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Low-viscosity environmental-friendly UV/moisture dual-curing three-proofing adhesive and preparation method thereof

A dual-curing and moisture-curing technology, applied in adhesives, adhesive types, adhesive additives, etc., can solve problems such as high viscosity, achieve good toughness, good surface dryness, and improve toughness

Active Publication Date: 2019-02-22
YANTAI SEAYU NEW MATERIALS CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although solvent-free environmentally friendly "three-proof glue" has appeared on the market, its viscosity is generally higher than 150mPa.s, and some products that require glue spray thickness less than 20um cannot meet the requirements.

Method used

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  • Low-viscosity environmental-friendly UV/moisture dual-curing three-proofing adhesive and preparation method thereof
  • Low-viscosity environmental-friendly UV/moisture dual-curing three-proofing adhesive and preparation method thereof
  • Low-viscosity environmental-friendly UV/moisture dual-curing three-proofing adhesive and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] To make your own low viscosity moisture curable acrylate follow these steps:

[0028] Add 1mol of HDI trimer, 50ppm of polymerization inhibitor, and 100ppm of antioxidant into a three-necked flask with a thermometer, heat and stir, and when the temperature reaches 50°C, add 1mol of hydroxyl acrylate, and continue to heat up to 70-80°C. The reaction is carried out at 70-80°C for 2-3 hours, and the material is discharged after cooling down to obtain a low-viscosity moisture-curable acrylate.

Embodiment 2

[0030] Self-made viscosity difunctional polyurethane acrylate is carried out according to the following steps:

[0031] Add 2.2mol of isocyanate monomer into a three-necked flask with a thermometer, heat and stir, when the temperature reaches 60°C, add 1mol of polyether diol, add 20ppm of catalyst, raise the temperature to 70-75°C, react for 2~3h, use infrared The spectrometer analyzes the content of OH groups, and when the peak of OH completely disappears, the addition reaction is stopped to obtain low-viscosity difunctional polyurethane acrylate.

Embodiment 3

[0033] The present invention selects self-made low-viscosity moisture-curable acrylate, self-made low-viscosity bifunctional urethane acrylate, acrylic reactive diluent, photoinitiator, polymerization inhibitor, silane coupling agent, according to the appropriate number of formulations , to prepare low-viscosity environmentally friendly UV / moisture dual-cure three-proof adhesive.

[0034] The following are examples given by the inventors, but the present invention is not limited to these examples.

[0035] Table I

[0036]

[0037] Preparation:

[0038]Accurately weigh various raw materials according to the number of formulations in Table 1, self-made low-viscosity moisture-curable acrylate, self-made low-viscosity difunctional urethane acrylate, isobornyl acrylate, tetrahydrofuran acrylate, photoinitiator 184, Photoinitiator TPO, photoinitiator LTM, polymerization inhibitor p-benzoquinone, and coupling agent KH570 are added into the mixer in sequence, the temperature is ...

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Abstract

The invention discloses a low-viscosity environmental-friendly UV / moisture dual-curing three-proofing adhesive and a preparation method thereof. The low-viscosity environmental-friendly UV / moisture dual-curing three-proofing adhesive is composed of the following raw materials in parts by weight: 30-50 parts of self-made low-viscosity moisture-curable acrylate, 10-30 parts of self-made low-viscosity bifunctional polyurethane acrylate, 30-50 parts of acrylic reactive diluents, 3-8 parts of a photoinitiator, 0.05-0.2 part of a polymerization inhibitor and 1-3 parts of a silane coupling agent. Thethree-proofing adhesive provided by the invention has the viscosity of less than 50mPa.s, is easy to spray, excellent in leveling effect and excellent in toughness, and reaches the adhesion strengthof 5B. Moreover, in an area with less ultraviolet light, the low-viscosity environmental-friendly UV / moisture dual-curing three-proofing adhesive disclosed by the invention has lower viscosity, does not have any volatile solvent, and is high in curing speed, excellent in surface drying, excellent in toughness, high in adhesion reliability and wide in application range.

Description

technical field [0001] The invention belongs to the field of light-curing materials, and in particular relates to a low-viscosity, environment-friendly UV / moisture dual-curing three-proof adhesive and a preparation method thereof. Background technique [0002] As we all know, UV-curable adhesives have some outstanding features such as good compatibility, fast curing speed, high strength, and environmental protection, so they are widely used in the fields of optics, electronic appliances, and digital discs. With the continuous expansion of the application field of UV curing technology, UV curing adhesives play an important role in products such as mobile phones, televisions, computers, navigators, and vehicle displays. As electronic products gradually turn to miniaturization, integration, and multi-function, the electronic assembly industry is also developing at a high speed, and the requirements for the safety performance and reliability of assembled products are also gettin...

Claims

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Application Information

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IPC IPC(8): C09J175/14C09J11/06
CPCC09J11/06C09J175/14
Inventor 李不悔李峰贺国新张利文
Owner YANTAI SEAYU NEW MATERIALS CORP LTD
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