry to constant weight are standby.5 gram attapulgites and 4 gram wilkinites are placed beaker, add 30mL distilled water, vigorous stirring 2 hours.Take by weighing vinylformic acid 16 grams, add 20 ml distilled waters, stir the potassium hydroxide 20mL of dropping 30% down.The attapulgite and the wilkinite that stir into suspension are added dropwise in the vinylformic acid, add linking agent 0.01 gram again, stir adding initiator 0.0180 gram after 30 minutes.Be warming up to 70 ℃, kept 3-5 hour.Linking agent is selected from N, N ' methylene-bisacrylamide; Initiator is selected from ammonium persulphate.
Product is dried to constant weight under 70 ℃, pulverize, cross 40 order mesh screens.It is 805 that product is inhaled the distilled water multiplying power, inhales 0.9%NaCl solution 60 grams, and color and luster is faint yellow.
Embodiment 2:
After natural attapulgite soaked 24 hours with sulfuric acid, distilled water was washed till neutrality, 120 ℃ dry to constant weight pulverize standby.5 gram attapulgites and 7 gram wilkinites are placed beaker, add 40mL distilled water, vigorous stirring 2 hours.Take by weighing vinylformic acid 16 grams, add 20 ml distilled waters, stir the potassium hydroxide 20mL of dropping 30% down.The attapulgite and the wilkinite that stir into suspension are added dropwise in the vinylformic acid, add linking agent 0.01 gram again, stir adding initiator 0.0180 gram after 30 minutes.Be warming up to 70 ℃, kept 3-5 hour.Linking agent is selected from N, N ＇ methylene-bisacrylamide; Initiator is selected from Potassium Persulphate.
Product is dried to constant weight under 70 ℃, pulverize, cross 40 order mesh screens.It is 550 that product is inhaled the distilled water multiplying power, inhales 0.9%NaCl solution 50 grams, and color and luster is faint yellow.
Embodiment 3:
Use the salt acid soak after 24 hours natural attapulgite, distilled water is washed till neutrality, and 120 ℃ of pulverizing that dry to constant weight are standby.100 gram attapulgites and 100 gram wilkinites are placed beaker, add 1000mL distilled water, vigorous stirring 2 hours.Take by weighing vinylformic acid 900 grams, add 800 ml distilled waters, stir the sodium hydroxide that drips 10 moles down.The Attapulgite and the wilkinite that stir into suspension are added dropwise in the vinylformic acid, add linking agent 3 grams again, stir adding initiator 10 grams after 30 minutes.Be warming up to 70 ℃, kept 3-5 hour.Linking agent is selected from N, N ' methylene-bisacrylamide; Initiator is selected from ammonium persulphate.
Product is dried to constant weight under 70 ℃, pulverize, cross 40 order mesh screens.It is 1050 that product is inhaled the distilled water multiplying power, inhales 0.9%NaCl solution 71 grams, and color and luster is faint yellow.
Claims (5)
1. a low-cost high water absorption composite water-loss reducer is characterized in that the raw materials in part by weight of water-holding agent is: 100 parts in vinylformic acid, attapulgite 20-80 part, wilkinite 20-80 part, initiator 0.05-1.0 part, linking agent 0.05-1.0 part; Linking agent is selected from N, N ' methylene-bisacrylamide; Initiator is selected from ammonium persulphate or Potassium Persulphate.
2. water-holding agent as claimed in claim 1 is characterized in that attapulgite passes through acidification, and the acid of use is selected from sulfuric acid or hydrochloric acid, and particle diameter is below 0.05mm.
3. water-holding agent as claimed in claim 1 is characterized in that wilkinite is selected from sodium base or calcium-base bentonite, and particle diameter is below 0.05mm.
4. the preparation method of water-holding agent according to claim 1 is characterized in that the raw materials in part by weight of water-holding agent is: 100 parts in vinylformic acid, attapulgite 20-80 part, wilkinite 20-80 part, initiator 0.05-1.0 part, linking agent 0.05-1.0 part; Linking agent is selected from N, N ' methylene-bisacrylamide; Initiator is selected from ammonium persulphate or Potassium Persulphate; Acid-treated attapulgite and wilkinite are under agitation mixed, and vinylformic acid neutralizes with alkali, and degree of neutralization is 50%-80%, adds linking agent and initiator then, is warming up to 60-90 ℃ of reaction 3-5 hour, gets product after washing, drying, pulverizing.
