CN106057610B - A kind of powder-coating method of straight tube fluorescent tube - Google Patents

A kind of powder-coating method of straight tube fluorescent tube Download PDF

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Publication number
CN106057610B
CN106057610B CN201610491436.4A CN201610491436A CN106057610B CN 106057610 B CN106057610 B CN 106057610B CN 201610491436 A CN201610491436 A CN 201610491436A CN 106057610 B CN106057610 B CN 106057610B
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China
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powder
slurry
straight tube
tube
dusting
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CN106057610A (en
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刘珍菊
何复道
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SANYOU ELECTRONICS CO Ltd JIANGSHAN ZHEJIANG
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SANYOU ELECTRONICS CO Ltd JIANGSHAN ZHEJIANG
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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01JELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J9/00Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
    • H01J9/20Manufacture of screens on or from which an image or pattern is formed, picked up, converted or stored; Applying coatings to the vessel
    • H01J9/22Applying luminescent coatings

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Formation Of Various Coating Films On Cathode Ray Tubes And Lamps (AREA)

Abstract

The present invention relates to tube cell preparing technical field, a kind of powder-coating method of straight tube fluorescent tube is disclosed, including:A, with powder:Weigh resin glue dilution, triethylene glycol divinyl ether, double [2 (methacryloxy) ethyoxyl] dimethylsilanes, isopropyl thioxanthone, levelling agent, dispersant solution, hydrophilizing agent, defoamer, ethanol, water and water-soluble spread powder;After each raw material is mixed, filter cloth obtains slurry, regulation slurry proportion and viscosity, stirs evenly rear stand for standby use;B, dusting:Dusting is carried out to straight tube glass tube;Semi-finished product are made after dusting;C, inspection:Light transmittance inspection is carried out to semi-finished product;D, baking:Choose and examine qualified semi-finished product, finished product after baking.The powder-coating method slurry hardening time of the present invention is short, and operating efficiency is high;Straight tube tube cell made from the inventive method, the caliper uniformity of bisque is good, and each position light transmittance of tube cell is essentially identical.It is difficult for drop-off and the conjugation of bisque and glass tube is good.

Description

A kind of powder-coating method of straight tube fluorescent tube
Technical field
The present invention relates to tube cell preparing technical field, more particularly to a kind of efficient powder-coating method of straight tube fluorescent tube.
Background technology
The tube cell of LED is in preparation process, it is necessary to carry out dusting to the inwall of glass tube, the quality of dusting is directly affected To the translucent effect of fluorescent tube.Current coating process, is usually to be poured into slurry from the upper end of glass tube with pump, makes slurry by weight Power is left, and is flowed out from the lower end of glass tube, after then toasting, and one layer of bisque is thus formed on glass inside pipe wall.
Chinese patent such as Application No. 200910182998.0 discloses a kind of powder coating method of fluorescent lamp tube, including following Step:(1) washed bright pipe is put on starching machine, is blown into hot blast and dries bright pipe;(2) when bright pipe advances to upper powder position When, spraying pump pipette tips are inserted to one end mouth of pipe of fluorescent tube, starts pump and carries out the slurry that dusts, when slurry is sprayed onto at the top of fluorescent tube, are stopped Dust slurry, and removes lance head;(3) pipette tips of air draught pump are inserted to the other end mouth of pipe of fluorescent tube, starts air draught pumping wind, works as powder When slurry is flowed at the mouth of pipe, then stop air draught, and remove air draught pipette tips;(4) tube cell is dried into drying area.
The powder-coating method of above-mentioned technical proposal, slurry can not rapid curing, hardening time is longer, therefore whole coating process Working effect it is not high enough.
In addition, after the dusting of above-mentioned technical proposal, it is not equal enough in the powder layer thickness of glass inside pipe wall formation after slurry solidification One, cause the light transmittance at each position of tube cell different, cause of low quality.
The content of the invention
In order to solve the above-mentioned technical problem, the invention provides a kind of efficient powder-coating method of straight tube fluorescent tube.The present invention's Slurry hardening time is short in powder-coating method, and operating efficiency is high;Straight tube tube cell made from the inventive method, the caliper uniformity of bisque Good, each position light transmittance of tube cell is essentially identical.It is difficult for drop-off and the conjugation of bisque and glass tube is good.
The present invention concrete technical scheme be:A kind of efficient powder-coating method of straight tube fluorescent tube, comprises the following steps:
A, with powder:The raw material of volumes below part is weighed respectively:550-650 parts of resin glue dilutions, 10-30 parts of triethylene glycols Divinyl ether, 10-20 parts of double [2- (methacryloxy) ethyoxyl] dimethylsilane, 0.5-1.5 parts of isopropyl thioxanthones Anthrone, 1-2 part levelling agent, 35-45 parts of dispersant solutions, 35-45 parts of hydrophilizing agents, 2-3 parts of defoamers, 100-200 parts of ethanol, 600-700 parts of water;Weigh the water-soluble spread powder with the resin glue liquid-solid ratio 600mL/1kg;Above-mentioned each raw material is mixed Afterwards, 250-350 mesh filter clothes are crossed, slurry is obtained, adds water and slurry proportion is adjusted to 1.32-1.34g/cm3, measured with 4 glasss of viscosity are applied Viscosity is determined for 18-20 seconds, 40-60h is stood after stirring standby.
In the slurry that the present invention matches somebody with somebody, quick-setting light-cured components can be realized containing triethylene glycol divinyl ether, Rapid curing can be realized during dusting, dusting efficiency is greatly improved.But above-mentioned photocuring material is oily matter, with Other aqueous materials compatibilities are poor, to overcome this shortcoming, and the present invention is with having selected ethanol as solvent composition and selection Double [2- (methacryloxy) ethyoxyl] dimethylsilanes can reduce oily matter viscosity as diluent, improve two Phase compatibility, meanwhile, double [2- (methacryloxy) ethyoxyl] dimethylsilanes itself also have the effect of photocuring, one Two are lifted to obtain.Pass through the burden control to each raw material, slurry good dispersion produced by the present invention, no large particulate matter, in dusting Mobility, film-forming are moderate in journey, and thickness is homogeneous after solidification, and light transmittance is more average.
B, dusting:Straight tube glass tube is vertically loaded into powder coating machine, in the slurry bucket that slurry is loaded into powder coating machine, from straight tube glass Slurry is poured at the upper end of pipe, dusting is carried out to its inwall;Ultraviolet lighting is carried out to straight tube glass inside pipe wall during dusting Penetrate, make photocuring active material rapid curing, be blowed simultaneously, blowing temperature is 25-75 DEG C;Semi-finished product are made after dusting.
C, inspection:Position each to semi-finished product carries out light transmittance inspection, it is desirable to which light transmittance is controlled in 86-88%.
D, baking:Choose and examine qualified semi-finished product, 8-12min, finished product are toasted at 110-130 DEG C.In baking During, glass tube is not contacted directly directly with calandria.
Preferably, the order of addition of each raw material is in step a:Water and ethanol are configured to mixed solution, by dispersant Solution is added in mixed solution;Then water-soluble spread powder is added, 40-80min is stirred;Continue to add resin glue dilution Liquid, stirs 20-40min;Then surplus stock is added, 10-14h is stirred.
Preferably, the resin glue dilution by S-3501 types water-based acrylic resin and water in equal volume dilution and Into;The levelling agent is levelling agent 420;The dispersant solution is 8-12wt% FD-40 dispersant solutions;The water solubility The model S-833 of spread powder;The hydrophilizing agent is 10wt% N-80 hydrophilizing agents;The defoamer is P-76 defoamers.
Preferably, also including naphthalene of the relative molecular mass in 3000-5000 of 4-8 parts by volume in the raw material of the slurry Sulfonic acid and formaldehyde condensation product sodium salt, and sulfonation degree is more than 80%.For further improve slurry can and stability, in slurry Middle addition naphthalenesulfonateformaldehyde formaldehyde condensation product sodium salt, it is to avoid split-phase, accumulation sedimentation occur after preparing in slurry.In addition, naphthalene sulphur Sour formaldehyde condensation products sodium salt can also avoid bubble during the dusting of slurry.
Preferably, also including the focus ratio of 8-12 parts by volume in the raw material of the slurry;The focus ratio Relative molecular mass in 8-12 ten thousand, solid content is 40-50wt%.Focus ratio is thermosetting resin, can improve slurry with The tack of glass inside pipe wall, makes slurry difficult for drop-off after solidifying;And focus ratio heat-resisting quantity is preferably, it can prevent solid The bisque of change is heated and come off under long-time illumination.Focus ratio be able to can also be made by oneself with purchased in market.
Preferably, in step b dustings, straight tube glass tube is done on powder coating machine on the circular motion of individual pen, powder coating machine It is divided into 1-5 areas by straight tube glass tube movement locus, wherein 1st area blowing speed is 1-3m/s, 50-70 DEG C of temperature of drying;Dry in 2nd area Speed is 1-3m/s, 55-75 DEG C of temperature of drying;3rd area blowing speed is 3-5m/s, 25-45 DEG C of temperature of drying;4th area blowing speed For 4-6m/s, 25-45 DEG C of temperature of drying;5th area blowing speed is 4-6m/s, 40-60 DEG C of temperature of drying.Region is carried out to powder coating machine Divide, according to slurry in the curing degree of glass inside pipe wall, the blowing speed and blowing temperature of regional, energy are set respectively Enough ensure that thickness of the slurry at each position of glass inside pipe wall is essentially identical.
Preferably, rotating speed of the straight tube glass tube on powder coating machine is 900-960 branch/h.With rotating speed in the prior art 1300-1500 branch/h rotating speed is compared, and dusting efficiency of the invention is obviously improved.
Preferably, during dusting, slurry is recycles, and slurry is collected weight after the outflow of straight tube glass tube Newly input in the slurry bucket;The charging aperture and grout outlet of slurry bucket are provided with the filter cloth of 150-250 mesh.Circulation profit is carried out to slurry With cost-effective.Filter cloth is set to the charging aperture and grout outlet of slurry bucket, the glass tube being mixed into during dusting can be filtered out The impurity such as slag.
Preferably, during dusting, dusting is carried out to position below the upper end mouth of pipe of straight tube glass tube;When straight tube glass When glass pipe reaches 4 zone position of powder coating machine, ultrasonic wave cleaning is carried out to the lower end mouth of pipe of straight tube glass tube, slurry is washed away.Due to The two ends mouth of pipe of glass tube is finally to need to assemble, therefore can not have slurry at the mouth of pipe of two ends, in coating, directly to glass Position below the mouth of pipe of pipe upper end carries out coating, it is ensured that the upper end mouth of pipe is without slurry;Using ultrasonic wave cleaning to lower end during special powder The mouth of pipe is cleaned, and washes away slurry.The zone position of powder coating machine 4 cleaning, reason be it is substantially stationary in the position slurry, no longer Flow, will not occur to drip slurry situation.Cleaned using ultrasonic wave, not only cleaning efficiency is high, and will not pollute slurry, makes it It can recycle.
Preferably, during dusting, the slurry in the slurry bucket is in vacuum environment.Because slurry is circulation profit , air easily is mixed into cyclic process, so as to produce bubble, is conducive to the row of the air in slurry under vacuum environment Go out.
It is compared with the prior art, the beneficial effects of the invention are as follows:Slurry hardening time is short in the powder-coating method of the present invention, work Make efficiency high;Straight tube tube cell made from the inventive method, the caliper uniformity of bisque is good, each basic phase of position light transmittance of tube cell Together.It is difficult for drop-off and the conjugation of bisque and glass tube is good.
Embodiment
With reference to embodiment, the invention will be further described.
Embodiment 1
A kind of efficient powder-coating method of straight tube fluorescent tube, comprises the following steps:
A, with powder:Following raw material is weighed respectively:600mL resin glues dilution, 20mL triethylene glycol divinyl ethers, 15mL Double [2- (methacryloxy) ethyoxyl] dimethylsilanes, 1mL isopropyl thioxanthones, 1.5mL levelling agents 420,40mL 10wt% FD-40 dispersant solutions, 40mL 10wt% N-80 hydrophilizing agents, 2.5mL P-76 defoamers, 150mL ethanol, 650mL water;Weigh the water-soluble spread powders of S-833 with the resin glue liquid-solid ratio 600mL/1kg.The resin glue dilution By S-3501 types water-based acrylic resin, dilution is formed liquid in equal volume with water.
Water and ethanol are configured to mixed solution, dispersant solution is added in mixed solution;Stir 60min;Continue Resin glue dilution is added, 30min is stirred;Then surplus stock is added, 12h is stirred.After above-mentioned each raw material is mixed, mistake 300 mesh filter clothes, obtain slurry, add water slurry proportion being adjusted to 1.32-1.34g/cm3, it is with 4 glasss of viscosimeters measure viscosity are applied 18-20 seconds, 50h is stood after stirring standby.
B, dusting:Straight tube glass tube is vertically loaded into powder coating machine, in the slurry bucket that slurry is loaded into powder coating machine, in the slurry bucket Slurry be in vacuum environment under.Slurry is poured at the upper end of straight tube glass tube, to the upper end mouth of pipe of straight tube glass tube with Lower position carries out dusting;Straight tube glass tube does the circular motion of individual pen on powder coating machine, in straight tube glass tube during dusting Wall carries out ultraviolet light, is blowed simultaneously, and semi-finished product are made after dusting.
Wherein, it is divided into 1-5 areas by straight tube glass tube movement locus on powder coating machine,
Wherein 1st area blowing speed is 2m/s, temperature 60 C of drying;2nd area blowing speed is 2m/s, temperature 60 C of drying;3rd area Blowing speed is 4m/s, 35 DEG C of temperature of drying;4th area blowing speed is 5m/s, 35 DEG C of temperature of drying;5th area blowing speed is 5m/s, Blowing temperature 50 C.Rotating speed of the straight tube glass tube on powder coating machine is 930/h.When straight tube glass tube reaches 4th area of powder coating machine During position, ultrasonic wave cleaning is carried out to the lower end mouth of pipe of straight tube glass tube, slurry is washed away.
In addition, during dusting, slurry is recycles, and slurry is collected again defeated after the outflow of straight tube glass tube Enter in the slurry bucket;The charging aperture and grout outlet of slurry bucket are provided with the filter cloth of 200 mesh.
C, inspection:Position each to semi-finished product carries out light transmittance inspection, it is desirable to which light transmittance is controlled in 86-88%.
D, baking:Choose and examine qualified semi-finished product, 10min, finished product are toasted at 120 DEG C.
Embodiment 2
A kind of efficient powder-coating method of straight tube fluorescent tube, comprises the following steps:
A, with powder:Following raw material is weighed respectively:550mL resin glues dilution, 10mL triethylene glycol divinyl ethers, 10mL Double [2- (methacryloxy) ethyoxyl] dimethylsilanes, 0.5mL isopropyl thioxanthones, 1mL levelling agents 420,35mL 12wt% FD-40 dispersant solutions, 35mL 10wt% N-80 hydrophilizing agents, 2mL P-76 defoamers, 100mL ethanol, 600mL Water;Weigh the water-soluble spread powders of S-833 with the resin glue liquid-solid ratio 600mL/1kg.The resin glue dilution by Dilution is formed S-3501 types water-based acrylic resin in equal volume with water.
Water and ethanol are configured to mixed solution, dispersant solution is added in mixed solution;Stir 40min;Continue Resin glue dilution is added, 20min is stirred;Then surplus stock is added, 14h is stirred.After above-mentioned each raw material is mixed, mistake 250 mesh filter clothes, obtain slurry, add water slurry proportion being adjusted to 1.32-1.34g/cm3, it is with 4 glasss of viscosimeters measure viscosity are applied 18-20 seconds, 40h is stood after stirring standby.
B, dusting:Straight tube glass tube is vertically loaded into powder coating machine, in the slurry bucket that slurry is loaded into powder coating machine, in the slurry bucket Slurry be in vacuum environment under.Slurry is poured at the upper end of straight tube glass tube, to the upper end mouth of pipe of straight tube glass tube with Lower position carries out dusting;Straight tube glass tube does the circular motion of individual pen on powder coating machine, in straight tube glass tube during dusting Wall carries out ultraviolet light, is blowed simultaneously, and semi-finished product are made after dusting.
Wherein, it is divided into 1-5 areas by straight tube glass tube movement locus on powder coating machine, wherein 1st area blowing speed is 1m/s, blowing Temperature 50 C;2nd area blowing speed is 1m/s, 55 DEG C of temperature of drying;3rd area blowing speed is 3m/s, 25 DEG C of temperature of drying;4th area blow Airspeed is 4m/s, 25 DEG C of temperature of drying;5th area blowing speed is 4m/s, 40 DEG C of temperature of drying.Straight tube glass tube is on powder coating machine Rotating speed be 900/h.When straight tube glass tube reaches 4 zone position of powder coating machine, the lower end mouth of pipe of straight tube glass tube is carried out Ultrasonic wave is cleaned, and washes away slurry.
In addition, during dusting, slurry is recycles, and slurry is collected again defeated after the outflow of straight tube glass tube Enter in the slurry bucket;The charging aperture and grout outlet of slurry bucket are provided with the filter cloth of 150 mesh.
C, inspection:Position each to semi-finished product carries out light transmittance inspection, it is desirable to which light transmittance is controlled in 86-88%.
D, baking:Choose and examine qualified semi-finished product, 12min, finished product are toasted at 110 DEG C.
Embodiment 3
A kind of efficient powder-coating method of straight tube fluorescent tube, comprises the following steps:
A, with powder:Following raw material is weighed respectively:650mL resin glues dilution, 30mL triethylene glycol divinyl ethers, Double [2- (methacryloxy) ethyoxyl] dimethylsilanes of 20mL, 1.5mL isopropyl thioxanthones, 2mL levelling agents 420, 45mL 8wt% FD-40 dispersant solutions, 45mL 10wt% N-80 hydrophilizing agents, 3mL P-76 defoamers, the relative of 8mL are divided Protonatomic mass is in naphthalenesulfonateformaldehyde formaldehyde condensation product sodium salt more than 80% of 3000-5000, sulfonation degree, 12 mL solid content The focus ratio, 200mL ethanol, 700mL water of 40wt%, relative molecular mass in 8-12 ten thousand;Weigh and the resin glue aqueous Gu the water-soluble spread powders of S-833 than 600mL/1kg.The resin glue dilution by S-3501 types water-based acrylic resin with Dilution is formed water in equal volume.
The preparation method of focus ratio is:By quality than bisphenol A type epoxy resin, bis-phenol base under atmosphere of inert gases Propane, which is added in reaction vessel, to be well mixed, and bisphenol A type epoxy resin and the total matter of bis-phenol base propane are added into reaction vessel The methyl phenyl ethers anisole of amount 20%, is warming up to material dissolution.Wherein, the epoxy radicals in bisphenol A type epoxy resin and phenol hydroxyl in bis-phenol base propane The mol ratio of base is 1.05:1.Urging for bisphenol A type epoxy resin and bis-phenol base propane gross mass 0.15% is added into reaction vessel Agent, reaction temperature is 160 DEG C, and the reaction time is 24h.When reaction proceeds to 20h, material gross mass in addition reaction vessel 50% butanone, reaction naturally cools to 70 DEG C after terminating, and filtering is carried out after discharging focus ratio is made.
Water and ethanol are configured to mixed solution, dispersant solution is added in mixed solution;Stir 80min;Continue Resin glue dilution is added, 40min is stirred;Then surplus stock is added, 10h is stirred.After above-mentioned each raw material is mixed, mistake 350 mesh filter clothes, obtain slurry, add water slurry proportion being adjusted to 1.32-1.34g/cm3, it is with 4 glasss of viscosimeters measure viscosity are applied 18-20 seconds, 60h is stood after stirring standby.
B, dusting:Straight tube glass tube is vertically loaded into powder coating machine, in the slurry bucket that slurry is loaded into powder coating machine, in the slurry bucket Slurry be in vacuum environment under.Slurry is poured at the upper end of straight tube glass tube, to the upper end mouth of pipe of straight tube glass tube with Lower position carries out dusting;Straight tube glass tube does the circular motion of individual pen on powder coating machine, in straight tube glass tube during dusting Wall carries out ultraviolet light, is blowed simultaneously, and semi-finished product are made after dusting.
Wherein, it is divided into 1-5 areas by straight tube glass tube movement locus on powder coating machine, wherein 1st area blowing speed is 3m/s, blowing Temperature 70 C;2nd area blowing speed is 3m/s, 75 DEG C of temperature of drying;3rd area blowing speed is 5m/s, temperature 45 C of drying;4th area blow Airspeed is 6m/s, temperature 45 C of drying;5th area blowing speed is 6m/s, temperature 60 C of drying.Straight tube glass tube is on powder coating machine Rotating speed be 960/h.When straight tube glass tube reaches 4 zone position of powder coating machine, the lower end mouth of pipe of straight tube glass tube is carried out Ultrasonic wave is cleaned, and washes away slurry.
In addition, during dusting, slurry is recycles, and slurry is collected again defeated after the outflow of straight tube glass tube Enter in the slurry bucket;The charging aperture and grout outlet of slurry bucket are provided with the filter cloth of 250 mesh.
C, inspection:Position each to semi-finished product carries out light transmittance inspection, it is desirable to which light transmittance is controlled in 86-88%.
D, baking:Choose and examine qualified semi-finished product, 8min, finished product are toasted at 130 DEG C.
Embodiment 4
A kind of efficient powder-coating method of straight tube fluorescent tube, comprises the following steps:
A, with powder:Following raw material is weighed respectively:600mL resin glues dilution, 15mL triethylene glycol divinyl ethers, 12mL Double [2- (methacryloxy) ethyoxyl] dimethylsilanes, 0.5mL isopropyl thioxanthones, 1.5mL levelling agents 420, 40mL 9wt% FD-40 dispersant solutions, 40mL 10wt% N-80 hydrophilizing agents, 2.5mL P-76 defoamers, 6mL it is relative Molecular mass is in naphthalenesulfonateformaldehyde formaldehyde condensation product sodium salt more than 80% of 3000-5000, sulfonation degree, 10mL solid content Focus ratio, the 150mL ethanol of 45wt%, relative molecular mass in 8-12 ten thousand.600mL water;Weigh and the resin glue aqueous Gu the water-soluble spread powders of S-833 than 600mL/1kg.The resin glue dilution by S-3501 types water-based acrylic resin with Dilution is formed water in equal volume.
Water and ethanol are configured to mixed solution, dispersant solution is added in mixed solution;Stir 50min;Continue Resin glue dilution is added, 25min is stirred;Then surplus stock is added, 11h is stirred.After above-mentioned each raw material is mixed, mistake 300 mesh filter clothes, obtain slurry, add water slurry proportion being adjusted to 1.32-1.34g/cm3, it is with 4 glasss of viscosimeters measure viscosity are applied 18-20 seconds, 55h is stood after stirring standby.
B, dusting:Straight tube glass tube is vertically loaded into powder coating machine, in the slurry bucket that slurry is loaded into powder coating machine, in the slurry bucket Slurry be in vacuum environment under.Slurry is poured at the upper end of straight tube glass tube, to the upper end mouth of pipe of straight tube glass tube with Lower position carries out dusting;Straight tube glass tube does the circular motion of individual pen on powder coating machine, in straight tube glass tube during dusting Wall carries out ultraviolet light, is blowed simultaneously, and semi-finished product are made after dusting.
Wherein, it is divided into 1-5 areas by straight tube glass tube movement locus on powder coating machine, wherein 1st area blowing speed is 1.5m/s, blows 55 DEG C of air temperature;2nd area blowing speed is 1.5m/s, temperature 60 C of drying;3rd area blowing speed is 3.5m/s, 30 DEG C of temperature of drying; 4th area blowing speed is 4.5m/s, 30 DEG C of temperature of drying;5th area blowing speed is 4.5m/s, temperature 45 C of drying.Straight tube glass tube Rotating speed on powder coating machine is 950/h.When straight tube glass tube reaches 4 zone position of powder coating machine, under straight tube glass tube End pipe mouthful carries out ultrasonic wave cleaning, washes away slurry.
In addition, during dusting, slurry is recycles, and slurry is collected again defeated after the outflow of straight tube glass tube Enter in the slurry bucket;The charging aperture and grout outlet of slurry bucket are provided with the filter cloth of 200 mesh.
C, inspection:Position each to semi-finished product carries out light transmittance inspection, it is desirable to which light transmittance is controlled in 86-88%.
D, baking:Choose and examine qualified semi-finished product, 9min, finished product are toasted at 115 DEG C.
Embodiment 5
A kind of efficient powder-coating method of straight tube fluorescent tube, comprises the following steps:
A, with powder:Following raw material is weighed respectively:550mL resin glues dilution, 25mL triethylene glycol divinyl ethers, 16mL Double [2- (methacryloxy) ethyoxyl] dimethylsilanes, 1mL isopropyl thioxanthones, 2mL levelling agents 420,40mL 11wt% FD-40 dispersant solutions, 40mL 10wt% N-80 hydrophilizing agents, 2mL P-76 defoamers, 4mL average molecular matter The solid content measured in naphthalenesulfonateformaldehyde formaldehyde condensation product sodium salt more than 80% of 3000-5000, sulfonation degree, 8mL is 50wt%, relative Focus ratio, 150mL ethanol, 650mL water of the molecular mass in 8-12 ten thousand;Weigh and the resin glue liquid-solid ratio 600mL/ The water-soluble spread powders of 1kg S-833.The resin glue dilution is dilute in equal volume with water by S-3501 types water-based acrylic resin Release and form.
