CN110903780A - Environment-friendly starch adhesive and processing technology thereof - Google Patents
Environment-friendly starch adhesive and processing technology thereof Download PDFInfo
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- CN110903780A CN110903780A CN201911137376.6A CN201911137376A CN110903780A CN 110903780 A CN110903780 A CN 110903780A CN 201911137376 A CN201911137376 A CN 201911137376A CN 110903780 A CN110903780 A CN 110903780A
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J103/00—Adhesives based on starch, amylose or amylopectin or on their derivatives or degradation products
- C09J103/04—Starch derivatives
- C09J103/10—Oxidised starch
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
- C08B31/00—Preparation of derivatives of starch
- C08B31/18—Oxidised starch
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/08—Macromolecular additives
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J4/00—Adhesives based on organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond ; adhesives, based on monomers of macromolecular compounds of groups C09J183/00 - C09J183/16
- C09J4/06—Organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond in combination with a macromolecular compound other than an unsaturated polymer of groups C09J159/00 - C09J187/00
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
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- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Adhesives Or Adhesive Processes (AREA)
Abstract
The invention discloses an environment-friendly starch adhesive which comprises the following raw materials in parts by weight: 50-80 parts of starch, 20-30 parts of hydrogen peroxide, 5-10 parts of sodium hydroxide, 10-20 parts of a cross-linking agent, 1-5 parts of sodium thiosulfate, 5-10 parts of a defoaming agent, 1-5 parts of a terminating agent and the balance of clear water, wherein the cross-linking agent is one or a combination of more of borax, hydroxyethyl acrylate, hydroxypropyl methacrylate, N-hydroxymethyl acrylamide or diacetone acrylamide, and the invention relates to the technical field of environment-friendly materials. The environment-friendly starch adhesive and the processing technology thereof can greatly improve the environmental protection property of the production technology of the starch adhesive, realize the extraction and utilization of starch by recycling waste crops, well achieve the aim of producing high-quality starch adhesive on the premise of energy conservation and environmental protection, and simultaneously realize the improvement of the preparation technology of the starch adhesive to improve the water resistance, storage stability and moisture and mildew resistance of the starch adhesive, thereby ensuring the normal use of the starch adhesive.
Description
Technical Field
The invention relates to the technical field of environment-friendly materials, in particular to an environment-friendly starch adhesive and a processing technology thereof.
Background
Starch is a nutrient stored in plants, is stored in seeds and tubers, and has high starch content in various plants. The starch can be regarded as a high polymer of glucose, the starch is not only edible, but also industrially used for preparing dextrin, maltose, glucose, alcohol and the like, and is also used for preparing printing paste, textile sizing, paper sizing, medicine tablet pressing and the like, the starch is a product of green plants for photosynthesis, is mainly derived from agricultural products such as corn, wheat and potatoes, has the characteristics of abundant and cheap resources, renewability, no exhaustion, biodegradability and the like, has good adhesiveness and film forming performance, the adhesive produced by taking the starch as a raw material has the characteristics of no corrosion, no pollution, low cost, no toxicity, no peculiar smell, no public hazard and the like, is an ideal substitute of petrochemical industry adhesive, meets the social requirements of environmental protection, health and sustainable development, the starch adhesive is modified starch, the starch is prepared by oxidizing starch by using an oxidizing agent to oxidize hydroxymethyl on 6-position carbon of an original starch chain glucose unit into aldehyde group and carboxyl group, the starch adhesive has the advantages of high bonding strength, high paperboard stiffness, no moisture absorption and softening, no corrosion, no pollution, low use cost and the like, and is adopted by more and more carton production enterprises.
