CN102010482A - Method for preparing super-strong water-absorbing water-retaining agent - Google Patents
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Abstract
The invention discloses a method for preparing a super-strong water-absorbing water-retaining agent, which comprises the following steps of: gelatinizing or dispersing a biomass base material which is easy to degrade to form a mixture of the gelatinized or dispersed biomass base material and an unsaturated graft monomer, regulating the pH value to be between 3 and 9, and adding a cross-linking agent; and adding an active material with bacteriostatic and antibacterial activity to initiate polymerization so as to prepare the super-strong water-absorbing water-retaining agent which has bacteriostatic and antibacterial effects and is easy to degrade. The super-strong water-absorbing water-retaining agent which is prepared from the biomass base material such as starch, cellulose, polysaccharide, protein and the like and is easy to degrade has high bacteriostatic and antibacterial characteristics, the problems of poor mildew prevention, water absorption and retention functions and persistent characteristics and the like of the super-strong water-absorbing water-retaining agent product are solved, the preparation process is simplified, reaction time is shortened, production cost is greatly reduced through water and energy conservation, and waste liquid is not generated in the process.
Description
Technical field
The present invention relates to the super water-absorbing water-retaining agent of macromolecular material, relate in particular to the preparation method of the super water-absorbing water-retaining agent of easy degraded.
Background technology
The super water-absorbing water-retaining agent macromolecular material because its important use is worth, has all been obtained fast development aspect research and production since the investigator by USDA in 1974 at first succeeds in developing.
The type of super water-absorbing water-retaining agent with biological degradability is varied, the water-absorbing water-retaining agent that for example looks like biomass-based materials such as starch system, Mierocrystalline cellulose, polyose, albumen, the improvement significantly of its water absorbing properties and characteristic also shows application prospects.
Be easy to degraded because this class has the super water-absorbing water-retaining agent of biological degradability, belong to the ecological safety type saving product of water, its suction multiple is big, rate of water absorption is very fast, cost is relatively low; But because the reasons in structure of its biomass-based material, there is the problem of very easily going mouldy in product in the storage process, influence himself water-absorbing-retaining performance and long-lasting, and influences wholesomeness, stability and the security of its application.
Summary of the invention
Technical problem to be solved by this invention provides a kind of preparation method of super water-absorbing water-retaining agent, can make water-absorbing water-retaining agent have the stronger antimicrobial characteristic that presses down.
In order to solve the problems of the technologies described above, the invention provides a kind of preparation method of super water-absorbing water-retaining agent, comprising:
With the biomass-based material gelatinization or the dispersion of easily degraded, make the mixture of biomass-based material of gelatinization shape or dispersed and nonsaturation grafted monomer, regulating the pH value is 3～9, adds linking agent; Add tool and press down the anti-microbial activity material, the super water-absorbing water-retaining agent of the easy degraded that presses down antibiotic effect is provided in the initiated polymerization preparation.
Preferably,
Tool presses down the anti-microbial activity material and comprises in chitin, chitosan, potassium sorbate (sodium), nano silver particles and the oleum cupressi metal-alcoholates complex compound any one.
Preferably,
Described biomass-based material gelatinization or the dispersion that will easily degrade is meant: with one or more gelatinizations in starch or the polyose; Perhaps, with cellulose materials or protein dispersion of materials.
Preferably, this method specifically comprises:
Simple and easy pasted starch, the mixture of formation pasted starch and nonsaturation grafted monomer after adjusting pH value is 3～9, adds linking agent;
By weight percentage, add 0.2～8.0% 0.9～250,000 molecular weight chitin or chitosan, add initiator, thorough mixing causes prepolymerization; Controlled temperature is finished polymerization for 75～95 ℃, and preparation has the powerful starch system water absorbing and preserving that presses down anti-microbial effect.
Preferably, this method specifically comprises:
Simple and easy pasted starch, the mixture of formation pasted starch and nonsaturation grafted monomer after adjusting pH value is 3～9, adds linking agent;
By weight percentage, add 0.01～2% potassium sorbate or sodium sorbate, and add initiator, thorough mixing causes prepolymerization; Controlled temperature is finished polymerization for 75～95 ℃, and preparation has the powerful starch system water absorbing and preserving that presses down anti-microbial effect.
