CN113832465B - Corrosion treatment process for improving embossing effect of secondary corrosion embossing plate - Google Patents
Corrosion treatment process for improving embossing effect of secondary corrosion embossing plate Download PDFInfo
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- CN113832465B CN113832465B CN202111018144.6A CN202111018144A CN113832465B CN 113832465 B CN113832465 B CN 113832465B CN 202111018144 A CN202111018144 A CN 202111018144A CN 113832465 B CN113832465 B CN 113832465B
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- 238000005260 corrosion Methods 0.000 title claims abstract description 87
- 230000007797 corrosion Effects 0.000 title claims abstract description 81
- 238000004049 embossing Methods 0.000 title claims abstract description 64
- 238000000034 method Methods 0.000 title claims abstract description 22
- 230000008569 process Effects 0.000 title claims abstract description 19
- 230000000694 effects Effects 0.000 title claims abstract description 15
- 239000007788 liquid Substances 0.000 claims abstract description 38
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims abstract description 30
- 239000011347 resin Substances 0.000 claims abstract description 27
- 229920005989 resin Polymers 0.000 claims abstract description 27
- 239000007769 metal material Substances 0.000 claims abstract description 15
- 239000011248 coating agent Substances 0.000 claims abstract description 13
- 238000000576 coating method Methods 0.000 claims abstract description 13
- 239000000203 mixture Substances 0.000 claims abstract description 13
- 238000012805 post-processing Methods 0.000 claims abstract description 10
- 230000001680 brushing effect Effects 0.000 claims abstract description 9
- 239000003292 glue Substances 0.000 claims abstract description 6
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 33
- -1 polydimethylsiloxane Polymers 0.000 claims description 25
- 229920002857 polybutadiene Polymers 0.000 claims description 24
- JIAARYAFYJHUJI-UHFFFAOYSA-L zinc dichloride Chemical compound [Cl-].[Cl-].[Zn+2] JIAARYAFYJHUJI-UHFFFAOYSA-L 0.000 claims description 24
- 239000005062 Polybutadiene Substances 0.000 claims description 23
- 238000003756 stirring Methods 0.000 claims description 23
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 claims description 18
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 claims description 17
- 239000004205 dimethyl polysiloxane Substances 0.000 claims description 15
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 claims description 15
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 claims description 14
- 239000002994 raw material Substances 0.000 claims description 13
- 235000005074 zinc chloride Nutrition 0.000 claims description 12
- 239000011592 zinc chloride Substances 0.000 claims description 12
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 11
- 239000002041 carbon nanotube Substances 0.000 claims description 11
- 229910021393 carbon nanotube Inorganic materials 0.000 claims description 11
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 10
- LIQZZAPDGRFJIP-UHFFFAOYSA-L [dodecanoyloxy-bis(2-methylpropyl)stannyl] dodecanoate Chemical compound CC(C)C[Sn+2]CC(C)C.CCCCCCCCCCCC([O-])=O.CCCCCCCCCCCC([O-])=O LIQZZAPDGRFJIP-UHFFFAOYSA-L 0.000 claims description 10
- 238000006243 chemical reaction Methods 0.000 claims description 10
- 239000006185 dispersion Substances 0.000 claims description 10
- 238000001035 drying Methods 0.000 claims description 10
- 125000000956 methoxy group Chemical group [H]C([H])([H])O* 0.000 claims description 10
- 229920001296 polysiloxane Polymers 0.000 claims description 10
- 238000007731 hot pressing Methods 0.000 claims description 9
- KWVGIHKZDCUPEU-UHFFFAOYSA-N 2,2-dimethoxy-2-phenylacetophenone Chemical compound C=1C=CC=CC=1C(OC)(OC)C(=O)C1=CC=CC=C1 KWVGIHKZDCUPEU-UHFFFAOYSA-N 0.000 claims description 6
- DKIDEFUBRARXTE-UHFFFAOYSA-N 3-mercaptopropanoic acid Chemical compound OC(=O)CCS DKIDEFUBRARXTE-UHFFFAOYSA-N 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 6
- 238000003825 pressing Methods 0.000 claims description 6
- 238000001132 ultrasonic dispersion Methods 0.000 claims description 6
- 229920003048 styrene butadiene rubber Polymers 0.000 claims description 5
- 238000000967 suction filtration Methods 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 238000005303 weighing Methods 0.000 claims description 5
