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Flexible ink for white cover film of LED (Light Emitting Diode) soft light strip plate and preparation method of flexible ink

A technology of LED flexible light bar and covering film, which is applied in the direction of ink, application, household utensils, etc., can solve the problems of easy cracking, easy falling off, yellowing, etc., achieve good wipe resistance and high temperature resistance, meet the process requirements, The effect of good bending resistance

Inactive Publication Date: 2012-07-04
四川日航电子科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the main resin of flexible ink for white cover film is generally prepared with epoxy resin or saturated polyester resin. Because epoxy resin is brittle, it is difficult to meet the bending resistance requirements of long light bars; It is easy to crack and yellow, and it is difficult to meet the requirements of the reflow soldering process of the light bar. Therefore, the existing heat-curing white inks on the market have poor bending resistance to varying degrees. After reflow soldering, they become yellow and embrittled. Easy to fall off after scrubbing

Method used

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Examples

Experimental program
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Embodiment Construction

[0017] The present invention will be further described below in combination with embodiments.

[0018] The flexible ink used for the white covering film of the LED flexible light strip described in the present invention is made of the raw materials with the following mass ratios:

[0019] Thermosetting resin 30%~70%

[0020] Curing agent 2%~10%

[0021] Thinner 5%~30%

[0022] Filling 10% ~ 40%.

[0023] Preferably, the thermosetting resin is selected from silicone-modified saturated polyester, including straight-chain silicone-modified saturated polyester and branched-chain silicone-modified saturated polyester, the hydroxyl value of which is 10-30 mgKOH / g, The acid value is 40~60mgKOH / g. Preferably, the curing agent is a compound with a reactive group that can cure saturated polyester, and can be selected from hexamethylene diisocyanate, hydrogenated diphenylmethane diisocyanate, isophorone diisocyanate, imino type Melamine formaldehyde resin, methyl etherified mela...

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PUM

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Abstract

The invention relates to the technical field of an LED (Light Emitting Diode) long strip light, in particular to flexible ink for a white cover film of an LED soft light strip plate and a preparation method of the flexible ink. The flexible ink for the white cover film of the LED soft light strip plate is prepared from the following raw materials in percentage by mass: 30-70 percent of thermosetting resin, 2-10 percent of curing agent, 5-30 percent of diluting agent and 10-40 percent of filler. According to the ink and the preparation method thereof, excellent bend resistance performance can be achieved, the wiping resistance performance and the high temperature resistance performance are better, the ink is difficult to crack and yellow under a high temperature condition, and the requirements of a reflow soldering process of the light strip plate are met.

Description

technical field [0001] The invention relates to the technical field of LED strip lamps, in particular to a flexible ink for a white covering film of LED flexible lamp strips and a preparation method thereof. Background technique [0002] In recent years, LED strip lights have been widely used in various places, such as the lighting of the walls of corporate buildings, the lighting of government buildings, the lighting of walls of historical buildings, the decoration of entertainment venues, and night scene projects. The scope involved is also getting wider and wider. As the insulating layer and substrate material of the LED flexible light strip, the white cover film is an important part of it. At present, the main resin of flexible ink for white cover film is generally prepared with epoxy resin or saturated polyester resin. Because epoxy resin is brittle, it is difficult to meet the bending resistance requirements of long light bars; It is easy to crack and yellow, and it ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D11/10C09D11/104
Inventor 洪立秋向必军孙忠登吴飞龙李玉伟
Owner 四川日航电子科技股份有限公司
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