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Photosensitive solder resist white ink, LED circuit board and preparation method

A technology of LED circuit board and white ink, which is used in ink, printed circuit manufacturing, circuit mask manufacturing, etc., can solve the problems of high raw material cost of photosensitive solder resist white ink, insufficient temperature resistance of resin, darkening of color, etc. Good photoinitiation efficiency, excellent high temperature resistance and sufficient hardness

Active Publication Date: 2021-04-20
DONGGUAN DAXING CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problems of the prior art, the present invention provides a photosensitive solder resist white ink, a preparation method and its application in LED circuit boards, which solves the problems of high raw material cost of photosensitive solder resist white ink, insufficient temperature resistance of the resin used, and occurrence of sticking back when the temperature rises , the phenomenon of darkening

Method used

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  • Photosensitive solder resist white ink, LED circuit board and preparation method
  • Photosensitive solder resist white ink, LED circuit board and preparation method
  • Photosensitive solder resist white ink, LED circuit board and preparation method

Examples

Experimental program
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Embodiment 1

[0048] A kind of photosensitive solder resist white ink of the present embodiment comprises following components:

[0049]

[0050] The titanium dioxide is composed of rutile type titanium dioxide and anatase type titanium dioxide according to the mass ratio of 4:1;

[0051] The particle size of the titanium dioxide is 5-10 μm.

Embodiment 2

[0053]

[0054] The titanium dioxide is composed of rutile type titanium dioxide and anatase type titanium dioxide according to the mass ratio of 4:1;

[0055] The particle size of the titanium dioxide is 5-10 μm.

Embodiment 3

[0057]

[0058] The titanium dioxide is composed of rutile type titanium dioxide and anatase type titanium dioxide according to the mass ratio of 4:1;

[0059] The particle size of the titanium dioxide is 5-10 μm.

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Abstract

The invention relates to the technical field of solder resist ink, in particular to a photosensitive solder resist white ink, preparation method and application in LED circuit boards, comprising 30-35 parts of photosensitive resin, 5-8 parts of photoinitiator and titanium dioxide 20-30 parts, nano-silica 5-10 parts, nano-zinc oxide 5-7 parts, defoamer 1-2 parts, adhesion promoter 1-3 parts, dipropylene glycol methyl ether 5-12 parts, leveling agent 1-3 parts, antioxidant 1-3 parts, the titanium dioxide is composed of rutile-type titanium dioxide and anatase-type titanium dioxide in a mass ratio of 4:1; the particle size of the titanium dioxide is 5-10 μm; This is due to the high raw material cost of the photosensitive solder resist white ink, the insufficient temperature resistance of the resin used, and the phenomenon that the temperature rises and the color becomes dark.

Description

technical field [0001] The invention relates to the technical field of solder resist ink, in particular to a photosensitive solder resist white ink, an LED circuit board and a preparation method. Background technique [0002] Solder resist ink is one of the key materials of printed circuit boards (PCB). Its main function is to cover the lines that do not need to be soldered on the surface of the circuit board to prevent short circuit and oxidation during soldering. [0003] Conventional liquid photosensitive solder resist ink is a kind of ink with both light curing and heat curing. Its photosensitive resin is obtained by reacting novolak epoxy resin with unsaturated carboxylic acid and then reacting with acid anhydride. Because of its resin It contains acid groups, so it can be developed with alkaline water. After curing, the ink has excellent heat resistance, but because of the large shrinkage after curing, the solder mask layer is not resistant to bending. Photosensitive ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D11/101C09D11/03C09D11/107H05K3/00
CPCC09D11/03C09D11/101C09D11/107H05K3/0076
Inventor 段传喜
Owner DONGGUAN DAXING CHEM
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