Preferably, this method specifically comprises:
Simple and easy pasted starch, the mixture of formation pasted starch and nonsaturation grafted monomer after adjusting pH value is 3～9, adds linking agent;
By weight percentage, add 0.05～5% nano silver particles, and add initiator, thorough mixing causes prepolymerization; Controlled temperature is finished polymerization for 75～95 ℃, and preparation has the powerful starch system water absorbing and preserving that presses down anti-microbial effect.
Preferably, this method specifically comprises:
Simple and easy pasted starch, the mixture of formation pasted starch and nonsaturation grafted monomer after adjusting pH value is 3～9, adds linking agent;
Adding content is the oleum cupressi metal-alcoholates complex compound of 10～100ppm, adds initiator, and thorough mixing causes prepolymerization; Finish polymerization for controlled temperature 75-95 ℃, preparation has the powerful starch system water absorbing and preserving that presses down anti-microbial effect.
Preferably,
The linking agent that adds comprise glycerine, the polyester that forms by unsaturated monocarboxylic or by polycarboxylic acid and polyvalent alcohol or the unsaturated polyester that forms in any one.
Preferably,
The initiator that adds comprises any one in hydrogen peroxide, Potassium Persulphate, Sodium Persulfate, ceric ammonium nitrate and the iron trichloride.
The bacterial super water-absorbing water-retaining agent preparation method that presses down provided by the invention, utilized the tool of 0.9～250,000 molecular weight to press down chitosan or the potassium sorbate or the sodium sorbate of anti-microbial activity, or nano silver particles or oleum cupressi metal-alcoholates complex compound press down antibiotic, anticorrosion etc. functional, given biomass-based materials such as starch system, Mierocrystalline cellulose, polyose, albumen easily the super water-absorbing water-retaining agent of degraded stronger press down antimicrobial characteristic, solved this class super water-absorbing water-retaining agent product go mouldy and suction, water retaining function and holding imitated the bad problem such as move back of characteristic.The present invention utilizes acid-base neutralisation heat release or the simple and easy starch pasting method of alkali to make such as the abundant gelatinization of this biolobic material substrate material of starch, simplified preparation technology thus, shorten the reaction times, owing to having saved water and power consumption greatly reduces production cost, and in technological process, do not had discharging of waste liquid.
Embodiment
Below by preferred embodiment technical scheme of the present invention is described in detail.Below these embodiment only be used for description and interpretation the present invention, and do not constitute restriction to technical solution of the present invention.
The preparation method embodiment of super water-absorbing water-retaining agent provided by the invention comprises:
With the biomass-based material gelatinization or the dispersion of easily degraded, make the mixture of biomass-based material of gelatinization or dispersed and nonsaturation grafted monomer, regulating the pH value is 3～9, adds linking agent; Add tool and press down the anti-microbial activity material, the super water-absorbing water-retaining agent of the easy degraded that presses down antibiotic effect is provided in the initiated polymerization preparation.
Wherein, the biomass-based material of easily degrading comprises one or more of starch, cellulose materials, polyose and protein material; As with one or more gelatinizations in starch or the polyose, perhaps with cellulose materials or protein dispersion of materials.
Easily the biomass-based material of degraded comprises one or more of starch, cellulose materials, polyose and protein material.
Wherein, tool presses down the anti-microbial activity material and comprises in chitin, chitosan, potassium sorbate (sodium), nano silver particles and the oleum cupressi metal-alcoholates complex compound any one.
Wherein, linking agent comprise glycerine, the polyester that forms by unsaturated monocarboxylic or by polycarboxylic acid and polyvalent alcohol or the unsaturated polyester that forms in any one; The acrylate that forms by ethylene glycol, glycerine and vinylformic acid for example.
Wherein, initiator comprises any one in hydrogen peroxide, Potassium Persulphate, Sodium Persulfate, ceric ammonium nitrate and the iron trichloride.
The present invention utilizes the simple and easy gelatinization method of the starch of acid-base neutralisation heat release or alkali to press down anti-microbial activity material (chitosan or interpolation potassium sorbate or sodium sorbate) technology in conjunction with crosslinked or grafting, prepares to have the powerful starch system water absorbing and preserving that presses down antimicrobial characteristic.
