CN115254792A - Method for cleaning PET film belt for electronic ceramic slurry casting - Google Patents
Method for cleaning PET film belt for electronic ceramic slurry casting Download PDFInfo
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- CN115254792A CN115254792A CN202210882281.2A CN202210882281A CN115254792A CN 115254792 A CN115254792 A CN 115254792A CN 202210882281 A CN202210882281 A CN 202210882281A CN 115254792 A CN115254792 A CN 115254792A
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- 238000004140 cleaning Methods 0.000 title claims abstract description 97
- 238000000034 method Methods 0.000 title claims abstract description 41
- 229920002799 BoPET Polymers 0.000 title claims abstract description 38
- 239000000919 ceramic Substances 0.000 title claims abstract description 34
- 238000007582 slurry-cast process Methods 0.000 title claims description 7
- 238000001035 drying Methods 0.000 claims abstract description 57
- 239000000428 dust Substances 0.000 claims abstract description 57
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 36
- 238000005266 casting Methods 0.000 claims abstract description 24
- 239000003607 modifier Substances 0.000 claims abstract description 24
- 238000011282 treatment Methods 0.000 claims abstract description 19
- 239000002002 slurry Substances 0.000 claims abstract description 16
- 238000004506 ultrasonic cleaning Methods 0.000 claims abstract description 13
- 238000007664 blowing Methods 0.000 claims abstract description 11
- 239000006087 Silane Coupling Agent Substances 0.000 claims abstract description 9
- GCLGEJMYGQKIIW-UHFFFAOYSA-H sodium hexametaphosphate Chemical compound [Na]OP1(=O)OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])O1 GCLGEJMYGQKIIW-UHFFFAOYSA-H 0.000 claims abstract description 9
- 235000019982 sodium hexametaphosphate Nutrition 0.000 claims abstract description 9
- 238000001179 sorption measurement Methods 0.000 claims abstract description 9
- 239000001577 tetrasodium phosphonato phosphate Substances 0.000 claims abstract description 9
- 239000012528 membrane Substances 0.000 claims description 83
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 24
- 239000007788 liquid Substances 0.000 claims description 18
- TXEYQDLBPFQVAA-UHFFFAOYSA-N tetrafluoromethane Chemical compound FC(F)(F)F TXEYQDLBPFQVAA-UHFFFAOYSA-N 0.000 claims description 12
- 238000009832 plasma treatment Methods 0.000 claims description 11
- 238000010345 tape casting Methods 0.000 claims description 7
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 claims description 5
- 229910052731 fluorine Inorganic materials 0.000 claims description 5
- 239000011737 fluorine Substances 0.000 claims description 5
- 230000009471 action Effects 0.000 claims description 4
- 238000009499 grossing Methods 0.000 claims description 4
- 239000002994 raw material Substances 0.000 claims description 4
- AMTWCFIAVKBGOD-UHFFFAOYSA-N dioxosilane;methoxy-dimethyl-trimethylsilyloxysilane Chemical compound O=[Si]=O.CO[Si](C)(C)O[Si](C)(C)C AMTWCFIAVKBGOD-UHFFFAOYSA-N 0.000 claims description 3
- 229920000139 polyethylene terephthalate Polymers 0.000 claims description 3
- 229940083037 simethicone Drugs 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 52
- 239000011248 coating agent Substances 0.000 abstract description 8
- 238000000576 coating method Methods 0.000 abstract description 8
- 230000008569 process Effects 0.000 abstract description 7
- 239000003921 oil Substances 0.000 abstract description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- JZZIHCLFHIXETF-UHFFFAOYSA-N dimethylsilicon Chemical compound C[Si]C JZZIHCLFHIXETF-UHFFFAOYSA-N 0.000 abstract description 2
- 239000000463 material Substances 0.000 abstract description 2
- 239000010408 film Substances 0.000 description 48
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 13
- 241000209094 Oryza Species 0.000 description 10
- 235000007164 Oryza sativa Nutrition 0.000 description 10
- 235000009566 rice Nutrition 0.000 description 10
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 6
- 238000010521 absorption reaction Methods 0.000 description 6
- 239000012459 cleaning agent Substances 0.000 description 6
- 239000007789 gas Substances 0.000 description 6
- 230000037303 wrinkles Effects 0.000 description 6
- 238000002474 experimental method Methods 0.000 description 4
- 238000003682 fluorination reaction Methods 0.000 description 4
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 3