5. as the preparation method of water-holding agent as described in the claim 4, it is characterized in that in the vinylformic acid N-process that the alkali that uses is sodium bicarbonate or potassium hydroxide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006101045749A CN101143956A (en) | 2006-09-11 | 2006-09-11 | Low-cost high water absorption composite water-loss reducer and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006101045749A CN101143956A (en) | 2006-09-11 | 2006-09-11 | Low-cost high water absorption composite water-loss reducer and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101143956A true CN101143956A (en) | 2008-03-19 |
Family
ID=39206702
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2006101045749A Pending CN101143956A (en) | 2006-09-11 | 2006-09-11 | Low-cost high water absorption composite water-loss reducer and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101143956A (en) |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102002369A (en) * | 2010-10-08 | 2011-04-06 | 中国科学院新疆生态与地理研究所 | Method for preparing ecological agricultural water-retaining agent |
| CN102167787A (en) * | 2011-03-09 | 2011-08-31 | 陕西国防工业职业技术学院 | Preparation method of medical stone composite water-absorbing material |
| CN102268123A (en) * | 2011-06-10 | 2011-12-07 | 陕西国防工业职业技术学院 | Method for preparing super absorbent material for plugging during oil field drilling |
| CN102424395A (en) * | 2011-09-06 | 2012-04-25 | 中国科学院兰州化学物理研究所盱眙凹土应用技术研发中心 | Method for preparing fluorine-containing anionic surfactant modified attapulgite clay |
| CN102492070A (en) * | 2011-12-16 | 2012-06-13 | 西北师范大学 | Preparation method for foaming type nutrient composite water-retaining agent |
| CN104672407A (en) * | 2015-02-05 | 2015-06-03 | 西南林业大学 | Preparation method of natural melanin-acrylic acid composite superabsorbent resin |
| CN104710568A (en) * | 2015-04-01 | 2015-06-17 | 西安石油大学 | Preparation method of retarding swelling anti-salt viscoelastic particle profile control agent |
| CN106635036A (en) * | 2016-12-19 | 2017-05-10 | 潜山县思迈农业科技有限公司 | Degradable composite water-preserving agent for greenhouse planting and preparation method of degradable composite water-preserving agent |
| CN107699246A (en) * | 2017-10-18 | 2018-02-16 | 唐宏泉 | A kind of environment protection type soil water-loss reducer and its preparation technology |
| CN107973640A (en) * | 2017-11-30 | 2018-05-01 | 潍坊友容实业有限公司 | Sandy alkaline land improving compound fertilizer in strand and preparation method thereof |
| CN108912282A (en) * | 2018-06-07 | 2018-11-30 | 南京林业大学 | A kind of production method of multiple elements design graft modification high hydroscopic resin |
| CN110183566A (en) * | 2019-05-31 | 2019-08-30 | 河北民族师范学院 | A kind of compound methacrylate polymer high-intensity water absorbent agent of bentonite and preparation method thereof |
| CN114946601A (en) * | 2021-02-24 | 2022-08-30 | 青岛冠中生态股份有限公司 | Method for establishing vegetation system in ultrahigh-altitude desertification area |
-
2006
- 2006-09-11 CN CNA2006101045749A patent/CN101143956A/en active Pending
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102002369A (en) * | 2010-10-08 | 2011-04-06 | 中国科学院新疆生态与地理研究所 | Method for preparing ecological agricultural water-retaining agent |
| CN102167787A (en) * | 2011-03-09 | 2011-08-31 | 陕西国防工业职业技术学院 | Preparation method of medical stone composite water-absorbing material |
| CN102167787B (en) * | 2011-03-09 | 2012-09-05 | 陕西国防工业职业技术学院 | Preparation method of medical stone composite water-absorbing material |
| CN102268123A (en) * | 2011-06-10 | 2011-12-07 | 陕西国防工业职业技术学院 | Method for preparing super absorbent material for plugging during oil field drilling |
| CN102268123B (en) * | 2011-06-10 | 2013-01-09 | 陕西国防工业职业技术学院 | Method for preparing super absorbent material for plugging during oil field drilling |
| CN102424395A (en) * | 2011-09-06 | 2012-04-25 | 中国科学院兰州化学物理研究所盱眙凹土应用技术研发中心 | Method for preparing fluorine-containing anionic surfactant modified attapulgite clay |
| CN102424395B (en) * | 2011-09-06 | 2013-04-17 | 中国科学院兰州化学物理研究所盱眙凹土应用技术研发中心 | Method for preparing fluorine-containing anionic surfactant modified attapulgite clay |
| CN102492070A (en) * | 2011-12-16 | 2012-06-13 | 西北师范大学 | Preparation method for foaming type nutrient composite water-retaining agent |
| CN104672407A (en) * | 2015-02-05 | 2015-06-03 | 西南林业大学 | Preparation method of natural melanin-acrylic acid composite superabsorbent resin |
