CN113214910A - Double-effect plate cleaning liquid for removing dirt and scratches of printing plate and preparation method thereof - Google Patents
Double-effect plate cleaning liquid for removing dirt and scratches of printing plate and preparation method thereof Download PDFInfo
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- CN113214910A CN113214910A CN202110489734.0A CN202110489734A CN113214910A CN 113214910 A CN113214910 A CN 113214910A CN 202110489734 A CN202110489734 A CN 202110489734A CN 113214910 A CN113214910 A CN 113214910A
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- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
- C11D1/02—Anionic compounds
- C11D1/12—Sulfonic acids or sulfuric acid esters; Salts thereof
- C11D1/22—Sulfonic acids or sulfuric acid esters; Salts thereof derived from aromatic compounds
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J13/00—Colloid chemistry, e.g. the production of colloidal materials or their solutions, not otherwise provided for; Making microcapsules or microballoons
- B01J13/0052—Preparation of gels
- B01J13/0065—Preparation of gels containing an organic phase
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B33/00—Silicon; Compounds thereof
- C01B33/113—Silicon oxides; Hydrates thereof
- C01B33/12—Silica; Hydrates thereof, e.g. lepidoic silicic acid
- C01B33/14—Colloidal silica, e.g. dispersions, gels, sols
- C01B33/141—Preparation of hydrosols or aqueous dispersions
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- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B33/00—Silicon; Compounds thereof
- C01B33/113—Silicon oxides; Hydrates thereof
- C01B33/12—Silica; Hydrates thereof, e.g. lepidoic silicic acid
- C01B33/14—Colloidal silica, e.g. dispersions, gels, sols
- C01B33/146—After-treatment of sols
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- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B33/00—Silicon; Compounds thereof
- C01B33/113—Silicon oxides; Hydrates thereof
- C01B33/12—Silica; Hydrates thereof, e.g. lepidoic silicic acid
- C01B33/14—Colloidal silica, e.g. dispersions, gels, sols
- C01B33/155—Preparation of hydroorganogels or organogels
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- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
- C11D3/02—Inorganic compounds ; Elemental compounds
- C11D3/04—Water-soluble compounds
- C11D3/042—Acids
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- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
- C11D3/02—Inorganic compounds ; Elemental compounds
- C11D3/12—Water-insoluble compounds
- C11D3/124—Silicon containing, e.g. silica, silex, quartz or glass beads
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- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
- C11D3/02—Inorganic compounds ; Elemental compounds
- C11D3/12—Water-insoluble compounds
- C11D3/124—Silicon containing, e.g. silica, silex, quartz or glass beads
- C11D3/1246—Silicates, e.g. diatomaceous earth
- C11D3/1253—Layer silicates, e.g. talcum, kaolin, clay, bentonite, smectite, montmorillonite, hectorite or attapulgite
- C11D3/1266—Layer silicates, e.g. talcum, kaolin, clay, bentonite, smectite, montmorillonite, hectorite or attapulgite in liquid compositions
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- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
- C11D3/16—Organic compounds
- C11D3/18—Hydrocarbons
- C11D3/182—Hydrocarbons branched
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- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
- C11D3/16—Organic compounds
- C11D3/20—Organic compounds containing oxygen
- C11D3/2075—Carboxylic acids-salts thereof
- C11D3/2086—Hydroxy carboxylic acids-salts thereof
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- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
- C11D3/16—Organic compounds
- C11D3/20—Organic compounds containing oxygen
- C11D3/2093—Esters; Carbonates
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- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
- C11D3/16—Organic compounds
- C11D3/20—Organic compounds containing oxygen
- C11D3/22—Carbohydrates or derivatives thereof
- C11D3/221—Mono, di- or trisaccharides or derivatives thereof
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- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
- C11D3/16—Organic compounds
- C11D3/20—Organic compounds containing oxygen
- C11D3/22—Carbohydrates or derivatives thereof
- C11D3/222—Natural or synthetic polysaccharides, e.g. cellulose, starch, gum, alginic acid or cyclodextrin
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- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
- C11D3/16—Organic compounds
- C11D3/20—Organic compounds containing oxygen