- 230000002411 adverse Effects 0.000 description 3
- 238000009360 aquaculture Methods 0.000 description 3
- 244000144974 aquaculture Species 0.000 description 3
- 125000000118 dimethyl group Chemical group [H]C([H])([H])* 0.000 description 3
- 238000001914 filtration Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- 229910052698 phosphorus Inorganic materials 0.000 description 3
- 239000011574 phosphorus Substances 0.000 description 3
- 229920002545 silicone oil Polymers 0.000 description 3
- 241000196324 Embryophyta Species 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 229910052581 Si3N4 Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- PMHQVHHXPFUNSP-UHFFFAOYSA-M copper(1+);methylsulfanylmethane;bromide Chemical compound Br[Cu].CSC PMHQVHHXPFUNSP-UHFFFAOYSA-M 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 235000015097 nutrients Nutrition 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B5/00—Cleaning by methods involving the use of air flow or gas flow
- B08B5/04—Cleaning by suction, with or without auxiliary action
- B08B5/043—Cleaning travelling work
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/04—Cleaning involving contact with liquid
- B08B3/08—Cleaning involving contact with liquid the liquid having chemical or dissolving effect
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/04—Cleaning involving contact with liquid
- B08B3/10—Cleaning involving contact with liquid with additional treatment of the liquid or of the object being cleaned, e.g. by heat, by electricity or by vibration
- B08B3/12—Cleaning involving contact with liquid with additional treatment of the liquid or of the object being cleaned, e.g. by heat, by electricity or by vibration by sonic or ultrasonic vibrations
- B08B3/123—Cleaning travelling work, e.g. webs, articles on a conveyor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/004—Nozzle assemblies; Air knives; Air distributors; Blow boxes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B5/00—Drying solid materials or objects by processes not involving the application of heat
- F26B5/16—Drying solid materials or objects by processes not involving the application of heat by contact with sorbent bodies, e.g. absorbent mould; by admixture with sorbent materials
-
- 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
- Y02W30/62—Plastics recycling; Rubber recycling
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Molecular Biology (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Cleaning In General (AREA)
Abstract
The invention discloses a method for cleaning a PET film belt for casting electronic ceramic slurry, which comprises the following steps: the method comprises the following steps: arranging a cleaning unit; step two: a dust suction area; step three: an ultrasonic cleaning zone; step four: a sponge roller adsorption zone; step five: a drying zone; step six: and a blowing treatment area. When the modified cleaning solution is used for cleaning the film belt, the film belt modifier has a slight cleaning effect on the film belt and can be bonded with a modified layer of the film belt to reduce the stripping force of the film belt, the cleaning effect of the cleaning solution can be increased by ethanol, the coating uniformity of the modifier can be increased by dimethyl silicon oil, and the cleaning effect of sodium hexametaphosphate and a silane coupling agent on the film belt is better; the method is simple and easy to implement, and can indirectly and obviously improve the quality of the blank and reduce the material cost in the production and processing process of the electronic ceramic.
Description
Technical Field
The invention relates to the technical field of electronic ceramic slurry, in particular to a method for cleaning a PET film belt for tape casting of electronic ceramic slurry.
Background
The tape casting is that the crushed powder and organic plasticizer solution are mixed according to a proper proportion to prepare slurry with certain viscosity, the slurry flows down from a container, is scraped and pressed by a scraper with certain thickness and is coated on a special base band, after drying and curing, the thin film of a green band is peeled off from the top, and then the green band is subjected to processing treatments such as punching, laminating and the like according to the size and the shape of a finished product to prepare a ceramic green body to be sintered.
