CN116478573A - Low-residue metal middle frame protection printing ink - Google Patents
Low-residue metal middle frame protection printing ink Download PDFInfo
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- CN116478573A CN116478573A CN202310604932.6A CN202310604932A CN116478573A CN 116478573 A CN116478573 A CN 116478573A CN 202310604932 A CN202310604932 A CN 202310604932A CN 116478573 A CN116478573 A CN 116478573A
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- 229910052751 metal Inorganic materials 0.000 title claims abstract description 82
- 239000002184 metal Substances 0.000 title claims abstract description 80
- 238000007639 printing Methods 0.000 title description 3
- 230000001681 protective effect Effects 0.000 claims abstract description 55
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 claims abstract description 46
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 44
- 239000002761 deinking Substances 0.000 claims abstract description 28
- 229920000728 polyester Polymers 0.000 claims abstract description 28
- 239000004593 Epoxy Substances 0.000 claims abstract description 25
- 239000000945 filler Substances 0.000 claims abstract description 21
- 238000012545 processing Methods 0.000 claims abstract description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 33
- 238000003756 stirring Methods 0.000 claims description 27
- 238000000227 grinding Methods 0.000 claims description 20
- 239000003795 chemical substances by application Substances 0.000 claims description 16
- 229960000892 attapulgite Drugs 0.000 claims description 14
- 229910052625 palygorskite Inorganic materials 0.000 claims description 14
- 239000000463 material Substances 0.000 claims description 9
- 239000004576 sand Substances 0.000 claims description 9
- 230000003796 beauty Effects 0.000 claims description 8
- 239000005995 Aluminium silicate Substances 0.000 claims description 6
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 6
- 239000002253 acid Substances 0.000 claims description 6
- 235000012211 aluminium silicate Nutrition 0.000 claims description 6
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 claims description 6
- 230000001105 regulatory effect Effects 0.000 claims description 5
- 239000000454 talc Substances 0.000 claims description 4
- 229910052623 talc Inorganic materials 0.000 claims description 4
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 3
- -1 acrylic ester Chemical class 0.000 abstract description 11
- 238000013329 compounding Methods 0.000 abstract description 2
- 239000000976 ink Substances 0.000 description 80
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 description 20
- 230000000052 comparative effect Effects 0.000 description 14
- 238000002360 preparation method Methods 0.000 description 10
- 230000000694 effects Effects 0.000 description 8
- 239000000203 mixture Substances 0.000 description 6
- 230000009286 beneficial effect Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 239000000178 monomer Substances 0.000 description 3
- 235000012222 talc Nutrition 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000004132 cross linking Methods 0.000 description 2
- 230000009257 reactivity Effects 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- QZPSOSOOLFHYRR-UHFFFAOYSA-N 3-hydroxypropyl prop-2-enoate Chemical compound OCCCOC(=O)C=C QZPSOSOOLFHYRR-UHFFFAOYSA-N 0.000 description 1
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000001588 bifunctional effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 238000005406 washing 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
- C09D11/101—Inks specially adapted for printing processes involving curing by wave energy or particle radiation, e.g. with UV-curing following the printing
-
- 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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/64—Paper recycling
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Macromonomer-Based Addition Polymer (AREA)
- Inks, Pencil-Leads, Or Crayons (AREA)
Abstract
The invention provides low-residue metal middle frame protection ink which comprises the following components in parts by mass: 40-60 parts of polyester acrylate, 10-20 parts of water-soluble epoxy difunctional acrylate oligomer, 3-6 parts of photoinitiator, 20-35 parts of filler, 0.3-0.6 part of color paste and the balance of ethanol. Through reasonable compounding of polyester acrylic ester, water-soluble epoxy difunctional acrylic ester oligomer, photoinitiator, filler, color paste and ethanol, the difficulty in removing protective ink at the combination position of metal and plastic on the metal middle frame can be effectively reduced, residues are reduced, deinking efficiency is improved, and further processing and application of the subsequent metal middle frame are facilitated.
Description
Technical Field
The invention relates to the technical field of protective ink, in particular to low-residue metal middle frame protective ink.