Chitin/chitosan, potassium sorbate (sodium), nano silver particles, and oleum cupressi metal-alcoholates complex compound etc. all has tangible bacteriostasis antibiosis effect, has safety, non-toxic nature, the field of using relates to agricultural, medicine, food chemical industry, makeup etc. at present.With chitin/chitosan or potassium sorbate (sodium) or nano silver particles or oleum cupressi metal-alcoholates a flat iron plate for making cakes compound and starch is that the crosslinked or grafting of superstrength water retaining agent is merged, giving starch is water-holding agent bacteriostasis antibiosis effect, it is not gone mouldy, thereby ensure hygienic safety, the stable performance of product.
The simple and easy gelatinization of starch mainly is divided into two kinds of means, with acid-base neutralisation heat with the simple and easy gelatinization of starch, or with alkaline solution with the simple and easy gelatinization of starch, wherein:
(1) use acid-base neutralisation heat with the simple and easy gelatinization of starch, be to contain the carboxylic acid group or contain the carboxylic acid anhydride or contain the nonsaturation grafted monomer of sulfonic group etc. or the solution of its mixture neutralizes with alkali, and make full use of the acid-base neutralisation heat release, starch pasting and neutralization are carried out synchronously, simple neutralization and gelatinization stepwise reaction technology, save starch pasting water and power consumption, formed the preparation technology of energy-saving and water-saving super water-absorbing water-retaining agent.
(2) with alkaline solution with the simple and easy gelatinization of starch, earlier with alkaline solution with starch pasting, add the carboxylic acid group or contain the carboxylic acid anhydride or contain the nonsaturation grafted monomer of sulfonic group etc. or the mixture of the nonsaturation grafted monomer of their mixture and their alkali or hydroxyl, ether, amide group, amino, ester group, cyano group and quaternary ammonium salt; Regulate the pH value, add linking agent and initiator, can prepare powerful starch system water absorbing and preserving.
Embodiment 1
By simple and easy pasted starch, form the mixture of pasted starch and nonsaturation grafted monomer, regulate pH value 3～9, add linking agent; By weight percentage, add 0.2～8.0% 0.9～250,000 molecular weight chitosan, add initiator, thorough mixing causes prepolymerization; Controlled temperature is finished polymerization for 75～95 ℃, and preparation has the powerful starch system water absorbing and preserving that presses down anti-microbial effect.
Particularly, the preparation technology's flow process that can represent the foregoing description by following application example.
Application example 1
Vinylformic acid 60ml, starch 5.0 grams are added in the anticorrosion reactor with stirring and temperature measuring, under agitation condition, add sodium hydroxide solution (25.0 gram sodium hydroxide are dissolved in 60ml water), regulating the pH value is 3, utilizes the neutralization reaction release of heat with starch pasting; Add 1% glycerine linking agent 3ml and stir after 10～20 minutes,, form mixing solutions temperature regulation to 40～50 ℃;
This mixing solutions is moved in the anti-stick reactor, and adding has the aqueous solution of 1.2 ten thousand molecular weight chitosan 0.3g, and adds Potassium Persulphate initiator 0.15 gram, stirs in the back immigration polyreaction ware, and stand at low temperature caused 20～30 minutes; 80～90 ℃ of following polymerization/dryings, obtain the porousness white solid, to pulverize to make and press down the bacterial super water-absorbing water-retaining agent, its water absorbent rate: for pure water is 410g/g, is 52g/g for 0.9% salt solution.
Application example 2
With starch 5.0g, sodium bicarbonate 8.0g dispersed with stirring in 30.0ml water; Slowly add sodium hydroxide solution (the 7.5g dissolution of sodium hydroxide is in 12.0ml water), regulating the pH value is 5, fully stirs and makes starch pasting; Add vinylformic acid 35.0ml, 1% glycerine linking agent 1.0ml, fully stir 10～20 minutes after, with temperature regulation to 40～50 ℃, form mixing solutions;
This mixing solutions is moved in the anti-stick reactor, and adding has the aqueous solution of 80,000 molecular weight chitosan 0.5g, adds Potassium Persulphate initiator 0.16 gram, stirs in the back immigration polyreaction ware, and stand at low temperature caused 20～30 minutes; 80～90 ℃ of following polymerization/dryings, obtain the porousness white solid, to pulverize to make and press down the bacterial super water-absorbing water-retaining agent, its water absorbent rate: for pure water is 212g/g, is 50g/g for 0.9% salt solution.
