CN101550326A - Soil water-holding agent and preparation method thereof - Google Patents
Soil water-holding agent and preparation method thereof Download PDFInfo
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- CN101550326A CN101550326A CN 200810010879 CN200810010879A CN101550326A CN 101550326 A CN101550326 A CN 101550326A CN 200810010879 CN200810010879 CN 200810010879 CN 200810010879 A CN200810010879 A CN 200810010879A CN 101550326 A CN101550326 A CN 101550326A
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Abstract
The invention relates to a farmland soil water-holding agent, in particular to a soil water-holding agent and a preparation method thereof. The soil water-holding agent is prepared by the following solutions according to the parts by weight: 100-150 of modified corn straw solution, 100-300 of sodium polyacrylate solution, 5-20 of ammonium persulfate solution and 1-12 of N, N '-methylenebisacrylamide solution. The preparation method comprises the following steps: the modified corn straw solution, the sodium polyacrylate solution and the N, N '-methylenebisacrylamide solution are mixed according to a certain proportion, evenly blended and added with the 5-20 parts of the ammonium persulfate solution after a period of time and then react for a period of time under the protection of nitrogen atmosphere at the temperature of 50-90 DEG C to obtain transparent colloid; and the colloid is dried, crushed and sieved to obtain yellow brown soil water-holding agent solid particles. The soil water-holding agent has good hydroscopicity and mechanical property, low price and better application prospect.
Description
Technical field
The present invention relates to the agricultural land soil water-holding agent, specifically is a kind of water-loss reducer of soil and preparation method thereof.
Background technology
The arid disaster frequently takes place in China various places, therefore develops the view of water industry, has become the problem that presses for solution in the current agriculture production.And be a kind of new way and the novel method of water saving research at present by the purpose of utilizing water-holding agent to reach water-saving and yield-increasing.Water-holding agent claims water-loss reducer of soil, high water absorbent, wetting Agent for Printing Inks, super absorbent resin, polymer water-absorbent again, is the high molecular polymer that utilizes a kind of superelevation water-absorbing-retaining ability that the strong absorptive resin makes.Itself has no side effect water-holding agent, do not pollute the environment, finally biodegradable is water, carbonic acid gas and nitrogen, be to regulate the soil water, heat, vaporous condition, improve Soil structure, the effective means of increasing soil fertility has effects such as special drought resisting, water conservation, water saving, progressively is applied in agriculture production.
1969, water-holding agent is at first developed in the northern research centre of USDA (NRRC), and in 20th century the mid-1970s be used for aspects such as corn, soybean seeds coating, sapling transplanting and apply in western arid area as " improving the important tool of water regime ", obtain good effect, caused various countries investigators' extensive attention.After 1987, Japanese water-holding agent output every year is with 26% speed increase, at present, no matter throughput, kind and application, Japan all maintains the leading position in the water-holding agent field.2004, world's water-holding agent total demand was about 1,300,000 tons, and wherein U.S.'s consumption accounts for 35% of global consumption, and the consumption average growth rate per annum is 4～5%.Since the eighties in 20th century, China begins to develop water-holding agent and is applied to agricultural and forestry production, in scattered seeds by airplane for afforestation, plant grass and nursery stock and dip in aspect such as root transplanting and obtained effect preferably, but with external also there is a big difference.At present, about 30,000～3.5 ten thousand tons of the demand of the annual water-holding agent of China, throughput is only about 10,000 tons.
The development of water-holding agent at present mainly adopts long-chain organic macromolecule crosslinking polymerizations such as material such as vinylformic acid, acrylamide, maleic anhydride and starch, Mierocrystalline cellulose, protein to form three-dimensional netted water-absorbing-retaining structure.It can absorb and keep the moisture of own wt hundred times even thousands of times rapidly, has absorbent function repeatedly, and the suction after is a hydrogel, can slowly discharge moisture and be made for thing and absorb.Because the water-holding agent molecular structure is crosslinked, can be with the whole gelations of moisture that absorb, branch that molecular network absorbs water can not be extruded with general physical method, thereby has very strong water-retentivity.
Summary of the invention
The purpose of this invention is to provide a kind of simplification synthesis technique, select material cheap and easy to get, water-loss reducer of soil that reduces production costs and preparation method thereof.
For realizing above purpose, the technical solution adopted in the present invention is:
Water-loss reducer of soil: count 100～150 parts of corn straw modification solution, 100～300 parts of polypropylene acid sodium solutions, 5～20 parts of ammonium persulphates and 1～12 part of N, N '-methylene-bis third rare amide solution by weight.