- 238000012545 processing Methods 0.000 claims description 2
- 239000002131 composite material Substances 0.000 abstract description 19
- 230000007774 longterm Effects 0.000 abstract description 4
- 239000000047 product Substances 0.000 description 20
- 238000005530 etching Methods 0.000 description 19
- 229910000831 Steel Inorganic materials 0.000 description 17
- 239000010959 steel Substances 0.000 description 17
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 description 11
- 239000011265 semifinished product Substances 0.000 description 6
- 239000012528 membrane Substances 0.000 description 5
- 239000000123 paper Substances 0.000 description 4
- 238000005086 pumping Methods 0.000 description 4
- 239000002253 acid Substances 0.000 description 3
- 238000005187 foaming Methods 0.000 description 3
- 238000003760 magnetic stirring Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000004806 packaging method and process Methods 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 206010053615 Thermal burn Diseases 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000012074 organic phase Substances 0.000 description 1
- 230000021715 photosynthesis, light harvesting Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000012744 reinforcing agent Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F1/00—Etching metallic material by chemical means
- C23F1/02—Local etching
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B44—DECORATIVE ARTS
- B44C—PRODUCING DECORATIVE EFFECTS; MOSAICS; TARSIA WORK; PAPERHANGING
- B44C1/00—Processes, not specifically provided for elsewhere, for producing decorative surface effects
- B44C1/24—Pressing or stamping ornamental designs on surfaces
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F1/00—Etching metallic material by chemical means
- C23F1/10—Etching compositions
- C23F1/14—Aqueous compositions
- C23F1/16—Acidic compositions
- C23F1/28—Acidic compositions for etching iron group metals
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Laminated Bodies (AREA)
Abstract
The invention discloses a corrosion treatment process for improving the embossing effect of a secondary corrosion embossing plate, which relates to the technical field of printing processes and comprises corrosion treatment and post-processing treatment of a metal material plate, wherein the corrosion treatment of the metal material plate comprises the following steps: a) Carrying out shallow corrosion treatment on the metal material plate; b) Coating anti-corrosion glue; c) Carrying out deep corrosion treatment; the post-processing treatment comprises the following steps: d) Preparing a treatment liquid and brushing the treatment liquid on the surface of the semi-finished embossed plate; e) Modifying nano aluminum oxide by KH 550; f) A resin mixture is formulated and applied to the surface of the pretreated embossing plate. According to the invention, the composite film layer and the resin layer are formed on the surface of the embossing plate, the compact and uniform structure of the composite film layer is utilized, the edge angle of the embossing plate is improved to be smooth, the damage to the paper structure is reduced, and the excellent impact resistance of the resin layer can protect the composite film layer, so that the embossing plate can meet the long-term normal use effect.
Description
Technical Field
The invention belongs to the technical field of printing processes, and particularly relates to a corrosion treatment process for improving an embossing effect of a secondary corrosion embossing plate.
Background
Embossing is a common process for finishing the surface of a printed product for packaging decoration, and can not only improve the quality grade of product packaging, but also improve the artistic level of the printed product and the added value of the commodity. There are two general embossing processes, one is to use patterned drums, and to use special machines to perform the embossing process by pressing with pressure rollers; the other is to make embossing plate with pattern, and the embossing process is completed by an embosser. The former has very expensive cost for manufacturing the pattern roller, has relatively stable embossing quality, but is only suitable for embossing products with fixed pattern and large quantity; the latter can be embossed by patterns made of metal material plates, the manufacturing process is convenient, and the materials are cheaper.