Background
The mobile phone is the most main communication tool for people, brings great convenience to the life of people, and is assembled by adopting a metal middle frame and a rear cover. Compared with the plastic middle frame of the mobile phone, the metal middle frame of the mobile phone is favored from market backup because of the durability and the higher texture. Conventional operations such as cutting, hole digging, etc. are prone to generate a large amount of scraps during the preparation and forming process of the metal middle frame, and the process usually needs to be protected by spraying ink to avoid scratches.
After the preparation of the metal middle frame is finished and the protection of the protection ink on the metal middle frame is finished, the protection ink needs to be removed. In general, inks on metals are relatively easy to remove. However, for the light and thin and signal shielding of the mobile phone, several plastic bonding sites are usually disposed on the metal center. The protective ink is more difficult to remove on the large plastic surface than on the metal surface, and more difficult is that the metal and the plastic are bonded together in a non-tight silk-stitch mode, and part of the protective ink is permeated into the plastic in the actual construction process. In particular, for shipment speed, uv curing is generally used for protecting the ink, and the ink in the slit is very light-receiving, so that only the shallow portion is cured, and the curing of the ink at the depth of the bond is incomplete. It is generally considered that the ink is clean to remove after being cured into a film, and the internal stress is needed to be used for pulling, but the ink is not cured and cannot naturally use the partial acting force, and is sticky, and a great deal of labor is needed to wipe the residual ink in the later stage of the metal middle frame.
Therefore, developing a metal middle frame protective ink which is easy to remove low residues at the metal plastic bonding position can save a great deal of processing time and labor cost, and has important significance.
Disclosure of Invention
The invention aims to provide low-residue metal middle frame protective ink, which solves the problem that partial metal binding site ink of a metal middle frame is difficult to permeate and remove.
In order to achieve the above purpose, the invention provides a low-residue metal middle frame protection ink, which comprises the following components in parts by mass: 40-60 parts of polyester acrylate, 10-20 parts of water-soluble epoxy difunctional acrylate oligomer, 3-6 parts of photoinitiator, 20-35 parts of filler, 0.3-0.6 part of color paste and the balance of ethanol.
Preferably, the acid value of the polyester acrylate is 120-140mgKOH/g, and the viscosity is 100-300 mPa.s.
Preferably, the water-soluble epoxy difunctional acrylate oligomer has an average molecular weight of 500 to 1000.
Further preferably, the water-soluble epoxy difunctional acrylate oligomer is korean beauty source WS2100.
Preferably, the photoinitiator is a combination of TPO and 184.
Further preferably, the TPO and 184 are combined in a ratio of 1:1.
Preferably, the filler is a combination of two or more of talcum powder, calcium carbonate, kaolin and attapulgite.
Preferably, the color paste is aqueous blue.
Preferably, the preparation steps of the low-residue metal middle frame protective ink are as follows: adding the polyester acrylate, the water-soluble epoxy difunctional acrylate oligomer, the photoinitiator, the filler and the color paste into a container while stirring, stirring until the materials are completely and uniformly mixed to obtain a premix, transferring the premix into a sand mill for grinding, wherein the fineness of the premix after grinding is less than or equal to 10 microns, and adding ethanol into the ground premix while stirring until the viscosity is regulated to a preset viscosity to obtain the low-residue metal middle frame protective ink.
Further preferably, the viscosity of the low-residue metal middle frame protective ink is measured by using a Cai En No. 3 cup at 25 ℃, and the outflow time of the low-residue metal middle frame protective ink is 40+/-5 seconds.
Preferably, the step of removing the ink after the processing is finished is as follows: sequentially passing the metal middle frame attached with the low-residue metal middle frame protective ink through a deinking agent tank, a clean water tank and a clean water tank in sequence; the environment-friendly deinking agent is placed in the deinking agent tank, the pH value is 8-10, and the temperature is 70-80 ℃; clean clear water is placed in the clear water tank, and the temperature is 70-80 ℃; the deinking agent tank and the clear water tank are both provided with ultrasonic generating devices.