Whether the green sheet can be easily peeled off from the base tape is one of the key factors for obtaining a green sheet having excellent energy flow. If the peeling force of the film tape is more than 50gf/in, the green body is easily deformed or even broken during the peeling process. The peel force of the film tape is suitably selected from the range of 10gf/in to 30 gf/in. At present, in the casting process of electronic ceramic slurry such as aluminum nitride, aluminum oxide and the like, a film has two use modes: 1) The membrane belt is disposable; 2) The membrane tape was used several times without washing. The first way is for the ceramic chip manufacturer to bring the film back to the supplier for processing, and the disposable use increases the manufacturing cost of the ceramic chip; the second mode can reduce the cost of the film belt after being used for many times, but the product quality problem is often caused by the reduction of the peeling force of the film belt or the insufficient cleaning of the film belt after being used for 5 to 10 times. Therefore, the reasonable method for cleaning the PET film belt for casting is one of the key problems to be solved in the preparation of the electronic ceramic slurry.
Disclosure of Invention
The invention aims to provide a method for cleaning a PET film belt for casting electronic ceramic slurry, which aims to solve the problems in the background technology.
In order to solve the technical problems, the invention provides the following technical scheme: a method for cleaning a PET film belt for electronic ceramic slurry casting comprises the following steps:
the method comprises the following steps: arranging a cleaning unit, wherein the cleaning unit is arranged at the tail part of the casting machine after the membrane belt is stripped from the blank body, and the cleaning unit sequentially comprises a dust suction area, an ultrasonic cleaning area, a sponge roller adsorption area, a drying area and an air blowing treatment area;
step two: the dust collection area is provided with two rows of dust collection ports which are transversely arranged in the running direction of the film belt in a staggered manner, and the film belt performs dust collection treatment through the dust collection area at a constant speed;
step three: an ultrasonic cleaning area, wherein the membrane strip is put into the modified cleaning solution and cleaned for 5-10min under the auxiliary action of ultrasonic waves;
step four: the sponge roller adsorption area is used for smoothing the membrane strip by utilizing an upper sponge roller and a lower sponge roller and adsorbing a small amount of residual modified cleaning solution on the membrane strip;
step five: a drying area, wherein the drying area is provided with an upper drying plate and a lower drying plate, the membrane belt adsorbed by the sponge roller in the fourth step passes through the two drying plates to complete drying, and hot air blown by the drying plates is used for drying the membrane belt;
step six: and the blowing treatment area is provided with a plasma treatment instrument, the plasma treatment instrument blows the mixed gas of methane and carbon tetrafluoride to the surface of the membrane tape, and the dried membrane tape passes through the plasma treatment instrument to obtain the cleaned PET membrane tape for electronic ceramic slurry tape casting.
In a preferred embodiment, in the second step, the dust suction ports on the dust suction area are uniformly arranged at intervals, 5-8 dust suction ports are arranged in each row per meter, the distance between the two rows of dust suction ports is 0.5-1m, and dust on the film belt can be sucked by using the dust suction ports.
In a preferred embodiment, the dust collection area adopts an air draft fan to collect dust, the frequency of the air draft fan is 4-8HZ, the frequency is too high, the air draft amount is too large, the membrane belt is wrinkled, and the dust collection effect is poor if the air draft amount is too low.
In a preferred embodiment, the modified cleaning solution in the third step includes the following raw materials by mass percent: 80-85% of membrane band modifier, 5-10% of ethanol, 2-4% of simethicone, 2-4% of sodium hexametaphosphate and 2-4% of silane coupling agent, wherein the membrane band modifier has slight cleaning effect on a membrane band and can be bonded with a modified layer of the membrane band to reduce the stripping force of the membrane band, the ethanol can increase the cleaning effect of the cleaning liquid, more than 10% of the membrane band modifier can generate the cleaning effect on the original modified layer of the membrane band and has adverse effect, less than 5% of the membrane band modifier has poor effect, the simethicone can increase the coating uniformity of the modifier, more than 4% of the membrane band modifier can obviously reduce the cleaning effect of the cleaning liquid, less than 2% of the membrane band modifier has poor effect, and the sodium hexametaphosphate and the silane coupling agent have better cleaning effect on the membrane band.
