CN108950654A - A kind of antibacterial applications of copper sulphate in painting dressing automobiles cathode electrodip painting - Google Patents
A kind of antibacterial applications of copper sulphate in painting dressing automobiles cathode electrodip painting Download PDFInfo
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- CN108950654A CN108950654A CN201811006652.0A CN201811006652A CN108950654A CN 108950654 A CN108950654 A CN 108950654A CN 201811006652 A CN201811006652 A CN 201811006652A CN 108950654 A CN108950654 A CN 108950654A
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D13/00—Electrophoretic coating characterised by the process
- C25D13/22—Servicing or operating apparatus or multistep processes
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D13/00—Electrophoretic coating characterised by the process
- C25D13/20—Pretreatment
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Abstract
The invention discloses a kind of antibacterial applications of copper sulphate in painting dressing automobiles cathode electrodip painting.Using copper-bath in painting dressing automobiles ability cathode electrophoresis lacquer craftwork pure water tank liquor and electrophoresis groove liquid carry out antimicrobial treatment respectively.Technique for applying of the invention is very simple, pure water tank liquor and electrophoresis groove liquid that a certain amount of copper-bath is added in painting dressing automobiles ability cathode electrophoresis lacquer craftwork are directly subjected to antimicrobial treatment, particularly preferred antibacterial effect can be obtained, more importantly, after copper sulphate progress antimicrobial treatment is added, the influence to performance indexess such as electrophoresis groove liquid parameter, workability and film performances is very small, simultaneously, the low dosage of copper sulphate unit price is few, significantly reduces processing cost.
Description
Technical field
The present invention relates to the application of copper sulphate, in particular to antibacterial of a kind of copper sulphate in painting dressing automobiles cathode electrodip painting
Using.
Background technique
Automobile pre-processing electrophoresis lacquer craftwork process are as follows: white body passes through hot water wash, pre- degreasing, degreasing, industrial washing, table
Tune, phosphatization, industrial washing, pure water wash, electrophoresis, ultrafiltration cleaning, pure water are cleaned, drain, toasted.It include anode system in electrophoresis system
System, ultrafiltration system.
The main technique slot that bacterium breeds is pure water washing trough, ultrafiltration rinse bath, anode slot and electrophoresis tank.The reason is that, one
The a small amount of organic resin and solutions of weak acidity for cleaning brought into groove body are all very suitable for bacterial growth；Secondly paint is applied in automobile
It updates in dress technique, it is further improved by the unleaded electrophoretic paint that traditional leaded electrophoretic paint is updated to latest generation
Environmental-protecting performance, but the cathode electrodip painting without heavy metal easily breeds bacterium in coating process production.
The growth of bacterium, which will lead to, accumulates bacterium corpse in tank liquor and groove body, lead to line clogging, filter system jams, electrophoresis
Stability of Bath Solution declines, and having foreign matter to be adhered to surface of the paint film in cleaning process leads to abnormal film.In order to guarantee film and tank liquor
Quality, need to control bacterium and killed.Used anti-microbial agents are mainly hydrogen peroxide, Kathon CG agent, and hydrogen peroxide makes
It is that the sterilization of pure water groove body recycling sterilizing rear groove is added after halt production with method, Kathon CG agent is predominantly added in groove body and keeps one
Determine content and carries out antibacterial.Used disinfection equipment is mainly ultraviolet lamp sterilization, and ultraviolet lamp sterilization equipment is added in the circulatory system,
It is sterilized when recycling tank liquor by ultraviolet lamp tube.
There is the disadvantages of corrosivity is strong, easily decomposes, is high using concentration in use in above-mentioned hydrogen peroxide sterilization；Kathon CG
There is unit price height in agent, be not easy the problems such as storing；That there are equipment unit prices is high, difficult in maintenance for ultraviolet lamp apparatus, bactericidal effect is poor etc. asks
Topic.
Summary of the invention
In order to solve the above technical problem, the present invention provides a kind of antibacterial of copper sulphate in painting dressing automobiles cathode electrodip painting
Using.
