Ultraviolet radiation and moisture dual-curing adhesive composition and application thereof

A UV radiation and dual curing technology, applied in adhesive types, conjugated diene adhesives, polyurea/polyurethane adhesives, etc., can solve the problem that shadow areas cannot be cured by UV light, and achieve high curing efficiency High, high cross-linking density, excellent optical properties

Pending Publication Date: 2019-04-05
WANHUA CHEM GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide an adhesive composition with dual curing of ultraviolet radiation and moisture, which has high crosslink density and curing efficiency, and its secondary moisture curing function can solve optical bonding and electronic packaging, etc. Defects where shaded areas of the application cannot be cured by UV light

Method used

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  • Ultraviolet radiation and moisture dual-curing adhesive composition and application thereof
  • Ultraviolet radiation and moisture dual-curing adhesive composition and application thereof
  • Ultraviolet radiation and moisture dual-curing adhesive composition and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0068] The formula of adhesive composition is as shown in table 1:

[0069] Table 1 The formula of adhesive composition

[0070]

[0071] At room temperature, weigh 50 parts by weight of polybutadiene polyurethane oligomer A with (meth)acryloxy and alkoxysilane functional groups, Krasol LBH-P3000 of 25 parts by weight, 12 parts by weight of Lauryl acrylate, 6 parts by weight of isobornyl acrylate and 5 parts by weight of 2-hydroxyethyl methacrylate were put into a stirring tank and stirred for about 60 minutes. Subsequently, weigh 1 part by weight of 1-hydroxycyclohexyl phenyl ketone (Irgacure 184), 0.3 part by weight of (2,4,6-trimethylbenzoyl) diphenylphosphine oxide (TPO), 0.5 parts by weight of di(acetylacetonate)dibutyltin (TIB KAT226) and 0.2 parts by weight of BASF Tinuvin 292 were also put into the stirred tank and continued to stir for about 60 minutes. After mixing evenly, filter and let it stand naturally for defoaming. During the entire feeding and stirring p...

Embodiment 2-5

[0089] The adhesive compositions of Examples 2-5 were prepared in a similar manner to Example 1. See Table 6 for the formula, specific process conditions, and UV curing and moisture curing properties of the adhesive composition of Examples 2-5. The changes in optical properties before and after aging are shown in Table 7.

[0090] Table 4 Example 1 and Comparative Examples 1-3 Adhesive Composition Formulation and UV Curing and Moisture Curing Properties

[0091]

[0092] Table 5 Comparison of optical properties before and after aging in comparative examples 1-3

[0093]

[0094] Table 6 Example 2-5 Adhesive composition formula, specific process conditions and UV curing and moisture curing properties

[0095]

[0096] Table 7 Comparison of optical properties before and after aging in Examples 2-5

[0097]

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Abstract

The invention provides an ultraviolet radiation and moisture dual-curing adhesive composition. A secondary moisture curing function of the composition is particularly suitable for occasions having shadow area curing requirements in the field of optical bonding and electronic packaging. An adhesive is prepared from the following raw materials: 30 to 50 percent by weight of an aliphatic polyurethaneoligomer having a (methyl)acryloyloxy group and an alkoxysilane functional group, 20 to 40 percent by weight of a (methyl) acrylate reactive diluents, 20 to40 percent by weight of an inert plasticizer not involved in crosslinking curing, 1 to 4 percent by weight of free radical photoinitiator, 0.1 to 1 percent by weight of organometallic compound moisture curing catalyst, and 0.2 to 1 percent byweight of an ultraviolet stabilizer and antioxidant.

Description

technical field [0001] The invention belongs to the field of adhesives, and in particular relates to an adhesive composition dual-cured by ultraviolet radiation and moisture and an application thereof. Background technique [0002] Liquid optically clear adhesive of a one-component UV-curable urethane acrylate system widely used in touch panels and display devices to bond cover glass, plastic or other optical materials to the main sensor unit or to each other , generally used to improve the optical performance and durability of the device. Major commercial applications of liquid optically clear adhesives include the assembly of small mobile devices with touch screens, such as smartphones and tablets, 3D LCD TVs, car navigation systems, and glass retarders. However, the adhesives and bonding processes used in optical display assembly remain deficient. For example, since the UV light cannot reach the ink area of ​​the liquid crystal panel frame and the flexible printed circu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J175/14C09J109/00C09J115/00C09J11/06C09J5/00
CPCC09J5/00C09J11/06C09J175/14C08L9/00C08L15/00
Inventor 雷雨王海梅
Owner WANHUA CHEM GRP CO LTD
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