In a preferred embodiment, the membrane strip modifier is one or two of an electronic fluorination liquid or fluorine oil, and the electronic fluorination liquid or the fluorine oil has a cleaning effect on the membrane strip and can be bonded with a modification layer of the membrane strip to reduce membrane strip peeling.
In a preferred embodiment, the modified cleaning liquid immerses the film belt by 0.5-1mm in the third step, the ultrasonic cleaning temperature in the third step is 30-40 ℃, the ultrasonic power is 15-25W, the modified cleaning liquid immerses the film belt by a depth less than 0.5mm, the film belt is easy to wrinkle when moving by more than 1mm, and the ultrasonic power is less than 15W, the film belt is easy to wrinkle and deform when moving by more than 25W.
In a preferred embodiment, in the fifth step, the two drying plates are preheated, the preheating temperature is 40-45 ℃, the hot air temperature during the drying in the fifth step is 45-60 ℃, the frequency of the hot air blower is 4-8HZ, the drying effect is insufficient when the hot air temperature is less than 45 ℃, the bonding effect is poor, the hot air temperature is greater than 60 ℃, the structure of the film belt is easily damaged, the frequency of the hot air blower is too high, the air blowing amount is too large, the wrinkling of the film belt is caused, and the drying effect is not good when the air blowing amount is too low.
In a preferable embodiment, in the fifth step, the bonding between the film strip and the modified cleaning solution is accelerated by using hot air, and the drying time is 5-10min.
In a preferred embodiment, the volume ratio of the mixed gas of methane and carbon tetrafluoride in the sixth step is 1: (0.8-1.2), preheating the plasma treatment instrument in the sixth step, wherein the preheating temperature is 35-40 ℃, and the methane and the carbon tetrafluoride can form a modified layer with a cross-linked network structure on the surface of the membrane strip, so that the stripping force of the membrane strip can be improved.
In a preferred embodiment, the treatment time of the membrane strip by using the mixed gas of methane and carbon tetrafluoride in the sixth step is 5-8min.
Compared with the prior art, the invention has the following beneficial effects:
1. the invention adopts the method for cleaning the PET film belt on line at the tail part of the casting machine, the operation process is simple and convenient, the utilization rate of the PET film belt can be improved, the stripping force of the PET film belt can be improved, the PET film belt is clean, the product quality is ensured, when the film belt is cleaned by adopting the modified cleaning solution, the film belt modifier has slight cleaning effect on the film belt and can be bonded with a modified layer of the film belt to reduce the stripping force of the film belt, the ethanol can increase the cleaning effect of the cleaning solution, the coating uniformity of the dimethyl silicon oil modifier can be increased, and the cleaning effect of the sodium hexametaphosphate and the silane coupling agent on the film belt is better; the method is simple and easy to implement, and can indirectly and obviously improve the quality of the blank and reduce the material cost in the production and processing process of the electronic ceramic;
2. according to the invention, the film belt is subjected to dust collection treatment by using the dust collection area, then is cleaned by using the modified cleaning liquid under the ultrasonic wave assistance effect, then is adsorbed by using the sponge roller, is dried and bonded by using the drying area, and finally is modified on the surface of the PET film belt by using methane and carbon tetrafluoride, so that the stripping force of the PET film belt is increased, the service life of the PET film belt is ensured, the process is simple, and the cleaning effect on the PET film belt is better.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a block diagram of the process flow of example 1 of the present invention;
FIG. 2 is a block diagram of the process flow of example 3 of the present invention;
FIG. 3 is a view of a cast green body after treatment in example 4 of the present invention;
FIG. 4 is a view of a casting blank after treatment in example 5 of the present invention;
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1:
referring to fig. 1, the present invention provides a method for cleaning a PET film tape for casting an electronic ceramic slurry, comprising the steps of:
the method comprises the following steps: the method comprises the following steps of arranging a cleaning unit, wherein the cleaning unit is arranged at the tail part of a casting machine after a membrane belt is stripped from a blank body, and sequentially comprises a dust absorption area, an ultrasonic cleaning area, a sponge roller adsorption area, a drying area and an air blowing treatment area;
step two: the dust collection area is provided with two rows of dust collection ports which are transversely arranged in the running direction of the film belt in a staggered manner, and the film belt performs dust collection treatment through the dust collection area at a constant speed;
step three: an ultrasonic cleaning area, wherein the membrane strip is placed in the modified cleaning solution and cleaned for 8min under the auxiliary action of ultrasonic waves;
step four: the sponge roller adsorption area is used for smoothing the film belt by utilizing an upper sponge roller and a lower sponge roller and adsorbing a small amount of residual modified cleaning liquid on the film belt;
step five: a drying area, wherein the drying area is provided with an upper drying plate and a lower drying plate, the membrane belt adsorbed by the sponge roller in the fourth step passes through the two drying plates to complete drying, and hot air blown by the drying plates is used for drying the membrane belt;
step six: and the blowing treatment area is provided with a plasma treatment instrument, the plasma treatment instrument blows the mixed gas of methane and carbon tetrafluoride to the surface of the membrane tape, and the dried membrane tape passes through the plasma treatment instrument to obtain the cleaned PET membrane tape for electronic ceramic slurry tape casting.
In a preferred embodiment, in the second step, the dust suction ports on the dust suction area are uniformly arranged at intervals, each row of dust suction ports is provided with 7 dust suction ports per meter, the distance between the two rows of dust suction ports is 0.8m, and dust on the film belt can be sucked by using the dust suction ports.
In a preferred embodiment, the dust collection area adopts an air draft fan to collect dust, the frequency of the air draft fan is 6HZ, the frequency is too high, the air draft amount is too large, the membrane belt is wrinkled, and the dust collection effect is poor if the air draft amount is too low.
In a preferred embodiment, the modified cleaning solution in the third step includes the following raw materials by mass percent: 84% of membrane band modifier, 7% of ethanol, 3% of dimethyl silicone oil, 3% of sodium hexametaphosphate and 3% of silane coupling agent, wherein the membrane band modifier has a slight cleaning effect on a membrane band and can be bonded with a modified layer of the membrane band to reduce the stripping force of the membrane band, the ethanol can increase the cleaning effect of the cleaning liquid, more than 10% of the ethanol can generate a cleaning effect on an original modified layer of the membrane band, the ethanol has adverse effects, the effect is not good when the coating uniformity of the modifier is lower than 5%, the cleaning effect of the cleaning liquid is obviously reduced when the coating uniformity of the modifier is higher than 4%, the effect is not good when the coating uniformity is lower than 2%, and the cleaning effect of the sodium hexametaphosphate and the silane coupling agent on the membrane band is better.
In a preferred embodiment, the membrane band modifier is an electron fluorination liquid.
In a preferred embodiment, the modified cleaning solution immerses the membrane strip by 0.8mm in the third step, the ultrasonic cleaning temperature in the third step is 35 ℃, the ultrasonic power is 20W, the depth of the modified cleaning solution immersing the membrane strip is less than 0.5mm, the membrane strip is easy to wrinkle when moving by more than 1mm, and the ultrasonic power is less than 15W, the cleaning effect is poor, and the membrane strip is easy to wrinkle and deform when more than 25W.
In a preferred embodiment, in the fifth step, the two drying plates are preheated, the preheating temperature is 43 ℃, the hot air temperature during the drying in the fifth step is 55 ℃, the hot air fan frequency is 6HZ, the hot air temperature is less than 45 ℃, the drying effect is insufficient, the bonding effect is poor, the hot air temperature is greater than 60 ℃, the structure of the film strip is easily damaged, the hot air fan frequency is too high, the air blowing amount is too large, the film strip is wrinkled, and the drying effect is not good if the hot air temperature is too low.