- C11D3/22—Carbohydrates or derivatives thereof
- C11D3/222—Natural or synthetic polysaccharides, e.g. cellulose, starch, gum, alginic acid or cyclodextrin
- C11D3/225—Natural or synthetic polysaccharides, e.g. cellulose, starch, gum, alginic acid or cyclodextrin etherified, e.g. CMC
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- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
- C11D3/16—Organic compounds
- C11D3/26—Organic compounds containing nitrogen
- C11D3/30—Amines; Substituted amines ; Quaternized amines
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- C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
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- C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
- C11D3/16—Organic compounds
- C11D3/37—Polymers
- C11D3/3746—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- C11D3/3753—Polyvinylalcohol; Ethers or esters thereof
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- C11D3/48—Medical, disinfecting agents, disinfecting, antibacterial, germicidal or antimicrobial compositions
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Abstract
The invention relates to the technical field of PS/CTP printing, in particular to a dual-effect plate cleaning solution for removing dirt and scratches of a printing plate and a preparation method thereof; the composition is prepared from the following raw materials in parts by weight: 1.0-1.5 parts of Arabic gum, 0.5-0.8 part of polyvinyl alcohol, 0.8-1.3 parts of hydroxyethyl cellulose, 0.53-0.65 part of nano potassium feldspar powder, 0.7-1.2 parts of sodium dodecyl benzene sulfonate, 0.3-0.45 part of castor oil, 0.2-0.4 part of squalane, 0.7-1.2 parts of repair auxiliary agent, 0.4-0.5 part of dimethyl sulfate, 0.32-0.38 part of dextrin, 0.3-0.35 part of citric acid, 1.0-1.5 parts of phosphoric acid, 0.4-0.5 part of triethanolamine, 0.4-0.7 part of D-mannitol and 40-50 parts of deionized water; the plate cleaning liquid prepared by the invention not only has good decontamination and antibacterial functions, but also has certain effects of protecting the surface of the printing plate and repairing scratches on the surface of the printing plate, thereby ensuring the safety and the quality of the printing plate.
Description
Technical Field
The invention relates to the technical field of PS/CTP printing, in particular to a dual-effect plate cleaning solution for removing dirt and scratches of a printing plate and a preparation method thereof.
Background
Printing is a technique of transferring ink to the surface of a material such as paper, fabric, or leather by performing processes such as plate making, inking, and pressing on an original such as characters, pictures, or photographs, thereby mass-transferring the contents of the original. Printing in the simple sense is the process of transferring the graphic information on an original to a substrate using a printing plate or other means, and may also be understood as a reproduction process using an analog or digital image carrier to transfer a colorant/pigment (e.g. ink) to the substrate.
Currently, plate cleaning liquid is often needed in the printing field. The plate cleaning liquid is a daily cleaning and scratch remover for PS plates/CTP plates, and mainly has the functions of removing residual ink, scratches, oxides, oil stains and other components on the plate surface to ensure the clarity of printed images and prolong the service life of printing plates.
However, the currently marketed plate cleaning liquid only has the function of removing oil stains on the plate surface, and cannot play a certain role in protecting and repairing the plate surface. In addition, the existing plate cleaning liquid has relatively poor antibacterial performance, and the service life of the plate cleaning liquid is influenced.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides the dual-effect plate cleaning liquid for removing dirt and scratches of the printing plate and the preparation method thereof.
In order to achieve the purpose, the invention provides the following technical scheme:
a double-effect plate cleaning liquid for removing dirt and scratches of a printing plate is prepared from the following raw materials in parts by weight: 1.0-1.5 parts of Arabic gum, 0.5-0.8 part of polyvinyl alcohol, 0.8-1.3 parts of hydroxyethyl cellulose, 0.53-0.65 part of nano potassium feldspar powder, 0.7-1.2 parts of sodium dodecyl benzene sulfonate, 0.3-0.45 part of castor oil, 0.2-0.4 part of squalane, 0.7-1.2 parts of repair auxiliary agent, 0.4-0.5 part of dimethyl sulfate, 0.32-0.38 part of dextrin, 0.3-0.35 part of citric acid, 1.0-1.5 parts of phosphoric acid, 0.4-0.5 part of triethanolamine, 0.4-0.7 part of D-mannitol and 40-50 parts of deionized water.