The invention has the beneficial effects that: the invention provides low-residue metal middle frame protective ink, which can effectively reduce the difficulty in removing protective ink at the combination position of metal and plastic on a metal middle frame, reduce residues, improve deinking efficiency and be beneficial to further processing and application of the subsequent metal middle frame by reasonably compounding polyester acrylate, water-soluble epoxy difunctional acrylate oligomer, a photoinitiator, a filler, color paste and ethanol. According to the invention, the acid value of the polyester acrylic ester is improved, 120-140mgKOH/g of polyester acrylic ester with high acid value is adopted to enable the ink to be removed more easily, and meanwhile, the water-soluble epoxy difunctional acrylic ester oligomer is added, so that the low-residue metal middle frame protective ink has certain water solubility, and the ink dissolution removability of the protective oil is further improved. In order to improve the curing effect of the protective ink, the invention adjusts the components and the proportion of the photoinitiator, improves the deep curing capacity, is beneficial to the curing of the ink at the joint part and is more beneficial to the later removal of the ink.
Detailed Description
The embodiments described below are only some, but not all, embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The invention provides low-residue metal middle frame protection ink which comprises the following components in parts by mass: 40-60 parts of polyester acrylate, 10-20 parts of water-soluble epoxy difunctional acrylate oligomer, 3-6 parts of photoinitiator, 20-35 parts of filler, 0.3-0.6 part of color paste and the balance of ethanol.
Preferably, the acid value of the polyester acrylate is 120-140mgKOH/g, and the viscosity is 100-300 mPa.s. The polyester acrylic ester with high acid value can make the protective ink easier to remove, and the reduction of viscosity can reduce the VOC emission of the whole protective ink.
Preferably, the water-soluble epoxy difunctional acrylate oligomer has an average molecular weight of 500 to 1000. The water-soluble epoxy difunctional acrylate oligomer can be prepared by adding a flexible long chain or a relatively soft water-soluble monomer (such as hydroxypropyl acrylate) to a water-soluble hard monomer (such as methacrylic acid) in the synthesis process. The adoption of the bifunctional acrylic ester oligomer can ensure the crosslinking reactivity and compactness of the film formation of the ink, so that the crosslinking reactivity and compactness of the film formation of the ink can be met, the water solubility is in consideration of deinking, the water solubility of the acrylic ester oligomer is characterized in that the protection of the ink can reduce the residual important ring, a proper amount of water-soluble components can be used for both processing protection and deinking, the problem that the residual amount of the deinking is too large when the water-soluble monomer component in the acrylic ester oligomer is too small is needed, the ink is easy to drop when the component is too much in washing and other steps, and reasonable allocation can be carried out according to the actual ink requirements. Further preferably, the water-soluble epoxy difunctional acrylate oligomer employs korean beauty source WS2100. The korean beauty source WS2100 used in this example is completely water-soluble after being cured alone, so that a proper amount of polyester acrylate is required to be matched to control the reaction degree, thereby obtaining limited water-solubility, improving the adhesion protection of ink, having a certain water-soluble deinking effect, and reducing deinking residues.
Preferably, the photoinitiator is a combination of TPO and 184. The TPO and 184 are combined in a ratio of 1:1.
Preferably, the filler is a combination of two or more of talcum powder, calcium carbonate, kaolin and attapulgite. The following three requirements should be satisfied after the above fillers are selected in proportion: 1. the mohs hardness is lower than 4;2. the combined filler needs to have good wettability to water and is easy to disperse in water; 3. the combined filler has moderate specific surface and is not easy to settle. The talcum powder has excellent framework construction capability, but has poor water wettability, the kaolin has better water wettability, the attapulgite and the kaolin have good water wettability, and better effect can be achieved by adopting talcum powder matched with powder with good water wettability. Preferably, talc and kaolin are used in combination as shown in the examples, talc in the filler: the ratio of the attapulgite is 7:6-15:6, namely the ratio of the talcum powder to the attapulgite can be 7:6 or 8:6 or 9:6 or 10:6 or 11:6 or 12:6 or 13:6 or 14:6 or 15:6, and the talcum powder accounts for relatively high so as to ensure the adhesive force of the ink.
