Ultraviolet (UV)-curing plasma display circuit protective agent with silver ion migration resistance and preparation method thereof

A plasma display, circuit protection technology, applied in coatings, epoxy coatings, polyurea/polyurethane coatings, etc., can solve the problem of crosslinking density, flexibility, high adhesion, inability to achieve plasma display, and long molding cycle. and other problems, to achieve the effect of not easy silver ion migration, good temperature shock resistance and fast curing speed

Inactive Publication Date: 2011-09-14
HUBEI UNIV OF TECH
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  • Summary
  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, current plasma display circuit protection agents are mostly sealed with two-component thermosetting epoxy resin or silicone rubber, and the curing cycle is 30-60 minutes. The molding cycle is long, the efficiency is low, and the cost is high.
However, using the reported UV-curable resin circuit insulation coating as a protective agent cannot take into account its crosslinking density, softness, and high adhesion, and it only plays a purely physical coating effect. Under high temperature and high humidity, The penetration of water vapor is still easy to produce silver ion migration, such UV curing resin protection can not meet the requirements of plasma display circuit protection agent

Method used

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  • Ultraviolet (UV)-curing plasma display circuit protective agent with silver ion migration resistance and preparation method thereof
  • Ultraviolet (UV)-curing plasma display circuit protective agent with silver ion migration resistance and preparation method thereof
  • Ultraviolet (UV)-curing plasma display circuit protective agent with silver ion migration resistance and preparation method thereof

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preparation example Construction

[0031] The preparation method of the UV curing anti-silver ion migration type plasma display circuit protective agent related to the present invention comprises the following steps:

[0032] (1) Mix 10-60wt% photoreactive monomer and 0.05-1wt% silver ion absorbent in the total system at room temperature, and prepare a uniform solution system by three-roll grinding or ultrasonic dispersion;

[0033] (2) Adding 2-8wt% photoinitiator and 0.1-5wt% processing aid to the solution system prepared in step (1), fully stirring or ultrasonic dispersion until completely dissolved;

[0034] (3) At 30-70°C, add (meth)acrylic acid-modified prepolymer accounting for 30-80wt% of the total system to the solution system prepared in step (2), stir thoroughly, and filter to obtain ultraviolet light Curing silver ion migration resistant plasma display circuit protection agent.

[0035] It should be noted that, without departing from the gist of the present invention, the photocurable resin compone...

Embodiment 1

[0037]

[0038]

[0039] According to the preparation method of the above-mentioned ultraviolet light curing silver ion migration resistant plasma display circuit protective agent, an ultraviolet light curing silver ion migration resistant plasma display circuit protective agent is prepared. Coated on silver electrodes with a spacing of 70 μm to a thickness of about 1mm, cured by 1000W medium-pressure mercury lamp for 15 seconds; test conditions: 100V DC bias voltage, 50°C, 90% RH, test time is 200 hours, no obvious The migration phenomenon of silver ions, see figure 2 .

Embodiment 2

[0041]

[0042] According to the preparation method of the above-mentioned ultraviolet light curing silver ion migration resistant plasma display circuit protective agent, an ultraviolet light curing silver ion migration resistant plasma display circuit protective agent is prepared. Coated on silver electrodes with a spacing of 70 μm to a thickness of about 1mm, cured by 1000W medium-pressure mercury lamp for 20 seconds; test conditions: DC bias voltage of 100V, 50°C, 90% RH, test time of 200 hours, no obvious migration of silver ions.

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Abstract

The invention provides an ultraviolet (UV)-curing plasma display circuit protective agent with silver ion migration resistance and a preparation method thereof. The protective agent comprises the following components by mass percent: 20-80wt% of modified (methyl) acrylic prepolymer, 10-60wt% of photoreactive monomer, 0.1-5wt% of processing aid and 0.05-1wt% of silver ion absorbent. In the preparation method, the components are fully dispersed and filtered to obtain the UV-curing plasma display circuit protective agent. The UV-curing plasma display circuit protective agent has the advantages of double synergistic effect of physical coating and silver ion chemical absorption, silver ion migration resistance, normal-temperature curing capability, high production efficiency, energy conservation, good adhesive force, good insulating property, good durability and the like, and is environment-friendly; and the protective agent can be applied to protection and insulation of a plasma display circuit as well as a thick film hybrid integrated circuit, a low noise circuit, a high-stability passive network, a high-frequency linear circuit, a high-precision linear circuit, a microwave circuit, a high-voltage circuit and the like which need to prevent silver ion migration.

Description

technical field [0001] The invention belongs to the field of plasma display circuit protectors, and relates to an ultraviolet light curing silver ion migration-resistant plasma display circuit protector and a preparation method thereof. Background technique [0002] Ultraviolet (UV) curing usually refers to the instant transformation of liquid low-viscosity fluids into highly cross-linked solid materials with protective or decorative functions under the irradiation of ultraviolet light or electron beams. In recent years, UV curing adhesives for assembly have developed rapidly with the progress of UV curing technology and the needs of scientific and technological development. It has been used in optical lenses, optical fibers, liquid crystal display (LCD) sealing and so on. UV-curable adhesives for assembly have specific quality requirements according to different uses. For example, the sealing adhesive of liquid crystal display panels requires good adhesion to the substrate...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F290/06C08K3/26C09D163/10C09D175/16C09D7/12
Inventor 李学锋闫晗
Owner HUBEI UNIV OF TECH
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