Described corn straw modification solution is 1～5 part of corn straw modification powder, puts into 50～200 parts of water, stirs; Described polypropylene acid sodium solution is that to be neutralized to the pH value in ice-water bath be 4.5～7.5 for 30～50 parts of acrylic acid solutions and sodium hydroxide solution; Described N, N '-methylene-bis third rare amide solution is 0.5～2 part of N, N '-methylene-bis third rare acid amides adds in 30～50 parts of water and stirs; 1～5 part of ammonium persulphate of 20～50 parts of water dissolution of described ammonium persulfate solution, wherein: described sodium hydroxide solution is 20～60 parts of sodium hydroxide, slowly stirs to add 40～80 parts of water down; Described acrylic acid solution is 200～300 parts of acrylic acid solutions, removes stopper 20～40 ℃ of following underpressure distillation.
Described corn straw modification powder preparation method is: 1) the maize straw powder is produced: exsiccant fresh corn stalk behind deionized water rinsing, is cut into 2～3 centimetres of fragments, places oven for drying, will dry the back maize straw and pulverize 60～100 orders, and stand-by; 2) with the maize straw powder of step 1) 100～200 gram and 800～1000 milliliters of sodium hydroxide solutions 70～90 ℃ of stirrings 4～6 hours down, and after 100～140 order silk screen filter, filter residue is washed with deionized water, and is stand-by; 3) step 2) add 50～100 milliliters of sodium hydroxide solutions and 20～50 milliliters of ethanolic solns in the filtered filtration residue 20～40 ℃ of following reactions 30～60 minutes, reacted mixed solution is stand-by; 4) 50～100 milliliters of ethanolic solns and 30～50 milliliters of chloroacetic acid solutions will be added in the mixed solution in the step 3), under 70～90 ℃, reacted 1～2 hour, then add 20～50 milliliters of sodium hydroxide solutions and 30～50 milliliters of ethanolic solns again, it is extremely neutral with the hydrochloric acid soln titration to keep 60～100 minutes cooling backs under 70～90 ℃ of temperature of mixed solution, through 120～160 order silk screen filter, with the ethanolic soln flushing, the gained filter residue is the corn straw modification powder again.Described concentration of sodium hydroxide solution is 10～30%; Described ethanolic soln concentration is 50～90%; Described chloroacetic acid solution concentration is 5～20%; Described concentration of hydrochloric acid solution is 6～20%.
Water-loss reducer of soil preparation method: count by weight, with 100～150 parts of corn straw modification solution, 100～300 parts of polypropylene acid sodium solutions and 1～12 part of N, N '-methylene-bis third rare amide solution is mixed, stir, and in mixed solution, continue to feed the nitrogen of 3～7 liters of/minute flows, make air eliminating in the mixed solution, then mixeding liquid temperature is brought up to 20 ℃～40 ℃, reacted 0.5～1 hour, add 5～20 parts of ammonium persulfate solutions then, stir and slowly temperature be controlled at 50 ℃～90 ℃, treat solution be thick after, drying and crushing is crossed 30～50 mesh sieve and is promptly got the water-loss reducer of soil colloid.
Count by weight, described corn straw modification solution manufacturing method is with 1～5 part of corn straw modification powder, puts into 100～200 parts of water, and stirring obtains solution; Described polypropylene acid sodium solution is that to be neutralized to the pH value in ice-water bath be 4.5～7.5 for 30～50 parts of acrylic acid solutions and sodium hydroxide solution; Described N, N '-methylene-bis third rare amide solution is 0.5～2 part of N, N '-methylene-bis third rare acid amides adds in 30～50 parts of water and stirs; 1～5 part of ammonium persulphate of 20～50 parts of water dissolution of described ammonium persulfate solution, wherein: described sodium hydroxide solution is 20～40 parts of sodium hydroxide, slowly stirs to add 80～200 parts of water down; Described acrylic acid solution is 200～300 parts of acrylic acid solutions, removes stopper 20～40 ℃ of following underpressure distillation.
Described corn straw modification powder preparation method is: 1) the maize straw powder is produced: exsiccant fresh corn stalk behind deionized water rinsing, is cut into 2～3 centimetres of fragments, places oven for drying, will dry the back maize straw and pulverize 60～100 orders, and stand-by; 2) with the maize straw powder of step 1) 100～200 gram and 800～1000 milliliters of sodium hydroxide solutions 70～90 ℃ of stirrings 4～6 hours down, and after 100～140 order silk screen filter, filter residue is washed with deionized water, and is stand-by; 3) step 2) add 50～100 milliliters of sodium hydroxide solutions and 20～50 milliliters of ethanolic solns in the filtered filtration residue 20～40 ℃ of following reactions 30～60 minutes, reacted mixed solution is stand-by; 4) 50～100 milliliters of ethanolic solns and 30～50 milliliters of chloroacetic acid solutions will be added in the mixed solution in the step 3), under 70～90 ℃, reacted 1～2 hour, then add 20～50 milliliters of sodium hydroxide solutions and 30～50 milliliters of ethanolic solns again, keep 60～100 minutes cooling backs under 70～90 ℃ of the mixed solutions and be titrated to neutrality with hydrochloric acid soln, through 120～160 order silk screen filter, with the ethanolic soln flushing, the gained filter residue is the corn straw modification powder again.Described concentration of sodium hydroxide solution is 10～30%; Described ethanolic soln concentration is 50～90%; Described chloroacetic acid solution concentration is 5～20%; Described concentration of hydrochloric acid solution is 6～20%.