Preferably, the color paste is water-based blue, and can play a role in color display.
Preferably, the preparation steps of the low-residue metal middle frame protective ink are as follows: adding the polyester acrylate, the water-soluble epoxy difunctional acrylate oligomer, the photoinitiator, the filler and the color paste into a container while stirring, stirring until the materials are completely and uniformly mixed to obtain a premix, transferring the premix into a sand mill for grinding, wherein the fineness of the premix after grinding is less than or equal to 10 microns, and adding ethanol into the ground premix while stirring until the viscosity is regulated to a preset viscosity to obtain the low-residue metal middle frame protective ink.
Further preferably, the viscosity of the low-residue metal middle frame protective ink is measured by using a Cai En No. 3 cup at 25 ℃, and the outflow time of the low-residue metal middle frame protective ink is 40+/-5 seconds. The outflow time can be converted to a kinematic viscosity according to the following equation: v=k (t-c), where: v-kinematic viscosity, cSt; t-outflow time, s; k, c-the corresponding constant, k for cup number Cai En 3 is 11.7 and c is 7.5. The viscosity is regulated by adopting ethanol, so that the workability is regulated, and the spraying of the printing ink is protected.
Preferably, the step of removing the ink after the processing is finished is as follows: sequentially passing the metal middle frame attached with the low-residue metal middle frame protective ink through a deinking agent tank, a clean water tank and a clean water tank in sequence; the environment-friendly deinking agent is placed in the deinking agent tank, and is generally water-based low-VOC deinking agent, the pH value is 8-10, and the temperature is 70-80 ℃; clean clear water is placed in the clear water tank, and the temperature is 70-80 ℃; the deinking agent tank and the clear water tank are both provided with ultrasonic generating devices. It should be noted that, the metal middle frame loaded with the protective ink may be deinked in the order of deinking agent tank-clean water tank, two to three tanks of deinking agent and two tanks of clean water are provided, and in the previous one to two tanks of deinking agent, the metal middle frame will remove most of the ink, then the next tank intensively removes the ink in the plastic area, and finally the two tanks of clean water are rinsed.
Example 1
The embodiment 1 provides a low-residual metal middle frame protection ink, which comprises the following components in parts by mass: 50 parts of polyester acrylate, 15 parts of water-soluble epoxy difunctional acrylate oligomer (beauty WS 2100), 2 parts of photoinitiator (TPO), 2 parts of photoinitiator (184), 16 parts of talcum powder, 12 parts of attapulgite, 0.5 part of color paste and 2.5 parts of ethanol.
The preparation method of the low-residue metal middle frame protective ink comprises the following steps: adding the polyester acrylate, the water-soluble epoxy difunctional acrylate oligomer, the photoinitiator (TPO and 184), the talcum powder, the attapulgite and the color paste into a container while stirring, stirring until the materials are completely and uniformly mixed to obtain a premix, transferring the premix into a sand mill for grinding, wherein the fineness of the premix after grinding is less than or equal to 10 microns, and adding ethanol into the ground premix while stirring to completely mix to obtain the low-residue metal middle frame protective ink.
Example 2
The embodiment 2 provides a low-residual metal middle frame protection ink, which comprises the following components in parts by mass: 50 parts of polyester acrylate, 12 parts of water-soluble epoxy difunctional acrylate oligomer (beauty WS 2100), 2 parts of photoinitiator (TPO), 2 parts of photoinitiator (184), 20 parts of talcum powder, 8 parts of attapulgite, 0.5 part of color paste and 5.5 parts of ethanol.
The preparation method of the low-residue metal middle frame protective ink comprises the following steps: adding the polyester acrylate, the water-soluble epoxy difunctional acrylate oligomer, the photoinitiator (TPO and 184), the talcum powder, the attapulgite and the color paste into a container while stirring, stirring until the materials are completely and uniformly mixed to obtain a premix, transferring the premix into a sand mill for grinding, wherein the fineness of the premix after grinding is less than or equal to 10 microns, and adding ethanol into the ground premix while stirring to completely mix to obtain the low-residue metal middle frame protective ink.
