CN105777195A - Method for preparing high-wettability coated layer on ceramic geometric packing - Google Patents
Method for preparing high-wettability coated layer on ceramic geometric packing Download PDFInfo
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- CN105777195A CN105777195A CN201610144385.8A CN201610144385A CN105777195A CN 105777195 A CN105777195 A CN 105777195A CN 201610144385 A CN201610144385 A CN 201610144385A CN 105777195 A CN105777195 A CN 105777195A
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- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/46—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on titanium oxides or titanates
- C04B35/462—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on titanium oxides or titanates based on titanates
- C04B35/465—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on titanium oxides or titanates based on titanates based on alkaline earth metal titanates
- C04B35/468—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on titanium oxides or titanates based on titanates based on alkaline earth metal titanates based on barium titanates
- C04B35/4682—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on titanium oxides or titanates based on titanates based on alkaline earth metal titanates based on barium titanates based on BaTiO3 perovskite phase
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- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
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- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/009—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone characterised by the material treated
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- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
- C04B41/50—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials
- C04B41/5025—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials with ceramic materials
- C04B41/5035—Silica
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- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/80—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone of only ceramics
- C04B41/81—Coating or impregnation
- C04B41/85—Coating or impregnation with inorganic materials
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Abstract
The invention discloses a method for preparing a high-wettability coated layer on ceramic geometric packing, and belongs to the technical field of geometric packing treatment. The method comprises the following steps: dissolving barium chloride in a hydrochloric acid solution so as to prepare a barium chloride hydrochloric acid mixed solution; mixing with a gel solution prepared from tetrabutyl titanate, performing treatment of rotary evaporation, milling, screening, cold pressing, calcining and annealing so as to prepare a ceramic geometric packing plate, performing emulsion reaction with styrene, crylic acid and the like, performing water-bath heating filtration so as to obtain filter cakes, dissolving in absolute ethyl alcohol, further dripping tetraethoxysilane so as to obtain resin slurry, and coating the surface of the ceramic geometric packing plate, so as to obtain the high-wettability coated layer. The method has the beneficial effects that the preparation steps are simple, the mass transfer efficiency and the wettability of the ceramic geometric packing can be effectively improved, the coated layer is good in pollution resistance, and good in mechanical strength, that is, the mechanical strength is up to 721-730MPa, and the ceramic geometric packing is not easy to break in the pressing process.
Description
Technical field
The preparation method that the present invention relates to a kind of ceramic corrugated filler high wettability coating, belongs to ripple packing processing technology field.
Background technology
Ripple packing is current application field of water treatment Application comparison a kind of Novel water-purifying material widely.The kind of stricture of vagina filler: mainly have pottery, netted, complex wave, sinusoidal dislocation ripple, Trapezium oblique wave, ramp wave, S ripple, TG-10, T20, big M ripple, full ladder ripple, two-way ripple, honeycomb inclined-tube filler, water collection device, the kind such as shower nozzle.The advantages such as this product has good cooling results, and resistance is little, light capacity, and intensity is high, fire-retardant corrosion resistant.It is widely used in hyperbola, gravity-flow ventilation tower, machine power tower, cement frame cooling tower, cross-flow type and counterflow cooling tower.Ceramic corrugated filler is a kind of Novel standardized packing, and it is made up of many filler unit bodies with same geometry.Due to the structure that pottery is unique, having good hydrophilicity, the tiled serpentine passage capable of being of turbulence and air-flow that its surface can form very thin liquid film promotes air-flow but does not stop air-flow.Surface texture has good wet performance, can make that liquid accelerates flowing, to make filler dispersed phase holdup be down to minimum.Thus reducing the chance of overheated, polymerization and coking.Corrugated wire gauze packing is also known as screen waviness packings.It is vertically overlapped by screen waviness sheet and assembles, and the advantage of this filler is that pressure drop is low, and flux is high, and liquid holdup is little, and enlarge-effect is little, and its shortcoming is that cost is high, and stain resistance is poor, it is difficult to clean.Ripple packing very easily ruptures in pressing process, easily forms mass transfer dead band at crest and trough place, and mass-transfer efficiency is low, and wettability is poor.Therefore work out a kind of method improving ripple packing mass-transfer efficiency and wettability, have great importance.