The advantage that the present invention had:
1. be easy to produce and use.Production technique of the present invention is simpler, does not need large-scale instrument and equipment, can finish in common lab.Water-holding agent is a solid form, helps Products Development, promotion and application.
2. low price.Required for the present inventionly want raw material conveniently to be easy to get all can to buy throughout, with low cost.
3. the present invention utilizes the corn straw modification powder as raw material, under initiator and linking agent effect, has super-strong moisture absorbing ability water-retaining agent colloid with polyacrylic acid grafted polymerization formation, the gained water-holding agent can absorb a large amount of moisture and preserve a large amount of deionized waters and physiological saline, and better mechanical property, and under certain pressure, water-holding agent of the present invention still can keep 50～80% moisture in 30 minutes by continuously centrifuged in 3000 rev/mins whizzer.
4. environmental safety.The corn straw modification that the present invention the takes crop by-product that has drawn from originally, with certain density high molecular polymer chemical combination, can decompose fully after being applied to soil, can not keep soil water content, crop demand moisture and environmentally friendly is provided, and soil building earth does not pollute.
5. have wide range of applications.Water-holding agent of the present invention not only goes for the arid area crop, and can be applied to the ornamental plant cultivation.
Embodiment
Embodiment 1
Water-loss reducer of soil: count 100 parts of corn straw modification solution, 150 parts of polypropylene acid sodium solutions, 6 parts of ammonium persulfate solutions and 8 parts of N, N '-methylene-bis third rare amide solution by weight.
Water-loss reducer of soil preparation method: count by weight, with 100 parts of corn straw modification solution, 150 parts of polypropylene acid sodium solutions and 8 parts of N, N '-methylene-bis third rare amide solution is mixed, stir, and in mixed solution, continue to charge into the nitrogen of 5 liters of/minute flows, make air eliminating in the mixed solution, then mixeding liquid temperature is brought up to 30 ℃, reacted 45 minutes, add 6 parts of ammonium persulfate solutions then, stir and slowly temperature be controlled at 70 ℃, treat solution be thick after, cross 40 mesh sieves after the drying and crushing and promptly get brown granular solids water-loss reducer of soil.
Described corn straw modification solution is 2 gram corn straw modification powder, puts into 98 gram water, stirs; Described polypropylene acid sodium solution is that to be neutralized to the pH value in ice-water bath be 6.5 for 30 parts of acrylic acid solutions and 20% sodium hydroxide solution; Described N, N '-methylene-bis third rare amide solution is 0.6 part of N, N '-methylene-bis third rare acid amides adds in 50 parts of water and stirs; Described ammonium persulfate solution 8.8 gram water dissolution 1.2 gram ammonium persulphates, wherein: described sodium hydroxide solution is 40 parts of sodium hydroxide, slowly stirs to add 60 parts of water down; Described acrylic acid solution is 200 parts of acrylic acid solutions, removes stopper 25 ℃ of following underpressure distillation.
Described corn straw modification powder preparation method is: 1) the maize straw powder is produced: exsiccant fresh corn stalk behind deionized water rinsing, is cut into 2～3 centimetres of fragments, places 90 ℃ of oven dry of baking oven in the pallet, pulverizer is pulverized, and crosses 60 order mesh screens, and is stand-by;
2) with the maize straw powder of step 1) 100 gram and 1000 milliliters of sodium hydroxide solutions 70～90 ℃ of stirrings 4 hours down, and after 120 order silk screen filter soda boiling liquid, filter residue washes 3 times repeatedly with deionized water, and is stand-by;
3) step 2) 100 milliliters of sodium hydroxide solutions of adding and 30 milliliters of ethanolic solns reacted 45 minutes down at 30 ℃ in the filtered filtration residue, and reacted mixed solution is stand-by;
4) 60 milliliters of ethanolic solns and 30 milliliters of chloroacetic acid solutions will be added in the mixed solution in the step 3), under 80 ℃, reacted 2 hours, then add 20 milliliters of sodium hydroxide solutions and 30 milliliters of ethanolic solns again, being titrated to the pH value with hydrochloric acid soln after mixed solution is kept under 80 ℃ and cooled off in 90 minutes is 7, through 120 order silk screen filter, wash filter residue repeatedly with ethanolic soln and wash repeatedly 3 times again, gained filter residue thickness brown solid is corn straw modification.