Furthermore, the preparation method of the repair aid comprises the following steps:
i, and according to the mass ratio of 1: 0.25-0.5: 6-9, accurately weighing a proper amount of tetraethyl silicate, dimethyl dimethoxysilane and absolute ethyl alcohol, mechanically and uniformly mixing, transferring the obtained mixed solution into an ice-water bath, and adding a proper amount of acid solution into the mixed solution while stirring to uniformly mix the acid solution and the mixed solution; the mixed components formed by the two components are stirred and mixed for reaction for 2-5 h; after the reaction is finished, obtaining silicon dioxide sol;
II, adding 8-12% of compound antibacterial agent by mass into the obtained silica sol under the condition of stirring, and mechanically stirring to uniformly disperse the compound antibacterial agent in the silica sol; before silica sol gel, placing the silica sol on the surface of a polytetrafluoroethylene material in a needle cylinder dropping or spraying mode, and standing to form microspherical wet gel;
III, after the wet gel is formed, transferring the obtained spherical wet gel into deionized water, and after separation, soaking the spherical wet gel in an organic solvent; and then sequentially carrying out the working procedures of aging, replacement, surface modification, cleaning and drying to finally obtain the finished product of the repair auxiliary agent.
Further, in the step I, the acid solution is a nitric acid solution with a concentration of 1.0-1.6 mol/L, and the ratio of the amount of nitric acid to the amount of tetraethyl silicate in the acid solution is 0.05-0.1: 1.
furthermore, in the step II, the compound antibacterial agent is prepared from a quaternary ammonium salt bactericide and octyl isothiazolinone in a mass ratio of 1.8-2.5: 1 are mixed to prepare the medicine.
Furthermore, the quaternary ammonium salt bactericide is any one of didecyl dimethyl ammonium chloride and dodecyl benzyl dimethyl ammonium chloride.
Furthermore, in the step iii, the aging process is as follows: and (3) carrying out aging treatment on the obtained wet gel by adopting an ethanol solution with the volume concentration of 35-50%.
Furthermore, in the step iii, in the displacement step, n-hexane or acetone is used to displace the spherical gel after the aging treatment, wherein the number of times of displacement is 2-3, and the displacement time is 5-7 h.
Furthermore, in the step III, in the surface modification procedure, trimethylchlorosilane and n-heptane are uniformly mixed according to the volume ratio of 2-4: 10, and then the obtained spherical gel is soaked in the obtained mixed liquid for 2-3 times, wherein the soaking time is 3-6 hours each time.
Furthermore, in the step III, the gel obtained is dried by a carbon dioxide critical drying method or an atmospheric drying method.
A preparation method of a double-effect plate cleaning solution for removing dirt and scratches of a printing plate comprises the following steps:
weighing the raw materials according to the two formulas respectively, adding deionized water into mixing equipment, raising the temperature of water obtained in the mixing equipment to 50-60 ℃, adding Arabic gum, polyvinyl alcohol and hydroxyethyl cellulose into the mixing equipment, stirring at a low speed of 200-400 r/min for 2-3 h, and stirring at a high speed of 1000-1500 r/min for 2-3 h; then transferring the rest raw materials into mixing equipment, and continuously mechanically stirring at the speed of 800-1000 r/min for 1-2 h; and after stirring, naturally cooling the obtained material to room temperature, and sieving the cooled material with a 400-500-mesh sieve to obtain the finished product of the dual-effect plate cleaning liquid for removing dirt and scratches of the printing plate.
Advantageous effects
Compared with the known public technology, the technical scheme provided by the invention has the following beneficial effects:
1. the invention uses the tetraethyl silicate and dimethyl dimethoxy silane agent as the main raw material for preparing the repair assistant; adding tetraethyl silicate and dimethyl dimethoxysilane into ethanol, transferring the obtained mixed solution into an ice-water bath, and then adding a proper amount of nitric acid solution to finally hydrolyze the tetraethyl silicate so as to prepare a finished product of the silica sol. Then adding a proper amount of compound antibacterial agent into the silica sol, and preparing the silica sol into microspherical wet gel in a syringe dripping or spraying mode. The prepared microspherical wet gel is subjected to the working procedures of aging, replacement, surface modification, cleaning and drying in sequence; finally, spherical silicon dioxide sol with the particle size range of 3-10 mu m, namely the repair aid, is prepared.
The obtained spherical silica sol contains a certain amount of quaternary ammonium salt bactericide and octyl isothiazolinone, and the quaternary ammonium salt bactericide and the octyl isothiazolinone are used as raw materials of the plate cleaning liquid, so that the plate cleaning liquid has good antibacterial performance. The quality and quality of the plate cleaning liquid are effectively ensured;
moreover, the use of the spherical silica sol enables the plate cleaning solution provided by the invention to be uniformly coated on the surface of the printing plate, and a layer of protective film can be formed on the surface of the printing plate after curing, so that the protective film not only can tightly cover the surface of the printing plate, but also can isolate the surface oxide layer from directly contacting with air. Moreover, because the silica sol is of a spherical structure, the probability that the surface of the printing plate is scratched or scratched can be effectively reduced, and the safety and the quality of the printing plate are ensured.