Currently, two types of plates exist in the use process of embossing plates, namely embossing plates and corrosion embossing plates. The relief plate is the best in the prior art, the procedure is measured by a computer, the whole process is carved by an electric carving machine, the three-dimensional modeling of the plate is realized, the plate opening is trimmed into an inclined plane, the convex heights of the concave-convex rear surface of the product are inconsistent, the high and low levels are close to the state of the image-text, and the relief plate is particularly used on high-grade packaging, but the manufacturing cost of the electric carving relief plate is higher. The corroded plate is corroded by the liquid medicine, the cost is lower, but the outline is not obvious, the layering sense is poor, the plate opening is rough, the paper structure is easily damaged when embossing is carried out, and the surface foaming phenomenon can occur frequently. For example, chinese patent CN2015100734368 discloses a uniform etching method for a laser plate roller, which adopts spray etching to perform primary etching and adopts buthylan etching to perform secondary etching, so that impact of etching liquid in spray etching on the plate roller is reduced, and the phenomenon that the size of net holes on the plate roller is not easy is improved; however, in practical application, a small amount of embossed products still have surface foaming phenomenon, and when the plate roller is used for long-term embossing operation, the edge of the net pit is worn due to embossing friction between the net pit and paper, and the net pit is rough, so that the quality of the later-stage embossed products is reduced.
Disclosure of Invention
The invention aims to solve the existing problems and provides a corrosion treatment process for improving the embossing effect of a secondary corrosion embossing plate.
The invention is realized by the following technical scheme:
an etching treatment process for improving the embossing effect of a secondary etching embossing plate comprises etching treatment and subsequent processing treatment on a metal material plate,
the corrosion treatment of the metal material plate comprises the following steps:
a) Placing the metal material plate baked and trimmed at high temperature in corrosive liquid, carrying out shallow corrosion treatment by using a brush, and determining the depth of the shallow corrosion according to embossing requirements;
b) After shallow corrosion meets the requirements, the metal material plate is washed clean and dried by clear water, and the anti-corrosion glue is uniformly coated to cover lines and pictures of the concave-convex pressing part, so that the picture is protected;
c) Placing the covered metal material plate into a corrosion machine, and performing deep corrosion operation according to normal corrosion time and requirements to obtain a semi-finished embossed plate;
the post-processing treatment comprises the following steps:
d) Dissolving polybutadiene in toluene, fully stirring and dissolving, adding mercaptopropionic acid and 2, 2-dimethoxy-2-phenylacetophenone into a system, reacting for 30-40min under ultraviolet irradiation, settling the product in ethanol for 2-5 times after the reaction is finished, drying in a vacuum oven until the weight is constant to obtain carboxyl modified polybutadiene, then dissolving the carboxyl modified polybutadiene in chloroform, slowly adding a carbon nano tube dispersion liquid, adding a zinc chloride solution, stirring overnight to obtain a treatment liquid, uniformly coating the treatment liquid on the surface of a semi-finished embossed plate, and clamping the semi-finished embossed plate by a soft styrene-butadiene rubber plate after the treatment liquid is completely dried to perform hot pressing treatment to obtain a pretreated embossed plate;
according to the invention, a composite membrane layer is formed on the surface of the embossing plate, and by introducing metal coordination bonds into a polybutadiene rubber system, the bond energy and excellent dynamic property of the metal coordination bonds play a role in excellent energy dissipation, so that the composite membrane layer has good mechanical property, the composite membrane layer also has excellent self-repairing capability and remolding capability under milder conditions due to the high polymer chain segment movement capability and the good dynamic property of the coordination bonds, and the strength and toughness of the composite membrane layer are improved through the interaction of the carbon nano tubes and the polymer chain segments by using the added carbon nano tubes as a reinforcing agent, so that the toughness of the composite membrane layer is improved; the temperature and pressure conditions of the embossing plate are exactly overlapped with the temperature interval and the pressure interval of self-repairing of the composite film layer when the embossing plate is in operation, so that the composite film layer is exactly in a self-repairing state when the embossing plate is in operation, and the composite film layer is always in a compact and uniform structure;
e) Putting nano aluminum oxide into a container, pouring methanol, performing ultrasonic dispersion for 40-60min, dropwise adding a proper amount of KH550, heating, magnetically stirring for 5-6h, after the reaction is finished, performing suction filtration, fully rinsing the modified nano aluminum oxide with methanol, and drying to obtain pretreated nano aluminum oxide;
according to the invention, the nano aluminum oxide is modified to improve the dispersion effect of the nano aluminum oxide in the organic phase, so that the heat conduction performance of a resin layer obtained by resin curing is improved, and the heat generated by an embossing machine can be transmitted to a material to be embossed in time through the resin layer when the embossing plate is operated, thereby facilitating the smooth operation of embossing;
f) Weighing a certain amount of pretreated nano aluminum oxide, hydroxyl-terminated polydimethylsiloxane, side methoxy polysiloxane and di-isobutyl tin dilaurate, placing the raw materials in a beaker according to a proportion, uniformly stirring at a low speed, removing bubbles to obtain a resin mixture, uniformly coating the resin mixture on the surface of the pretreated embossed plate, and curing to obtain the finished embossed plate.
According to the preferred technical scheme, the metal material plate can be selected from a steel plate, a copper plate, a magnesium plate and a zinc plate, the most preferred steel plate, the corrosive liquid is ferric trichloride corrosive liquid, and the Baume degree of the ferric trichloride corrosive liquid is 39-41.
According to the preferred technical scheme, the shallow corrosion treatment and the deep corrosion treatment are both performed by adopting the same corrosion liquid.
According to the preferred technical scheme of the invention, the corrosion depth of the shallow corrosion treatment is 0.1-0.3mm.
According to the preferred technical scheme of the invention, the corrosion depth of the deep corrosion treatment is 0.6-0.7mm.
According to the preferred technical scheme, the dosage ratio of the polybutadiene, the toluene, the mercaptopropionic acid and the 2, 2-dimethoxy-2-phenylacetophenone is 1.0-1.5 g/100-130 mL/350-380 mL/13-17 mg.
According to the preferred technical scheme, the mass volume ratio of the carboxyl modified polybutadiene to the chloroform solution to the carbon nano tube dispersion liquid to the zinc chloride solution is 1g:100-130mL:40-46mL:1.3-1.8mL.
According to the preferred technical scheme, the concentration of the carbon nano tube dispersion liquid is 10-15mg/mL.
According to the preferred technical scheme, the mass ratio of the carboxyl modified polybutadiene to the zinc chloride is 1:0.3-0.5.
According to the preferred technical scheme, the temperature of the hot pressing treatment is 70-75 ℃, the pressure is 4.5-5.5MPa, and the treatment time is 8-13min.
According to the preferred technical scheme of the invention, the coating thickness of the treatment liquid is 30-80 mu m.
According to the preferred technical scheme, the dosage ratio of the nano aluminum oxide, the methanol and the KH550 is 1g:150-180mL:5-8mL.
According to the preferred technical scheme of the invention, the power of ultrasonic dispersion is 300-400W.
According to the preferred technical scheme of the invention, the heating temperature is 65-75 ℃.
According to the preferred technical scheme, the mass ratio of the hydroxyl-terminated polydimethylsiloxane to the side methoxy polysiloxane to the diisobutyltin dilaurate is 60-65:40-43:1.
According to the preferred technical scheme, the dosage of the pretreated nano aluminum oxide accounts for 10-25% of the mass of the hydroxyl-terminated polydimethylsiloxane.
According to the preferred technical scheme, the rotating speed of low-speed stirring is 30-50r/min, and the stirring time is 5-15min.
According to the preferred technical scheme, the method for removing the bubbles comprises the following steps: and (3) placing the product into a vacuum oven, pumping negative pressure to-0.7 to-0.9 MPa, and removing bubbles generated by stirring in the raw material until the surface of the raw material does not generate bubbles.
According to the preferable technical scheme of the invention, the coating thickness of the resin mixture is 80-120 mu m.
According to the preferred technical scheme, the curing temperature is 40-50 ℃ and the curing time is 3-5d.
Compared with the prior art, the invention has the following advantages:
firstly, a layer of composite film layer is formed on the surface of the embossing plate and is subjected to hot pressing treatment, and the composite film layer formed on the surface of the embossing plate has excellent self-repairing capability and remolding capability, so that the composite film layer formed on the surface of the embossing plate has a compact and uniform structure, and a smooth and compact composite film layer is formed at the groove of the embossing plate, the edge angle of the embossing plate can be effectively improved smoothly, the damage to the paper structure is reduced, and the forming effect is better.
Secondly, the resin layer is constructed and formed on the surface of the composite film layer, heat generated by an embossing machine is timely transferred from the embossing plate to the material to be embossed by utilizing the heat conductivity of the resin layer, so that the smooth embossing operation is facilitated, and the composite film layer and the resin layer have good heat conductivity, so that the heat can be quickly transferred between the resin layers, the phenomenon of heat aggregation in the resin layer is avoided, the generation of thermal stress in the resin layer is reduced, the structural stability of the resin layer is improved, the resin layer is not easy to crack, and the excellent impact resistance of the resin layer can play a long-term protective role on the composite film layer, so that the composite film layer can keep structural integrity, and the embossing plate can meet the effect of long-term normal use.
Detailed Description
Example 1
An etching treatment process for improving the embossing effect of a secondary etching embossing plate comprises etching treatment and post-processing treatment on a steel plate,
the corrosion treatment of the steel plate comprises the following steps:
a) Placing the steel plate baked and trimmed at high temperature in a corrosive liquid, wherein the corrosive liquid is ferric trichloride corrosive liquid with Baume degree of 39, performing shallow corrosion treatment by using a hairbrush, and determining the depth of the shallow corrosion according to embossing requirements, wherein the corrosion depth reaches 0.1 mm;
b) After shallow corrosion meets the requirements, the steel plate is washed clean and dried by clear water, and is uniformly coated with anti-corrosion glue for preventing ferric trichloride and acid corrosion, the thickness is 8 mu m, and lines and pictures and texts of the concave-convex pressing part are covered, so that the picture is protected;
c) Placing the covered steel plate into a corrosion machine, wherein the corrosion liquid is ferric trichloride corrosion liquid with Baume degree of 39, and carrying out deep corrosion operation according to normal corrosion time and requirements, wherein the corrosion depth reaches 0.6mm, so as to obtain a semi-finished embossed plate;
the post-processing treatment comprises the following steps:
d) Dissolving 1.0g of polybutadiene in 100mL of toluene, fully stirring and dissolving, adding 350mL of mercaptopropionic acid and 13mg of 2, 2-dimethoxy-2-phenylacetophenone into a system, reacting for 30min under ultraviolet irradiation, settling the product in ethanol for 2 times after the reaction is finished, drying the product in a vacuum oven to constant weight to obtain carboxyl modified polybutadiene, then dissolving 1g of carboxyl modified polybutadiene in 100mL of chloroform, slowly adding 40mL of carbon nano tube dispersion with the concentration of 10mg/mL, adding 1.3mL of zinc chloride solution, controlling the mass ratio of the carboxyl modified polybutadiene to the zinc chloride to be 1:0.3, stirring overnight to obtain a treatment solution, uniformly brushing the treatment solution on the surface of a semi-finished embossed plate, controlling the brushing thickness to be 30 mu m, clamping the semi-finished product by a soft styrene-butadiene rubber plate after the semi-finished product is completely dried, and carrying out hot pressing treatment for 8min under the condition of the temperature of 70 ℃ and the pressure of 4.5MPa to obtain a pretreated embossed plate;
e) Putting 1g of nano aluminum oxide into a container, pouring 150mL of methanol, performing ultrasonic dispersion for 40min at 300W, dropwise adding 5mL of KH550, heating to 65 ℃ and performing magnetic stirring for 5h, after the reaction is finished, performing suction filtration, fully rinsing the modified nano aluminum oxide with methanol, and drying to obtain pretreated nano aluminum oxide;
f) Weighing pretreated nano aluminum oxide, hydroxyl-terminated polydimethylsiloxane, side methoxy polysiloxane and diisobutyltin dilaurate, wherein the mass ratio of the hydroxyl-terminated polydimethylsiloxane to the side methoxy polysiloxane to the diisobutyltin dilaurate is 60:40:1, the dosage of the pretreated nano aluminum oxide accounts for 10% of the mass of the hydroxyl-terminated polydimethylsiloxane, placing the raw materials into a beaker according to the proportion, stirring for 5min at a low speed of 30r/min, placing the product into a vacuum oven, pumping negative pressure to-0.7 MPa, removing bubbles generated by stirring in the raw materials until the surfaces of the raw materials do not generate bubbles, obtaining a resin mixture, uniformly coating the resin mixture on the surfaces of the pretreated embossed plate, controlling the coating thickness to be 80 mu m, and curing for 3d at 40 ℃ to obtain the finished embossed plate.
Example 2
An etching treatment process for improving the embossing effect of a secondary etching embossing plate comprises etching treatment and post-processing treatment on a steel plate,
the corrosion treatment of the steel plate comprises the following steps:
a) Placing the steel plate baked and trimmed at high temperature in a corrosive liquid, wherein the corrosive liquid is ferric trichloride corrosive liquid with Baume degree of 41, performing shallow corrosion treatment by using a hairbrush, and determining the depth of the shallow corrosion according to embossing requirements, wherein the corrosion depth reaches 0.12 mm;
b) After shallow corrosion meets the requirements, the steel plate is washed clean and dried by clear water, and is uniformly coated with anti-corrosion glue for preventing ferric trichloride and acid corrosion, the thickness is 8 mu m, and lines and pictures and texts of the concave-convex pressing part are covered, so that the picture is protected;
c) Placing the covered steel plate into a corrosion machine, wherein the corrosion liquid is ferric trichloride corrosion liquid with Baume degree of 41, and carrying out deep corrosion operation according to normal corrosion time and requirements, wherein the corrosion depth reaches 0.65mm, so as to obtain a semi-finished embossed plate;
the post-processing treatment comprises the following steps:
d) Dissolving 1.2g of polybutadiene in 120mL of toluene, fully stirring and dissolving, adding 358mL of mercaptopropionic acid and 15mg of 2, 2-dimethoxy-2-phenylacetophenone into a system, reacting for 35min under ultraviolet irradiation, settling the product in ethanol for 4 times after the reaction is finished, drying the product in a vacuum oven to constant weight to obtain carboxyl modified polybutadiene, then dissolving 1g of carboxyl modified polybutadiene in 120mL of chloroform, slowly adding 43mL of carbon nano tube dispersion with the concentration of 12mg/mL, adding 1.6mL of zinc chloride solution, controlling the mass ratio of the carboxyl modified polybutadiene to the zinc chloride to be 1:0.4, stirring overnight to obtain a treatment solution, uniformly brushing the treatment solution on the surface of a semi-finished embossed plate, controlling the brushing thickness to be 50 mu m, clamping the semi-finished product by a soft styrene-butadiene rubber plate after the semi-finished product is completely dried, and carrying out hot pressing treatment for 10min under the conditions of temperature 72 ℃ and pressure of 5.0MPa to obtain a pretreated embossed plate;
e) Putting 1g of nano aluminum oxide into a container, pouring 160mL of methanol, performing 300W ultrasonic dispersion for 50min, dropwise adding 6mL of KH550, heating to 70 ℃ and performing magnetic stirring for 5h, after the reaction is finished, performing suction filtration, fully rinsing the modified nano aluminum oxide with methanol, and drying to obtain pretreated nano aluminum oxide;
f) Weighing pretreated nano aluminum oxide, hydroxyl-terminated polydimethylsiloxane, side methoxy polysiloxane and diisobutyltin dilaurate, wherein the mass ratio of the hydroxyl-terminated polydimethylsiloxane to the side methoxy polysiloxane to the diisobutyltin dilaurate is 61:42:1, the dosage of the pretreated nano aluminum oxide accounts for 17% of the mass of the hydroxyl-terminated polydimethylsiloxane, placing the raw materials into a beaker according to the proportion, stirring at a low speed of 40r/min for 10min, placing the product into a vacuum oven, pumping negative pressure to-0.8 MPa, removing bubbles generated by stirring in the raw materials until the surfaces of the raw materials do not generate bubbles, obtaining a resin mixture, uniformly coating the resin mixture on the surfaces of the pretreated embossed plate, controlling the coating thickness to be 100 mu m, and curing for 4d at 45 ℃ to obtain the finished embossed plate.
Example 3
An etching treatment process for improving the embossing effect of a secondary etching embossing plate comprises etching treatment and post-processing treatment on a steel plate,
the corrosion treatment of the steel plate comprises the following steps:
a) Placing the steel plate baked and trimmed at high temperature in a corrosive liquid, wherein the corrosive liquid is ferric trichloride corrosive liquid with Baume degree of 41, performing shallow corrosion treatment by using a hairbrush, and determining the depth of the shallow corrosion according to embossing requirements, wherein the corrosion depth is 0.3 mm;
b) After shallow corrosion meets the requirements, the steel plate is washed clean and dried by clear water, and is uniformly coated with anti-corrosion glue for preventing ferric trichloride and acid corrosion, the thickness is 10 mu m, and lines and pictures and texts of the concave-convex pressing part are covered, so that the picture is protected;
c) Placing the covered steel plate into a corrosion machine, wherein the corrosion liquid is ferric trichloride corrosion liquid with Baume degree of 41, and carrying out deep corrosion operation according to normal corrosion time and requirements, wherein the corrosion depth reaches 0.7mm, so as to obtain a semi-finished embossed plate;
the post-processing treatment comprises the following steps:
d) Dissolving 1.5g of polybutadiene in 130mL of toluene, fully stirring and dissolving, adding 380mL of mercaptopropionic acid and 17mg of 2, 2-dimethoxy-2-phenylacetophenone into a system, reacting for 40min under ultraviolet irradiation, settling the product in ethanol for 5 times after the reaction is finished, drying the product in a vacuum oven to constant weight to obtain carboxyl modified polybutadiene, then dissolving 1g of carboxyl modified polybutadiene in 130mL of chloroform, slowly adding 46mL of carbon nano tube dispersion with the concentration of 15mg/mL, adding 1.8mL of zinc chloride solution, controlling the mass ratio of the carboxyl modified polybutadiene to the zinc chloride to be 1:0.5, stirring overnight to obtain a treatment solution, uniformly brushing the treatment solution on the surface of a semi-finished embossed plate, controlling the brushing thickness to be 80 mu m, clamping the semi-finished product by a soft styrene-butadiene rubber plate after the semi-finished product is completely dried, and carrying out hot pressing treatment for 13min under the conditions of temperature of 75 ℃ and pressure of 5.5MPa to obtain a pretreated embossed plate;
e) Putting 1g of nano aluminum oxide into a container, pouring 180mL of methanol, performing 400W ultrasonic dispersion for 60min, dropwise adding 8mL of KH550, heating to 75 ℃ and performing magnetic stirring for 6h, after the reaction is finished, performing suction filtration, fully rinsing the modified nano aluminum oxide with methanol, and drying to obtain pretreated nano aluminum oxide;
f) Weighing pretreated nano aluminum oxide, hydroxyl-terminated polydimethylsiloxane, side methoxy polysiloxane and diisobutyltin dilaurate, wherein the mass ratio of the hydroxyl-terminated polydimethylsiloxane to the side methoxy polysiloxane to the diisobutyltin dilaurate is 65:43:1, the dosage of the pretreated nano aluminum oxide accounts for 25% of the mass of the hydroxyl-terminated polydimethylsiloxane, placing the raw materials into a beaker according to the proportion, stirring for 15min at a low speed of 50r/min, placing the product into a vacuum oven, pumping negative pressure to-0.9 MPa, removing bubbles generated by stirring in the raw materials until the surfaces of the raw materials do not generate bubbles, obtaining a resin mixture, uniformly coating the resin mixture on the surfaces of the pretreated embossed plate, controlling the coating thickness to be 120 mu m, and curing for 5d at 50 ℃ to obtain the finished embossed plate.
The full-line fine grain embossing is carried out on the white cardboard film-covered product by using the embossing plate, and the specific process is as follows: white cardboard, printing, laminating, secondary corrosion embossing plate, embossing machine, die cutting and fine mounting and forming. The secondary corrosion embossing plate provided by the invention has smooth edges and corners, is not easy to damage a paper structure, is obtained through comprehensive analysis of a plurality of experimental data, has better forming effect, can not generate surface foaming phenomenon when being used for embossing operation, is set to 70 ℃, is adaptively adjusted to 60-80 ℃ according to the requirement, is not suitable to exceed 80 ℃, is easy to scald products due to the overhigh temperature, and is adjusted in a range of 3-8MPa according to the thickness and the density of white cardboard.
The foregoing is merely a specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any modification or substitution that is not subjected to the inventive work should be covered in the scope of the present invention.
Claims (1)
1. The corrosion treatment process for improving the embossing effect of the secondary corrosion embossing plate comprises corrosion treatment and subsequent processing treatment of a metal material plate, and is characterized in that the corrosion treatment of the metal material plate comprises the following steps:
a) Placing the metal material plate baked and trimmed at high temperature in corrosive liquid, and carrying out shallow corrosion treatment by using a brush, wherein the corrosion depth of the shallow corrosion treatment is 0.1-0.3mm, and determining the depth of the shallow corrosion according to embossing requirements;
b) After shallow corrosion meets the requirements, the metal material plate is washed clean and dried by clear water, and the anti-corrosion glue is uniformly coated to cover lines and pictures of the concave-convex pressing part, so that the picture is protected;
c) Placing the covered metal material plate into a corrosion machine, and performing deep corrosion operation according to normal corrosion time and requirements, wherein the corrosion depth of the deep corrosion treatment is 0.6-0.7mm, so as to obtain a semi-finished embossed plate;
the post-processing treatment comprises the following steps:
d) Dissolving polybutadiene in toluene, fully stirring and dissolving, adding mercaptopropionic acid and 2, 2-dimethoxy-2-phenylacetophenone into a system, reacting for 30-40min under ultraviolet irradiation, after the reaction is finished, settling the product in ethanol for 2-5 times, placing the product in a vacuum oven for drying to constant weight to obtain carboxyl modified polybutadiene, then dissolving the carboxyl modified polybutadiene in chloroform, slowly adding a carbon nano tube dispersion liquid, adding a zinc chloride solution, stirring overnight to obtain a treatment liquid, uniformly brushing the treatment liquid on the surface of a semi-finished embossed plate, clamping the semi-finished embossed plate by a soft styrene-butadiene rubber plate after the treatment liquid is completely dried, and carrying out hot pressing treatment to obtain a pretreated embossed plate, wherein the mass volume ratio of the carboxyl modified polybutadiene to the chloroform solution to the carbon nano tube dispersion liquid to the zinc chloride solution is 1g:100-130mL:40-46mL:1.3-1.8mL, the concentration of the carbon nano tube dispersion liquid is 10-15mg/mL, the mass ratio of the carboxyl modified polybutadiene to the zinc chloride is 1:0.3-0.5, the temperature of the hot pressing treatment is 70-75 ℃ and the hot pressing treatment time is 4.5-75 mu.5 MPa, and the brushing time is 30-80 m;
e) Modifying nano aluminum oxide by KH550, putting the nano aluminum oxide into a container, pouring methanol, performing ultrasonic dispersion for 40-60min, dripping a proper amount of KH550, heating, magnetically stirring for 5-6h, performing suction filtration after the reaction is finished, fully rinsing the modified nano aluminum oxide with methanol, and drying to obtain pretreated nano aluminum oxide;
f) Weighing a certain amount of pretreated nano aluminum oxide, hydroxyl-terminated polydimethylsiloxane, side methoxy polysiloxane and diisobutyltin dilaurate, placing the raw materials in a beaker according to a proportion, uniformly stirring at a low speed, removing bubbles to obtain a resin mixture, uniformly coating the resin mixture on the surface of the pretreated embossed plate, wherein the coating thickness of the resin mixture is 80-120 mu m, and curing to obtain the finished embossed plate, wherein the curing temperature is 40-50 ℃ and the curing time is 3-5d, the mass ratio of the hydroxyl-terminated polydimethylsiloxane, the side methoxy polysiloxane and the diisobutyltin dilaurate is 60-65:40-43:1, and the use amount of the pretreated nano aluminum oxide accounts for 10-25% of the mass of the hydroxyl-terminated polydimethylsiloxane.
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