CN1408740A - Agriculturalw ater retaining meterial of straw protofiber grafted poly propenoic acid/salts - Google Patents
Agriculturalw ater retaining meterial of straw protofiber grafted poly propenoic acid/salts Download PDFInfo
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- CN1408740A CN1408740A CN 01131335 CN01131335A CN1408740A CN 1408740 A CN1408740 A CN 1408740A CN 01131335 CN01131335 CN 01131335 CN 01131335 A CN01131335 A CN 01131335A CN 1408740 A CN1408740 A CN 1408740A
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- straw
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Abstract
The present invention relates to the production process of a kind of degradable straw protofiber grafted polyacrylate farm water retaining material. Straw protofiber, partially neutralized acrylic acid and crosslinking agent are bulk polymerized to produce high hydroscopicity resin. The material can improve soil moisture content in low cost and is degradable.
Description
Technical field
The invention relates to the production technique of the agricultural water-keeping material of a kind of degradable straw fiber grafted propylene hydrochlorate, the super absorbent resin of making by mass polymerization by straw protofibril and part neutral vinylformic acid and linking agent, this material can improve Soil Moisture, low, the degradable of cost is suitable for promoting the use of on agricultural simultaneously.
Background technology
Existing technology adopts solution method more, the Mierocrystalline cellulose complex pretreatment, Mierocrystalline cellulose at first will carry out swelling in the aqueous solution of sodium hydroxide, washing can cause very big environmental pollution, in addition, polyreaction is carried out at aqueous phase, polymerisate is hydrophilic, the product drying very difficulty, production energy consumption is high, absorptive character height but salt tolerance is bad.Relevant patent: US3889678; US4105033; GB1501239; GB927122.
Mierocrystalline cellulose is swelling in the aqueous solution of alkali, washing; Fiber behind the swelling carries out reversed-phase polymerization in polymerization or buck and the organic solvent in the buck; Slough solvent; Oven dry; This production technique severe contamination; The cost height is difficult to promote in China; This technology has been destroyed the nutrition of straw in addition.
Summary of the invention
The objective of the invention is to, all be confirmed in the research data effectively at home and abroad of the use of polyacrylate type high water absorption material in agroforestry, but, can't obtain application in practice widely in China because the cost of this class material is too high at present.It is low to the objective of the invention is to develop a kind of cost, produces and use equal environmentally safe, and good water absorption, salt absorbing rate are high and can fill the agricultural novel super absorbent material of Feng Liyong natural nutrient component.
The object of the present invention is achieved like this:
New technological line provided by the invention is:
1. straw is ground into dry powder (normal temperature), dry powder particle diameter＜0.2 centimetre;
2. add mealy alkali (NaOH/KOH/K
2CO
3) hydrogen atom in the exchange straw fiber powder makes its swelling (temperature is controlled at 35～150 ℃);
3. with vinylformic acid, acrylamide, N, the two acrylimides of N-dimethylene are by weight: mix 100/ (5～30)/(0.05～0.2);
4. straw fiber powder of step 2 being handled well and initiator (ammonium persulphate/Potassium Persulphate/potassium permanganate/hydrogen peroxide) mixing, the weight ratio of fiber powder and initiator is 100/ (0.01～0.5) during mixing;
5. the mixture that step 3 is obtained is added in the straw fiber powder that step 4 is handled well, and weight ratio is 1: 2～2: 1;
6. at room temperature stirred 2-4 hour, and added aided initiating (ferrous sulfate/sodium bisulfite/oxalic acid) and at room temperature stirred 2-4 hour; In 60-80 degree insulation oven dry then in 2 hours, obtain agricultural novel super absorbent material of the present invention.
Material provided by the invention, its usage improves the root soil moisture content for imposing on plant root soil, turns to the fertilizer of crop after action period by degraded, is used to improve the planting environment of farm crop and forest, improves the output surviving rate of plant.
Result of use: one, reduce the soil transpiration, prevent the seepage and the loss of moisture, efficiently utilize natural precipitation, improve the crop root soil moisture content, improve the plant drought ability;
Two, after the usage period, can be become fertilizer, promote the speciality of plant by microbiological deterioration in the soil.This material water retention can reach 2～3 months, and with low cost, for raising crop yield, quick restore vegetation positive effect is arranged.
Characteristics of the present invention are that raw material is cheap, with straw and the vinylformic acid main raw material of pulverizing, have made full use of the environment friendly of natural materials and being easy to get property, have obviously reduced production cost.
Technology is simple, and it is solid-state only using less water, reaction system in the reaction, and Acrylic Acid Monomer is dispersed on the straw fiber and reacts, and heat release is even, carries out granulation in the reaction simultaneously, and reaction product need not pulverized, dry, and can directly use the field.
Degradable, this body of material are straw fiber, can be broken down into organism under field conditions (factors), become fertilizer.