Application example 3
With starch 5.0g, sodium bicarbonate 8.0g dispersed with stirring in 30.0ml water; Slowly add sodium hydroxide solution (the 15g dissolution of sodium hydroxide is in 50.0ml water), regulating the pH value is 9, fully stirs and makes starch pasting; Add vinylformic acid 35.0ml, 1% glycerine linking agent 1.0ml, fully stir 10～20 minutes after, with temperature regulation to 40～50 ℃, form mixing solutions;
This mixing solutions is moved in the anti-stick reactor, and adding has the aqueous solution of 250,000 molecular weight chitosan 2.4g, adds Potassium Persulphate initiator 0.16 gram, stirs in the back immigration polyreaction ware, and stand at low temperature caused 20～30 minutes; 80～90 ℃ of following polymerization/dryings, obtain the porousness white solid, to pulverize to make and press down the bacterial super water-absorbing water-retaining agent, its water absorbent rate: for pure water is 212g/g, is 50g/g for 0.9% salt solution.
Embodiment 2
By simple and easy pasted starch, form the mixture of pasted starch and nonsaturation grafted monomer, regulate pH value 3～9, add linking agent, by weight percentage, add 0.01～2% potassium sorbate or sodium sorbate, and the interpolation initiator, thorough mixing causes prepolymerization; Controlled temperature is finished polymerization for 75～95 ℃, and preparation has the powerful starch system water absorbing and preserving that presses down anti-microbial effect.
Particularly, the preparation technology's flow process that can represent the foregoing description by following application example.
Application example 4
Vinylformic acid 40ml, starch 10 grams are added in the anticorrosion reactor with stirring and temperature measuring, add sodium hydroxide solution (15.0 gram sodium hydroxide are dissolved in 50ml water) under agitation condition, regulating the pH value is 4, utilizes the neutralization reaction release of heat with starch pasting; Add 1% glycerine linking agent 3ml and stir after 10～20 minutes,, form mixing solutions temperature regulation to 40～50 ℃;
This mixing solutions is moved in the anti-stick reactor, add potassium sorbate or sodium sorbate 0.03g, add Potassium Persulphate initiator 0.15 gram, stir the back and move in the polyreaction ware, stand at low temperature caused 20～30 minutes; 80～90 ℃ of following polymerization/dryings, obtain the porousness white solid, to pulverize to make and press down the bacterial super water-absorbing water-retaining agent, its water absorbent rate: for pure water is 190g/g, is 40g/g for 0.9% salt solution.
Application example 5
Vinylformic acid 40ml, starch 10 grams are added in the anticorrosion reactor with stirring and temperature measuring, add sodium hydroxide solution (15.0 gram sodium hydroxide are dissolved in 50ml water) under agitation condition, regulating the pH value is 6, utilizes the neutralization reaction release of heat with starch pasting; Add 1% glycerine linking agent 3ml and stir after 10～20 minutes,, form mixing solutions temperature regulation to 40～50 ℃;
This mixing solutions is moved in the anti-stick reactor, add potassium sorbate or sodium sorbate 0.3g, add Potassium Persulphate initiator 0.20 gram, stir the back and move in the polyreaction ware, stand at low temperature caused 20～30 minutes; 80～90 ℃ of following polymerization/dryings, obtain the porousness white solid, to pulverize to make and press down the bacterial super water-absorbing water-retaining agent, its water absorbent rate: for pure water is 190g/g, is 40g/g for 0.9% salt solution.
Application example 6
Vinylformic acid 40ml, starch 10 grams are added in the anticorrosion reactor with stirring and temperature measuring, add sodium hydroxide solution (20.0 gram sodium hydroxide are dissolved in 55ml water) under agitation condition, regulating the pH value is 8, utilizes the neutralization reaction release of heat with starch pasting; Add 1% glycerine linking agent 3ml and stir after 10～20 minutes,, form mixing solutions temperature regulation to 40～50 ℃;
This mixing solutions is moved in the anti-stick reactor, add potassium sorbate or sodium sorbate 0.6g, add iron trichloride initiator 0.20 gram, stir the back and move in the polyreaction ware, stand at low temperature caused 20～30 minutes; 80～90 ℃ of following polymerization/dryings, obtain the porousness white solid, to pulverize to make and press down the bacterial super water-absorbing water-retaining agent, its water absorbent rate: for pure water is 190g/g, is 40g/g for 0.9% salt solution.
