Polyether-type urethane acrylate UV-cured adhesive and preparation method thereof

A technology of polyurethane acrylate and acrylate, which is applied in polyurea/polyurethane adhesives, adhesives, polymer adhesive additives, etc., and can solve the problems of drop resistance, poor impact resistance, heat and humidity resistance, low chemical resistance, Reduced reliability and other issues, to achieve the effect of drop resistance and vibration resistance, suitable for bonding and protection, and impact resistance

Active Publication Date: 2015-04-22
信泰永合(烟台)新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Devices using LEDs in mobile handheld devices, vehicle-mounted display systems, and automotive light sets require good drop resistance, impact resistance, and vibration resistance, and need to withstand high-temperature, high-humidity environments and high-low temperature impacts; existing technologies mostly use polyester Urethane acrylate is used to prepare UV-curable adhesives, which have good mechanical strength and modulus, relatively good rigidity but a little less flexibility, poor drop resistance and impact resistance, and low moisture and heat resistance and chemical resistance. However, the polyether polyurethane acrylate prepared from polyether polyols contains a large number of "-c-o-c-" chain links in the long chain molecules of polyether, and the "-c-o-" bond energy is small, and the internal It is easier to rotate, and the molecules are easy to bend, so that the synthesized prepolymer has higher flexibility after curing; at the same time, the ether bond in the polyether molecule can make the cured product obtain better water resistance; polyether polyurethane UV-curable adhesives prepared from acrylate prepolymers are more suitable for bonding and protection of LED-related devices

Method used

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  • Polyether-type urethane acrylate UV-cured adhesive and preparation method thereof
  • Polyether-type urethane acrylate UV-cured adhesive and preparation method thereof

Examples

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Effect test

Embodiment 1

[0031] A polyether urethane acrylate UV-curable adhesive, consisting of the following raw materials in parts by weight: 30 g of polyether urethane acrylate, 30 g of epoxy acrylate, 15 g of ethylene acrylate rubber, and trimethylolpropane formal acrylate 10 g, 10 g of isobornyl acrylate, 2 g of 1-hydroxycyclohexylbenzophenone, 2 g of fumed silica, and 1 g of γ-methacryloxypropyltrimethoxysilane.

[0032] The preparation method of above-mentioned polyether type urethane acrylate ultraviolet curing adhesive, the steps are as follows:

[0033] (1) Add 120 g of polyether diol with a molecular weight between 500 and 3000 into the reactor, vacuumize and dehydrate at 110°C for 1 hour, lower the temperature to below 50°C, and add 62.1g of isophorone diisocyanate and 0.1g of dibutyltin dilaurate, react at 70°C for 3h, add 11g of hydroxyethyl methacrylate, continue to react at 75°C for 2h, take a sample and measure the infrared spectrum to confirm that the infrared absorption peak of the...

Embodiment 2

[0038] A polyether urethane acrylate UV-curable adhesive, consisting of the following raw materials in parts by weight: 40 g of polyether urethane acrylate, 20 g of urethane acrylate, 8 g of ethylene acrylate rubber, 15 g of tetrahydrofuran acrylate, and 10 g of isobornyl acrylate , 1-hydroxycyclohexyl benzophenone 2g, 2,4,6-trimethylbenzoyl diphenylphosphine oxide 1.5g, fumed silica 3g and γ-methacryloxypropyl trimethoxy Silane 0.5g.

[0039] The preparation method of above-mentioned polyether type urethane acrylate ultraviolet curing adhesive, the steps are as follows:

[0040] (1) Add 120 g of polyether diol with a molecular weight between 500 and 3000 into the reactor, vacuum dehydrate at 115°C for 1 hour, lower the temperature to below 50°C, add 26.1g of toluene diisocyanate and 0.1g Dibutyltin dilaurate, react at 75°C for 2h, add 8g of hydroxyethyl methacrylate, continue to react at 70°C for 3h, take a sample and measure the infrared spectrum to confirm that the infrare...

Embodiment 3

[0045] A polyether type urethane acrylate UV-curable adhesive, consisting of the following raw materials in parts by weight: 65 g of polyether urethane acrylate, 15 g of urethane acrylate, 5 g of ethylene acrylate rubber, 5 g of isooctyl acrylate, and 5 g of isobornyl acrylate 5g, 1.5g of 2-hydroxy-2-methyl-1-phenylacetone, 1g of 2,4,6-trimethylbenzoyl diphenylphosphine oxide, 2g of fumed silica and γ-methacryloyl 0.5 g of oxypropyltrimethoxysilane.

[0046] The preparation method of above-mentioned polyether type urethane acrylate ultraviolet curing adhesive, the steps are as follows:

[0047] (1) Add 120g of polyether diol with a molecular weight between 500 and 3000 into the reactor, vacuum dehydrate at 120°C for 1 hour, lower the temperature to below 50°C, and add 20.2g of hexamethylene diisocyanate and 0.1g of dibutyltin dilaurate, react at 80°C for 2h, add 18g of hydroxypropyl methacrylate, continue to react at 75°C for 2h, take a sample and measure the infrared spectru...

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Abstract

The invention belongs to the technical field of adhesives and relates to a polyether-type urethane acrylate UV-cured adhesive and a preparation method thereof. The polyether-type urethane acrylate UV-cured adhesive comprises, by weight, 20-70 parts of polyether-type urethane acrylate, 10-40 parts of auxiliary resin, 5-20 parts of ethylene-acrylate rubber, 5-40 parts of an acrylate monomer, 5-35 parts of isobornyl acrylate, 1-7 parts of a photoinitiator, 1-5 parts of fumed silica and 0.5-2 parts of a silane coupling agent. Through use of the polyether-type urethane acrylate, auxiliary resin, ethylene-acrylate rubber and acrylate monomer, the polyether-type urethane acrylate UV-cured adhesive has excellent long-term high temperature resistance, low temperature resistance, high temperature and high humidity resistance, excellent shock resistance and a low cost and can be prepared by simple processes.

Description

technical field [0001] The invention belongs to the technical field of adhesives, and in particular relates to a polyether type polyurethane acrylate ultraviolet light curing adhesive and a preparation method thereof. Background technique [0002] With the advantages of high electro-optical conversion efficiency, low power consumption, long life, small size, energy saving and environmental protection, LED (light emitting diode) has been widely used as backlight for liquid crystal display, tablet computer and mobile phone screen, and has begun to develop rapidly in the field of semiconductor lighting; The connection between SMD LED (SMD LED) optical lens and PCB board, plug-in LED pin fixing and solder joint protection, assembly of bulb and base in LED lighting system, connection of FPC flexible circuit board and liquid crystal glass substrate, etc. Need to be reliably bonded and protected by adhesives. [0003] At present, most of the bonding between the optical lens and th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J175/14C09J123/08C09J11/06C09J11/04C09J11/08
Inventor 赵宁林志秀林绍盛
Owner 信泰永合(烟台)新材料有限公司
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