Comparative example 1
The comparative example 1 provides a metal middle frame protective ink, which comprises the following components in parts by mass: 50 parts of polyester acrylate, 15 parts of water-soluble epoxy difunctional acrylate oligomer (beauty WS 2100), 2 parts of photoinitiator (TPO), 2 parts of photoinitiator (184), 28 parts of talcum powder, 0.5 part of color paste and 2.5 parts of ethanol.
The preparation method of the metal middle frame protective ink comprises the following steps: adding the polyester acrylate, the water-soluble epoxy difunctional acrylate oligomer, the photoinitiators (TPO and 184), the talcum powder and the color paste into a container while stirring, stirring until the materials are completely and uniformly mixed to obtain a premix, transferring the premix into a sand mill for grinding, wherein the fineness of the premix after grinding is less than or equal to 10 microns, and adding ethanol into the ground premix while stirring to completely mix to obtain the metal middle frame protective ink.
Comparative example 2
The comparative example 2 provides a metal middle frame protective ink, which comprises the following components in parts by mass: 62 parts of polyester acrylate, 2 parts of a photoinitiator (TPO), 2 parts of a photoinitiator (184), 20 parts of talcum powder, 8 parts of attapulgite, 0.5 part of color paste and 5.5 parts of ethanol.
The preparation method of the metal middle frame protective ink comprises the following steps: adding the polyester acrylic ester, the photoinitiator (TPO and 184), the talcum powder, the attapulgite and the color paste into a container while stirring, stirring until the materials are completely and uniformly mixed to obtain a premix, transferring the premix into a sand mill for grinding, wherein the fineness of the premix after grinding is less than or equal to 10 microns, and adding ethanol into the premix after grinding while stirring to completely mix to obtain the metal middle frame protective ink.
Comparative example 3
The comparative example 3 provides a metal middle frame protective ink, which comprises the following components in parts by mass: 65 parts of polyester acrylate, 2 parts of a photoinitiator (TPO), 2 parts of a photoinitiator (184), 28 parts of talcum powder, 0.5 part of color paste and 2.5 parts of ethanol.
The preparation method of the metal middle frame protective ink comprises the following steps: adding the polyester acrylic ester, the photoinitiator (TPO and 184), the talcum powder and the color paste into a container while stirring, stirring until the materials are completely and uniformly mixed to obtain a premix, transferring the premix into a sand mill for grinding, wherein the fineness of the premix after grinding is less than or equal to 10 microns, and adding ethanol into the premix after grinding while stirring to completely mix to obtain the metal middle frame protective ink.
Comparative example 4
The comparative example 4 provides a metal middle frame protective ink, which comprises the following components in parts by mass: 50 parts of polyester acrylate, 15 parts of water-soluble epoxy difunctional acrylate oligomer (beauty WS 2100), 2 parts of photoinitiator (TPO), 2 parts of photoinitiator (184), 12 parts of talcum powder, 16 parts of attapulgite, 0.5 part of color paste and 2.5 parts of ethanol.
The preparation method of the metal middle frame protective ink comprises the following steps: adding the polyester acrylate, the water-soluble epoxy difunctional acrylate oligomer, the photoinitiator (TPO and 184), the talcum powder, the attapulgite and the color paste into a container while stirring, stirring until the materials are completely and uniformly mixed to obtain a premix, transferring the premix into a sand mill for grinding, wherein the fineness of the premix after grinding is less than or equal to 10 microns, and adding ethanol into the ground premix while stirring to completely mix to obtain the metal middle frame protective ink.
