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Two-component acrylic structural adhesive for metal oily surface adhesion

A structural adhesive and surface bonding technology, applied in the direction of adhesive types, polyurea/polyurethane adhesives, adhesives, etc. Overcome the effect of slow curing

Active Publication Date: 2021-04-13
3M INNOVATIVE PROPERTIES CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing adhesive products usually contain highly volatile methyl methacrylate (MMA). Such adhesive products are likely to cause environmental pollution and cause damage to the user's body after application.
In addition, adhesives containing cyanoacrylate components are quick-drying adhesives and are not suitable for sizing in the automotive industry where oil-based bonding is often required

Method used

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  • Two-component acrylic structural adhesive for metal oily surface adhesion
  • Two-component acrylic structural adhesive for metal oily surface adhesion
  • Two-component acrylic structural adhesive for metal oily surface adhesion

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0069] Examples and comparative examples provided below are provided to facilitate the understanding of the present invention, and these examples and comparative examples should not be construed as limiting the scope of the present invention. Unless otherwise indicated, all amounts are by weight, and the specific amount of each component is by weight.

[0070] Raw materials used in Examples and Comparative Examples of the present invention are shown in Tables 1-1 and 1-2 below, and unless otherwise specified, these raw materials were used as they were without further treatment after purchase.

[0071] Table 1-1: Raw material list of component (A)

[0072]

[0073] Table 1-2: Raw material list of component (B)

[0074]

[0075] testing method

[0076] Adhesive strength (i.e. T-peel adhesive strength) test method

[0077] According to the following method, the various structural adhesives obtained in the following examples and comparative examples were tested with r...

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Abstract

The invention relates to a two-component acrylic structural adhesive for metal oily surface adhesion, which comprises a component (A) and a component (B), wherein the component (A) comprises 35-70 parts by weight of a polymerizable acrylate monomer, 1-10 parts by weight of an acidic polymerizable acrylate monomer, 0.2-2.0 parts by weight of a tertiary amine reducing agent, 5-10 parts by weight of a non-reactive toughening agent and 15-35 parts by weight of a reactive toughening polymer, the polymerizable acrylate monomer does not comprise methyl methacrylate and / or cyanoacrylate; and the component (B) comprises 20-35 parts by weight of an epoxy resin, 20-35 parts by weight of a diacyl peroxide, 15-30 parts by weight of an inorganic filler, and 10-30 parts by weight of an inert liquid carrier. By utilizing the adhesive disclosed by the invention, not only can the metal oily surface be directly bonded, but also the metal oily surface can be bonded with high bonding strength (higher than 5N / mm), and meanwhile, the problems of remarkable loss of solid content and environmental pollution in a curing process are avoided.

Description

technical field [0001] The present invention relates to the field of adhesives, and more particularly to two-component acrylic structural adhesives for bonding oily metal surfaces, especially for the automotive industry. Background technique [0002] Due to the needs of environmental protection and energy saving, the lightweight of automobiles has become the trend of the development of automobiles in the world. Aluminum, magnesium and FRP are the main lightweight materials. The density of aluminum is about 1 / 3 of that of steel, and it is the most widely used lightweight material. The density of magnesium is about 2 / 3 of that of aluminum, and it is the lightest metal in practical application. Magnesium alloy has strong vibration absorption ability, good cutting performance, and good metal mold casting performance, so it is very suitable for manufacturing auto parts. In the competition with non-ferrous alloys and polymer materials, steel materials continue to exert their ad...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J175/14C09J163/00
CPCC09J175/14C09J163/00C08L63/00C08L75/14
Inventor 童凌杰
Owner 3M INNOVATIVE PROPERTIES CO
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