Most of the existing starch adhesives are produced by directly extracting starch from crops such as wheat, corn, soybean, potatoes and the like, however, the production process of the starch adhesives is poor in environmental protection property, the extraction and utilization of the starch from the recovered waste crops cannot be realized, the purpose of producing high-quality starch adhesives on the premise of energy conservation and environmental protection cannot be achieved, meanwhile, the existing starch adhesives are poor in water resistance, storage stability and moisture and mildew resistance, the preparation process of the starch adhesives cannot be improved, the water resistance, storage stability and moisture and mildew resistance of the starch adhesives are improved, and therefore great inconvenience is brought to the normal use of the starch adhesives.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides an environment-friendly starch adhesive and a processing technology thereof, and solves the problems that the production technology of the starch adhesive is poor in environmental protection, the extraction and utilization of starch of recycled waste crops cannot be realized, the purpose of producing high-quality starch adhesive on the premise of energy conservation and environmental protection cannot be achieved, meanwhile, the water resistance, the storage stability and the moisture and mildew resistance of the existing starch adhesive are poor, and the improvement on the preparation technology of the starch adhesive cannot be realized, so that the water resistance, the storage stability and the moisture and mildew resistance of the starch adhesive are improved.
(II) technical scheme
In order to achieve the purpose, the invention is realized by the following technical scheme: an environment-friendly starch adhesive comprises the following raw materials in parts by weight: 50-80 parts of starch, 20-30 parts of hydrogen peroxide, 5-10 parts of sodium hydroxide, 10-20 parts of a cross-linking agent, 1-5 parts of sodium thiosulfate, 5-10 parts of a defoaming agent, 1-5 parts of a terminating agent and the balance of clear water.
Preferably, the raw materials comprise the following components: 70 parts of starch, 25 parts of hydrogen peroxide, 7 parts of sodium hydroxide, 15 parts of a cross-linking agent, 3 parts of sodium thiosulfate, 7 parts of a defoaming agent, 3 parts of a terminating agent and the balance of clear water.
Preferably, the raw materials comprise the following components: 50 parts of starch, 20 parts of hydrogen peroxide, 5 parts of sodium hydroxide, 10 parts of a cross-linking agent, 1 part of sodium thiosulfate, 5 parts of a defoaming agent, 1 part of a terminating agent and the balance of clear water.
Preferably, the raw materials comprise the following components: 80 parts of starch, 30 parts of hydrogen peroxide, 10 parts of sodium hydroxide, 20 parts of a cross-linking agent, 5 parts of sodium thiosulfate, 10 parts of a defoaming agent, 5 parts of a terminating agent and the balance of clear water.
Preferably, the cross-linking agent is one or more of borax, hydroxyethyl acrylate, hydroxypropyl methacrylate, N-methylolacrylamide or diacetone acrylamide.
Preferably, the defoaming agent is one or more of boron emulsified silicone oil, polyoxyethylene polyoxypropylene pentaerythritol ether, polyoxyethylene polyoxypropylene amine ether, polyoxypropylene glycerol ether and polydimethylsiloxane.
Preferably, the terminating agent is one or more of wood tar, sodium dimethyldithiocarbamate, sodium polysulfide and sodium nitrite in combination.
Preferably, the starch is extracted from a material selected from the group consisting of damaged, rotten and inedible tapioca, sweet potato or potato.