Described concentration of sodium hydroxide solution is 20%, and in 800 gram deionized waters, stirring obtains 20% sodium hydroxide solution with 200 gram dissolution of sodium hydroxide; Described ethanolic soln is that concentration is 75%, with 450 gram dehydrated alcohols, joins 150 ml deionized water, mixes and promptly gets 75% ethanolic soln; Described chloroacetic acid solution concentration 10%, in 90 gram deionized waters, stirring promptly gets chloroacetic acid solution with 10 gram Mono Chloro Acetic Acid dissolution of crystals; Described hydrochloric acid soln is the concentrated hydrochloric acid of 333 grams, at 1000 milliliters of volumetric flask deionized water constant volumes, promptly gets 12% hydrochloric acid soln.
The above sodium hydroxide, ethanol, Mono Chloro Acetic Acid, hydrochloric acid are analytical pure or chemical pure; Maize straw is taken from the dry maize straw in farmland, harvesting back; Silk screen is the polyvinyl chloride silk screen.
The maximum water-intake rate of gained water-holding agent in deionized water is 782 gram/grams, and the pick up in 0.9% sodium chloride brine is 46 gram/grams; Present transparent glue after the water-holding agent suction, in 4000 rev/mins whizzer, still can keep 50% moisture in centrifugal one hour; After a certain amount of dry water-holding agent powder and a certain amount of mixing with soil, under pressure membrane instrument 1bar pressure, still can keep the moisture of soil 60%, prove that water-holding agent has good water-holding power, has improved the water retention property of soil.
Embodiment 2
Difference from Example 1 is:
Water-loss reducer of soil: count 120 parts of corn straw modification solution, 200 parts of polypropylene acid sodium solutions, 10 parts of ammonium persulfate solutions and 1 part of N, N '-methylene-bis third rare amide solution by weight.
Water-loss reducer of soil preparation method: count by weight, with 120 parts of corn straw modification solution, 200 parts of polypropylene acid sodium solutions and 1 part of N, N '-methylene-bis third rare amide solution is mixed, stir, and in mixed solution, continue to feed the nitrogen of 5 liters of/minute flows, make air eliminating in the mixed solution, then mixeding liquid temperature is brought up to 20 ℃, reacted 50 minutes, add 10 parts of ammonium persulfate solutions then, stir and slowly temperature be controlled at 90 ℃, treat solution be thick after, cross 40 mesh sieves after the drying and crushing and promptly get brown granular solids water-loss reducer of soil.
Described corn straw modification solution is 2 gram corn straw modification powder, puts into 98 gram water, stirs; Described polypropylene acid sodium solution is that to be neutralized to the pH value in ice-water bath be 6.5 for 50 parts of acrylic acid solutions and 20% sodium hydroxide solution; Described N, N '-methylene-bis third rare amide solution is 0.6 part of N, N '-methylene-bis third rare acid amides adds in 50 parts of water and stirs; Described ammonium persulfate solution 8.8 gram water dissolution 1.2 gram ammonium persulphates, wherein: described sodium hydroxide solution is 40 parts of sodium hydroxide, slowly stirs to add 60 parts of water down; Described acrylic acid solution is 200 parts of acrylic acid solutions, removes stopper 25 ℃ of following underpressure distillation.
Described corn straw modification powder preparation method is 1) the maize straw powder produces: exsiccant fresh corn stalk behind deionized water rinsing, is cut into 2～3 centimetres of fragments, places 80 ℃ of oven dry of baking oven in the pallet, pulverizer is pulverized, and crosses 80 order mesh screens, and is stand-by;
2) with the maize straw powder of step 1) 150 gram and 800 milliliters of sodium hydroxide solutions 90 ℃ of stirrings 6 hours down, and after 100 order silk screen filter soda boiling liquid, filter residue washes 3 times repeatedly with deionized water, and is stand-by;
3) step 2) 50 milliliters of sodium hydroxide solutions of adding and 50 milliliters of ethanolic solns reacted 60 minutes down at 40 ℃ in the filtered filtration residue, and reacted mixed solution is stand-by;
4) 70 milliliters of ethanolic solns and 50 milliliters of chloroacetic acid solutions will be added in the mixed solution in the step 3), under 90 ℃, reacted 1 hour, then add 50 milliliters of sodium hydroxide solutions and 50 milliliters of ethanolic solns again, being titrated to the pH value with hydrochloric acid soln after mixed solution is kept under 90 ℃ and cooled off in 100 minutes is 7, through 160 order silk screen filter, wash repeatedly 3 times with ethanolic soln, gained filter residue thickness brown solid is corn straw modification again.
Described concentration of sodium hydroxide solution is 20%, and in 800 gram deionized waters, stirring obtains 20% sodium hydroxide solution with 200 gram dissolution of sodium hydroxide; Described ethanolic soln is that concentration is 75%, with 450 gram dehydrated alcohols, joins 150 ml deionized water, mixes and promptly gets 75% ethanolic soln; Described chloroacetic acid solution concentration 10%, in 90 gram deionized waters, stirring promptly gets chloroacetic acid solution with 10 gram Mono Chloro Acetic Acid dissolution of crystals; Described hydrochloric acid soln is the concentrated hydrochloric acid of 333 grams, at 1000 milliliters of volumetric flask deionized water constant volumes, promptly gets 12% hydrochloric acid soln.