The advance of the technology of the present invention show following some:
1. solid state reaction;
2. mass polymerization;
3. solvent-free chemistry reaction;
4. Green Chemistry process engineering;
5. present method preparation contains other nutritive ingredient in the straw, imposes on the field, is of value to the growth of plant;
6. degrade easily at nature, degraded product is a fertilizer.
7. Acrylic Acid Monomer is dispersed on the straw fiber and reacts, and heat release is even, carries out granulation in the reaction simultaneously, and reaction product need not pulverized, dry, and can directly use the field.
8. cost is low, promotes in China easily.
Embodiment
Embodiment 1
With weight ratio is 8 parts NaOH powder, adds 100 parts of grain diameters less than in 0.2 centimetre the straw dry powder, uses the agitator mixing, places 1 hour down at 40～50 ℃, adds (0.02～0.05) part ammonium persulphate again, mixes;
With 50 parts in vinylformic acid, 10 parts of acrylamides, N, the two acrylimides of N-dimethylene mix for 0.05～0.1 part, join in the above-mentioned straw powder, mix.Adding 0.001～0.005 part of sodium bisulfite at room temperature stirred 2-4 hour; In 60-80 degree insulation oven dry then in 2 hours, discharging gets final product.
Embodiment 2
With weight ratio is 12 parts of K
2CO
3Powder adds 100 parts of grain diameters less than in 0.2 centimetre the straw dry powder, uses the agitator mixing, places 1 hour down at 30～50 ℃, adds (0.01～0.03) part potassium permanganate again, mixes;
With 50 parts in vinylformic acid, 20 parts of acrylamides, N, the two acrylimides of N-dimethylene mix for 0.05～0.1 part, join in the above-mentioned straw powder, mix.Adding 0.001～0.002 part of oxalic acid at room temperature stirred 2-4 hour; In 60-80 degree insulation oven dry then in 2 hours, discharging gets final product.
Claims (1)
1. the preparation method of the agricultural water-keeping material of straw protofibril grafted polyacrylic acid/salt may further comprise the steps:
(1) straw is ground into dry powder (normal temperature), dry powder particle diameter＜0.2 centimetre;
(2) add mealy alkali (NaOH/KOH/K
2CO
3) hydrogen atom in the exchange straw fiber powder makes its swelling (temperature is controlled at 35～150 ℃);
(3) with vinylformic acid, acrylamide, N, the two acrylimides of N-dimethylene are by weight: mix 100/ (5～30)/(0.05～0.2);
(4) straw fiber powder of step 2 being handled well and initiator (ammonium persulphate/Potassium Persulphate/potassium permanganate/hydrogen peroxide) mixing, the weight ratio of fiber powder and initiator is 100/ (0.01～0.5) during mixing;
(5) mixture that step 3 is obtained is added in the straw fiber powder that step 4 is handled well, and weight ratio is 1: 2～2: 1;
(6) at room temperature stir 2-4 hour, add aided initiating (ferrous sulfate/sodium bisulfite/oxalic acid) and at room temperature stirred 2-4 hour; In 60-80 degree insulation oven dry then in 2 hours, obtain agricultural novel super absorbent material of the present invention.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01131335 CN1408740A (en) | 2001-09-24 | 2001-09-24 | Agriculturalw ater retaining meterial of straw protofiber grafted poly propenoic acid/salts |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01131335 CN1408740A (en) | 2001-09-24 | 2001-09-24 | Agriculturalw ater retaining meterial of straw protofiber grafted poly propenoic acid/salts |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1408740A true CN1408740A (en) | 2003-04-09 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01131335 Pending CN1408740A (en) | 2001-09-24 | 2001-09-24 | Agriculturalw ater retaining meterial of straw protofiber grafted poly propenoic acid/salts |
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| CN (1) | CN1408740A (en) |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1315897C (en) * | 2004-06-29 | 2007-05-16 | 北京理工大学 | Process for preparing cellulose modified high water absorption resin |
| CN100566586C (en) * | 2005-09-14 | 2009-12-09 | 山西省农业科学院经济作物研究所 | High protein whole straw ammoniated forage stimulator |
| CN101173157B (en) * | 2007-10-15 | 2010-06-02 | 东北林业大学 | Water-loss reducer using waste pouce or Chinese medicine slag and wastepaper as raw material, and production method thereof |
| CN101838171A (en) * | 2010-05-21 | 2010-09-22 | 山东大学 | Straw-based amphoteric liquid manure controlled-release agent and application thereof |
| CN101914256A (en) * | 2010-08-06 | 2010-12-15 | 西北师范大学 | Method for preparing composite water-retaining agent by adopting plant straws |