The invention also discloses a processing technology of the environment-friendly starch adhesive, which specifically comprises the following steps:
s1, firstly, selecting damaged, rotten and unsalable raw materials for producing cassava, sweet potatoes or potato starch, pouring the raw materials into a cleaning machine for rinsing for 3-4 times, then pouring the rinsed raw materials for producing starch into a boiler, then adding corresponding clean water until the raw materials for producing starch are completely immersed in the liquid surface of the clean water, and then heating the boiler to boil the clean water in the boiler for 30-40min until the raw materials for producing starch are completely cooked;
s2, putting the cooked starch production raw material S1 into a dryer, drying for 1-2 hours at the temperature of 90-110 ℃, and then crushing and grinding to obtain the required starch powder;
s3, adding the balance of water and hydrogen peroxide in corresponding proportion into the reaction pot, starting a stirrer to fully stir, adding the starch powder prepared in the step S2 into the reaction pot to uniformly disperse, and continuing to stir for 5-10min after the addition is finished to uniformly mix the materials;
s4, adding 30% of sodium hydroxide in corresponding proportion into water to prepare 10% solution, then adding the solution into a reaction pot of S3 while stirring, reacting for 1-2h, adding 200 kg of defoaming agent in corresponding proportion, supplementing 200 kg of water after most of foam disappears, and measuring the viscosity of the solution for 60 seconds to reach the required oxidation degree;
s5, adding 200 kg of water into the reaction kettle, measuring the initial viscosity for 30 seconds, preparing a 20% solution of the cross-linking agent by using hot water at 70-75 ℃, adding the solution into the reaction materials under stirring, and measuring the final viscosity for 50 seconds;
s6, preparing a 10% solution from sodium thiosulfate in a corresponding proportion, adding the solution into the reaction materials under stirring to terminate the reaction, selecting a terminator in a corresponding proportion to prepare a 10% solution, and adding the solution into the S5 reaction materials under stirring to terminate the reaction, thereby obtaining the environment-friendly starch adhesive.
(III) advantageous effects
The invention provides an environment-friendly starch adhesive and a processing technology thereof. Compared with the prior art, the method has the following beneficial effects: the environment-friendly starch adhesive and the processing technology thereof comprise the following raw materials in parts by weight: 50-80 parts of starch, 20-30 parts of hydrogen peroxide, 5-10 parts of sodium hydroxide, 10-20 parts of a cross-linking agent, 1-5 parts of sodium thiosulfate, 5-10 parts of a defoaming agent, 1-5 parts of a terminating agent and the balance of clear water, wherein the cross-linking agent is one or a combination of more of borax, hydroxyethyl acrylate, hydroxypropyl methacrylate, N-hydroxymethyl acrylamide or diacetone acrylamide, the defoaming agent is one or a combination of more of boron emulsified silicone oil, polyoxyethylene polyoxypropylene pentaerythritol ether, polyoxyethylene polyoxypropylene amine ether, polyoxypropylene glycerol ether and polydimethylsiloxane, the terminating agent is one or a combination of more of wood tar, sodium dimethyldithiocarbamate, sodium polysulfide and sodium nitrite, and the extraction material of the starch is selected from damaged, rotten and inedible cassava, The sweet potato, sweet potato or potato processing technology specifically comprises the following steps: s1, firstly selecting damaged, rotten and unsalable raw materials for producing cassava, sweet potato or potato starch, pouring the raw materials into a cleaning machine for rinsing for 3-4 times, then pouring the rinsed raw materials into a boiler, then adding corresponding clear water, S2, then putting the cooked raw materials for producing the starch of S1 into a drying machine for drying at 90-110 ℃ for 1-2 hours, then crushing and grinding to obtain the required starch powder, S3, firstly adding the rest water and hydrogen peroxide in corresponding proportion into a reaction pot, starting a stirrer to fully stir, then adding the starch powder prepared by S2 into the reaction pot to disperse the starch powder uniformly, continuing to stir for 5-10min after the addition is finished, mixing the materials uniformly, S4, then taking 30% sodium hydroxide in corresponding proportion, adding water to prepare 10% solution, then adding the solution into a reaction pot of S3 under stirring, after the reaction is carried out for 1-2h, adding a corresponding proportion of defoaming agent, supplementing 200 kg of water after most of foam disappears, measuring the viscosity of the mixture for 60 seconds to achieve the required oxidation degree, S5, then supplementing 200 kg of water into the reaction kettle, measuring the initial viscosity of the mixture for 30 seconds, preparing a 20% solution from a corresponding proportion of crosslinking agent by using 70-75 ℃ hot water, adding the solution into the reaction material under stirring, measuring the final viscosity of the reaction material for 50 seconds, S6, then taking a corresponding proportion of sodium thiosulfate to prepare