The maximum water-intake rate of gained water-holding agent product in deionized water is 643 gram/grams, and the pick up in 0.9% sodium chloride brine is 37 gram/grams.
Embodiment 3
Difference from Example 1 is:
Water-loss reducer of soil: count 150 parts of corn straw modification solution, 300 parts of polypropylene acid sodium solutions, 20 parts of ammonium persulfate solutions and 12 parts of N, N '-methylene-bis third rare amide solution by weight.
Water-loss reducer of soil preparation method: count by weight, with 150 parts of corn straw modification solution, 300 parts of polypropylene acid sodium solutions and 12 parts of N, N '-methylene-bis third rare amide solution is mixed, stir, and in mixed solution, continue to charge into the nitrogen of 5 liters of/minute flows, make air eliminating in the mixed solution, then mixeding liquid temperature is brought up to 30 ℃, reacted 45 minutes, add 20 parts of ammonium persulfate solutions then, stir and slowly temperature be controlled at 70 ℃, treat solution be thick after, cross 40 mesh sieves after the drying and crushing and promptly get brown granular solids water-loss reducer of soil.
Described corn straw modification solution is 2 gram corn straw modification powder, puts into 98 gram water, and the maize straw powder of both must retrofiting stirs; Described polypropylene acid sodium solution is that to be neutralized to the pH value in ice-water bath be 6.5 for 50 parts of acrylic acid solutions and 20% sodium hydroxide solution; Described N, N '-methylene-bis third rare amide solution is 0.6 part of N, N '-methylene-bis third rare acid amides adds in 50 parts of water and stirs; Described ammonium persulfate solution 8.8 gram water dissolution 1.2 gram ammonium persulphates, wherein: described sodium hydroxide solution is 40 parts of sodium hydroxide, slowly stirs to add 60 parts of water down; Described acrylic acid solution is 200 parts of acrylic acid solutions, removes stopper 25 ℃ of following underpressure distillation.
Described corn straw modification powder preparation method is: 1) the maize straw powder is produced: exsiccant fresh corn stalk behind deionized water rinsing, is cut into 2～3 centimetres of fragments, places 90 ℃ of oven dry of baking oven in the pallet, pulverizer is pulverized, and crosses 60 order mesh screens, and is stand-by;
2) with the maize straw powder of step 1) 100 gram and 1000 milliliters of sodium hydroxide solutions 70～90 ℃ of stirrings 4 hours down, and after 120 order silk screen filter soda boiling liquid, filter residue washes 3 times repeatedly with deionized water, and is stand-by;
3) step 2) 100 milliliters of sodium hydroxide solutions of adding and 30 milliliters of ethanolic solns reacted 45 minutes down at 30 ℃ in the filtered filtration residue, and reacted mixed solution is stand-by;
4) 60 milliliters of ethanolic solns and 30 milliliters of chloroacetic acid solutions will be added in the mixed solution in the step 3), under 80 ℃, reacted 2 hours, then add 20 milliliters of sodium hydroxide solutions and 30 milliliters of ethanolic solns again, being titrated to the pH value with hydrochloric acid soln after mixed solution is kept under 80 ℃ and cooled off in 90 minutes is 7, through 120 order silk screen filter, wash filter residue repeatedly with ethanolic soln and wash repeatedly 3 times again, the gained filter is corn straw modification for slag thickness brown solid.
Described concentration of sodium hydroxide solution is 20%, and in 800 gram deionized waters, stirring obtains 20% sodium hydroxide solution with 200 gram dissolution of sodium hydroxide; Described ethanolic soln is that concentration is 75%, with 450 gram dehydrated alcohols, joins 150 ml deionized water, mixes and promptly gets 75% ethanolic soln; Described chloroacetic acid solution concentration 10%, in 90 gram deionized waters, stirring promptly gets chloroacetic acid solution with 10 gram Mono Chloro Acetic Acid dissolution of crystals; Described hydrochloric acid soln is the concentrated hydrochloric acid of 333 grams, at 1000 milliliters of volumetric flask deionized water constant volumes, promptly gets 12% hydrochloric acid soln.
The above sodium hydroxide, ethanol, Mono Chloro Acetic Acid, hydrochloric acid are analytical pure or chemical pure; Maize straw is taken from the dry maize straw in farmland, harvesting back; Silk screen is the polyvinyl chloride silk screen.
With the maximum water-intake rate of gained water-holding agent in deionized water is 882 gram/grams, and the pick up in 0.9% sodium chloride brine is 53 gram/grams; Be transparent glue after the water-holding agent water-swelling, in 4000 rev/mins whizzer, still can keep 55% moisture in centrifugal 50 minutes.