| CN101982504A (en) * | 2010-10-11 | 2011-03-02 | 内蒙古大学 | Method for preparing plate by utilizing polyacrylic acid and sodium salt thereof as adhesive and waste plant fiber |
| CN102532416A (en) * | 2010-12-31 | 2012-07-04 | 莱芜市涌金化工有限公司 | Method for preparing soil water retention modifier by oxidizing and grafting straws |
| CN102826928A (en) * | 2012-09-24 | 2012-12-19 | 西北师范大学 | Nutritional water retention agent for planting cash crops in desertification region |
| CN103524681A (en) * | 2012-07-03 | 2014-01-22 | 中国科学院兰州化学物理研究所 | Kapok fiber composite super absorbent resin as well as preparation method thereof |
| CN106008857A (en) * | 2016-05-09 | 2016-10-12 | 北京化工大学 | Synthesis and application of novel sand fixing dust inhibitor prepared from alkali corn stalk |
| CN106748052A (en) * | 2016-12-06 | 2017-05-31 | 中国科学院寒区旱区环境与工程研究所 | A kind of drought-resistant water-preserving increasing agent and preparation method thereof |
| CN107474854A (en) * | 2017-08-30 | 2017-12-15 | 常州瑞坦商贸有限公司 | A kind of preparation method of agricultural type cellulose water retention agent |
| CN108841391A (en) * | 2018-03-30 | 2018-11-20 | 广西科技师范学院 | A kind of preparation method of water-loss reducer of soil |
| CN109369260A (en) * | 2018-11-16 | 2019-02-22 | 东北大学 | Ecology water conservation saves fertilizer and promotes the plant growth substance preparation method of volume increase |
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2001
- 2001-09-24 CN CN 01131335 patent/CN1408740A/en active Pending
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1315897C (en) * | 2004-06-29 | 2007-05-16 | 北京理工大学 | Process for preparing cellulose modified high water absorption resin |
| CN100566586C (en) * | 2005-09-14 | 2009-12-09 | 山西省农业科学院经济作物研究所 | High protein whole straw ammoniated forage stimulator |
| CN101173157B (en) * | 2007-10-15 | 2010-06-02 | 东北林业大学 | Water-loss reducer using waste pouce or Chinese medicine slag and wastepaper as raw material, and production method thereof |
| CN101838171B (en) * | 2010-05-21 | 2012-10-24 | 山东大学 | Straw-based amphoteric liquid manure controlled-release agent and application thereof |
| CN101838171A (en) * | 2010-05-21 | 2010-09-22 | 山东大学 | Straw-based amphoteric liquid manure controlled-release agent and application thereof |
| CN101914256A (en) * | 2010-08-06 | 2010-12-15 | 西北师范大学 | Method for preparing composite water-retaining agent by adopting plant straws |
| CN101982504B (en) * | 2010-10-11 | 2011-11-02 | 内蒙古大学 | Method for preparing plate by utilizing polyacrylic acid and sodium salt thereof as adhesive and waste plant fiber |
| CN101982504A (en) * | 2010-10-11 | 2011-03-02 | 内蒙古大学 | Method for preparing plate by utilizing polyacrylic acid and sodium salt thereof as adhesive and waste plant fiber |
| CN102532416A (en) * | 2010-12-31 | 2012-07-04 | 莱芜市涌金化工有限公司 | Method for preparing soil water retention modifier by oxidizing and grafting straws |
| CN103524681A (en) * | 2012-07-03 | 2014-01-22 | 中国科学院兰州化学物理研究所 | Kapok fiber composite super absorbent resin as well as preparation method thereof |
| CN103524681B (en) * | 2012-07-03 | 2015-11-18 | 中国科学院兰州化学物理研究所 | A kind of bombax cotton composite highly-absorbent resin and preparation method thereof |
| CN102826928A (en) * | 2012-09-24 | 2012-12-19 | 西北师范大学 | Nutritional water retention agent for planting cash crops in desertification region |
| CN106008857A (en) * | 2016-05-09 | 2016-10-12 | 北京化工大学 | Synthesis and application of novel sand fixing dust inhibitor prepared from alkali corn stalk |
| CN106008857B (en) * | 2016-05-09 | 2018-10-30 | 北京化工大学 | A kind of synthesis and application of the novel dust suppressant that fixes the sand of alkali maize straw |
| CN106748052A (en) * | 2016-12-06 | 2017-05-31 | 中国科学院寒区旱区环境与工程研究所 | A kind of drought-resistant water-preserving increasing agent and preparation method thereof |
| CN107474854A (en) * | 2017-08-30 | 2017-12-15 | 常州瑞坦商贸有限公司 | A kind of preparation method of agricultural type cellulose water retention agent |
| CN108841391A (en) * | 2018-03-30 | 2018-11-20 | 广西科技师范学院 | A kind of preparation method of water-loss reducer of soil |
| CN108841391B (en) * | 2018-03-30 | 2021-01-29 | 广西科技师范学院 | Preparation method of soil water-retaining agent |
| CN109369260A (en) * | 2018-11-16 | 2019-02-22 | 东北大学 | Ecology water conservation saves fertilizer and promotes the plant growth substance preparation method of volume increase |
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| C06 | Publication | ||
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| WD01 | Invention patent application deemed withdrawn after publication |