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Efficient powder coating method of straight tube

A technology for coating powder and lamp tubes, which is applied in the manufacture of tubes/lamp screens and the application of luminescent coatings. It can solve the problems of long curing time, low quality, and uneven thickness of the powder layer, and achieve good thickness uniformity and solidification. The effect of short time and high work efficiency

Active Publication Date: 2016-10-26
浙江江山三友电子有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the powder coating method of the above technical solution, the powder slurry cannot be solidified quickly, and the curing time is long, so the working effect of the entire powder coating process is not high enough
[0005] In addition, after the above-mentioned technical solution is coated with powder, the thickness of the powder layer formed on the inner wall of the glass tube after the slurry solidifies is not uniform enough, resulting in different light transmittance at various parts of the powder tube, resulting in low quality

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A high-efficiency powder coating method for straight tube lamps, comprising the following steps:

[0026] a. Powder preparation: Weigh the following raw materials respectively: 600mL resin glue diluent, 20mL triethylene glycol divinyl ether, 15mL bis[2-(methacryloyloxy)ethoxy]dimethylsilane, 1mL iso Propylthioxanthone, 1.5mL leveling agent 420, 40mL 10wt% FD-40 dispersant solution, 40mL 10wt% N-80 hydrophilic agent, 2.5mL P-76 defoamer, 150mL ethanol, 650mL water; Weigh S-833 water-soluble diffusing powder with a liquid-solid ratio of 600mL / 1kg of the resin glue. The resin glue diluent is prepared by diluting S-3501 water-based acrylic resin and water in equal volumes.

[0027] Prepare a mixed solution of water and ethanol, add the dispersant solution to the mixed solution; stir for 60 minutes; continue to add the resin glue dilution, stir for 30 minutes; then add the remaining raw materials, stir for 12 hours. After mixing the above raw materials, pass through a 300-...

Embodiment 2

[0035] A high-efficiency powder coating method for straight tube lamps, comprising the following steps:

[0036] a. Powder preparation: Weigh the following raw materials respectively: 550mL resin glue dilution, 10mL triethylene glycol divinyl ether, 10mL bis[2-(methacryloyloxy)ethoxy]dimethylsilane, 0.5mL Isopropylthioxanthone, 1mL leveling agent 420, 35mL12wt% FD-40 dispersant solution, 35mL 10wt% N-80 hydrophilic agent, 2mL P-76 defoamer, 100mL ethanol, 600mL water; Take S-833 water-soluble diffusing powder with a liquid-solid ratio of 600mL / 1kg to the resin glue. The resin glue diluent is prepared by diluting S-3501 water-based acrylic resin and water in equal volumes.

[0037] Prepare a mixed solution of water and ethanol, add the dispersant solution to the mixed solution; stir for 40 minutes; continue to add resin glue dilution, stir for 20 minutes; then add the remaining raw materials, stir for 14 hours. After mixing the above raw materials, pass through a 250-mesh fil...

Embodiment 3

[0044] A high-efficiency powder coating method for straight tube lamps, comprising the following steps:

[0045] a. Powder preparation: Weigh the following raw materials respectively: 650mL resin glue diluent, 30mL triethylene glycol divinyl ether, 20mL bis[2-(methacryloyloxy)ethoxy]dimethylsilane, 1.5mL Isopropyl thioxanthone, 2mL leveling agent 420, 45mL 8wt% FD-40 dispersant solution, 45mL 10wt% N-80 hydrophilic agent, 3mL P-76 defoamer, 8mL relative molecular mass at 3000 -5000 Naphthalenesulfonic acid formaldehyde condensation product sodium salt with a sulfonation degree of more than 80%, 12 mL of polyphenol oxygen resin with a solid content of 40 wt% and a relative molecular mass of 80,000 to 120,000, 200 mL of ethanol, and 700 mL of water; Take S-833 water-soluble diffusing powder with a liquid-solid ratio of 600mL / 1kg to the resin glue. The resin glue diluent is prepared by diluting S-3501 water-based acrylic resin and water in equal volumes.

[0046] The preparatio...

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PUM

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Abstract

The invention relates to the technical field of preparation of powdered tubes and discloses an efficient powder coating method of a straight tube. The efficient powder coating method of the straight tube comprises the steps of a, power preparation, to be specific, weighing resin glue diluent, triethylene glycol divinyl ether, bi[2-(methyl acryloyloxy)ethyoxyl]dimethyl silane, isopropylthioxanthone, a flatting agent, a dispersing agent solution, a hydrophilc agent, a defoaming agent, ethanol, water and water-soluble diffusion powder, uniformly mixing the raw materials, filtering the mixture by using filtering cloth to obtain powder syrup, adjusting the specific gravity and viscosity of the powder syrup, stirring the powder syrup uniformly and then stewing the powder syrup for standby use; b, powder-coating, to be specific, performing powder coating for the straight tube and obtaining a semi-finished product after the powder coating; c, inspection, to be specific, performing light transmittance inspection for the semi-finished product; and d, roasting, to be specific, selecting the semi-finished product which passes the inspection, and roasting to obtain a finished product. The power coating method is short in powder syrup curing time and high in working efficiency; the straight tube prepared by using the method disclosed by the invention is good in thickness uniformity of the powder layer, and the light transmittance of each part of the powdered tube is basically same. In addition, the powder layer has good bonding degree with a glass tube and is not easy to drop.

Description

technical field [0001] The invention relates to the technical field of powder tube preparation, in particular to an efficient powder coating method for straight tube lamps. Background technique [0002] During the preparation process of the powder tube of the LED lamp, the inner wall of the glass tube needs to be coated with powder, and the quality of the powder coating directly affects the light transmission effect of the lamp tube. The current powder coating process generally uses a pump to pour the powder slurry from the upper end of the glass tube, so that the powder slurry is left by gravity, flows out from the lower end of the glass tube, and then bakes, thus forming a layer on the inner wall of the glass tube. Layers of powder. [0003] The Chinese patent that application number is 200910182998.0 discloses a kind of fluorescent tube powder coating method, comprises the following steps: (1) the bright tube that washs is put on the powder coating machine, blows into ho...

Claims

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Application Information

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IPC IPC(8): H01J9/22
CPCH01J9/22
Inventor 刘珍菊何复道
Owner 浙江江山三友电子有限公司
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