Claims (8)
1. a water-loss reducer of soil is characterized in that: count 100～150 parts of corn straw modification solution, 100～300 parts of polypropylene acid sodium solutions, 5～20 parts of ammonium persulphates and 1～12 part of N, N '-methylene-bis third rare amide solution by weight.
2. by the described water-loss reducer of soil of claim 1, it is characterized in that: count by weight, described corn straw modification solution is 1～5 part of corn straw modification powder, puts into 50～200 parts of water, stirs; Described polypropylene acid sodium solution is that to be neutralized to the pH value in ice-water bath be 4.5～7.5 for 30～50 parts of acrylic acid solutions and sodium hydroxide solution; Described N, N '-methylene-bis third rare amide solution is 0.5～2 part of N, N '-methylene-bis third rare acid amides adds in 30～50 parts of water and stirs; 1～5 part of ammonium persulphate of 20～50 parts of water dissolution of described ammonium persulfate solution, wherein: described sodium hydroxide solution is 20～60 parts of sodium hydroxide, slowly stirs to add 40～80 parts of water down; Described acrylic acid solution is 200～300 parts of acrylic acid solutions, removes stopper 20～40 ℃ of following underpressure distillation.
3. by the described water-loss reducer of soil of claim 2, it is characterized in that: described corn straw modification powder preparation method is: 1) the maize straw powder is produced: with exsiccant fresh corn stalk behind deionized water rinsing, be cut into 2～3 centimetres of fragments, place oven for drying, to dry the back maize straw and pulverize 60～100 orders, stand-by;
2) with the maize straw powder of step 1) 100～200 gram and 800～1000 milliliters of sodium hydroxide solutions 70～90 ℃ of stirrings 4～6 hours down, and after 100～140 order silk screen filter, filter residue is washed with deionized water, and is stand-by;
3) step 2) add 50～100 milliliters of sodium hydroxide solutions and 20～50 milliliters of ethanolic solns in the filtered filtration residue 20～40 ℃ of following reactions 30～60 minutes, reacted mixed solution is stand-by;
4) 50～100 milliliters of ethanolic solns and 30～50 milliliters of chloroacetic acid solutions will be added in the mixed solution in the step 3), under 70～90 ℃, reacted 1～2 hour, then add 20～50 milliliters of sodium hydroxide solutions and 30～50 milliliters of ethanolic solns again, it is extremely neutral with the hydrochloric acid soln titration to keep 60～100 minutes cooling backs under 70～90 ℃ of temperature of mixed solution, through 120～160 order silk screen filter, with the ethanolic soln flushing, the gained filter residue is the corn straw modification powder again.
4. by the described water-loss reducer of soil of claim 3, it is characterized in that: by the preparation method of the described corn straw modification of claim 1, it is characterized in that: described concentration of sodium hydroxide solution is 10～30%; Described ethanolic soln concentration is 50～90%; Described chloroacetic acid solution concentration is 5～20%; Described concentration of hydrochloric acid solution is 6～20%.
5. press the described water-loss reducer of soil preparation method of claim 1 for one kind, it is characterized in that: count by weight, with 100～150 parts of corn straw modification solution, 100～300 parts of polypropylene acid sodium solutions and 1～12 part of N, N '-methylene-bis third rare amide solution is mixed, stir, and in mixed solution, continue to feed the nitrogen of 3～7 liters of/minute flows, make air eliminating in the mixed solution, then mixeding liquid temperature is brought up to 20 ℃～40 ℃, reacted 0.5～1 hour, add 5～20 parts of ammonium persulfate solutions then, stir and slowly temperature is controlled at 50 ℃～90 ℃, treat solution be thick after, drying and crushing is crossed 30～50 mesh sieve and is promptly got the water-loss reducer of soil colloid.
6. by the described water-loss reducer of soil preparation method of claim 5, it is characterized in that: count by weight, described corn straw modification solution manufacturing method is with 1～5 part of corn straw modification powder, puts into 100～200 parts of water, and stirring obtains solution; Described polypropylene acid sodium solution is that to be neutralized to the pH value in ice-water bath be 4.5～7.5 for 30～50 parts of acrylic acid solutions and sodium hydroxide solution; Described N, N '-methylene-bis third rare amide solution is 0.5～2 part of N, N '-methylene-bis third rare acid amides adds in 30～50 parts of water and stirs; 1～5 part of ammonium persulphate of 20～50 parts of water dissolution of described ammonium persulfate solution, wherein: described sodium hydroxide solution is 20～40 parts of sodium hydroxide, slowly stirs to add 80～200 parts of water down; Described acrylic acid solution is 200～300 parts of acrylic acid solutions, removes stopper 20～40 ℃ of following underpressure distillation.