Embodiment 3
By simple and easy pasted starch, form the mixture of pasted starch and nonsaturation grafted monomer, regulate pH value 3～9, add linking agent, by weight percentage, add 0.05～5% nano silver particles, and add initiator, thorough mixing causes prepolymerization; Controlled temperature is finished polymerization for 75～95 ℃, and preparation has the powerful starch system water absorbing and preserving that presses down anti-microbial effect.
Particularly, the preparation technology's flow process that can represent the foregoing description by following application example.
Application example 7
With starch 7.0g, sodium bicarbonate 9.0g dispersed with stirring in 30.0ml water; Slowly add sodium hydroxide solution (the 7.5g dissolution of sodium hydroxide is in 10.0ml water), regulating the pH value is 5, fully stirs and makes starch pasting; Add vinylformic acid 28.0ml, acrylamide 5.0g, 1% glycerine linking agent 1.0ml, fully stir 10～20 minutes after, with temperature regulation to 40～50 ℃, form mixing solutions;
This mixing solutions is moved in the anti-stick reactor, add nano silver particles 0.7g, add Potassium Persulphate initiator 0.18 gram, stir the back and move in the polyreaction ware, stand at low temperature caused 20～30 minutes; 80～90 ℃ of following polymerization/dryings, obtain the porousness white solid, to pulverize to make and press down the bacterial super water-absorbing water-retaining agent, its water absorbent rate: for pure water is 356g/g, is 45g/g for 0.9% salt solution.
Application example 8
With starch 10.0g, sodium bicarbonate 12.0g dispersed with stirring in 30.0ml water; Slowly add sodium hydroxide solution (the 15.0g dissolution of sodium hydroxide is in 50.0ml water), regulating the pH value is 6, fully stirs and makes starch pasting; Add vinylformic acid 28.0ml, acrylamide 5.0g, 1% glycerine linking agent 1.0ml, fully stir 10～20 minutes after, with temperature regulation to 40～50 ℃, form mixing solutions;
This mixing solutions is moved in the anti-stick reactor, add nano silver particles 1.0g, add Potassium Persulphate initiator 0.20 gram, stir the back and move in the polyreaction ware, stand at low temperature caused 20～30 minutes; 80～90 ℃ of following polymerization/dryings, obtain the porousness white solid, to pulverize to make and press down the bacterial super water-absorbing water-retaining agent, its water absorbent rate: for pure water is 356g/g, is 45g/g for 0.9% salt solution.
Application example 9
With starch 12.0g, sodium bicarbonate 15.0g dispersed with stirring in 30.0ml water; Slowly add sodium hydroxide solution (the 15.0g dissolution of sodium hydroxide is in 50.0ml water), regulating the pH value is 7, fully stirs and makes starch pasting; Add vinylformic acid 35.0ml, acrylamide 5.0g, 1% glycerine linking agent 1.0ml, fully stir 10～20 minutes after, with temperature regulation to 40～50 ℃, form mixing solutions;
This mixing solutions is moved in the anti-stick reactor, add nano silver particles 2.0g, add ceric ammonium nitrate initiator 0.25 gram, stir the back and move in the polyreaction ware, stand at low temperature caused 20～30 minutes; 80～90 ℃ of following polymerization/dryings, obtain the porousness white solid, to pulverize to make and press down the bacterial super water-absorbing water-retaining agent, its water absorbent rate: for pure water is 356g/g, is 45g/g for 0.9% salt solution.
Embodiment 4
By simple and easy pasted starch, form the mixture of pasted starch and nonsaturation grafted monomer, regulate pH value 3～9, add linking agent, and to add content be the oleum cupressi metal-alcoholates complex compound of 10～100ppm, the interpolation initiator, thorough mixing causes prepolymerization; Finish polymerization for controlled temperature 75-95 ℃, preparation has the powerful starch system water absorbing and preserving that presses down anti-microbial effect.
Particularly, the preparation technology's flow process that can represent the foregoing description by following application example.