The protective inks prepared in examples 1 to 3 and comparative examples 1 to 4 were tested for their properties, and the adhesion effect and removal effect of the protective ink after being applied to a metal center of a mobile phone were tested. The test results are shown in table 1:
table 1 shows the data for the protection ink test in examples 1-2 and comparative examples 1-4
From the data, we can see that the water-soluble protective ink prepared in the embodiment 1-2 has moderate viscosity, good film forming effect, no shrinkage cavity or bubble in film forming appearance, good adhesion to a metal middle frame of the mobile phone, easy removal of the ink, and no residue after deinking of the special combination position of the metal and the plastic. From the data of comparative example 1, only talcum powder adopted as the filler can cause a small amount of residual deinking, and talcum powder has poor wettability to water, which indicates that the selection ratio of the filler has a certain influence on the deinking effect of the ink. As can be seen from the data of comparative example 4, the amount of talc added has a certain effect on the adhesion of the ink, so that the combination of fillers is selected in consideration of the skeletal ability and water wettability of the fillers, thereby ensuring excellent adhesion and deinking properties of the ink. As can be seen from the data of comparative example 2 and comparative example 3, the water-soluble difunctional acrylate oligomer and the combined filler have a large impact on protecting the deinking properties of the ink at the metal-plastic bond site.
The present invention has been described in detail with reference to the embodiments, and it should be noted that the specific features described in the above embodiments may be modified in combination by any suitable means without contradiction, and the present invention will not be described in any way. Further, other modifications and combinations of the features of the invention, as well as other variations and combinations of the features of the invention, are also contemplated as being within the scope of the invention.
Claims (10)
1. The low-residue metal middle frame protection ink is characterized by comprising the following components in parts by mass: 40-60 parts of polyester acrylate, 10-20 parts of water-soluble epoxy difunctional acrylate oligomer, 3-6 parts of photoinitiator, 20-35 parts of filler, 0.3-0.6 part of color paste and the balance of ethanol.
2. The low residue metal mid-frame protective ink according to claim 1, wherein the polyester acrylate has an acid value of 120 to 140mgKOH/g and a viscosity of 100 to 300 mPa-s.
3. The low residue metal mid-frame protective ink of claim 1, wherein the water soluble epoxy difunctional acrylate oligomer has an average molecular weight of 500 to 1000.
4. The low residue metal mid-frame protective ink of claim 3, wherein said water soluble epoxy difunctional acrylate oligomer is korean beauty source WS2100.
5. The low residue metal mullion protection ink of claim 1 wherein said photoinitiator is a combination of TPO and 184.
6. The low residue metal mullion protection ink of claim 5 wherein said TPO and 184 are combined in a ratio of 1:1.
7. The low residue metal mid-frame protective ink of claim 1, wherein the filler is a combination of two or more of talc, calcium carbonate, kaolin, attapulgite.
8. The low-residue metal middle frame protection ink according to claim 1, wherein the low-residue metal middle frame protection ink is prepared by the following steps: adding the polyester acrylate, the water-soluble epoxy difunctional acrylate oligomer, the photoinitiator, the filler and the color paste into a container while stirring, stirring until the materials are completely and uniformly mixed to obtain a premix, transferring the premix into a sand mill for grinding, wherein the fineness of the premix after grinding is less than or equal to 10 microns, and adding ethanol into the ground premix while stirring until the viscosity is regulated to a preset viscosity to obtain the low-residue metal middle frame protective ink.
9. The low-residue metal mid-frame protective ink of claim 8, wherein the viscosity of the low-residue metal mid-frame protective ink is measured at 25 ℃ using a Cai En cup No. 3, and the outflow time of the low-residue metal mid-frame protective ink is 40±5 seconds.
10. The low-residue metal middle frame protective ink according to claim 1, wherein the step of removing the ink from the metal middle frame attached with the low-residue metal middle frame protective ink after the processing is completed is: sequentially passing the metal middle frame attached with the low-residue metal middle frame protective ink through a deinking agent tank, a clean water tank and a clean water tank in sequence; the environment-friendly deinking agent is placed in the deinking agent tank, the pH value is 8-10, and the temperature is 70-80 ℃; clean clear water is placed in the clear water tank, and the temperature is 70-80 ℃; the deinking agent tank and the clear water tank are both provided with ultrasonic generating devices.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310604932.6A CN116478573A (en) | 2023-05-26 | 2023-05-26 | Low-residue metal middle frame protection printing ink |
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| CN202310604932.6A CN116478573A (en) | 2023-05-26 | 2023-05-26 | Low-residue metal middle frame protection printing ink |
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