Radiation curing sealant for packaging eyeglass nameplate or ornament

A radiation curing and sealant technology, applied in adhesives, other chemical processes, chemical instruments and methods, etc., can solve the problems of short epoxy glue time, inability to cure, and high production costs, to simplify the construction process and improve the curing time. , the effect of reducing production costs

Inactive Publication Date: 2010-12-29
DONGGUAN POWERBOND NEW MATERIALS TECH DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the sealing material used in this process is usually a two-component thermosetting epoxy glue, which cannot be cured at high temperature due to the high temperature resistance of plastic spectacle frames. Generally, it is lower than 60°C or directly at room temperature. Curing, the curing time is about 20 hours, so the production efficiency is extremely low, resulting in high production costs
Secondly, bef

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] A radiation curing sealant for eyeglass nameplates and jewelry packaging, by weight, contains components and the percentage content of each component is as follows

[0044] urethane acrylate oligomer 40%;

[0045] Polyester acrylate 20%;

[0046] Reactive diluent 36.7%;

[0047] Photoinitiator 2%;

[0048] Coupling agent 0.2%;

[0049] Antioxidant 1%;

[0050] Defoamer 0.1%;

[0051] Described polyester acrylate is polyester acrylate CN147; Described reactive diluent is isobornyl acrylate (IBOA), 1,6 hexanediol diacrylate (HDDA) and trimethylol propane triacrylate (TMPTA ), wherein the mass content of IBOA in the radiation-cured sealant is 9%, the mass content of HDDA in the radiation-cured sealant is 18.7%, and the mass content of TMPTA in the radiation-cured sealant is 9%; Photoinitiator is cleavage type photoinitiator 184; Coupling agent is silane coupling agent, selects gamma-methacryloxypropyltrimethoxysilane (KH570) for use; Described antioxidant is antioxid...

Embodiment 2

[0065] A radiation curing sealant for eyeglass nameplates and jewelry packaging, by weight, contains components and the percentage content of each component is as follows

[0066] Urethane acrylate oligomer 30%;

[0067] Polyester Acrylate 40%;

[0068] Reactive diluent 21.3%;

[0069] Photoinitiator 5%;

[0070] Coupling agent 3%;

[0071] Antioxidant 0.5%;

[0072] Defoamer 0.2%;

[0073] The polyester acrylate is polyester acrylate CN736; the reactive diluent is a mixture of isobornyl methacrylate (MIBOA), tripropylene glycol diacrylate (TPGDA) and dipentaerythritol hexaacrylate (DPHA) , wherein the mass content of MIBOA in the radiation-curable sealant is 10.8%, the mass content of TPGDA in the radiation-curable sealant is 3.6%, and the mass content of TMPTA in the radiation-curable sealant is 7.1%; Photoinitiator is the mixture of cleavage type photoinitiator 184 and photoinitiator TPO; Described coupling agent is a silane coupling agent, selects gamma-methacryloylo...

Embodiment 3

[0086] A radiation curing sealant for eyeglass nameplates and jewelry packaging, by weight, contains components and the percentage content of each component is as follows,

[0087] Polyurethane acrylate oligomer 70%;

[0088] Polyester Acrylate 10%;

[0089] Reactive diluent 7%;

[0090] Photoinitiator 8%;

[0091] Silane coupling agent 5%;

[0092] The polyurethane acrylate oligomer is commercially available CN982P90; the polyester acrylate is polyester acrylate CN736; the reactive diluent is isobornyl methacrylate (MIBOA); the photoinitiator is a cracking type photoinitiator Agent TPO; silane coupling agent is a mixture of vinyltrimethylsilane and 3-methacryloxypropyltrimethoxysilane.

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PUM

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Abstract

The invention provides a radiation curing sealant for packaging an eyeglass nameplate or an ornament. The radiation curing sealant comprises the following components in percentage by weight: 30 to 70 percent of urethane acrylate low polymer, 10 to 50 percent of urethane acrylate, 0 to 40 percent of reactive diluent, 0.2 to 8 percent of photo-initiator, 0.1 to 5 percent of silane coupling agent, 0 to 2 percent of antioxidant and 0 to 2 percent of antifoaming agent, wherein the reactive diluent is mono (bi/multi)-functional group acrylic ester; the photo-initiator is a cracking initiator, a hydrogen abstraction initiator or the combination of the cracking initiator and the hydrogen abstraction initiator; and the silane coupling agent is a mixture selected from one or more of epoxy silane, vinyl silane and (methyl) propylene acyloxy silane. When the sealant is used, the sealant is directly injected into a groove for accommodating the eyeglass nameplate or the ornament without sealant mixing. The sealant can be cured rapidly under the irradiation of ultraviolet light and packaging is further finished, so that production efficiency is improved greatly; simultaneously, energy is saved and raw material cost is lowered.

Description

technical field [0001] The present invention relates to glasses nameplate and decoration encapsulation process, in particular, relates to the sealant used in the glasses nameplate and decoration encapsulation, particularly relates to a kind of glasses nameplate and decoration encapsulation radiation curing sealant. Background technique [0002] The processing technology of eyeglass nameplate and jewelry packaging is generally realized by die-casting molding. The main steps are: put the nameplate or jewelry and plastic raw materials into the cavity of the die-casting mold, and die-cast together with the substrate to form a hard substrate. The nameplate or ornament is encapsulated between the substrate and the plastic. The heating temperature of this process reaches 200°C, the pressurization pressure reaches 9-11 tons, and the pressurization time is more than ten minutes. The heating temperature of this process is high, which is easy to affect the quality of nameplates or acc...

Claims

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Application Information

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IPC IPC(8): C08F290/06C08G18/67C08L51/08C09K3/10
CPCC08G2190/00C08F290/06C08F283/008C09J175/16
Inventor 黄战光欧阳亮张小中吴鹏飞刘兆辉吴国飞
Owner DONGGUAN POWERBOND NEW MATERIALS TECH DEV
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