In a preferred embodiment, in the fifth step, the bonding between the film belt and the modified cleaning solution is accelerated by using hot air, and the drying time is 8min.
In a preferred embodiment, the volume ratio of the mixed gas of methane and carbon tetrafluoride in the sixth step is 1: and 1.2, preheating the plasma treatment instrument in the sixth step, wherein the preheating temperature is 38 ℃, and the methane and the carbon tetrafluoride can enable the surface of the membrane strip to form a modified layer with a cross-linked network structure, so that the stripping force of the membrane strip can be improved.
In a preferred embodiment, the treatment time of the membrane strip by using the mixed gas of methane and carbon tetrafluoride in the sixth step is 6min.
Example 2:
different from the embodiment 1, the invention provides a method for cleaning a PET film belt for casting electronic ceramic slurry, wherein the film belt modifier is a mixture of electronic fluorinated liquid and fluorine oil, and the mass ratio of the electronic fluorinated liquid to the fluorine oil is 1:9.
Example 3:
referring to fig. 2, the present invention provides a method for cleaning a PET film tape for casting an electronic ceramic slurry, comprising the steps of:
the method comprises the following steps: the method comprises the following steps of arranging a cleaning unit, wherein the cleaning unit is arranged at the tail part of a casting machine after a membrane belt is stripped from a blank body, and sequentially comprises a dust absorption area, an ultrasonic cleaning area, a sponge roller adsorption area and a drying area;
step two: the dust collection area is provided with two rows of dust collection ports which are transversely arranged in the running direction of the film belt in a staggered manner, and the film belt performs dust collection treatment through the dust collection area at a constant speed;
step three: an ultrasonic cleaning area, wherein the membrane strip is placed in the modified cleaning solution and cleaned for 8min under the auxiliary action of ultrasonic waves;
step four: the sponge roller adsorption area is used for smoothing the membrane strip by utilizing an upper sponge roller and a lower sponge roller and adsorbing a small amount of residual modified cleaning solution on the membrane strip;
step five: a drying area, wherein the drying area is provided with an upper drying plate and a lower drying plate, the membrane belt adsorbed by the sponge roller in the fourth step passes through the two drying plates to complete drying, and hot air blown by the drying plates is used for drying the membrane belt; and obtaining the cleaned PET film belt for electronic ceramic slurry tape casting.
In a preferred embodiment, in the second step, the dust suction ports on the dust suction area are uniformly arranged at intervals, 7 dust suction ports are arranged in each row per meter, the distance between the two rows of dust suction ports is 0.8m, and dust on the film belt can be sucked by using the dust suction ports.
In a preferred embodiment, the dust collection area adopts an air draft fan to collect dust, the frequency of the air draft fan is 6HZ, the frequency is too high, the air draft amount is too large, the membrane belt is wrinkled, and the dust collection effect is poor if the air draft amount is too low.
In a preferred embodiment, the modified cleaning solution in the third step includes the following raw materials by mass percent: the cleaning agent comprises 84% of membrane band modifier, 7% of ethanol, 3% of dimethyl silicone oil, 3% of sodium hexametaphosphate and 3% of silane coupling agent, wherein the membrane band modifier has a slight cleaning effect on a membrane band and can be bonded with a modified layer of the membrane band to reduce the stripping force of the membrane band, the ethanol can increase the cleaning effect of the cleaning agent, more than 10% of the ethanol can generate a cleaning effect on the original modified layer of the membrane band, the ethanol has adverse effects, the coating uniformity of the modifier can be increased, more than 4% of the ethanol can obviously reduce the cleaning effect of the cleaning agent, the ethanol can increase the cleaning effect of the cleaning agent, the ethanol can decrease the cleaning effect of the cleaning agent, the ethanol less than 2% of the ethanol can generate a cleaning effect on the original modified layer of the membrane band, the coating uniformity of the dimethyl silicone oil can be increased, the cleaning effect of the cleaning agent can be obviously reduced by more than 4%, and the cleaning effect of the sodium hexametaphosphate and the silane coupling agent on the membrane band is better.