7. by the described water-loss reducer of soil preparation method of claim 5, it is characterized in that: described corn straw modification powder preparation method is: 1) the maize straw powder is produced: with exsiccant fresh corn stalk behind deionized water rinsing, be cut into 2～3 centimetres of fragments, place oven for drying, to dry the back maize straw and pulverize 60～100 orders, stand-by;
2) with the maize straw powder of step 1) 100～200 gram and 800～1000 milliliters of sodium hydroxide solutions 70～90 ℃ of stirrings 4～6 hours down, and after 100～140 order silk screen filter, filter residue is washed with deionized water, and is stand-by;
3) step 2) add 50～100 milliliters of sodium hydroxide solutions and 20～50 milliliters of ethanolic solns in the filtered filtration residue 20～40 ℃ of following reactions 30～60 minutes, reacted mixed solution is stand-by;
4) 50～100 milliliters of ethanolic solns and 30～50 milliliters of chloroacetic acid solutions will be added in the mixed solution in the step 3), under 70～90 ℃, reacted 1～2 hour, then add 20～50 milliliters of sodium hydroxide solutions and 30～50 milliliters of ethanolic solns again, keep 60～100 minutes cooling backs under 70～90 ℃ of the mixed solutions and be titrated to neutrality with hydrochloric acid soln, through 120～160 order silk screen filter, with the ethanolic soln flushing, the gained filter residue is the corn straw modification powder again.
8. by the described water-loss reducer of soil preparation method of claim 7, it is characterized in that: described concentration of sodium hydroxide solution is 10～30%; Described ethanolic soln concentration is 50～90%; Described chloroacetic acid solution concentration is 5～20%; Described concentration of hydrochloric acid solution is 6～20%.
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| CN (1) | CN101550326A (en) |
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| CN101838171A (en) * | 2010-05-21 | 2010-09-22 | 山东大学 | Straw-based amphoteric liquid manure controlled-release agent and application thereof |
| CN101864036A (en) * | 2010-06-03 | 2010-10-20 | 济南大学 | Method for synthesizing super absorbent resin by plant straw |
| CN102120806A (en) * | 2010-12-17 | 2011-07-13 | 长春理工大学 | Method for synthesizing water-absorbing resin composite material by using corn bract in aqueous phase medium in one step |
| CN102181011A (en) * | 2011-04-08 | 2011-09-14 | 甘肃圣大方舟马铃薯变性淀粉有限公司 | Method for preparing water-retaining agent by utilizing straws |
| CN102226030A (en) * | 2011-05-25 | 2011-10-26 | 无锡凯恩科特再生能源科技有限公司 | Preparation method of crop straw based high power water absorbent |
| CN102604644A (en) * | 2012-02-27 | 2012-07-25 | 甘肃源岗农林开发有限公司 | Ecological water-retaining agent used for restoring saline lands, and preparation method thereof |
| CN103833918A (en) * | 2014-02-21 | 2014-06-04 | 常州大学 | Method for preparing water absorbing and holding composite with lotus leaves |
| CN103896691A (en) * | 2012-12-27 | 2014-07-02 | 青岛鑫垚保水高新材料有限公司 | Preparation method of super absorbent polymer (compound) water retention fertilizer |
| CN104087303A (en) * | 2014-06-20 | 2014-10-08 | 辽宁山水城市园林景观有限公司 | High-efficiency environmental-protection type water-retaining agent for garden greening and preparation method thereof |
| CN105016885A (en) * | 2015-07-24 | 2015-11-04 | 合肥凯士新材料贸易有限公司 | Easily degradable particle type water retention matrix and preparation method thereof |
| CN105016886A (en) * | 2015-07-24 | 2015-11-04 | 合肥凯士新材料贸易有限公司 | Pollution-free particle type water retention matrix and preparation method thereof |
| CN105036935A (en) * | 2015-07-24 | 2015-11-11 | 合肥凯士新材料贸易有限公司 | Granular water-retaining matrix for improving soil porosity and preparation method thereof |
| CN105028024A (en) * | 2015-07-24 | 2015-11-11 | 合肥凯士新材料贸易有限公司 | Granular water-retention matrix for waste and preparation method thereof |
| CN105036934A (en) * | 2015-07-24 | 2015-11-11 | 合肥凯士新材料贸易有限公司 | Particle type water retention substrate capable of reducing diurnal temperature difference and preparation method thereof |
| CN105061023A (en) * | 2015-07-24 | 2015-11-18 | 合肥凯士新材料贸易有限公司 | Granular water-retaining matrix with high water retention performance and preparation method thereof |
| CN107384434A (en) * | 2017-08-30 | 2017-11-24 | 霍邱金木鱼农业科技有限公司 | A kind of biomass soil conditioner and preparation method thereof |