Summary of the invention
The technical problem to be solved: very easily rupture in pressing process for ripple packing, mass transfer dead band is easily formed at crest and trough place, mass-transfer efficiency is low, the drawback of wettability difference, provide a kind of by barium chloride being dissolved in hydrochloric acid solution and preparing barium chloride hydrochloric acid mixed solution, the gel solution prepared with butyl titanate mixes, rotated evaporation, mill and sieve, cold pressing, calcining, annealing prepares ceramic corrugated filler plate, again through styrene, the emulsion reactions such as acrylic acid, heating in water bath filters to obtain filter cake, it is dissolved in dehydrated alcohol, drip tetraethyl orthosilicate again and prepare resin grout liquid, it is coated on the method that ceramic corrugated filler plate surface prepares high wettability coating, to reach to improve the purpose of ripple packing mass-transfer efficiency.Preparation process of the present invention is simple, and gained strength of coating is high so that ripple packing not easy fracture in pressing process.
For solving above-mentioned technical problem, the present invention adopts the technical scheme as described below to be:
(1) 1:5 in mass ratio, weigh barium chloride and be placed in the hydrochloric acid solution that mass concentration is 10%, stirring mixing 10～15min, it is prepared into barium chloride hydrochloric acid mixed solution, then 1:5 in mass ratio, weigh the butyl titanate with molal weights such as barium chlorides in dehydrated alcohol, stirring is mixed with to obtain gel solution, 1:1 in mass ratio subsequently, mixes 25～30min by gel solution with the stirring of barium chloride hydrochloric acid mixed solution, is prepared into Barium metatitanate. coagulant liquid；
(2) the Barium metatitanate. coagulant liquid of above-mentioned preparation is placed at 65～80 DEG C, rotary evaporated to dryness, it is milled sieve subsequently, being prepared into 350～400 order gel powders, collect gel powder and be placed under 15～20MPa, cold pressing 10～15min, it is prepared into ripple packing structure, after having colded pressing, being placed in 850～900 DEG C of Muffle furnaces, insulation calcining 2～3h after annealing processes, controlling annealing rate is 5 DEG C/min, to be annealed complete after, be prepared into ceramic corrugated filler plate, standby；
(3) deionized water of 19～20g styrene, 0.5～0.7g acrylic acid and 80～85mL is weighed respectively, it is placed in there-necked flask after stirring is mixed, after 35～40 DEG C of emulsified reaction 10～15min, it is slowly added dropwise the sodium peroxydisulfate solution that 0.1～0.2mL mass concentration is 10%, control time for adding is 10min, after being added dropwise to complete, heating in water bath 3～4h at 75～80 DEG C；
(4) to be heated complete after, it is filtered and collects filter cake, subsequently by solid-to-liquid ratio 1:5, filter cake is placed in dehydrated alcohol, under 200～300W, ultrasonic disperse processes 10～15min, after ultrasonic disperse completes, it is simultaneously added dropwise 2～3mL tetraethyl orthosilicate and 5～6mL mass concentration is the ammonia spirit of 10%, control time for adding and be 30～40min；
(5) after being added dropwise to complete, it is placed at 45～50 DEG C heating in water bath 5～8h, it is prepared into the resin grout liquid that thick solid content is 18～20%, ceramic corrugated filler plate ethanol solution step (2) prepared subsequently dries after washing 3～5 times naturally, again ceramic corrugated filler plate is tilted 45 °, resin grout liquid is coated on ceramic corrugated filler plate surface, to be coated complete after, dry 6～8h at 100～120 DEG C, can be prepared into a kind of ceramic corrugated filler high wettability coating.
The ceramic corrugated filler high wettability coating layer thickness of the present invention is 5～7mm, and coating density is about 0.9～1.1kg/L, and case hardness is 2～3H, and mechanical strength reaches 721～730MPa.
The present invention is compared with additive method, and Advantageous Effects is:
(1) preparation process of the present invention is simple, can be effectively improved mass-transfer efficiency and the wettability of ripple packing；
(2) this coating stain resistance is strong, and mechanical strength is high, reaches 721～730MPa, not easy fracture in pressing process.
Detailed description of the invention
First 1:5 in mass ratio, weigh barium chloride and be placed in the hydrochloric acid solution that mass concentration is 10%, stirring mixing 10～15min, it is prepared into barium chloride hydrochloric acid mixed solution, then 1:5 in mass ratio, weigh the butyl titanate with molal weights such as barium chlorides in dehydrated alcohol, stirring is mixed with to obtain gel solution, 1:1 in mass ratio subsequently, mixes 25～30min by gel solution with the stirring of barium chloride hydrochloric acid mixed solution, is prepared into Barium metatitanate. coagulant liquid；Then the Barium metatitanate. coagulant liquid of above-mentioned preparation is placed at 65～80 DEG C, rotary evaporated to dryness, it is milled sieve subsequently, being prepared into 350～400 order gel powders, collect gel powder and be placed under 15～20MPa, cold pressing 10～15min, it is prepared into ripple packing structure, after having colded pressing, being placed in 850～900 DEG C of Muffle furnaces, insulation calcining 2～3h after annealing processes, controlling annealing rate is 5 DEG C/min, to be annealed complete after, be prepared into ceramic corrugated filler plate, standby；Weigh the deionized water of 19～20g styrene, 0.5～0.7g acrylic acid and 80～85mL respectively, it is placed in there-necked flask after stirring is mixed, after 35～40 DEG C of emulsified reaction 10～15min, it is slowly added dropwise the sodium peroxydisulfate solution that 0.1～0.2mL mass concentration is 10%, control time for adding is 10min, after being added dropwise to complete, heating in water bath 3～4h at 75～80 DEG C；To be heated complete after, it is filtered and collects filter cake, subsequently by solid-to-liquid ratio 1:5, filter cake is placed in dehydrated alcohol, under 200～300W, ultrasonic disperse processes 10～15min, after ultrasonic disperse completes, it is simultaneously added dropwise 2～3mL tetraethyl orthosilicate and 5～6mL mass concentration is the ammonia spirit of 10%, control time for adding and be 30～40min；Finally after being added dropwise to complete, it is placed at 45～50 DEG C heating in water bath 5～8h, it is prepared into the resin grout liquid that thick solid content is 18～20%, naturally dry after subsequently standby ceramic corrugated filler plate ethanol solution being washed 3～5 times, again ceramic corrugated filler plate is tilted 45 °, resin grout liquid is coated on ceramic corrugated filler plate surface, to be coated complete after, dry 6～8h at 100～120 DEG C, can be prepared into a kind of ceramic corrugated filler high wettability coating.
Example 1
First 1:5 in mass ratio, weigh barium chloride and be placed in the hydrochloric acid solution that mass concentration is 10%, stirring mixing 10min, it is prepared into barium chloride hydrochloric acid mixed solution, then 1:5 in mass ratio, weigh the butyl titanate with molal weights such as barium chlorides in dehydrated alcohol, stirring is mixed with to obtain gel solution, 1:1 in mass ratio subsequently, mixes 25min by gel solution with the stirring of barium chloride hydrochloric acid mixed solution, is prepared into Barium metatitanate. coagulant liquid；Then the Barium metatitanate. coagulant liquid of above-mentioned preparation is placed at 65 DEG C, rotary evaporated to dryness, it is milled sieve subsequently, being prepared into 350 order gel powders, collect gel powder and be placed under 15MPa, cold pressing 10min, it is prepared into ripple packing structure, after having colded pressing, being placed in 850 DEG C of Muffle furnaces, insulation calcining 2h after annealing processes, controlling annealing rate is 5 DEG C/min, to be annealed complete after, be prepared into ceramic corrugated filler plate, standby；Weigh the deionized water of 19g styrene, 0.5g acrylic acid and 80mL respectively, it is placed in there-necked flask after stirring is mixed, after 35 DEG C of emulsified reaction 10min, it is slowly added dropwise the sodium peroxydisulfate solution that 0.1mL mass concentration is 10%, control time for adding is 10min, after being added dropwise to complete, heating in water bath 3h at 75 DEG C；To be heated complete after, it is filtered and collects filter cake, subsequently by solid-to-liquid ratio 1:5, filter cake is placed in dehydrated alcohol, under 200W, ultrasonic disperse processes 10min, after ultrasonic disperse completes, it is simultaneously added dropwise 2mL tetraethyl orthosilicate and 5mL mass concentration is the ammonia spirit of 10%, control time for adding and be 30min；Finally after being added dropwise to complete, it is placed at 45 DEG C heating in water bath 5h, it is prepared into the resin grout liquid that thick solid content is 18%, naturally dry after subsequently standby ceramic corrugated filler plate ethanol solution being washed 3 times, again ceramic corrugated filler plate is tilted 45 °, resin grout liquid is coated on ceramic corrugated filler plate surface, to be coated complete after, dry 6h at 100 DEG C, can be prepared into a kind of ceramic corrugated filler high wettability coating.The ceramic corrugated filler high wettability coating layer thickness of the present invention is 5mm, and coating density is about 0.9kg/L, and case hardness is 2H, and preparation process is simple, can be effectively improved mass-transfer efficiency and the wettability of ripple packing；This coating stain resistance is strong, and mechanical strength is high, reaches 721MPa, not easy fracture in pressing process.
Example 2
First 1:5 in mass ratio, weigh barium chloride and be placed in the hydrochloric acid solution that mass concentration is 10%, stirring mixing 13min, it is prepared into barium chloride hydrochloric acid mixed solution, then 1:5 in mass ratio, weigh the butyl titanate with molal weights such as barium chlorides in dehydrated alcohol, stirring is mixed with to obtain gel solution, 1:1 in mass ratio subsequently, mixes 28min by gel solution with the stirring of barium chloride hydrochloric acid mixed solution, is prepared into Barium metatitanate. coagulant liquid；Then the Barium metatitanate. coagulant liquid of above-mentioned preparation is placed at 72 DEG C, rotary evaporated to dryness, it is milled sieve subsequently, being prepared into 375 order gel powders, collect gel powder and be placed under 18MPa, cold pressing 13min, it is prepared into ripple packing structure, after having colded pressing, being placed in 875 DEG C of Muffle furnaces, insulation calcining 3h after annealing processes, controlling annealing rate is 5 DEG C/min, to be annealed complete after, be prepared into ceramic corrugated filler plate, standby；Weigh the deionized water of 20g styrene, 0.6g acrylic acid and 83mL respectively, it is placed in there-necked flask after stirring is mixed, after 38 DEG C of emulsified reaction 13min, it is slowly added dropwise the sodium peroxydisulfate solution that 0.2mL mass concentration is 10%, control time for adding is 10min, after being added dropwise to complete, heating in water bath 4h at 78 DEG C；To be heated complete after, it is filtered and collects filter cake, subsequently by solid-to-liquid ratio 1:5, filter cake is placed in dehydrated alcohol, under 250W, ultrasonic disperse processes 13min, after ultrasonic disperse completes, it is simultaneously added dropwise 3mL tetraethyl orthosilicate and 6mL mass concentration is the ammonia spirit of 10%, control time for adding and be 35min；Finally after being added dropwise to complete, it is placed at 48 DEG C heating in water bath 7h, it is prepared into the resin grout liquid that thick solid content is 19%, naturally dry after subsequently standby ceramic corrugated filler plate ethanol solution being washed 4 times, again ceramic corrugated filler plate is tilted 45 °, resin grout liquid is coated on ceramic corrugated filler plate surface, to be coated complete after, dry 7h at 110 DEG C, can be prepared into a kind of ceramic corrugated filler high wettability coating.The ceramic corrugated filler high wettability coating layer thickness of the present invention is 6mm, and coating density is about 1.0kg/L, and case hardness is 3H, and preparation process is simple, can be effectively improved mass-transfer efficiency and the wettability of ripple packing；This coating stain resistance is strong, and mechanical strength is high, reaches 725MPa, not easy fracture in pressing process.
Example 3
First 1:5 in mass ratio, weigh barium chloride and be placed in the hydrochloric acid solution that mass concentration is 10%, stirring mixing 15min, it is prepared into barium chloride hydrochloric acid mixed solution, then 1:5 in mass ratio, weigh the butyl titanate with molal weights such as barium chlorides in dehydrated alcohol, stirring is mixed with to obtain gel solution, 1:1 in mass ratio subsequently, mixes 30min by gel solution with the stirring of barium chloride hydrochloric acid mixed solution, is prepared into Barium metatitanate. coagulant liquid；Then the Barium metatitanate. coagulant liquid of above-mentioned preparation is placed at 80 DEG C, rotary evaporated to dryness, it is milled sieve subsequently, being prepared into 400 order gel powders, collect gel powder and be placed under 20MPa, cold pressing 15min, it is prepared into ripple packing structure, after having colded pressing, being placed in 900 DEG C of Muffle furnaces, insulation calcining 3h after annealing processes, controlling annealing rate is 5 DEG C/min, to be annealed complete after, be prepared into ceramic corrugated filler plate, standby；Weigh the deionized water of 20g styrene, 0.7g acrylic acid and 85mL respectively, it is placed in there-necked flask after stirring is mixed, after 40 DEG C of emulsified reaction 15min, it is slowly added dropwise the sodium peroxydisulfate solution that 0.2mL mass concentration is 10%, control time for adding is 10min, after being added dropwise to complete, heating in water bath 4h at 80 DEG C；To be heated complete after, it is filtered and collects filter cake, subsequently by solid-to-liquid ratio 1:5, filter cake is placed in dehydrated alcohol, under 300W, ultrasonic disperse processes 15min, after ultrasonic disperse completes, it is simultaneously added dropwise 3mL tetraethyl orthosilicate and 6mL mass concentration is the ammonia spirit of 10%, control time for adding and be 40min；Finally after being added dropwise to complete, it is placed at 50 DEG C heating in water bath 8h, it is prepared into the resin grout liquid that thick solid content is 20%, naturally dry after subsequently standby ceramic corrugated filler plate ethanol solution being washed 5 times, again ceramic corrugated filler plate is tilted 45 °, resin grout liquid is coated on ceramic corrugated filler plate surface, to be coated complete after, dry 8h at 120 DEG C, can be prepared into a kind of ceramic corrugated filler high wettability coating.The ceramic corrugated filler high wettability coating layer thickness of the present invention is 7mm, and coating density is about 1.1kg/L, and case hardness is 3H, and preparation process is simple, can be effectively improved mass-transfer efficiency and the wettability of ripple packing；This coating stain resistance is strong, and mechanical strength is high, reaches 730MPa, not easy fracture in pressing process.
Claims (1)
1. the preparation method of a ceramic corrugated filler high wettability coating, it is characterised in that concrete preparation process is:
(1) 1:5 in mass ratio, weigh barium chloride and be placed in the hydrochloric acid solution that mass concentration is 10%, stirring mixing 10～15min, it is prepared into barium chloride hydrochloric acid mixed solution, then 1:5 in mass ratio, weigh the butyl titanate with molal weights such as barium chlorides in dehydrated alcohol, stirring is mixed with to obtain gel solution, 1:1 in mass ratio subsequently, mixes 25～30min by gel solution with the stirring of barium chloride hydrochloric acid mixed solution, is prepared into Barium metatitanate. coagulant liquid；
(2) the Barium metatitanate. coagulant liquid of above-mentioned preparation is placed at 65～80 DEG C, rotary evaporated to dryness, it is milled sieve subsequently, being prepared into 350～400 order gel powders, collect gel powder and be placed under 15～20MPa, cold pressing 10～15min, it is prepared into ripple packing structure, after having colded pressing, being placed in 850～900 DEG C of Muffle furnaces, insulation calcining 2～3h after annealing processes, controlling annealing rate is 5 DEG C/min, to be annealed complete after, be prepared into ceramic corrugated filler plate, standby；
(3) deionized water of 19～20g styrene, 0.5～0.7g acrylic acid and 80～85mL is weighed respectively, it is placed in there-necked flask after stirring is mixed, after 35～40 DEG C of emulsified reaction 10～15min, it is slowly added dropwise the sodium peroxydisulfate solution that 0.1～0.2mL mass concentration is 10%, control time for adding is 10min, after being added dropwise to complete, heating in water bath 3～4h at 75～80 DEG C；
(4) to be heated complete after, it is filtered and collects filter cake, subsequently by solid-to-liquid ratio 1:5, filter cake is placed in dehydrated alcohol, under 200～300W, ultrasonic disperse processes 10～15min, after ultrasonic disperse completes, it is simultaneously added dropwise 2～3mL tetraethyl orthosilicate and 5～6mL mass concentration is the ammonia spirit of 10%, control time for adding and be 30～40min；
(5) after being added dropwise to complete, it is placed at 45～50 DEG C heating in water bath 5～8h, it is prepared into the resin grout liquid that thick solid content is 18～20%, ceramic corrugated filler plate ethanol solution step (2) prepared subsequently dries after washing 3～5 times naturally, again ceramic corrugated filler plate is tilted 45 °, resin grout liquid is coated on ceramic corrugated filler plate surface, to be coated complete after, dry 6～8h at 100～120 DEG C, can be prepared into a kind of ceramic corrugated filler high wettability coating.
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| CN201610144385.8A CN105777195A (en) | 2016-03-15 | 2016-03-15 | Method for preparing high-wettability coated layer on ceramic geometric packing |
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| CN201610144385.8A CN105777195A (en) | 2016-03-15 | 2016-03-15 | Method for preparing high-wettability coated layer on ceramic geometric packing |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107486129A (en) * | 2017-08-31 | 2017-12-19 | 安徽青花坊瓷业股份有限公司 | A kind of ceramic corrugated filler structure of scrubbing tower |
| CN108558390A (en) * | 2018-05-21 | 2018-09-21 | 九江职业技术学院 | A kind of cutter enhancing nano-composite coating and preparation method thereof |
-
2016
- 2016-03-15 CN CN201610144385.8A patent/CN105777195A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107486129A (en) * | 2017-08-31 | 2017-12-19 | 安徽青花坊瓷业股份有限公司 | A kind of ceramic corrugated filler structure of scrubbing tower |
| CN108558390A (en) * | 2018-05-21 | 2018-09-21 | 九江职业技术学院 | A kind of cutter enhancing nano-composite coating and preparation method thereof |
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