2. The sodium dodecyl benzene sulfonate agent and the citric acid are used in combination, so that a good decontamination effect can be achieved, dirt on the surface of a printing plate can be effectively removed, and the cleanness of the surface of the printing plate is ensured. Furthermore, the squalane agent D-mannitol can play a certain moisturizing effect when being used together. The protective film is matched with polyvinyl alcohol and hydroxyethyl cellulose, so that the plate cleaning liquid forms a uniform, continuous and smooth protective film on the surface of a printing plate on foot, the film forming property is good, the printing plate is smooth and non-porous, and the printing plate is effectively protected from net falling. In addition, the dimethyl sulfate and the repair assistant can generate mutual synergy, can effectively repair scratches on the surface of the printing plate, ensures the continuous use of the printing plate, prolongs the service life of the printing plate and saves the cost.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below. It is to be understood that the embodiments described are only a few 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 present invention will be further described with reference to the following examples.
Example 1
A double-effect plate cleaning liquid for removing dirt and scratches of a printing plate is prepared from the following raw materials in parts by weight: 1.0 part of Arabic gum, 0.5 part of polyvinyl alcohol, 0.8 part of hydroxyethyl cellulose, 0.53 part of nano potassium feldspar powder, 0.7 part of sodium dodecyl benzene sulfonate, 0.3 part of castor oil, 0.2 part of squalane, 0.7 part of repair auxiliary agent, 0.4 part of dimethyl sulfate, 0.32 part of dextrin, 0.3 part of citric acid, 1.0 part of phosphoric acid, 0.4 part of triethanolamine, 0.4 part of D-mannitol and 40 parts of deionized water.
The preparation method of the repair aid comprises the following steps:
i, and according to the mass ratio of 1: 0.25: 6, accurately weighing a proper amount of tetraethyl silicate, dimethyl dimethoxysilane and absolute ethyl alcohol, mechanically and uniformly mixing, transferring the obtained mixed solution into an ice-water bath, and adding a proper amount of acid solution into the mixed solution while stirring to uniformly mix the acid solution and the mixed solution; the mixed components formed by the two components are stirred and mixed for reaction for 2 hours; after the reaction is finished, obtaining silicon dioxide sol;
II, adding 8% of compound antibacterial agent by mass into the obtained silica sol under the condition of stirring, and mechanically stirring to uniformly disperse the compound antibacterial agent in the silica sol; before silica sol gel, placing the silica sol on the surface of a polytetrafluoroethylene material in a needle cylinder dropping or spraying mode, and standing to form microspherical wet gel;
III, after the wet gel is formed, transferring the obtained spherical wet gel into deionized water, and after separation, soaking the spherical wet gel in an organic solvent; and then sequentially carrying out the working procedures of aging, replacement, surface modification, cleaning and drying to finally obtain the finished product of the repair auxiliary agent.
In the step I, the acid solution is a nitric acid solution with the concentration of 1.0mol/L, and the quantity ratio of nitric acid to tetraethyl silicate in the acid solution is 0.05: 1.
in the step II, the compound antibacterial agent is prepared from a quaternary ammonium salt bactericide and octyl isothiazolinone in a mass ratio of 1.8: 1 are mixed to prepare the medicine.
The quaternary ammonium salt bactericide is selected from didecyl dimethyl ammonium chloride.
In the step III, the aging treatment process comprises the following steps: the resulting wet gel was aged with a 35% by volume ethanol solution.
In the step III, in the replacement process, n-hexane or acetone is adopted to replace the spherical gel after the aging treatment, wherein the replacement frequency is 2 times, and the replacement time is 5 hours each time.
In the step III, in the surface modification procedure, trimethylchlorosilane and n-heptane are uniformly mixed according to the volume ratio of 2:10, and then the obtained spherical gel is soaked in the obtained mixed solution for 2 times, wherein the soaking time is 3 hours each time.
And step III, drying the obtained gel by adopting a carbon dioxide critical drying method or a normal pressure drying method.