| CN104672407B (en) * | 2015-02-05 | 2017-04-26 | 西南林业大学 | Preparation method of natural melanin-acrylic acid composite superabsorbent resin |
| CN104710568A (en) * | 2015-04-01 | 2015-06-17 | 西安石油大学 | Preparation method of retarding swelling anti-salt viscoelastic particle profile control agent |
| CN106635036A (en) * | 2016-12-19 | 2017-05-10 | 潜山县思迈农业科技有限公司 | Degradable composite water-preserving agent for greenhouse planting and preparation method of degradable composite water-preserving agent |
| CN107699246A (en) * | 2017-10-18 | 2018-02-16 | 唐宏泉 | A kind of environment protection type soil water-loss reducer and its preparation technology |
| CN107973640A (en) * | 2017-11-30 | 2018-05-01 | 潍坊友容实业有限公司 | Sandy alkaline land improving compound fertilizer in strand and preparation method thereof |
| CN108912282A (en) * | 2018-06-07 | 2018-11-30 | 南京林业大学 | A kind of production method of multiple elements design graft modification high hydroscopic resin |
| CN110183566A (en) * | 2019-05-31 | 2019-08-30 | 河北民族师范学院 | A kind of compound methacrylate polymer high-intensity water absorbent agent of bentonite and preparation method thereof |
| CN114946601A (en) * | 2021-02-24 | 2022-08-30 | 青岛冠中生态股份有限公司 | Method for establishing vegetation system in ultrahigh-altitude desertification area |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101143956A (en) | Low-cost high water absorption composite water-loss reducer and preparation method thereof | |
| Zhou et al. | Synthesis composite hydrogels from inorganic-organic hybrids based on leftover rice for environment-friendly controlled-release urea fertilizers | |
| Pashaei-Fakhri et al. | Crystal violet dye sorption over acrylamide/graphene oxide bonded sodium alginate nanocomposite hydrogel | |
| CN101942167B (en) | Nanometer clay-containing high absorptive hydrogel as well as preparation method and application thereof | |
| Preetha et al. | Microwave assisted synthesis of karaya gum based montmorillonite nanocomposite: Characterisation, swelling and dye adsorption studies | |
| Wu et al. | Fabrication of carboxymethyl chitosan–hemicellulose resin for adsorptive removal of heavy metals from wastewater | |
| Dragan et al. | Efficient sorption of Cu2+ by composite chelating sorbents based on potato starch-graft-polyamidoxime embedded in chitosan beads | |
| Heybet et al. | Adsorption of methylene blue dye on sodium alginate/polypyrrole nanotube composites | |
| Salahuddin et al. | Synthesis and efficacy of PPy/CS/GO nanocomposites for adsorption of ponceau 4R dye | |
| Samaddar et al. | Polymer hydrogels and their applications toward sorptive removal of potential aqueous pollutants | |
| Khatooni et al. | Adsorption of methylene blue using sodium carboxymethyl cellulose-g-poly (acrylamide-co-methacrylic acid)/Cloisite 30B nanocomposite hydrogel | |
| CN111992181B (en) | Cationic cyclodextrin-based hydrogel adsorption material and synthesis method thereof | |
| CN107082894B (en) | A kind of double-network hydrogel adsorbent and preparation method thereof and application as heavy metal absorbent | |
| CN102532375B (en) | Polyacrylamide microsphere | |
| Xie et al. | Recovery of ammonium onto wheat straw to be reused as a slow-release fertilizer | |
| CN101787101A (en) | Preparation method of nanometer resin with high hygroscopy | |
| Kasbaji et al. | Adsorption of cationic and anionic dyes onto coffee grounds cellulose/sodium alginate double-network hydrogel beads: Isotherm analysis and recyclability performance | |
| CN1781982A (en) | Organic-inorganic composite water retaining agent with fertilizer slow release function and its preparing method | |
| CN104004521A (en) | Preparation method of bagasse pith nanometer cellulose-based composite water-retaining agent | |
| Xu et al. | Novel chitosan and Laponite based nanocomposite for fast removal of Cd (II), methylene blue and Congo red from aqueous solution | |
| CN1590504A (en) | Salt alkali resistance water preserving agent and its preparation method | |
| CN103055824B (en) | Calcium bentonite -AA- (AA-Na) composite cadmium ion adsorbent | |
| Hong et al. | Preparation of konjac glucomannan/ZIF-67 hybrid aerogel and its adsorption properties for malachite green | |
| CN104788604A (en) | Ecological moisture-retention water-storage composite material, and preparation method thereof | |
| CN100365095C (en) | Production of expanding roseite-organic composite water absorbing and retaining materials |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |