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A kind of single-component epoxy insulating crystal-bonding adhesive for LED and preparation method thereof

A technology of epoxy insulation and solid crystal glue, applied in the direction of epoxy resin glue, adhesive, adhesive type, etc., can solve the problems of poor toughness and yellowing, achieve high bonding strength, low cost, and solve the problem of yellowing resistance. The effect of degeneration

Active Publication Date: 2021-03-02
上海汉司实业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the influence of its own molecular structure, it also has disadvantages such as poor toughness and yellowing in long-term lighting experiments.

Method used

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  • A kind of single-component epoxy insulating crystal-bonding adhesive for LED and preparation method thereof
  • A kind of single-component epoxy insulating crystal-bonding adhesive for LED and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Embodiment 1: Weigh epoxy resin and isocyanate-modified epoxy resin according to the mass given in Table 1 and mix them under a heating platform at 80°C. The mixing method is mechanical stirring, and the stirring rate is 1000 rpm , the time is 10 minutes, then cool the uniformly stirred mixture to room temperature, and add diluent, antioxidant and thixotropic agent in sequence, continue to stir for 10 minutes after the addition is completed, and add curing agent and curing agent to the mixture after mixing evenly Accelerator, after mechanical stirring for 5 minutes, the mixture is transferred to a high-speed shear mixer for mixing. The mixing speed is 2000 rpm, and the time is 30s. Repeat the mixing process in the high-speed shear mixer for 3 times to obtain a homogeneous mixture. The jelly is the crystal-bonding adhesive.

[0041] Examples 2-6 were prepared according to the steps shown in Example 1.

Embodiment 7

[0042] Embodiment 7: One-component epoxy insulating crystal-bonding adhesive for LED, calculated according to its parts by weight, the composition is as follows: 100 parts of epoxy resin, 25 parts of isocyanate modified epoxy resin, 5 parts of diluent, and 8 parts of curing agent , 1 part of curing accelerator, 0.1 part of antioxidant, 1 part of thixotropic agent.

Embodiment 8

[0043] Embodiment 8: One-component epoxy insulating crystal-bonding adhesive for LED, calculated according to its weight parts, the composition is as follows: 100 parts of epoxy resin, 60 parts of isocyanate modified epoxy resin, 20 parts of diluent, and 25 parts of curing agent , 10 parts of curing accelerator, 1 part of antioxidant, 10 parts of thixotropic agent.

[0044] Examples 7-8 were prepared according to the steps shown in Example 1.

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Abstract

The invention discloses a single-component epoxy insulating crystal-bonding adhesive for LEDs, which is composed of 100 parts of epoxy resin, 25-60 parts of isocyanate-modified epoxy resin, and 5-20 parts of diluent 8-25 parts of curing agent, 1-10 parts of curing accelerator, 0.1-1 part of antioxidant, 1-10 parts of thixotropic agent; the present invention has the following advantages: 1. Excellent yellowing resistance, good toughness And impact resistance, high bonding strength, suitable for high-speed dispensing process, etc.; 2. Using self-made isocyanate-modified epoxy resin solves the shortcomings of insufficient yellowing resistance and poor toughness in traditional epoxy die-bonding adhesives 3. The method for preparing isocyanate-modified epoxy resin developed by the present invention has simple conditions, no solvent, no pollution to the environment, and low cost.

Description

technical field [0001] The invention belongs to the technical field of insulating crystal-bonding glue preparation, in particular to a single-component epoxy insulating crystal-bonding glue for LEDs and a preparation method thereof. Background technique [0002] With the advancement of science and technology and the development of society, people's awareness of resource shortage and environmental pollution has gradually increased. In order to achieve the goal of sustainable social and economic development, my country has invested a lot of manpower, financial and material resources in the fields of energy conservation and environmental protection. As a large energy consumer, lighting energy consumption consumes a large amount of electric energy every year. Therefore, it is necessary to develop and use more energy-saving and environmentally friendly lighting methods. LED has the characteristics of power saving, long life and environmental protection, and has achieved rapid de...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J163/00C08G18/73C08G18/58H01L33/56
CPCC08G18/58C08G18/73C08L2201/08C08L2203/206C08L2205/02C09J163/00H01L33/56C08L63/00
Inventor 林孝蔚吴海平向劲松
Owner 上海汉司实业有限公司
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