CN113025121B - Oxygen-blocking fresh-keeping anti-corrosion water-based plastic printing ink and preparation method thereof - Google Patents
Oxygen-blocking fresh-keeping anti-corrosion water-based plastic printing ink and preparation method thereof Download PDFInfo
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 60
- 238000007639 printing Methods 0.000 title claims abstract description 37
- 229920003023 plastic Polymers 0.000 title claims abstract description 30
- 239000004033 plastic Substances 0.000 title claims abstract description 30
- 238000005260 corrosion Methods 0.000 title claims abstract description 22
- 238000002360 preparation method Methods 0.000 title abstract description 10
- 239000004925 Acrylic resin Substances 0.000 claims abstract description 61
- 229920000178 Acrylic resin Polymers 0.000 claims abstract description 61
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims abstract description 23
- 229920000728 polyester Polymers 0.000 claims abstract description 23
- 239000004372 Polyvinyl alcohol Substances 0.000 claims abstract description 21
- 229920002451 polyvinyl alcohol Polymers 0.000 claims abstract description 21
- IXPNQXFRVYWDDI-UHFFFAOYSA-N 1-methyl-2,4-dioxo-1,3-diazinane-5-carboximidamide Chemical compound CN1CC(C(N)=N)C(=O)NC1=O IXPNQXFRVYWDDI-UHFFFAOYSA-N 0.000 claims abstract description 20
- 235000010413 sodium alginate Nutrition 0.000 claims abstract description 20
- 239000000661 sodium alginate Substances 0.000 claims abstract description 20
- 229940005550 sodium alginate Drugs 0.000 claims abstract description 20
- 235000013305 food Nutrition 0.000 claims abstract description 19
- 239000000049 pigment Substances 0.000 claims abstract description 15
- 239000002002 slurry Substances 0.000 claims abstract description 15
- 239000004203 carnauba wax Substances 0.000 claims abstract description 14
- 235000013869 carnauba wax Nutrition 0.000 claims abstract description 14
- 238000000034 method Methods 0.000 claims abstract description 12
- 239000013530 defoamer Substances 0.000 claims abstract description 11
- 239000002994 raw material Substances 0.000 claims abstract description 10
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 4
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 4
- 239000010703 silicon Substances 0.000 claims abstract description 4
- 238000003756 stirring Methods 0.000 claims description 24
- 230000009477 glass transition Effects 0.000 claims description 8
- 239000007788 liquid Substances 0.000 claims description 8
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 6
- ROOXNKNUYICQNP-UHFFFAOYSA-N ammonium persulfate Chemical compound [NH4+].[NH4+].[O-]S(=O)(=O)OOS([O-])(=O)=O ROOXNKNUYICQNP-UHFFFAOYSA-N 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 6
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 claims description 4
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 claims description 4
- 235000007879 food anti-foaming agent Nutrition 0.000 claims description 4
- 239000000178 monomer Substances 0.000 claims description 4
- DBMJMQXJHONAFJ-UHFFFAOYSA-M Sodium laurylsulphate Chemical compound [Na+].CCCCCCCCCCCCOS([O-])(=O)=O DBMJMQXJHONAFJ-UHFFFAOYSA-M 0.000 claims description 3
- 125000001931 aliphatic group Chemical group 0.000 claims description 3
- 229910001870 ammonium persulfate Inorganic materials 0.000 claims description 3
- 239000012874 anionic emulsifier Substances 0.000 claims description 3
- 239000003795 chemical substances by application Substances 0.000 claims description 3
- -1 dimethyl chlorosiloxane Chemical class 0.000 claims description 3
- 238000000227 grinding Methods 0.000 claims description 3
- 229910052757 nitrogen Inorganic materials 0.000 claims description 3
- USHAGKDGDHPEEY-UHFFFAOYSA-L potassium persulfate Chemical compound [K+].[K+].[O-]S(=O)(=O)OOS([O-])(=O)=O USHAGKDGDHPEEY-UHFFFAOYSA-L 0.000 claims description 3
- 239000004576 sand Substances 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims 2
- 238000001816 cooling Methods 0.000 claims 1
- 230000001804 emulsifying effect Effects 0.000 claims 1
- 230000006378 damage Effects 0.000 abstract description 6
- 230000008569 process Effects 0.000 abstract description 6
- 230000036541 health Effects 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000003912 environmental pollution Methods 0.000 abstract description 2
- 230000002349 favourable effect Effects 0.000 abstract description 2
- 231100000252 nontoxic Toxicity 0.000 abstract description 2
- 230000003000 nontoxic effect Effects 0.000 abstract description 2
- 239000000126 substance Substances 0.000 description 8
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 7
- 239000001301 oxygen Substances 0.000 description 7
- 229910052760 oxygen Inorganic materials 0.000 description 7
- 239000000047 product Substances 0.000 description 5
- 239000011248 coating agent Substances 0.000 description 4
- 238000000576 coating method Methods 0.000 description 4
- 235000013399 edible fruits Nutrition 0.000 description 3
- 238000004321 preservation Methods 0.000 description 3
- 230000004888 barrier function Effects 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 238000004945 emulsification Methods 0.000 description 2