a 10% solution, adding the solution into the reaction material under stirring to terminate the reaction, then selecting a terminator with a corresponding proportion to prepare a 10% solution, adding the solution into the S5 reaction material under stirring to terminate the reaction, thus preparing the environment-friendly starch adhesive, greatly improving the environmental protection of the starch adhesive production process, and realizing the extraction and utilization of starch by recovered waste crops, the purpose of producing the high-quality starch adhesive on the premise of energy conservation and environmental protection is well achieved, and meanwhile, the preparation process of the starch adhesive is improved, so that the water resistance, the storage stability and the moisture and mildew resistance of the starch adhesive are improved, and the normal use of the starch adhesive is ensured.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The embodiment of the invention provides three technical schemes: a processing technology of an environment-friendly starch adhesive specifically comprises the following embodiments:
example 1
S1, firstly, selecting damaged and rotten raw materials for producing cassava, sweet potatoes or potato starch which cannot be eaten and are poured into a cleaning machine to be rinsed for 3 times, then pouring the rinsed raw materials for producing starch into a boiler, then adding corresponding clear water until the raw materials for producing starch are completely immersed in the liquid surface of the clear water, and then heating the boiler to boil the clear water in the boiler for 25min until the raw materials for producing starch are completely cooked;
s2, putting the cooked starch production raw material S1 into a dryer, drying for 1.5 hours at the temperature of 100 ℃, and then crushing and grinding to obtain the required starch powder;
s3, adding the balance of water and corresponding 25 parts of hydrogen peroxide into the reaction pot, starting a stirrer to fully stir, adding 70 parts of starch powder prepared in the step S2 into the reaction pot to uniformly disperse, and continuing to stir for 7min after the addition is finished to uniformly mix the materials;
s4, adding 7 parts of 30% sodium hydroxide into water to prepare a 10% solution, adding the solution into a reaction kettle S3 under stirring, reacting for 1.5h, adding 7 parts of defoaming agent, adding 200 kg of water after most of foam disappears, and measuring the viscosity of the solution to be 60 seconds to achieve the required oxidation degree;
s5, adding 200 kg of water into the reaction kettle, measuring the initial viscosity for 30 seconds, preparing 15 parts of cross-linking agent into 20% solution by using 73 ℃ hot water, adding the solution into the reaction materials under stirring, and measuring the final viscosity for 50 seconds;
s6, taking 3 parts of sodium thiosulfate to prepare a 10% solution, adding the solution into the reaction materials under stirring to terminate the reaction, selecting 3 parts of terminator to prepare a 10% solution, and adding the solution into the S5 reaction materials under stirring to terminate the reaction, thereby obtaining the environment-friendly starch adhesive.
Example 2
S1, firstly, selecting damaged and rotten raw materials for producing cassava, sweet potatoes or potato starch which cannot be eaten and are poured into a cleaning machine for rinsing for 4 times, then pouring the rinsed raw materials for producing starch into a boiler, then adding corresponding clear water until the raw materials for producing starch are completely immersed in the liquid surface of the clear water, and then heating the boiler to boil the clear water in the boiler for 30min until the raw materials for producing starch are completely cooked;
s2, putting the cooked starch production raw material S1 into a dryer, drying for 1h at the temperature of 90 ℃, and then crushing and grinding to obtain the required starch powder;
s3, adding the balance of water and 20 parts of hydrogen peroxide into the reaction pot, starting a stirrer to fully stir, adding 50 parts of starch powder prepared in the step S2 into the reaction pot to uniformly disperse, and continuing to stir for 5min after the addition is finished to uniformly mix the materials;
s4, adding water into 5 parts of 30% sodium hydroxide to prepare a 10% solution, adding the solution into a reaction kettle S3 under stirring, reacting for 1 hour, adding 5 parts of a defoaming agent, supplementing 200 kg of water after most of foam disappears, and measuring the viscosity of the mixture to be 60 seconds to achieve the required oxidation degree;
s5, adding 200 kg of water into the reaction kettle, measuring the initial viscosity for 30 seconds, preparing 10 parts of cross-linking agent into a 20% solution by using 70 ℃ hot water, adding the solution into the reaction material under stirring, and measuring the final viscosity for 50 seconds;
s6, taking 1 part of corresponding sodium thiosulfate to prepare a 10% solution, adding the solution into the reaction materials under stirring to terminate the reaction, selecting 1 part of corresponding terminator to prepare a 10% solution, and adding the solution into the S5 reaction materials under stirring to terminate the reaction, thereby obtaining the environment-friendly starch adhesive.