In a preferred embodiment, the membrane band modifier is an electron fluorination liquid.
In a preferred embodiment, the modified cleaning liquid immerses the film strip by 0.8mm in the third step, the ultrasonic cleaning temperature in the third step is 35 ℃, the ultrasonic power is 20W, the modified cleaning liquid immerses the film strip by a depth less than 0.5mm, the film strip is easy to wrinkle during the movement of the film strip larger than 1mm, and the ultrasonic power is less than 15W, the film strip is easy to wrinkle and deform during the cleaning by more than 25W.
In a preferred embodiment, in the fifth step, the two drying plates are preheated, the preheating temperature is 43 ℃, the hot air temperature during the drying in the fifth step is 55 ℃, the hot air fan frequency is 6HZ, the hot air temperature is less than 45 ℃, the drying effect is insufficient, the bonding effect is poor, the hot air temperature is greater than 60 ℃, the structure of the film strip is easily damaged, the hot air fan frequency is too high, the air blowing amount is too large, the film strip is wrinkled, and the drying effect is not good if the hot air temperature is too low.
In a preferred embodiment, in the fifth step, the bonding between the film belt and the modified cleaning solution is accelerated by using hot air, and the drying time is 8min.
The PET film tapes cleaned in the embodiments 1-3 are respectively selected as an experiment group 1, an experiment group 2 and an experiment group 3, the PET film tapes without being cleaned are selected as a control group (the film tapes are provided by a PET film tape manufacturer in Beijing, are special for release films of ceramic blanks, and have the peeling force of 10-30g/25mm, so that the film tapes after 1-5 times of use can be normally used, the film tapes in the experiment groups 1, 2 and 3 and the control group are used for 10 times), the peeling force of the PET film tapes and whether residual detection exists after the blanks are peeled are respectively carried out, and the detection results are as shown in the table I:
watch 1
As can be seen from the table I, the surface tension of the PET film belt treated by the PET film belt cleaning method for electronic ceramic slurry casting is reduced, and the stripping force is improved.
Example 4:
the PET film tape which had been used three times was used for casting after being treated by the procedure described in example 1 of the present invention, and the resulting cast body was free from cracks on the surface thereof as shown in FIG. 3.
Comparative example:
the PET film tape which has been used three times is directly used for silicon nitride ceramic slurry casting molding (the casting molding conditions are completely consistent with those of example 4), and the obtained casting blank body has cracks on the surface as shown in figure 4.
As can be seen from example 4 and comparative example, the PET film belt treated by the method of the invention has improved quality and is more suitable for tape casting of electronic paste.
According to the invention, aquaculture and rice planting are combined, tail water generated by aquaculture is discharged into a rice field, and is absorbed by rice, so that the absorption of rice nutrient substances can be improved, the content of organic matters in the water body can be reduced, and then the water body is filtered, precipitated, degraded and absorbed by the first filtering dam, the sedimentation tank, the second filtering dam, the biological purification tank, the third filtering dam and the water cleaning tank for aquatic plants, so that the tail water discharged from a fishpond reaches the use standard and is used in the fishpond in a backflow mode, the water consumption for aquaculture can be effectively saved, the aquatic plants are planted in the circulation channel, and the absorption effect on the organic matters is better; according to the invention, the baffle plates are arranged in the rice field, and the water quality monitor is arranged at the water inlet end of the rice field, so that the water body entering the rice field can be detected, and the angles of the baffle plates are adjusted according to the content of nitrogen and phosphorus in the water body and the different absorption effects of the rice on the nitrogen and the phosphorus in different periods, thereby controlling the retention time of the water body in the rice field, and enabling the rice to have better absorption effects on the nitrogen and the phosphorus in the water body and better treatment effect on the water body.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described above, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A PET film belt cleaning method for electronic ceramic slurry casting is characterized by comprising the following steps: the method comprises the following steps:
the method comprises the following steps: arranging a cleaning unit, wherein the cleaning unit is arranged at the tail part of the casting machine after the membrane belt is stripped from the blank body, and the cleaning unit sequentially comprises a dust suction area, an ultrasonic cleaning area, a sponge roller adsorption area, a drying area and an air blowing treatment area;
step two: the dust collection area is provided with two rows of dust collection ports which are transversely arranged in the running direction of the film belt in a staggered manner, and the film belt performs dust collection treatment through the dust collection area at a constant speed;
step three: an ultrasonic cleaning area, wherein the membrane strip is put into the modified cleaning solution and cleaned for 5-10min under the auxiliary action of ultrasonic waves;
step four: the sponge roller adsorption area is used for smoothing the membrane strip by utilizing an upper sponge roller and a lower sponge roller and adsorbing a small amount of residual modified cleaning solution on the membrane strip;
step five: a drying area, wherein the drying area is provided with an upper drying plate and a lower drying plate, the membrane belt adsorbed by the sponge roller in the fourth step passes through the two drying plates to complete drying, and hot air blown by the drying plates is used for drying the membrane belt;
step six: and the blowing treatment area is provided with a plasma treatment instrument, the plasma treatment instrument blows mixed gas of methane and carbon tetrafluoride to the surface of the membrane strip, and the dried membrane strip passes through the plasma treatment instrument to obtain the cleaned PET membrane strip for the electronic ceramic slurry tape casting.
2. The method of claim 1, wherein the cleaning of the PET film tape for casting of electronic ceramic paste comprises: in the second step, the dust suction ports on the dust suction area are uniformly arranged at intervals, 5-8 dust suction ports are arranged in each row per meter, and the distance between the two rows of dust suction ports is 0.5-1m.
3. The method of claim 2, wherein the cleaning of the PET film tape for casting of electronic ceramic slurry comprises: the dust collection area adopts an air draft fan for dust collection, and the frequency of the air draft fan is 4-8HZ.
4. The method of claim 1 for cleaning a PET film tape for casting of electronic ceramic paste, wherein: the modified cleaning solution in the third step comprises the following raw materials in percentage by mass: 80-85% of membrane band modifier, 5-10% of ethanol, 2-4% of simethicone, 2-4% of sodium hexametaphosphate and 2-4% of silane coupling agent.
5. The method of claim 4, wherein the cleaning of the PET film tape for electronic ceramic slurry casting comprises: the membrane band modifier is one or two of electronic fluorinated liquid or fluorine oil.
6. The method of claim 1, wherein the cleaning of the PET film tape for casting of electronic ceramic paste comprises: and immersing the membrane belt by the modified cleaning liquid for 0.5-1mm in the third step, wherein the ultrasonic cleaning temperature in the third step is 30-40 ℃, and the ultrasonic power is 15-25W.
7. The method of claim 1, wherein the cleaning of the PET film tape for casting of electronic ceramic paste comprises: and in the fifth step, the two drying plates are preheated, the preheating temperature is 40-45 ℃, the hot air temperature is 45-60 ℃ during drying in the fifth step, and the frequency of a hot air fan is 4-8HZ.
8. The method of claim 7, wherein the cleaning of the PET film tape for casting of electronic ceramic paste comprises: and in the fifth step, the bonding between the membrane belt and the modified cleaning solution is accelerated by utilizing hot air, and the drying time is 5-10min.
9. The method of claim 1 for cleaning a PET film tape for casting of electronic ceramic paste, wherein: in the sixth step, the volume ratio of the mixed gas of methane and carbon tetrafluoride is 1: (0.8-1.2), preheating the plasma processor in the sixth step, wherein the preheating temperature is 35-40 ℃.
10. The method of claim 1, wherein the cleaning of the PET film tape for casting of electronic ceramic paste comprises: and in the sixth step, the treatment time of the membrane strip by using the mixed gas of methane and carbon tetrafluoride is 5-8min.
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