Application example 10
With starch 7.0g, sodium bicarbonate 9.0g dispersed with stirring in 30.0ml water; Slowly add sodium hydroxide solution (7.5g is dissolved in 10.0ml water), regulating the pH value is 3, fully stirs and makes starch pasting; Add vinylformic acid 28.0ml, acrylamide 5.0g, 1% acrylate cross linked dose of 1.0ml, fully stir 10～20 minutes after, with temperature regulation to 40～50 ℃, form mixing solutions;
This mixing solutions is moved in the anti-stick reactor, and adding content is the oleum cupressi metal-alcoholates complex compound of 10ppm, adds Potassium Persulphate initiator 0.18 gram, stirs the back and moves in the polyreaction ware, and stand at low temperature caused 20～30 minutes; 80～90 ℃ of following polymerization/dryings, obtain the porousness white solid, to pulverize to make and press down the bacterial super water-absorbing water-retaining agent, its water absorbent rate: for pure water is 356g/g, is 45g/g for 0.9% salt solution.
Application example 11
With starch 7.0g, sodium bicarbonate 9.0g dispersed with stirring in 30.0ml water; Slowly add sodium hydroxide solution (7.5g is dissolved in 10.0ml water), regulating the pH value is 3, fully stirs and makes starch pasting; Add vinylformic acid 28.0ml, acrylamide 5.0g, 1% glycerine linking agent 1.0ml, fully stir 10～20 minutes after, with temperature regulation to 40～50 ℃, form mixing solutions;
This mixing solutions is moved in the anti-stick reactor, and adding content is the oleum cupressi metal-alcoholates complex compound of 50ppm, adds Sodium Persulfate initiator 0.18 gram, stirs the back and moves in the polyreaction ware, and stand at low temperature caused 20～30 minutes; 80～90 ℃ of following polymerization/dryings, obtain the porousness white solid, to pulverize to make and press down the bacterial super water-absorbing water-retaining agent, its water absorbent rate: for pure water is 356g/g, is 45g/g for 0.9% salt solution.
Application example 12
With starch 7.0g, sodium bicarbonate 9.0g dispersed with stirring in 30.0ml water; Slowly add sodium hydroxide solution (7.5g is dissolved in 10.0ml water), regulating the pH value is 3, fully stirs and makes starch pasting; Add vinylformic acid 28.0ml, acrylamide 5.0g, 1% acrylate cross linked dose of 1.0ml, fully stir 10～20 minutes after, with temperature regulation to 40～50 ℃, form mixing solutions;
This mixing solutions is moved in the anti-stick reactor, and adding final content is the oleum cupressi metal-alcoholates complex compound of 100ppm, adds hydrogen peroxide initiator 0.18 gram, stirs the back and moves in the polyreaction ware, and stand at low temperature caused 20～30 minutes; 80～90 ℃ of following polymerization/dryings, obtain the porousness white solid, to pulverize to make and press down the bacterial super water-absorbing water-retaining agent, its water absorbent rate: for pure water is 356g/g, is 45g/g for 0.9% salt solution.
Though more than the embodiment that exemplifies all be the preparation that the starch cording presses down the germ resistance super water-absorbing water-retaining agent, and method in fact of the present invention also can be applicable to other biomass-based materials such as Mierocrystalline cellulose, polyose easily the tool of degraded press down the preparation of germ resistance super water-absorbing water-retaining agent.
Claims (9)
1. the preparation method of a super water-absorbing water-retaining agent comprises:
With the biomass-based material gelatinization or the dispersion of easily degraded, make the mixture of biomass-based material of gelatinization shape or dispersed and nonsaturation grafted monomer, regulating the pH value is 3～9, adds linking agent; Add tool and press down the anti-microbial activity material, the super water-absorbing water-retaining agent of the easy degraded that presses down antibiotic effect is provided in the initiated polymerization preparation.
2. according to the described preparation method of claim 1, it is characterized in that,
Described tool presses down the anti-microbial activity material and comprises in chitin, chitosan, potassium sorbate (sodium), nano silver particles and the oleum cupressi metal-alcoholates complex compound any one.
3. according to the described preparation method of claim 2, it is characterized in that,
Described biomass-based material gelatinization or the dispersion that will easily degrade is meant: with one or more gelatinizations in starch or the polyose; Perhaps with cellulose materials or protein dispersion of materials
4. according to the described preparation method of claim 3, it is characterized in that, specifically comprise:
Simple and easy pasted starch forms the mixture of pasted starch and nonsaturation grafted monomer, regulates after described pH value is 3～9, adds described linking agent;
By weight percentage, add 0.2～8.0% 0.9～250,000 molecular weight chitin or chitosan, add initiator, thorough mixing causes prepolymerization; Controlled temperature is finished polymerization for 75～95 ℃, and preparation has the powerful starch system water absorbing and preserving that presses down anti-microbial effect.