Example 3
S1, firstly, selecting damaged and rotten raw materials for producing cassava, sweet potatoes or potato starch which cannot be eaten and are poured into a cleaning machine to be rinsed for 3 times, then pouring the rinsed raw materials for producing starch into a boiler, then adding corresponding clear water until the raw materials for producing starch are completely immersed in the liquid surface of the clear water, and then heating the boiler to boil the clear water in the boiler for 40min until the raw materials for producing starch are completely cooked;
s2, putting the cooked starch production raw material S1 into a dryer, drying for 2 hours at the temperature of 110 ℃, and then crushing and grinding to obtain the required starch powder;
s3, adding the balance of water and 30 parts of corresponding hydrogen peroxide into the reaction pot, starting a stirrer to fully stir, adding 80 parts of starch powder prepared in the step S2 into the reaction pot to uniformly disperse, and continuing stirring for 10min after the addition is finished to uniformly mix the materials;
s4, adding 10 parts of 30% sodium hydroxide into water to prepare a 10% solution, adding the solution into a reaction kettle S3 under stirring, reacting for 2 hours, adding 10 parts of a defoaming agent, adding 200 kg of water after most of foams disappear, and measuring the viscosity of the mixture to be 60 seconds to achieve the required oxidation degree;
s5, adding 200 kg of water into the reaction kettle, measuring the initial viscosity for 30 seconds, preparing 20 parts of cross-linking agent into 20% solution by using 75 ℃ hot water, adding the solution into the reaction materials under stirring, and measuring the final viscosity for 50 seconds;
s6, preparing a 10% solution from 5 parts of corresponding sodium thiosulfate, adding the solution into the reaction materials under stirring to terminate the reaction, preparing a 10% solution from 5 parts of corresponding terminating agent, and adding the solution into the S5 reaction materials under stirring to terminate the reaction, thereby obtaining the environment-friendly starch adhesive.
Effects of the embodiment
A certain material manufacturer produces the environment-friendly starch adhesive by adopting the method of the embodiment 1-3 of the invention, so that the mass production cost is saved, the water resistance, the storage stability and the moisture and mildew resistance of the starch adhesive are effectively improved, and the use of the environment-friendly starch adhesive is greatly promoted.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (9)
1. An environment-friendly starch adhesive is characterized in that: the raw materials comprise the following components in parts by weight: 50-80 parts of starch, 20-30 parts of hydrogen peroxide, 5-10 parts of sodium hydroxide, 10-20 parts of a cross-linking agent, 1-5 parts of sodium thiosulfate, 5-10 parts of a defoaming agent, 1-5 parts of a terminating agent and the balance of clear water.
2. The environment-friendly starch adhesive as claimed in claim 1, wherein: the raw materials comprise the following components: 70 parts of starch, 25 parts of hydrogen peroxide, 7 parts of sodium hydroxide, 15 parts of a cross-linking agent, 3 parts of sodium thiosulfate, 7 parts of a defoaming agent, 3 parts of a terminating agent and the balance of clear water.
3. The environment-friendly starch adhesive as claimed in claim 1, wherein: the raw materials comprise the following components: 50 parts of starch, 20 parts of hydrogen peroxide, 5 parts of sodium hydroxide, 10 parts of a cross-linking agent, 1 part of sodium thiosulfate, 5 parts of a defoaming agent, 1 part of a terminating agent and the balance of clear water.
4. The environment-friendly starch adhesive as claimed in claim 1, wherein: the raw materials comprise the following components: 80 parts of starch, 30 parts of hydrogen peroxide, 10 parts of sodium hydroxide, 20 parts of a cross-linking agent, 5 parts of sodium thiosulfate, 10 parts of a defoaming agent, 5 parts of a terminating agent and the balance of clear water.