- 239000000839 emulsion Substances 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 238000004806 packaging method and process Methods 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000000988 bone and bone Anatomy 0.000 description 1
- 238000005536 corrosion prevention Methods 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 235000021022 fresh fruits Nutrition 0.000 description 1
- 229920001002 functional polymer Polymers 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 150000002576 ketones Chemical class 0.000 description 1
- 150000002632 lipids Chemical class 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 239000002985 plastic film Substances 0.000 description 1
- 229920006255 plastic film Polymers 0.000 description 1
- 125000005575 polycyclic aromatic hydrocarbon group Chemical group 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 238000010023 transfer printing Methods 0.000 description 1
Classifications
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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
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D11/00—Inks
- C09D11/02—Printing inks
- C09D11/10—Printing inks based on artificial resins
- C09D11/106—Printing inks based on artificial resins containing macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- C09D11/107—Printing inks based on artificial resins containing macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds from unsaturated acids or derivatives thereof
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F283/00—Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G
- C08F283/006—Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G on to polymers provided for in C08G18/00
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D11/00—Inks
- C09D11/02—Printing inks
- C09D11/03—Printing inks characterised by features other than the chemical nature of the binder
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D11/00—Inks
- C09D11/02—Printing inks
- C09D11/10—Printing inks based on artificial resins
- C09D11/106—Printing inks based on artificial resins containing macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- General Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Inks, Pencil-Leads, Or Crayons (AREA)
Abstract
The invention relates to an oxygen-blocking fresh-keeping anti-corrosion water-based plastic printing ink and a preparation method thereof, wherein the printing ink comprises the following raw materials in parts by weight: 10-40 parts of polyvinyl alcohol water-based acrylic resin, 5-30 parts of sodium alginate modified water-based acrylic resin, 5-25 parts of polyester modified acrylic resin, 20-30 parts of water-based environment-friendly pigment slurry, 1-5 parts of food organic silicon defoamer, 1-15 parts of carnauba wax and 5-30 parts of water. The printing ink is nontoxic and pollution-free, has no harmful gas release in the printing process, has little environmental pollution and can not cause harm to human health. The production process is simple to operate, can effectively reduce the production cost, and is favorable for popularization and application.
Description
Technical Field
The invention belongs to the technical field of functional polymer materials, relates to a water-based ink preparation technology, and in particular relates to an oxygen fresh-keeping anti-corrosion water-based plastic printing ink and a preparation method thereof.
Background
Along with the diversification of market demands, the requirements of people on packaging are also higher and higher, and the functional demands are also increasing. Investigation shows that in the field of food fresh-keeping, the packaging requirement for oxygen-blocking fresh-keeping and corrosion-preventing is continuously and rapidly increasing at a speed of more than 20%. The conventional way of preparing the oxygen-blocking fresh-keeping plastic film is to coat polyvinyl alcohol and acrylic acid on the film to prepare a coating with oxygen-blocking property, and then print the coating with ink, which increases the use cost of users. Along with the use of the water-based ink, part of the water-based ink can permeate to the pre-coated barrier coating to damage the integrity of the original coating, so that the plastic package does not have the functions of oxygen resistance, fresh preservation and corrosion resistance, and serious loss and influence on the mouthfeel of foods, fruits, fresh fruits and the like in the transportation, circulation and storage processes are caused. Meanwhile, as the traditional ink can release harmful substances such as ketone, lipid, polycyclic aromatic hydrocarbon and the like which are harmful to human bodies in the plastic printing process, the traditional ink not only can pollute the air and cause harm to the environment, but also can cause great threat to the health of the printing workers.
Disclosure of Invention
Aiming at the problems, the invention provides the oxygen-blocking fresh-keeping anti-corrosion water-based plastic printing ink which is nontoxic and pollution-free, has no release of harmful gas in the printing process, has small environmental pollution and can not cause harm to human health.
The invention further aims to provide the preparation method of the oxygen-blocking fresh-keeping anti-corrosion water-based plastic printing ink, which is simple to operate, can effectively reduce the production cost and is favorable for popularization and application.
The present invention achieves the above object by:
an oxygen-blocking fresh-keeping anti-corrosion water-based plastic printing ink comprises the following raw materials in parts by weight: 10-40 parts of polyvinyl alcohol water-based acrylic resin, 5-30 parts of sodium alginate modified water-based acrylic resin, 5-25 parts of polyester modified acrylic resin, 20-30 parts of water-based environment-friendly pigment slurry, 1-5 parts of food organic silicon defoamer, 1-15 parts of carnauba wax and 5-30 parts of water.
Wherein the polyvinyl alcohol aqueous acrylic resin is semitransparent liquid, the density is 1.2g/mL, the viscosity is 1200cps, the pH value is 7, and the glass transition temperature is 60 ℃.
Wherein the sodium alginate modified water-based acrylic resin is a milky semitransparent liquid, the molecular weight is 8600, the viscosity is 3500, the softening point is 165 ℃, and the glass transition temperature is 85 ℃.
Wherein the polyester modified acrylic resin is a milky semitransparent liquid, the molecular weight of the polyester modified acrylic resin is 3000-5500, and the glass transition temperature is 18-22 ℃.
The preparation method of the water-based plastic printing ink is characterized by comprising the following process steps:
the first step: adding the polyvinyl alcohol aqueous acrylic resin, the sodium alginate modified aqueous acrylic resin, the polyester modified acrylic resin and water into a batching cylinder according to the amount, stirring for 15 minutes at the stirring speed of 200-300 r/min for 15-20 minutes;
and a second step of: adding the water-based environment-friendly pigment slurry and the food defoamer under the stirring state, and continuously stirring for 20 minutes;
and a third step of: grinding the materials for one to three times by a sand mill at the constant temperature of 35 ℃;
fourth step: adding the carnauba wax agent in a stirring state, and continuously stirring for 10 minutes to prepare the oxygen-blocking fresh-keeping anti-corrosion water-based plastic printing ink;
fifth step: and detecting various technical indexes of the oxygen-blocking, fresh-keeping and corrosion-preventing water-based plastic printing ink.
Wherein the polyester modified acrylic resin is prepared by the following method: 200g of aliphatic PU-608 is put into a reactor, the reactor is replaced by nitrogen, then the reactor is vacuumized, the stirring rotating speed is started to 700-800 revolutions per minute, 0.25g of potassium persulfate and 4.2g of sodium dodecyl sulfate anionic emulsifier are put into the reactor during stirring, the temperature is raised to 55 ℃ for emulsification for 20 minutes, 44g of mixed monomer (30 g of methyl methacrylate, 2g of methacrylic acid and 12g of dimethyl chlorosiloxane) are added, 0.35g of ammonium persulfate is added, the internal temperature is raised to 85 ℃ for starting the reaction, when the internal temperature Wen Zhubu is raised to 90 ℃, the reaction is intense, after 1 minute, the internal temperature falls to 85 ℃, the constant temperature is kept at 85 ℃, after 30 minutes, the internal temperature is raised to 88 ℃ for curing for 30 minutes, and then the reaction is cooled to 35 ℃ for discharging.
The invention has the beneficial effects that: according to the invention, the polyvinyl alcohol water-based acrylic resin and the sodium alginate modified water-based acrylic resin are adopted, the side chain of the sodium alginate is reversely wound around the main bone, a compact cross-linked network structure is formed by hydrogen bonds and-COO-of polyester, the permeation of external air molecules is effectively prevented, the adhesion of a water ink film to a substrate is enhanced, the self-crosslinking of the polyvinyl alcohol water-based acrylic resin and the polyester modified acrylic resin is generated, the compact hydrophobic network structure is effectively prevented, the permeation of external water vapor molecules is effectively prevented, and all technical indexes of application performance reach the performances of oxygen resistance, freshness preservation and corrosion resistance. Meanwhile, no harmful substances are released in the printing process, the harm to human health is avoided, and the polyvinyl alcohol aqueous acrylic resin, the sodium alginate modified aqueous acrylic resin and the polyester modified acrylic resin are successfully adopted to be used for plastic printing, so that the novel application in the aspects of oxygen resistance, fresh keeping and corrosion prevention in the market at present is solved. The printing ink is used for printing plastics such as foods, fruits, fresh foods and the like, not only keeps the color of the foods bright and bright, but also can prolong the fresh taste of the foods, prevent decay and deterioration, and has wide market demand application prospect.
Detailed Description
Example 1
The oxygen-blocking fresh-keeping anti-corrosion water-based plastic printing ink comprises the following raw materials in parts by weight:
10 parts of polyvinyl alcohol aqueous acrylic resin, 30 parts of sodium alginate modified aqueous acrylic resin, 21 parts of polyester modified acrylic resin, 25 parts of aqueous environment-friendly pigment slurry, 1 part of food defoamer, 1 part of carnauba wax and 12 parts of water.
Example 2
The oxygen-blocking fresh-keeping anti-corrosion water-based plastic printing ink comprises the following raw materials in parts by weight:
15 parts of polyvinyl alcohol aqueous acrylic resin, 25 parts of sodium alginate modified aqueous acrylic resin, 15 parts of polyester modified acrylic resin, 23 parts of aqueous environment-friendly pigment slurry, 2 parts of food organosilicon defoamer, 1 part of carnauba wax and 19 parts of water.
Example 3
The oxygen-blocking fresh-keeping anti-corrosion water-based plastic printing ink comprises the following raw materials in parts by weight:
20 parts of polyvinyl alcohol aqueous acrylic resin, 20 parts of sodium alginate modified aqueous acrylic resin, 10 parts of polyester modified acrylic resin, 30 parts of aqueous environment-friendly pigment slurry, 3 parts of food organosilicon defoamer, 3 parts of carnauba wax and 14 parts of water.
Example 4
The oxygen-blocking fresh-keeping anti-corrosion water-based plastic printing ink comprises the following raw materials in parts by weight:
26 parts of polyvinyl alcohol aqueous acrylic resin, 16 parts of sodium alginate modified aqueous acrylic resin, 7 parts of polyester modified acrylic resin, 25 parts of aqueous environment-friendly pigment slurry, 4 parts of food organosilicon defoamer, 7 parts of carnauba wax and 15 parts of water.
Example 5
The oxygen-blocking fresh-keeping anti-corrosion water-based plastic printing ink comprises the following raw materials in parts by weight:
30 parts of polyvinyl alcohol aqueous acrylic resin, 13 parts of sodium alginate modified aqueous acrylic resin, 13 parts of polyester modified acrylic resin, 21 parts of aqueous environment-friendly pigment slurry, 5 parts of food organosilicon defoamer, 8 parts of carnauba wax and 10 parts of water.
Example 6
The oxygen-blocking fresh-keeping anti-corrosion water-based plastic printing ink comprises the following raw materials in parts by weight:
40 parts of polyvinyl alcohol aqueous acrylic resin, 10 parts of sodium alginate modified aqueous acrylic resin, 5 parts of polyester modified acrylic resin, 25 parts of aqueous environment-friendly pigment slurry, 5 parts of food silicone defoamer, 10 parts of carnauba wax and 5 parts of water.
The preparation method of the embodiment comprises the following process steps:
the first step: adding the polyvinyl alcohol aqueous acrylic resin, the sodium alginate modified aqueous acrylic resin, the polyester modified acrylic resin and water into a batching cylinder according to the amount, stirring for 15 minutes at the stirring speed of 200-300 r/min for 15-20 minutes;
and a second step of: adding the water-based environment-friendly pigment slurry and the organic silicon defoamer for food under the stirring state, and continuously stirring for 20 minutes;
and a third step of: grinding the materials for one to three times by a sand mill at the constant temperature of 35 ℃;
fourth step: continuously stirring the carnauba wax for 10 minutes to prepare the oxygen-blocking fresh-keeping anti-corrosion water-based plastic printing ink;
fifth step: and detecting various technical indexes of the oxygen-blocking, fresh-keeping and corrosion-preventing water-based plastic printing ink.
Wherein the polyvinyl alcohol aqueous acrylic resin is a polyvinyl alcohol aqueous acrylic resin with the model of PA-4851 produced by Guangzhou Guanzhu New materials, is semitransparent liquid, has the density of 1.2g/mL, the viscosity of 1200cps, the pH value of 7 and the glass transition temperature of 60 ℃.
Wherein the sodium alginate modified water-based acrylic resin is 3207 resin produced by Tonde chemical industry, is milky semitransparent liquid, has a molecular weight of 8600, a viscosity of 3500, a softening point of 165 ℃ and a glass transition temperature of 85 ℃. The sodium alginate modified water-based acrylic resin with the model number of 3207 has the characteristics of high solid content, low viscosity, high drying speed, high gloss, less foam, excellent transfer printing performance, good compatibility and the like.
The polyester modified acrylic resin is self-made and has the advantages of good oxygen isolation, gas isolation, taste preservation and the like. The preparation method comprises the following steps: 200g of aliphatic PU-608 (which is a product of Guangzhou Guanzhu New material Co., ltd.) is put into a reactor, the reactor is replaced by nitrogen, then the reactor is vacuumized, stirring is started at a rotation speed of 700-800 revolutions per minute, 0.25g of potassium persulfate (which is a product of Guangzhou Sanwang chemical material Co., ltd.) is put into the reactor during stirring, 4.2g of sodium dodecyl sulfate anionic emulsifier is added, the temperature is raised to 55 ℃ for emulsification for 20 minutes, 44g of mixed monomer (30 g of methyl methacrylate, 2g of methacrylic acid and 12g of dimethyl chlorosiloxane) (material methyl methacrylate, methacrylic acid is a product of Guangzhou Sanwang chemical material Co., ltd.) is added, 0.35g of ammonium persulfate (material is a product of Guangzhou Sanwang chemical material Co., ltd.) is added, the internal temperature is raised to 85 ℃, the reaction starts when the internal temperature is raised to 90 ℃, the internal temperature is returned to 85 ℃, the internal temperature is kept to 85 ℃, the internal temperature is raised to be kept constant for 30 minutes, the internal temperature is raised to 88 ℃ after 30 minutes, the internal temperature is raised for 30 minutes, the internal temperature is cured for 30 minutes, and then the internal temperature is cooled to 35 ℃ for 35 ℃ to 35 ℃.
The aqueous environment-friendly pigment slurry is IU-series aqueous pigment slurry produced by Kedi corporation, has fine and smooth texture and bright color, can be directly diluted by water, and can also be directly added into aqueous resin emulsion for low-speed stirring and dispersion, and has good chemical stability and good acid and alkali resistance.
The food defoamer is a type 1488 organosilicon defoamer produced by Digao corporation, is a white emulsion, can be diluted by water in any proportion, has excellent defoaming performance, is used for defoaming ink, and improves the leveling property and wettability of the ink.
Wherein the carnauba wax is T11 produced by Guangzhou Type chemical Co.
The components and parts by weight of examples 1 to 6 are shown in Table 1.
Table 1:
| raw materials | Example 1 (parts) | Example 2 (parts) | Example 3 (parts) | Example 4 (parts) | Example 5 (parts) | Example 6 (parts) |
| Polyvinyl alcohol aqueous acrylic resin | 10 | 15 | 20 | 26 | 30 | 40 |
| Sodium alginate modified water-based acrylic resin | 30 | 25 | 20 | 16 | 13 | 10 |
| Polyester modified acrylic resin | 21 | 15 | 10 | 7 | 13 | 5 |
| Aqueous environment-friendly pigment slurry | 25 | 23 | 30 | 25 | 21 | 25 |
| Organosilicon defoamer for food | 1 | 2 | 3 | 4 | 5 | 5 |
| Carnauba wax | 1 | 1 | 3 | 7 | 8 | 10 |
| Water and its preparation method | 12 | 19 | 14 | 15 | 10 | 5 |
The main performance parameters of the oxygen-blocking fresh-keeping anti-corrosion water-based plastic printing ink prepared in the examples 1 to 6 are shown in the table 2.
Table 2:
| sequence number | Example 1 | Example 2 | Example 3 | Example 4 | Example 5 | Example 6 | Detection method |
| Fineness/. Mu.m | ≤5 | ≤5 | ≤5 | ≤5 | ≤5 | ≤5 | Scraper fineness gauge |
| Viscosity (p) | 75 | 83 | 79 | 85 | 80 | 88 | Digital viscometer |
| Tinting strength | 100 | 100 | 100 | 100 | 100 | 100 | QB558-83 |
| Gloss of the product | 65 | 68° | 69 | 70 | 73° | 70 | 60-degree standard gloss meter |
| pH value of | 6.9 | 7 | 7 | 6.8 | 6.9 | 7.1 | PH tester |
| Oxygen barrier properties | 0.01 | 0.02 | 0.02 | 0.08 | 0.03 | 0.14 | Oxygen resistance tester |
| Fresh-keeping and corrosion-preventing properties | 0.50% | 0.70% | 0.83% | 0.96% | 0.58% | 1.22% | Chromatograph |
The technical indexes of the oxygen-blocking fresh-keeping anti-corrosion water-based plastic printing ink prepared by the invention show that the performances of bright color, brightness, fineness, viscosity and the like all reach higher standards. Meanwhile, no harmful substances are released in the printing process, the harm to human health is avoided, and the novel environment-friendly oxygen-blocking fresh-keeping anti-corrosion water-based plastic printing ink is used for plastic printing of foods, fruits, fresh foods and the like, is bright in color, bright, particularly can prolong the fresh taste of the foods, prevents decay and deterioration, and has a wide market demand application prospect.