5. according to the described preparation method of claim 3, it is characterized in that, specifically comprise:
Simple and easy pasted starch forms the mixture of pasted starch and nonsaturation grafted monomer, regulates after described pH value is 3～9, adds described linking agent;
By weight percentage, add 0.01～2% potassium sorbate or sodium sorbate, and add initiator, thorough mixing causes prepolymerization; Controlled temperature is finished polymerization for 75～95 ℃, and preparation has the powerful starch system water absorbing and preserving that presses down anti-microbial effect.
6. according to the described preparation method of claim 3, it is characterized in that, specifically comprise:
Simple and easy pasted starch forms the mixture of pasted starch and nonsaturation grafted monomer, regulates after described pH value is 3～9, adds described linking agent;
By weight percentage, add 0.05～5% nano silver particles, and add initiator, thorough mixing causes prepolymerization; Controlled temperature is finished polymerization for 75～95 ℃, and preparation has the powerful starch system water absorbing and preserving that presses down anti-microbial effect.
7. according to the described preparation method of claim 3, it is characterized in that, specifically comprise:
Simple and easy pasted starch forms the mixture of pasted starch and nonsaturation grafted monomer, regulates after described pH value is 3～9, adds described linking agent;
Adding content is the oleum cupressi metal-alcoholates complex compound of 10～100ppm, adds initiator, and thorough mixing causes prepolymerization; Finish polymerization for controlled temperature 75-95 ℃, preparation has the powerful starch system water absorbing and preserving that presses down anti-microbial effect.
8. according to each described preparation method of claim 4 to 7, it is characterized in that,
The described linking agent that adds comprise glycerine, the polyester that forms by unsaturated monocarboxylic or by polycarboxylic acid and polyvalent alcohol or the unsaturated polyester that forms in any one.
9. according to each described preparation method of claim 4 to 7, it is characterized in that,
The described initiator that adds comprises any one in hydrogen peroxide, Potassium Persulphate, Sodium Persulfate, ceric ammonium nitrate and the iron trichloride.
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| CN109135758A (en) * | 2018-08-02 | 2019-01-04 | 佛山皖阳生物科技有限公司 | A kind of preparation method of antimicrobial form water-loss reducer of soil |
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| CN106146763A (en) * | 2015-03-09 | 2016-11-23 | 邹城市安德机械制修有限公司 | A kind of method of Fructus Gleditsia full powder synthesis hydroscopic high-molecular resin |
| CN106146762A (en) * | 2015-03-09 | 2016-11-23 | 邹城市安德机械制修有限公司 | A kind of method of rapeseed meal synthesis hydroscopic high-molecular resin |
| CN106146736A (en) * | 2015-03-09 | 2016-11-23 | 邹城市安德机械制修有限公司 | A kind of method of Sorghum vulgare Pers. full powder synthesis hydroscopic high-molecular resin |
| CN107535338A (en) * | 2017-09-19 | 2018-01-05 | 中华全国供销合作总社南京野生植物综合利用研究所 | A kind of dendrobium imitating wild planting technology using plant polyose glue as attachment |
| CN108456528A (en) * | 2018-01-10 | 2018-08-28 | 皖西学院 | A kind of compound water retaining agent and preparation method thereof |
| CN109135758A (en) * | 2018-08-02 | 2019-01-04 | 佛山皖阳生物科技有限公司 | A kind of preparation method of antimicrobial form water-loss reducer of soil |
| CN109824831A (en) * | 2019-01-29 | 2019-05-31 | 江苏常源新材料科技有限公司 | A kind of preparation method of degradable high-performance water-absorbing resin |
| CN109906911A (en) * | 2019-03-18 | 2019-06-21 | 乐途景辰(浙江)体育有限公司 | A kind of modified soil and its preparation process applied to Football Field Turf plantation |
| CN110432116A (en) * | 2019-09-19 | 2019-11-12 | 国家林业和草原局泡桐研究开发中心 | A kind of preparation method of tree species cutting medium difficult to take root |
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