The technical solution of the present invention is as follows:
The antibacterial applications of a kind of copper sulphate in painting dressing automobiles cathode electrodip painting, which is characterized in that use copper-bath
To in painting dressing automobiles ability cathode electrophoresis lacquer craftwork pure water tank liquor and electrophoresis groove liquid carry out antimicrobial treatment respectively.
Further, when liquid to be processed be pure water tank liquor when, copper ion concentration be 1.9~4.5mg/Kg, preferably 3.0~
4.5mg/Kg, more preferably 3.0~4.0mg/Kg；The bacterial content of pure water tank liquor is 10-107cfu/ml。
Further, when liquid to be processed be electrophoresis groove liquid when, copper ion concentration be 1.5~4.5mg/Kg, preferably 2.0~
4.0mg/Kg, more preferably 2.5~4.0mg/Kg；The bacterial content of electrophoresis groove liquid is 10-104cfu/ml。
Above-mentioned copper ion concentration is the gross mass of copper ion in solution relative to the total of copper-bath and liquid to be processed
Quality.
Further, copper-bath uses CuSO4·5H2O, which is dissolved in pure water, to be formulated.
Every test method or index are as follows:
(1) method of detecting bacterium:
It is detected using German Shu Mei Bacteria Detection piece, specifically:
(1) sampling method
1. twisting the lid off, takes out and survey bacterium piece, be careful not to touch agar block.
2. detect the circulatory system, bacterium piece will be surveyed and be directly immersed in liquid, or hand-held survey bacterium piece liquid shower.Detect from
When pressing the liquid of injection, it is necessary to notice whether agar block has been stripped survey bacterium piece.If liquid to be checked is contained with container,
Bacterium piece will be surveyed after first thoroughly mixing again to immerse.After surveying bacterium piece immersion liquid, keep further taking out for 5-10 seconds, it is necessary to assure survey bacterium piece two
Face all complete wettings.Highly viscous liquid is detected, the mode being directly immersed in cannot be taken, aseptic cotton carrier sampling can be used, so
The scribing line of bacterium on piece is being surveyed afterwards, liquid is made to spread out to form uniform film.When detection object surface and solid sample, bacterium will be surveyed respectively
Piece two sides is pressed at surface, guarantees to come into full contact with.
It surveys in tube 3. bacterium piece will be surveyed and put back to and tightens lid.Sampling spot and time are put on pipe.
(2) cultural method
Bacterium piece will be surveyed at 27-30 DEG C after culture 24-48 hours, bacterium is in yellow agar face observation bacterial growth situation；Such as
Fruit is cultivated at room temperature, and growing state is generally observed after 2-4 days；Since some bacterial growths are slow, it is proposed that reading result
Confirm again within 48 hours afterwards primary.Saccharomycete and mould observe growth feelings after 27-30 DEG C is cultivated 72 hours, in red agar face
Condition；If cultivated at room temperature, growing state is generally observed after 4-7 days.Bacterium piece will be surveyed to carry out with the subsidiary comparative diagram of product
Compare, to judge that sample by microbial contamination degree, should keep survey bacterium piece to be in sealing state when reading result.
(3) appraisal procedure
The bacterium piece comparative diagram subsidiary with product will be surveyed to be compared, to judge that sample by microbial contamination degree, reads knot
Survey bacterium piece should be kept to be in sealing state when fruit.
(2) bath parameters measurement method:
(1) solid part
Irony disk is placed in balance and is weighed, note weight is m1, takes 4.0000g tank liquor as gross weight is weighed in iron pan, remembers
Gross weight is m2；The iron pan for filling tank liquor is put into take out after 120 DEG C of oven for baking 60min and is put into drying basin, it is cold to sample
But it to after room temperature, is taken out, is weighed with tweezers, note weight is m3.It is measured three times in parallel
As a result it calculates:
As a result the content of solid part, calculating formula are indicated with mass percent are as follows:
The quality of m1----- iron pan
The quality of m2----- iron pan and sample
The quality of sample after the quality and constant weight of m3----- iron pan
Acquired results retain 2 decimals.
(2) ash
Sufficiently stir evenly tank liquor sample, confirmation is precipitated without pigment, is accurately weighed porcelain crucible weight and is accurate to 0.0001g and is denoted as
G0 weighs 10.0000g sample in crucible, and note gross weight is G1；The crucible of the sample weighed up is placed in above-mentioned drying box, in
120 DEG C of ± 2 DEG C of heating are taken out for two hours, and the sample being evaporated is put into muffle furnace, are heated to 850 DEG C, paint sample is forged at 850 DEG C
It burns 30 minutes.Crucible taking-up is placed in drier cooling weighing, is accurate to 1mg, then weighs.It is denoted as G2
It calculates:
Ash content=(G2-G0)/[(G1-G0) S] × 100%
In formula: S: solid part of sample；
G0: claim the weight (g) of sample vessel
G1:G0+ example weight (g)
G2: the weight of G1 after drying.
(3) total acid content (MEQ)
It is defined as amount mmol/100g sour contained by every 100g solid part；
It takes 10 grams of CED tank liquors (being accurate to 0.0001g) to be put into 250ml beaker, about 50ml tetrahydrofuran is added in beaker,
It is sufficiently stirred evenly with electromagnetic agitation；It is titrated with 0.1N NaOH with 0.50ml/ times, PH measurement is carried out after stirring evenly, carry out 20 drops
It is fixed；Surveyed pH value is recorded；Using pH value as ordinate, titration ml does figure for abscissa, the straight line and the song for being 1 with slope
Line is tangent, can with to two tangent lines, the vertical line for doing two tangent lines takes vertical line midpoint to do straight line and the song that a slope is 1
Line intersection ml is titration midpoint corresponding to intersection point.It is denoted as V.
Calculation formula are as follows:
MEQ=100*CNaOH*V/ (M*S)
In formula: S: solid part of sample；
CNaOH: the molar concentration (mol/L) of sodium hydroxide
V: sodium hydroxide solution volume (ml)
M: the quality (g) of sample
(3) tank liquor workability judgment method
(1) voltage film thickness
Anode and thermometer are fixed with iron clamp, are close to inner surface of container.Clean standard phosphatization plate is through on copper rod, and
Copper rod both ends, which are fixed on container top tank liquor, should not have test plate (panel), DC power supply anode be connected simple anode, power cathode connects
Connect copper rod.
The container for putting tank liquor is placed on magnetic stirring apparatus and is stirred；DC power supply is opened, adjusts voltage to relevant voltage V
(electrophoresis time 3min has been set by internal processes)；DC source is automatically closed after swimming plate, and voltage knob is resetted.It will
Electrode is removed, and takes out test plate (panel)；Test plate (panel) is placed on 170 DEG C of * 20min of baking in baking oven.Using film thickness gauge to test plate (panel) diagonal line
Point of intersection is measured film thickness duplicate measurements 5 times and is averaged.
(2) the molten test of weight
Anode and thermometer are fixed with iron clamp, are close to inner surface of container.Clean standard phosphatization plate is through on copper rod, and
Copper rod both ends, which are fixed on container top tank liquor, should not have test plate (panel), DC power supply anode be connected simple anode, power cathode connects
Connect copper rod.
The container for putting tank liquor is placed on magnetic stirring apparatus and is stirred；DC power supply is opened, adjusts voltage to relevant voltage V
(electrophoresis time 3min has been set by internal processes)；DC source is automatically closed after swimming plate, and voltage knob is resetted.It will
Test plate (panel), which takes out, to be rinsed, and submergence half (downside) in tank liquor is placed again into, and keeps taking-up pure water rinsing after 10min, test plate (panel) is put
Set 170 DEG C of * 20min of baking in baking oven.Film thickness duplicate measurements 5 is measured to linea angulata point of intersection of the test plate (panel) to upside using film thickness gauge
It is secondary to be averaged, it is denoted as L1, linea angulata point of intersection of the test plate (panel) to downside is measured film thickness duplicate measurements 5 times using film thickness gauge and is averaged
Value, is denoted as L2.
It calculates:
Molten rate=(L1-L2)/L1 × 100% of weight
In formula: L1: the test plate (panel) film thickness (μm) of normal processes；
L2: the test plate (panel) film thickness (μm) after 10min is impregnated after electrophoresis in tank liquor
(3) settleability
The tank liquor stirred evenly is poured into 50ml graduated cylinder, and sampling and measuring its solid part, be denoted as S1, after placing 48 hours, taken
Supernatant liquor measures solid part, is denoted as S2.
It calculates:
Settleability=(S1-S2)/S1 × 100%
In formula: S1: tank liquor solid part；
S2: solid part after natural subsidence.
(4) L test plate (panel) judges
Standard phosphatization plate is bent from middle line to 90 DEG C, and measures its roughness；Anode and thermometer are fixed with iron clamp,
It is close to inner surface of container.Above-mentioned standard phosphatization plate is through on copper rod, and copper rod both ends are fixed on container top tank liquor not have
Test plate (panel) is crossed, DC power supply anode is connected into simple anode, power cathode connects copper rod.The container for putting tank liquor is placed on magnetic force to stir
It mixes and is stirred on device；It opens DC power supply, adjusts voltage to relevant voltage V (electrophoresis time 3min has been set by internal processes)；
DC source is automatically closed after swimming plate, and voltage knob is resetted；Take out test plate (panel)；Test plate (panel) is placed in baking oven and toasts 170
℃*20min.Roughness and film thickness measuring are carried out to surface of the paint film that is vertical, being parallel to anode respectively and recorded.
(5) breakdown voltage
Anode and thermometer are fixed with iron clamp, are close to inner surface of container.Above-mentioned standard phosphatization plate is through on copper rod, and
Copper rod both ends, which are fixed on container top tank liquor, should not have test plate (panel), DC power supply anode be connected simple anode, power cathode connects
Connect copper rod.The container for putting tank liquor is placed on magnetic stirring apparatus and is stirred；DC power supply is opened, adjusts voltage to relevant voltage V
(electrophoresis time 3min has been set by internal processes)；DC source is automatically closed after swimming plate, and voltage knob is resetted；By
300V starts each electrophoresis it is breakdown to improve test plate (panel) under 10V voltage to a certain voltage to be breakdown voltage.It is denoted as VMAX
(6) four pieces of box throwing powers
1, instrument and material:
Anode plate: (length) 100mm* (width) 50mm；Test panels: intermediate non-aperture cold rolling phosphatization plate, (length) 150mm*
(width) 70mm* (thickness) 0.8mm
Intermediate aperture cold rolling phosphatization plate, (length) 150mm* (width) 70mm* (thickness) 0.8mm.Aperture situation is as shown in Figure 1；
Band magnetic stripe insulation frame: (length) 130mm* (width) 70mm* (height) 20mm, insulating materials are the glass reinforced plastic of 4mm thickness；
Electrophoresis and relevant device: electrophoretic apparatus, water bath with thermostatic control, baking oven, film thickness gauge etc.；It is other: ruler, adhesive waterproof tape etc..
2, four pieces of box production
The production of 1 four pieces of boxes of experiment:
Prepare the breadboard b (1 piece) of the breadboard a (3 pieces) for having intermediate aperture and intermediate non-aperture as shown in Figure 1, system
Make experiment as shown in Figure 2 with four pieces of boxes.
Fig. 2 is intended only as the example of four pieces of boxes production, as long as meeting following item, to experimental plate fixing means, Yi Jiwei
This used material etc. does not have special provision.
(A) by the longitudinal and transverse alignment of experimental plate, sequence is as shown in Figure 3.Distance between plates is all 20mm.
(B) insulators such as the two sides of range shown in Fig. 3 oblique line and bottom surface adhesive tape cover, and make to remove when electrophoretic painting
Coating infiltration is not had outside the aperture of experimental plate.In addition, insulator will select not allowing the readily soluble type into coating.
(C) lap of black position shown in Fig. 2 is 5mm.
(D) each coating surface of experimental plate is set to the face A~face H in order from left to right as shown in Figure 3.
3, electrophoretic painting
The setting for testing four pieces of boxes is placed four pieces of boxes by the condition shown in table 1 that meets, as shown in Figure 4.Each breadboard
(short circuit) is connected with conducting wire etc..
1 BOX of table places condition
| ① | Interpolar is away from high (anode~face A) | 100mm |
| ② | Liquid is deep (impregnating depth of four pieces of boxes) | 90mm |
| ③ | Ultimate ratio (area of anode: the total coating area in the face A~face H) | 1∶8 |
Note: there is the face A in coating hole towards anode
After four pieces of boxes are provided with, coating is powered 3 minutes by defined temperature, voltage.Guarantee that coating exists in galvanization
(it is noted that not blister) is stirred under uniform state.Four pieces of boxes of experiment disintegrate after coatings tank taking-up, will adhere to
Coating on each experimental plate is sufficiently rinsed well with tap water.By the baking of coating defined of the experimental plate after the completion of washing
Temperature is dry.
3, the evaluation method of throwing power:
The measurement of each experimental plate average film thickness evaluates the examination after coating by measuring the coating film thickness of each experimental plate
Test the throwing power (film thickness measuring method) of plate.As shown in Figure 5 × mark measures 4 points of film thickness, acquire 4 points of average value.
4, the calculating (with G/A ratio, % is indicated) of throwing power:
When to test or calculate outside plate film thickness (A plate) be 20um, the film thickness of G plate, calculation formula is as follows:
In formula,
G0: when for A plate film thickness being 20um, four pieces of box G plate film thickness (calculated value), unit (um)
G1: when for voltage being U1, four pieces of box G plate film thickness, unit (um)
G2: when for voltage being U2, four pieces of box G plate film thickness, unit (um)
A1: when for voltage being U1, four pieces of box A plate film thickness, unit (um)
A2: when for voltage being U2, four pieces of box A plate film thickness, unit (um)
Then, by G/A ratio=(G0/20) * 100%, to indicate the throwing power of electrophoretic coating.
(4) electrophoresis test plate (panel) performance judgment test method
(1) adhesive force
Test plate (panel) to be tested is placed left hand in the plane to fix；The right hand holds row's knife and carries out stroke to test plate (panel), needs to mark
Each knife of vertical and horizontal, which is formed, to intersect；Using dedicated brush head to frame go out clear up, with special adhesive tape at frame into
Row, which is pasted, to be pullled；
Result judgement: with the paint film situation at amplification sem observation frame；Without falling off, the adhesive force determined under the precision is 0
Grade.
(2) impact resistance
The height of drop (range 0-50cm) of counterweight is adjusted as needed, and it is clamping fixed to discharge counterweight after selected height；
Counterweight impact head is stuck at counterweight release folder；Test plate (panel) to be tested is placed on Apparatus for Impacting at low-temp test position；Discharge counterweight impact
Head is tested；
Result judgement: whether observation test plate (panel) has peeling paint by front at impact；Without the impact determined under the height that falls off
It is qualified；It falls off then unqualified for the impact under the height.50kg*cm standard used herein detects test plate (panel).
(3) hardness
It using No. H detection pencil, holds pencil and is crossed with the power of 50N to test plate (panel), paint film is without scuffing after wiping pen print
It is qualified to determine.
(4) acid resistance, alkali resistance
It is tested by GB/T1763, under the conditions of 25 DEG C, 0.1N H2SO4 drips on tested template r for 24 hours rustless, crackle, rises
Wrinkle, bubble, peeling, paint film softening etc..
Tested by GB/T1763, template be immersed in 25 ± 1 DEG C, in 0.1N NaOH solution, r is rustless for 24 hours, crackle, corrugation,
Bubble, peeling, paint film softening etc..
(5) water resistance
By ASTM D870-2002 test method, using 50 DEG C of distillation water tests, 240h is rustless, crackle, corrugation, bubble,
The variations such as peeling, paint film softening.
(6) petrol-resistance
It is tested respectively by GMW14333-2009 experimental method A and B and evaluation test, the unleaded no ethyl alcohol commercial gasoline of 93# soaks
Bubble 24 hours, appearance is unchanged.
The beneficial effects of the present invention are:
Technique for applying of the invention is very simple, and a certain amount of copper-bath is directly added to painting dressing automobiles cathode electricity
Pure water tank liquor and electrophoresis groove liquid in swimming lacquer craftwork carry out antimicrobial treatment, can obtain particularly preferred antibacterial effect, prior
It is after copper sulphate progress antimicrobial treatment is added, to performance indexess such as electrophoresis groove liquid parameter, workability and film performances
Influence it is very small, meanwhile, the low dosage of copper sulphate unit price is few, significantly reduces processing cost, and waste water copper content is very low, locates
Reason is simple, without increasing cost of water treatment.
Detailed description of the invention
Fig. 1 is the experimental plate for making throwing power and testing four pieces of boxes.
Fig. 2 is four pieces of boxes of throwing power experiment.
Fig. 3 is the figure that puts in order of each coating surface of experimental plate.
Fig. 4 is the setting schematic diagram for testing four pieces of boxes.
Fig. 5 is the film thickness measuring point schematic diagram of experimental plate, wherein the face the A~face F: 4 points of × mark are test plate (panel) coating parts
The midpoint of 4 line segments of diagonal line；The face G, the face H: 4 points of × mark are the midpoints of test plate (panel) coating part 4 line segments of diagonal line.
Specific embodiment
Below with reference to embodiment, the present invention is further described, but the present invention is not limited thereto.
Referring to Xiang River Northwest coating LZ-800 electrophoretic paint product description, to the detected electrophoretic paint of the present invention and test plate (panel)
Performance whether accord with it is up to standard referred to, as shown in table 2.
2 electrophoretic paint performance standard of table
Embodiment 1
CuSO is weighed with assay balance in 250ml beaker4·5H2O 0.1921g, which enters pure water and is dissolved to 100g, obtains sulfuric acid
Copper solution takes the tank liquor of pure water containing bacterium to be added in 11 beakers with every part of 200g, and number is 1 to No. 11 respectively, to 1 to No. 11 beaker
In be separately added into above-mentioned copper-bath 0,0.16g, 0.28g, 0.40g, 0.52g, 0.76g, 1.00g, 1.20g, 1.40g,
1.60g,1.80g；Be added again into 1 to No. 11 beaker weighed pure water 1.80g, 1.64g, 1.52g, 1.40g, 1.28g,
1.04g,0.80g,0.40g,0.20g,0g；Placed four hours after shaking up, according to Shu Mei Bacteria Detection chip detection method to its into
Row Bacteria Detection.Test result is as shown in table 3.
The test result of 3 embodiment 1 of table
From table 3, it can be seen that Cu between 1.9~2.5mg/kg under a certain concentration2+To bacterial content 107The pure water of cfu/ml
Trough washery liquid begins with antibacterial action；Cu between 3.0~3.5mg/kg under a certain concentration2+To bacterial content 107The pure water of cfu/ml
Trough washery liquid has bactericidal effect.
Embodiment 2
CuSO is weighed with assay balance in 250ml beaker4·5H2O 0.1921g, which enters pure water and is dissolved to 100g, obtains sulfuric acid
Copper solution takes the tank liquor 200g of pure water containing bacterium that beaker is added, the above-mentioned copper-bath of weighed 1.60g is added, to placement after shaking up
0, the sample of 60min, 120min, 240min, 480min carry out Bacteria Detection to it according to Shu Mei Bacteria Detection chip detection method.
The test result of 4 embodiment 2 of table
From table 4, it can be seen that Cu under 4.0mg/kg concentration2+To bacterial content 107The pure water trough washery liquid of cfu/ml exists
It can be sterilized after 120min.
Embodiment 3
CuSO is weighed with assay balance in 250ml beaker4·5H2O 0.1921g, which enters pure water and is dissolved to 100g, obtains sulfuric acid
Copper solution is taken the tank liquor of pure water containing bacterium to be added in two beakers with every part of 200g, weighed 1.52g pure water is added in a beaker,
The weighed above-mentioned copper-bath of 1.52g in another beaker.Stir evenly the conductivity and pH value for measuring 1, No. 2 sample respectively.
The test result of 5 embodiment 3 of table
From table 5, it can be seen that Cu under 4.0mg/kg concentration2+Tank liquor PH can be made to decline 0.2, conductivity increases 16.2 μ s/
cm。
Embodiment 4
CuSO is weighed with assay balance in 250ml beaker4·5H2O 0.1921g, which enters pure water and is dissolved to 100g, obtains sulfuric acid
Copper solution takes electrophoresis groove liquid containing bacterium to be added in 5 beakers with every part of 200g, and number is 1 to 5 respectively, divides into 1 to No. 5 beaker
Above-mentioned copper-bath 0,0.6g, 1.0g, 1.4g, 1.8g are not added；Weighed pure water is separately added into 1 to No. 5 beaker again
1.8g,1.2g,0.8g,0.4g,0g；It places four hours after shaking up, it is carried out carefully according to Shu Mei Bacteria Detection chip detection method
Bacterial examination is surveyed.
The test result of 6 embodiment 4 of table
From table 6, it can be seen that Cu under 1.5mg/kg concentration2+To bacterial content 104The electrophoresis groove liquid of cfu/ml is begun with
Antibacterial action；Cu between 1.5~2.5mg/kg under a certain concentration2+To bacterial content 104The electrophoresis groove liquid of cfu/ml has sterilization to make
With.
Embodiment 5
CuSO is weighed with assay balance in 250ml beaker4·5H2O 0.1921g, which enters pure water and is dissolved to 100g, obtains sulfuric acid
Copper solution, take the 200g of electrophoresis groove liquid containing bacterium be added beaker, the above-mentioned copper-bath of weighed 1.0g is added, after shaking up to place 0,
The sample of 60min, 120min, 240min, 480min carry out Bacteria Detection to it according to Shu Mei Bacteria Detection chip detection method.
The test result of 7 embodiment 5 of table
From table 7, it can be seen that Cu under 2.5mg/kg concentration2+To bacterial content 104The electrophoresis groove liquid of cfu/ml exists
It can be sterilized after 120min.
Embodiment 6
CuSO is weighed with assay balance in 250ml beaker4·5H2O 0.1921g, which enters pure water and is dissolved to 100g, obtains sulfuric acid
Copper solution takes SAIC-GM-Wuling Chongqing base electrophoresis tank tank liquor 10kg, and 5kg is respectively taken to pour into two self-control laboratory plastics respectively
It in container, is stirred using magnetic agitation, number 1,2.Above-mentioned copper-bath 40.0g, No. 1 slot are added into No. 2 slots
Middle addition pure water 40.0g.It is separately sampled that tank liquor solid part, ash, MEQ, PH, conductivity are measured.
The test result of 8 embodiment 6 of table
From table 8, it can be seen that Cu2+Content 4.0mg/kg tank liquor and former bath parameters are substantially suitable, conductivity and MEQ, consolidate
Body part, ash, pH value slightly decrease.All in normal parameters.So may determine that in Cu2+To slot when content 4.0mg/kg
Liquid parameter is substantially without influence.
Embodiment 7
CuSO is weighed with assay balance in 250ml beaker4·5H2O 0.1921g, which enters pure water and is dissolved to 100g, obtains sulfuric acid
Copper solution takes SAIC-GM-Wuling Chongqing base electrophoresis tank tank liquor 10kg, and 5kg is respectively taken to pour into two self-control laboratory plastics respectively
It in container, is stirred using magnetic agitation, number 1,2.Above-mentioned copper-bath 40.0g, No. 1 slot are added into No. 2 slots
Middle addition pure water 40.0g.It is separately sampled to carry out that voltage film thickness, breakdown voltage, weight be molten, settleability, L test plate (panel), four pieces of boxes to tank liquor
Detection project studied.
9 voltage film thickness of table
10 4 pieces of box throwing powers of table
11 L test plate (panel) effect of table (construction voltage 250V)
12 sundry item of table
From table 9~12, it can be seen that Cu2+Content 4.0mg/kg tank liquor workability and former tank liquor are substantially suitable, and locate
In in normal range (NR), it is possible to judge in Cu2+On tank liquor workability substantially without influence when content 4.0mg/kg.
Embodiment 8
CuSO is weighed with assay balance in 250ml beaker4·5H2O 0.1921g, which enters pure water and is dissolved to 100g, obtains sulfuric acid
Copper solution takes SAIC-GM-Wuling Chongqing base electrophoresis tank tank liquor 10kg, and 5kg is respectively taken to pour into two self-control laboratory plastics respectively
It in container, is stirred using magnetic agitation, number 1,2.Above-mentioned copper-bath 40.0g, No. 1 slot are added into No. 2 slots
Middle addition pure water 40.0g.It is being swum in 1, No. 2 tank liquor using 250V DC voltage respectively using standard phosphatization test plate (panel) is several
Plate, 170 DEG C of baking 20min take out in an oven after the completion of making sheet, spare after placing one day in drying basin.Respectively to test plate (panel) into
The different film performance detections of row.
The test result of 13 embodiment 8 of table
From table 13, it can be seen that Cu2+Content 4.0mg/kg tank liquor and former tank liquor film performance are substantially quite qualified, so
It may determine that in Cu2+On film performance substantially without influence when content 4.0mg/kg.
Claims (4)
1. a kind of antibacterial applications of copper sulphate in painting dressing automobiles cathode electrodip painting, which is characterized in that use copper-bath pair
Pure water tank liquor and electrophoresis groove liquid in painting dressing automobiles ability cathode electrophoresis lacquer craftwork carry out antimicrobial treatment respectively.
2. antibacterial applications of the copper sulphate according to claim 1 in painting dressing automobiles cathode electrodip painting, which is characterized in that when
When liquid to be processed is pure water tank liquor, copper ion concentration is 1.9~4.5mg/Kg；The bacterial content of pure water tank liquor is 10-107cfu/
ml。
3. antibacterial applications of the copper sulphate according to claim 1 in painting dressing automobiles cathode electrodip painting, which is characterized in that when
When liquid to be processed is electrophoresis groove liquid, copper ion concentration is 1.5~4.5mg/Kg；The bacterial content of electrophoresis groove liquid is 10-104cfu/
ml。
4. antibacterial applications of the copper sulphate according to claim 1 in painting dressing automobiles cathode electrodip painting, which is characterized in that sulphur
Sour copper solution uses CuSO4·5H2O, which is dissolved in pure water, to be formulated.
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| JPH11209895A (en) * | 1998-01-26 | 1999-08-03 | Sumitomo Light Metal Ind Ltd | Metallic product excellent in antibacterial property and its production |
| CN1432533A (en) * | 2002-01-16 | 2003-07-30 | 陈丹 | Algae killing and inhibiting method for water body |
| CN101637680A (en) * | 2008-07-30 | 2010-02-03 | 中国科学院金属研究所 | Antiseptic filtering metal material by plating Cu and CeO2 on surface of copper wire mesh, and preparation and application thereof |
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