Water and ethanol are configured to mixed solution, dispersant solution is added in mixed solution;Stir 65min;Continue Resin glue dilution is added, 35min is stirred;Then surplus stock is added, 13h is stirred.After above-mentioned each raw material is mixed, mistake 300 mesh filter clothes, obtain slurry, add water slurry proportion being adjusted to 1.32-1.34g/cm3, it is with 4 glasss of viscosimeters measure viscosity are applied 18-20 seconds, 55h is stood after stirring standby.
B, dusting:Straight tube glass tube is vertically loaded into powder coating machine, in the slurry bucket that slurry is loaded into powder coating machine, in the slurry bucket Slurry be in vacuum environment under.Slurry is poured at the upper end of straight tube glass tube, to the upper end mouth of pipe of straight tube glass tube with Lower position carries out dusting;Straight tube glass tube does the circular motion of individual pen on powder coating machine, in straight tube glass tube during dusting Wall carries out ultraviolet light, is blowed simultaneously, and semi-finished product are made after dusting.
Wherein, it is divided into 1-5 areas by straight tube glass tube movement locus on powder coating machine, wherein 1st area blowing speed is 2.5m/s, blows 65 DEG C of air temperature;2nd area blowing speed is 2.5m/s, temperature 70 C of drying;3rd area blowing speed is 4.5m/s, 40 DEG C of temperature of drying; 4th area blowing speed is 5.5m/s, 40 DEG C of temperature of drying;5th area blowing speed is 5.5m/s, 55 DEG C of temperature of drying.Straight tube glass tube Rotating speed on powder coating machine is 920/h.When straight tube glass tube reaches 4 zone position of powder coating machine, under straight tube glass tube End pipe mouthful carries out ultrasonic wave cleaning, washes away slurry.
In addition, during dusting, slurry is recycles, and slurry is collected again defeated after the outflow of straight tube glass tube Enter in the slurry bucket;The charging aperture and grout outlet of slurry bucket are provided with the filter cloth of 200 mesh.
C, inspection:Position each to semi-finished product carries out light transmittance inspection, it is desirable to which light transmittance is controlled in 86-88%.
D, baking:Choose and examine qualified semi-finished product, 10min, finished product are toasted at 125 DEG C.
T8 straight tubes tube cell produced by the present invention, its bisque firmness boils 6h through 100 DEG C of water and not fallen off;100 DEG C of thermostatic roastings are baked 168h non yellowings.
Raw materials used in the present invention, equipment, is the conventional raw material, equipment of this area unless otherwise noted;In the present invention Method therefor, is the conventional method of this area unless otherwise noted.
It is described above, only it is presently preferred embodiments of the present invention, not the present invention is imposed any restrictions, it is every according to the present invention Any simple modification, change and equivalent transformation that technical spirit is made to above example, still fall within the technology of the present invention side The protection domain of case.

Claims (10)

1. a kind of powder-coating method of straight tube fluorescent tube, it is characterised in that comprise the following steps:
A, with powder:The raw material of volumes below part is weighed respectively:550-650 parts of resin glue dilutions, 10-30 parts of triethylene glycol diethyls Alkene ether, 10-20 parts of double [2- (methacryloxy) ethyoxyl] dimethylsilanes, 0.5-1.5 parts of isopropyl thioxanthones, 1-2 parts of levelling agents, 35-45 parts of dispersant solutions, 35-45 parts of hydrophilizing agents, 2-3 parts of defoamers, 100-200 parts of ethanol, 600-700 Part water;Weigh the water-soluble spread powder with the resin glue dilution liquid-solid ratio 600mL/1kg;Above-mentioned each raw material is mixed equal After even, 250-350 mesh filter clothes are crossed, slurry is obtained, adds water and slurry proportion is adjusted to 1.32-1.34g/cm3, with 4 glasss of viscosimeters of painting It is 18-20 seconds to determine viscosity, 40-60h is stood after stirring standby;
B, dusting:Straight tube glass tube is vertically loaded into powder coating machine, in the slurry bucket that slurry is loaded into powder coating machine, from straight tube glass tube Slurry is poured at upper end, dusting is carried out to its inwall;Ultraviolet light is carried out to straight tube glass inside pipe wall during dusting, together When be blowed, blowing temperature be 25-75 DEG C;Semi-finished product are made after dusting;
C, inspection:Position each to semi-finished product carries out light transmittance inspection, it is desirable to which light transmittance is controlled in 86-88%;
D, baking:Choose and examine qualified semi-finished product, 8-12min, finished product are toasted at 110-130 DEG C.
2. a kind of powder-coating method of straight tube fluorescent tube as claimed in claim 1, it is characterised in that the addition of each raw material in step a Sequentially it is:Water and ethanol are configured to mixed solution, dispersant solution is added in mixed solution;Then water-soluble expand is added Loose powder, stirs 40-80min;Continue to add resin glue dilution, stir 20-40min;Then surplus stock is added, is stirred 10-14h。
3. a kind of powder-coating method of straight tube fluorescent tube as claimed in claim 1 or 2, it is characterised in that the resin glue dilution By S-3501 types water-based acrylic resin, dilution is formed liquid in equal volume with water;The levelling agent is levelling agent 420;The dispersant Solution is 8-12wt% FD-40 dispersant solutions;The model S-833 of the water-soluble spread powder;The hydrophilizing agent is 10wt% N-80 hydrophilizing agents;The defoamer is P-76 defoamers.
4. a kind of powder-coating method of straight tube fluorescent tube as claimed in claim 1 or 2, it is characterised in that in the raw material of the slurry Also include naphthalenesulfonateformaldehyde formaldehyde condensation product sodium salt of the relative molecular mass in 3000-5000 of 4-8 parts by volume, and sulfonation degree exists More than 80%.
5. a kind of powder-coating method of straight tube fluorescent tube as claimed in claim 1 or 2, it is characterised in that in the raw material of the slurry Also include the focus ratio of 8-12 parts by volume;The relative molecular mass of the focus ratio is in 8-12 ten thousand, and solid content is 40- 50wt%。
6. a kind of powder-coating method of straight tube fluorescent tube as claimed in claim 1, it is characterised in that in step b dustings, straight tube glass Glass pipe is done on powder coating machine on the circular motion of individual pen, powder coating machine is divided into 1-5 areas by straight tube glass tube movement locus, wherein 1st area Blowing speed is 1-3m/s, 50-70 DEG C of temperature of drying;2nd area blowing speed is 1-3m/s, 55-75 DEG C of temperature of drying;Dry in 3rd area Speed is 3-5m/s, 25-45 DEG C of temperature of drying;4th area blowing speed is 4-6m/s, 25-45 DEG C of temperature of drying;5th area blowing speed For 4-6m/s, 40-60 DEG C of temperature of drying.
7. a kind of powder-coating method of straight tube fluorescent tube as described in claim 1 or 2 or 6, it is characterised in that the straight tube glass tube Rotating speed on powder coating machine is 900-960 branch/h.
8. the powder-coating method of a kind of straight tube fluorescent tube as described in claim 1 or 2 or 6, it is characterised in that during dusting, Slurry is recycles, and slurry is re-entered in the slurry bucket after the outflow of straight tube glass tube by collection;The charging aperture of slurry bucket with Grout outlet is provided with the filter cloth of 150-250 mesh.
9. the powder-coating method of a kind of straight tube fluorescent tube as described in claim 1 or 2 or 6, it is characterised in that during dusting, Dusting is carried out to position below the upper end mouth of pipe of straight tube glass tube;When straight tube glass tube reaches 4 zone position of powder coating machine, to straight The lower end mouth of pipe of pipe glass tube carries out ultrasonic wave cleaning, washes away slurry.
10. the powder-coating method of a kind of straight tube fluorescent tube as described in claim 1 or 2 or 6, it is characterised in that during dusting, Slurry in the slurry bucket is in vacuum environment.
CN201610491436.4A 2016-06-29 2016-06-29 A kind of powder-coating method of straight tube fluorescent tube Expired - Fee Related CN106057610B (en)

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