Claims (2)
1. The oxygen-blocking fresh-keeping anti-corrosion water-based plastic printing ink is characterized by comprising the following raw materials in parts by weight: 10-40 parts of polyvinyl alcohol aqueous acrylic resin, 5-30 parts of sodium alginate modified aqueous acrylic resin, 5-25 parts of polyester modified acrylic resin, 20-30 parts of aqueous environment-friendly pigment slurry, 1-5 parts of food organic silicon defoamer, 1-15 parts of carnauba wax agent and 5-30 parts of water, wherein the polyvinyl alcohol aqueous acrylic resin is semitransparent liquid, the density is 1.2g/mL, the viscosity is 1200cps, the pH value is 7, the glass transition temperature is 60 ℃, the sodium alginate modified aqueous acrylic resin is milky semitransparent liquid, the molecular weight is 8600, the viscosity is 3500 cps, the softening point is 165 ℃, the glass transition temperature is 85 ℃, the polyester modified acrylic resin is milky semitransparent liquid, the molecular weight of the polyester modified acrylic resin is 3000-5500, and the glass transition temperature is 18-22 ℃; the polyester modified acrylic resin is prepared by the following steps: 200g of aliphatic PU-608 is put into a reactor, the reactor is replaced by nitrogen, then the reactor is vacuumized, the stirring speed is started to 700-800 revolutions per minute, and 0.25g of potassium persulfate and 4.2g of sodium dodecyl sulfate anionic emulsifier are put into the stirring; emulsifying at 55 ℃ for 20 minutes, adding 44g of mixed monomer, adding 0.35g of ammonium persulfate, heating to 85 ℃ internally to start reaction, reacting violently when the temperature of the internal Wen Zhubu rises to 90 ℃, keeping the constant temperature at 85 ℃ after 1 minute, heating to 88 ℃ after 30 minutes, curing for 30 minutes, and cooling to 35 ℃ to discharge, wherein the mixed monomer comprises 30g of methyl methacrylate, 2g of methacrylic acid and 12g of dimethyl chlorosiloxane.
2. A method for preparing the aqueous plastic printing ink based on the method in claim 1, which is characterized by comprising the following process steps:
the first step: adding the polyvinyl alcohol aqueous acrylic resin, the sodium alginate modified aqueous acrylic resin, the polyester modified acrylic resin and water into a batching cylinder according to the amount, stirring for 15 minutes at the stirring speed of 200-300 r/min for 15-20 minutes;
and a second step of: adding the water-based environment-friendly pigment slurry and the food defoamer under the stirring state, and continuously stirring for 20 minutes;
and a third step of: grinding the materials for one to three times by a sand mill at the constant temperature of 35 ℃;
fourth step: adding the carnauba wax agent in a stirring state, and continuously stirring for 10 minutes to prepare the oxygen-blocking fresh-keeping anti-corrosion water-based plastic printing ink;
fifth step: and detecting various technical indexes of the oxygen-blocking, fresh-keeping and corrosion-preventing water-based plastic printing ink.
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| CN106543394A (en) * | 2016-11-07 | 2017-03-29 | 杭州天元诚达装饰材料有限公司 | Compound impregnating resin of novel aqueous polyurethane acroleic acid and preparation method thereof |
| CN107760123A (en) * | 2017-10-25 | 2018-03-06 | 常德金德新材料科技股份有限公司 | Anti-mildew fresh-keeping coating and its preparation method and application |
| CN107828273A (en) * | 2017-11-21 | 2018-03-23 | 肖锋 | A kind of nano modification pure water base gravure ink and its application |
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| CN107760123A (en) * | 2017-10-25 | 2018-03-06 | 常德金德新材料科技股份有限公司 | Anti-mildew fresh-keeping coating and its preparation method and application |
| CN107828273A (en) * | 2017-11-21 | 2018-03-23 | 肖锋 | A kind of nano modification pure water base gravure ink and its application |
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