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Amine composition for a crash-proof two-component epoxy adhesive

An epoxy adhesive, two-component technology, applied in the direction of adhesive types, adhesives, epoxy resin glue, etc., can solve the problems of low impact resistance and low strength of two-component adhesives

Inactive Publication Date: 2015-07-08
SIKA TECH AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] Although fairly good crash resistance (toughness) is achieved with two-component (2K) epoxy adhesives according to the prior art, said crash resistance does not reach that of thermosetting one-component (1K) epoxy adhesives s level
In addition, two-component adhesives are less strong

Method used

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  • Amine composition for a crash-proof two-component epoxy adhesive
  • Amine composition for a crash-proof two-component epoxy adhesive
  • Amine composition for a crash-proof two-component epoxy adhesive

Examples

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Embodiment Construction

[0123] Examples are described below which further illustrate the invention but which should not limit the scope of the invention in any way. All parts and percentage data are by weight unless otherwise indicated.

[0124]

[0125]

[0126] The components are mixed with each other in the usual manner in the amounts listed in the table below, whereby component A and curing agent component B are obtained. To test performance, the two components were mixed and cured in a 1:1 equivalent ratio of NH-equivalent weight to epoxy equivalent weight. The resulting epoxy adhesives were evaluated according to the following tests. The results are also listed in the table below.

[0127] Tensile shear strength (ZSF) (DIN EN 1465)

[0128] Samples were prepared from the composition and from electrolytically galvanized H420 steel (eloZn) with dimensions 100 x 25 x 1.5 mm, where the bonding surface was 25 x 10 mm and the layer thickness was 0.3 mm. Cured for 4 hours at room temperatur...

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Abstract

The invention relates to a hardener component for use in a two-component epoxy adhesive comprising a component A having an epoxy resin and a hardener component B, wherein the hardener component comprises B1) at least one aliphatic acyclic polyetheramine having at least two amino groups and B2) at least one polyamine selected from a phenalkamine or an aliphatic polyetheramine, which contains at least one acyclic alkoxylate segment and at least one cycloaliphatic segment, and optionally B3) at least one amine compound selected from an amine-terminated rubber, an amine-terminated poly(tetramethylene ether glycol), and an amine-terminated poly(tetramethylene ether glycol)-poly(propylene glycol) copolymer.

Description

technical field [0001] The present invention relates to a curing agent component for a two-component epoxy adhesive consisting of a component A comprising epoxy resin and a curing agent component B, the invention also relates to Two-component epoxy adhesive comprising a hardener component and use of the hardener component in a two-component epoxy adhesive. Background technique [0002] In the manufacture of vehicles and accessories or of machines and instruments, advanced adhesives are often used instead of or in combination with conventional joining methods such as bolting, riveting, punching or welding. The high strength and impact toughness of the adhesive is of great importance when bonding structural components. [0003] Thermoset epoxy adhesives have been established in the field of vehicle manufacturing and vehicle repair, which are typically cured at temperatures in excess of 100°C, sometimes as high as 210°C. However, the use of thermosetting epoxy adhesives is of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G59/40C08G59/50C08G59/56C09J163/00
CPCC09J163/00C08G59/4021C08G59/5026C08G59/56C08G59/504C08G2650/50C08K3/36
Inventor D·霍夫斯特特尔T·弗希J·O·施库伦伯格
Owner SIKA TECH AG