5. The environment-friendly starch adhesive according to any one of claims 1 to 4, wherein: the cross-linking agent is one or a combination of more of borax, hydroxyethyl acrylate, hydroxypropyl methacrylate, N-methylolacrylamide or diacetone acrylamide.
6. The environment-friendly starch adhesive according to any one of claims 1 to 4, wherein: the defoaming agent is one or a combination of more of boron emulsified silicone oil, polyoxyethylene polyoxypropylene pentaerythritol ether, polyoxyethylene polyoxypropylene amine ether, polyoxypropylene glycerol ether and polydimethylsiloxane.
7. The environment-friendly starch adhesive according to any one of claims 1 to 4, wherein: the terminating agent is one or the combination of more of wood tar, sodium dimethyldithiocarbamate, sodium polysulfide and sodium nitrite.
8. The environment-friendly starch adhesive according to any one of claims 1 to 4, wherein: the starch is extracted from the group consisting of damaged, rotted and inedible tapioca, sweet potato or potato.
9. The environment-friendly starch adhesive according to any one of claims 1 to 8, wherein: the processing technology comprises the following steps:
s1, firstly, selecting damaged, rotten and unsalable raw materials for producing cassava, sweet potatoes or potato starch, pouring the raw materials into a cleaning machine for rinsing for 3-4 times, then pouring the rinsed raw materials for producing starch into a boiler, then adding corresponding clean water until the raw materials for producing starch are completely immersed in the liquid surface of the clean water, and then heating the boiler to boil the clean water in the boiler for 30-40min until the raw materials for producing starch are completely cooked;
s2, putting the cooked starch production raw material S1 into a dryer, drying for 1-2 hours at the temperature of 90-110 ℃, and then crushing and grinding to obtain the required starch powder;
s3, adding the balance of water and hydrogen peroxide in corresponding proportion into the reaction pot, starting a stirrer to fully stir, adding the starch powder prepared in the step S2 into the reaction pot to uniformly disperse, and continuing to stir for 5-10min after the addition is finished to uniformly mix the materials;
s4, adding 30% of sodium hydroxide in corresponding proportion into water to prepare 10% solution, then adding the solution into a reaction pot of S3 while stirring, reacting for 1-2h, adding 200 kg of defoaming agent in corresponding proportion, supplementing 200 kg of water after most of foam disappears, and measuring the viscosity of the solution for 60 seconds to reach the required oxidation degree;
s5, adding 200 kg of water into the reaction kettle, measuring the initial viscosity for 30 seconds, preparing a 20% solution of the cross-linking agent by using hot water at 70-75 ℃, adding the solution into the reaction materials under stirring, and measuring the final viscosity for 50 seconds;
s6, preparing a 10% solution from sodium thiosulfate in a corresponding proportion, adding the solution into the reaction materials under stirring to terminate the reaction, selecting a terminator in a corresponding proportion to prepare a 10% solution, and adding the solution into the S5 reaction materials under stirring to terminate the reaction, thereby obtaining the environment-friendly starch adhesive.
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| CN201911137376.6A CN110903780A (en) | 2019-11-19 | 2019-11-19 | Environment-friendly starch adhesive and processing technology thereof |
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| CN113528029A (en) * | 2021-07-16 | 2021-10-22 | 马鞍山市康辉纸箱纸品有限公司 | Adhesive for preprinted roll paper of corrugated case and preparation method thereof |
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| CN113528029A (en) * | 2021-07-16 | 2021-10-22 | 马鞍山市康辉纸箱纸品有限公司 | Adhesive for preprinted roll paper of corrugated case and preparation method thereof |
| CN113528029B (en) * | 2021-07-16 | 2023-10-10 | 马鞍山市康辉纸箱纸品有限公司 | Adhesive for preprinting roll paper of corrugated case and preparation method thereof |
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