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| CN107619454A (en) * | 2017-07-20 | 2018-01-23 | 江苏长龙国际贸易有限公司 | A kind of preparation method of water-loss reducer of soil |
| CN107624611A (en) * | 2017-10-13 | 2018-01-26 | 宁波市鄞州区超锐食品科技有限公司 | The preparation method of organic fruits and vegetables cultivation matrix |
| 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 |
| CN109762575A (en) * | 2019-03-13 | 2019-05-17 | 东北大学 | A kind of preparation method of environment protection type soil increasing agent |
| CN115181575A (en) * | 2022-08-19 | 2022-10-14 | 润涵(山东)生态科技有限公司 | Functional water-retaining agent |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN101864036A (en) * | 2010-06-03 | 2010-10-20 | 济南大学 | Method for synthesizing super absorbent resin by plant straw |
| CN102120806A (en) * | 2010-12-17 | 2011-07-13 | 长春理工大学 | Method for synthesizing water-absorbing resin composite material by using corn bract in aqueous phase medium in one step |
| CN102120806B (en) * | 2010-12-17 | 2012-12-19 | 长春理工大学 | Method for synthesizing water-absorbing resin composite material by using corn bract in aqueous phase medium in one step |
| CN102181011A (en) * | 2011-04-08 | 2011-09-14 | 甘肃圣大方舟马铃薯变性淀粉有限公司 | Method for preparing water-retaining agent by utilizing straws |
| CN102181011B (en) * | 2011-04-08 | 2012-10-10 | 甘肃圣大方舟马铃薯变性淀粉有限公司 | Method for preparing water-retaining agent by utilizing straws |
| CN102226030B (en) * | 2011-05-25 | 2012-11-07 | 无锡凯恩科特再生能源科技有限公司 | Preparation method of crop straw based high power water absorbent |
| CN102226030A (en) * | 2011-05-25 | 2011-10-26 | 无锡凯恩科特再生能源科技有限公司 | Preparation method of crop straw based high power water absorbent |
| CN102604644A (en) * | 2012-02-27 | 2012-07-25 | 甘肃源岗农林开发有限公司 | Ecological water-retaining agent used for restoring saline lands, and preparation method thereof |
| CN102604644B (en) * | 2012-02-27 | 2015-03-11 | 甘肃源岗农林开发有限公司 | Ecological water-retaining agent used for restoring saline lands, and preparation method thereof |
| CN103896691A (en) * | 2012-12-27 | 2014-07-02 | 青岛鑫垚保水高新材料有限公司 | Preparation method of super absorbent polymer (compound) water retention fertilizer |
| CN103833918A (en) * | 2014-02-21 | 2014-06-04 | 常州大学 | Method for preparing water absorbing and holding composite with lotus leaves |
| CN104087303A (en) * | 2014-06-20 | 2014-10-08 | 辽宁山水城市园林景观有限公司 | High-efficiency environmental-protection type water-retaining agent for garden greening and preparation method thereof |
| CN105016885A (en) * | 2015-07-24 | 2015-11-04 | 合肥凯士新材料贸易有限公司 | Easily degradable particle type water retention matrix and preparation method thereof |
| CN105016886A (en) * | 2015-07-24 | 2015-11-04 | 合肥凯士新材料贸易有限公司 | Pollution-free particle type water retention matrix and preparation method thereof |
| CN105036935A (en) * | 2015-07-24 | 2015-11-11 | 合肥凯士新材料贸易有限公司 | Granular water-retaining matrix for improving soil porosity and preparation method thereof |
| CN105028024A (en) * | 2015-07-24 | 2015-11-11 | 合肥凯士新材料贸易有限公司 | Granular water-retention matrix for waste and preparation method thereof |
| CN105036934A (en) * | 2015-07-24 | 2015-11-11 | 合肥凯士新材料贸易有限公司 | Particle type water retention substrate capable of reducing diurnal temperature difference and preparation method thereof |
| CN105061023A (en) * | 2015-07-24 | 2015-11-18 | 合肥凯士新材料贸易有限公司 | Granular water-retaining matrix with high water retention performance and preparation method thereof |
| CN107619454A (en) * | 2017-07-20 | 2018-01-23 | 江苏长龙国际贸易有限公司 | A kind of preparation method of water-loss reducer of soil |
| 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 |
| CN107384434A (en) * | 2017-08-30 | 2017-11-24 | 霍邱金木鱼农业科技有限公司 | A kind of biomass soil conditioner and preparation method thereof |
| CN107624611A (en) * | 2017-10-13 | 2018-01-26 | 宁波市鄞州区超锐食品科技有限公司 | The preparation method of organic fruits and vegetables cultivation matrix |
| 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 |
| CN109762575A (en) * | 2019-03-13 | 2019-05-17 | 东北大学 | A kind of preparation method of environment protection type soil increasing agent |
| CN115181575A (en) * | 2022-08-19 | 2022-10-14 | 润涵(山东)生态科技有限公司 | Functional water-retaining agent |
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Application publication date: 20091007 |