A preparation method of a double-effect plate cleaning solution for removing dirt and scratches of a printing plate comprises the following steps:
weighing the raw materials according to the two formulas respectively, adding deionized water into a mixing device, raising the temperature of water obtained in the mixing device to 50 ℃, adding arabic gum, polyvinyl alcohol and hydroxyethyl cellulose into the mixing device, stirring at a low speed of 200r/min for 2 hours, and then stirring at a high speed of 1000r/min for 2 hours; then transferring the rest raw materials into mixing equipment, and continuously mechanically stirring at the speed of 800r/min for 1 h; and after stirring, naturally cooling the obtained material to room temperature, and sieving the cooled material with a 400-mesh sieve to obtain the finished product of the dual-effect plate cleaning liquid for removing dirt and scratches of the printing plate.
Example 2
The double-effect plate cleaning solution for removing dirt and scratches of the printing plate and the preparation method provided by the embodiment are substantially the same as those of the embodiment 1, and the main differences are as follows: the mixture ratio of the raw materials is different, and specifically comprises the following steps:
1.2 parts of Arabic gum, 0.6 part of polyvinyl alcohol, 1.0 part of hydroxyethyl cellulose, 0.6 part of nano potassium feldspar powder, 0.9 part of sodium dodecyl benzene sulfonate, 0.38 part of castor oil, 0.3 part of squalane, 1.0 part of repair auxiliary agent, 0.45 part of dimethyl sulfate, 0.35 part of dextrin, 0.32 part of citric acid, 1.2 parts of phosphoric acid, 0.45 part of triethanolamine, 0.5 part of D-mannitol and 45 parts of deionized water.
Example 3
The dual-purpose plate cleaning solution for removing dirt and scratches of the printing plate and the preparation method thereof provided by the embodiment are substantially the same as those of the embodiment 1, and the main difference is that the mixture ratio of the raw materials is different, specifically:
1.5 parts of Arabic gum, 0.8 part of polyvinyl alcohol, 1.3 parts of hydroxyethyl cellulose, 0.65 part of nano potassium feldspar powder, 1.2 parts of sodium dodecyl benzene sulfonate, 0.45 part of castor oil, 0.4 part of squalane, 1.2 parts of a repair aid, 0.5 part of dimethyl sulfate, 0.38 part of dextrin, 0.35 part of citric acid, 1.5 parts of phosphoric acid, 0.5 part of triethanolamine, 0.7 part of D-mannitol and 50 parts of deionized water.
Comparative example 1
The double-effect plate cleaning solution for removing dirt and scratches of the printing plate and the preparation method provided by the embodiment are substantially the same as those of the embodiment 1, and the main differences are as follows: the raw materials do not contain the repair auxiliary agent provided by the invention;
comparative example 2
The double-effect plate cleaning solution for removing dirt and scratches of the printing plate and the preparation method provided by the embodiment are substantially the same as those of the embodiment 1, and the main differences are as follows: the raw materials do not contain dimethyl sulfate;
performance testing
Taking the same amount of the plate cleaning liquid prepared in the embodiments 1-3 and the comparative examples 1-2, and carrying out performance detection on each group of plate cleaning liquid samples, wherein the detection method comprises the following steps:
TABLE 1
By analyzing and comparing the relevant data in the table above, it can be seen that: the plate cleaning solution prepared by the invention has good decontamination and antibacterial functions, can protect the surface of the printing plate to a certain extent and repair scratches on the surface of the printing plate, ensures the safety and quality of the printing plate, and has good market competitiveness. Therefore, the plate cleaning solution prepared by the invention has wider market prospect and is more suitable for popularization.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the corresponding technical solutions.
Claims (10)
1. The double-effect plate cleaning liquid for removing dirt and scratches of a printing plate is characterized by being prepared from the following component raw materials in parts by weight: 1.0-1.5 parts of Arabic gum, 0.5-0.8 part of polyvinyl alcohol, 0.8-1.3 parts of hydroxyethyl cellulose, 0.53-0.65 part of nano potassium feldspar powder, 0.7-1.2 parts of sodium dodecyl benzene sulfonate, 0.3-0.45 part of castor oil, 0.2-0.4 part of squalane, 0.7-1.2 parts of repair auxiliary agent, 0.4-0.5 part of dimethyl sulfate, 0.32-0.38 part of dextrin, 0.3-0.35 part of citric acid, 1.0-1.5 parts of phosphoric acid, 0.4-0.5 part of triethanolamine, 0.4-0.7 part of D-mannitol and 40-50 parts of deionized water.
