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Fast curing oil-uptaking epoxy-based structural adhesives

A technology of adhesive and curing agent, which is applied in the direction of adhesive type, surface pretreatment bonding method, adhesive, etc., and can solve problems such as poor adhesion

Inactive Publication Date: 2011-08-31
3M INNOVATIVE PROPERTIES CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Also, the failure mode in these cases is usually cohesive failure, where the adhesive releases cleanly from one of the substrates, indicating poor adhesion

Method used

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  • Fast curing oil-uptaking epoxy-based structural adhesives
  • Fast curing oil-uptaking epoxy-based structural adhesives
  • Fast curing oil-uptaking epoxy-based structural adhesives

Examples

Experimental program
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Effect test

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[0162] materials used

[0163] Low molecular weight ester 1: Hydroxy acrylate monomer (commercially available from Hexion Specialty Chemicals B.V. (Hoogvliet Rt., The Netherlands) under the trade designation "ACE", which is the reaction product of 2-acrylic acid and glycidyl tert-decanoate.

[0164] Low molecular weight ester 2: glycidyl ester of versatic acid (a branched alkane carboxylic acid) (commercially available from Hexion Specialty Chemicals B.V. (Hoogvliet Rt., Netherlands) under the trade designation "CARDURA E10P").

[0165] Technical grade tris-2,4,6-dimethylaminomethyl-phenol catalytic tertiary amine additive (available from Air Products and Chemicals Inc. (Allentown, PA, USA) under the trade designation "ANCAMINE K54").

[0166] Filler (available from Nabaltec AG (Schwandorf, Germany) under the trade designation "APYRAL 24").

[0167] n-Butyl glycidyl ether (available from Alfa Aesar (Ward Hill, MA, USA)).

[0168] A reactive diluent based on 1,4-cyclohexane...

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Abstract

Two-part adhesive compositions are described. The two-part adhesives have a first part and a second part, said composition comprising at least one aromatic epoxy resin in the first part; at least one amine curing agent in the second part; and at least one ester in at least one of the first and / or second part. The ester corresponds to the general formula R2-CO-OR1; wherein R1 is an organic moiety comprising at least one of (i) at least one epoxy group or (ii) at least one acryl group and R2 is a branched alkyl group. The structural adhesive may be used to form bonded joints between adherents having clean surfaces, as well as those having surfaces contaminated with hydrocarbon-containing materials, such as oils, processing aids and lubricating agents.

Description

technical field [0001] This invention relates to two-part epoxy-based adhesives. The invention also relates to methods of making and using the two-part epoxy-based adhesives. Background technique [0002] Structural adhesives are generally thermosetting resin compositions that can be used to replace or augment conventional joining techniques such as screws, bolts, nails, staples, rivets and metal fusion processes such as welding, brazing and soldering. Structural adhesives are used in many applications, including general-purpose industrial applications as well as high-performance applications in the automotive and aerospace industries. To be suitable as a structural adhesive, the adhesive should exhibit high mechanical strength, high impact resistance and / or cohesive strength which is Fasteners can achieve quite. [0003] Adherent surfaces (typically metal surfaces, ceramic surfaces, alloy surfaces, glass surfaces, etc., especially automotive parts or aircraft components)...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J163/00B32B7/12B32B15/00
CPCC09J163/00C08L63/10C08G59/50C08L2666/22B32B7/12B32B15/00C09J5/02C09J11/00
Inventor 德克·科洛沃特马蒂亚斯·波浦
Owner 3M INNOVATIVE PROPERTIES CO