2. The dual-purpose plate cleaning solution for removing dirt and scratches of a printing plate according to claim 1, wherein the preparation method of the repairing auxiliary agent comprises the following steps:
i, and according to the mass ratio of 1: 0.25-0.5: 6-9, accurately weighing a proper amount of tetraethyl silicate, dimethyl dimethoxysilane and absolute ethyl alcohol, mechanically and uniformly mixing, transferring the obtained mixed solution into an ice-water bath, and adding a proper amount of acid solution into the mixed solution while stirring to uniformly mix the acid solution and the mixed solution; the mixed components formed by the two components are stirred and mixed for reaction for 2-5 h; after the reaction is finished, obtaining silicon dioxide sol;
II, adding 8-12% of compound antibacterial agent by mass into the obtained silica sol under the condition of stirring, and mechanically stirring to uniformly disperse the compound antibacterial agent in the silica sol; before silica sol gel, placing the silica sol on the surface of a polytetrafluoroethylene material in a needle cylinder dropping or spraying mode, and standing to form microspherical wet gel;
III, after the wet gel is formed, transferring the obtained spherical wet gel into deionized water, and after separation, soaking the spherical wet gel in an organic solvent; and then sequentially carrying out the working procedures of aging, replacement, surface modification, cleaning and drying to finally obtain the finished product of the repair auxiliary agent.
3. The dual-purpose plate cleaning solution for removing dirt and scratches of a printing plate according to claim 2, is characterized in that: in the step I, the acid solution is a nitric acid solution with the concentration of 1.0-1.6 mol/L, and the amount ratio of nitric acid to tetraethyl silicate in the acid solution is 0.05-0.1: 1.
4. the dual-purpose plate cleaning solution for removing dirt and scratches of a printing plate according to claim 2, is characterized in that: in the step II, the compound antibacterial agent is prepared from a quaternary ammonium salt bactericide and octyl isothiazolinone in a mass ratio of 1.8-2.5: 1 are mixed to prepare the medicine.
5. The dual-purpose plate cleaning solution for removing dirt and scratches of a printing plate according to claim 3, is characterized in that: the quaternary ammonium salt bactericide is any one of didecyl dimethyl ammonium chloride and dodecyl benzyl dimethyl ammonium chloride.
6. The dual-purpose plate cleaning solution for removing dirt and scratches of a printing plate according to claim 2, is characterized in that: in the step III, the aging treatment process comprises the following steps: and (3) carrying out aging treatment on the obtained wet gel by adopting an ethanol solution with the volume concentration of 35-50%.
7. The dual-purpose plate cleaning solution for removing dirt and scratches of a printing plate according to claim 2, is characterized in that: and in the step III, in the replacement process, replacing the spherical gel subjected to the aging treatment by using normal hexane or acetone, wherein the number of times of replacement is 2-3, and the time of replacement is 5-7 hours each time.
8. The dual-purpose plate cleaning solution for removing dirt and scratches of a printing plate according to claim 2, is characterized in that: in the step III, in the surface modification procedure, trimethylchlorosilane and n-heptane are uniformly mixed according to the volume ratio of 2-4: 10, and then the obtained spherical gel is soaked in the obtained mixed liquid for 2-3 times, wherein the soaking time is 3-6 hours each time.
9. The dual-purpose plate cleaning solution for removing dirt and scratches of a printing plate according to claim 2, is characterized in that: and in the step III, drying the obtained gel by adopting a carbon dioxide critical drying method or a normal pressure drying method.
10. The preparation method of the dual-purpose plate cleaning solution for removing dirt and scratches of the printing plate according to any one of claims 1 to 9 is characterized by comprising the following steps of:
weighing the raw materials according to the two formulas respectively, adding deionized water into mixing equipment, raising the temperature of water obtained in the mixing equipment to 50-60 ℃, adding Arabic gum, polyvinyl alcohol and hydroxyethyl cellulose into the mixing equipment, stirring at a low speed of 200-400 r/min for 2-3 h, and stirring at a high speed of 1000-1500 r/min for 2-3 h; then transferring the rest raw materials into mixing equipment, and continuously mechanically stirring at the speed of 800-1000 r/min for 1-2 h; and after stirring, naturally cooling the obtained material to room temperature, and sieving the cooled material with a 400-500-mesh sieve to obtain the finished product of the dual-effect plate cleaning liquid for removing dirt and scratches of the printing plate.
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