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Adhesive composition, retroreflective reflective material and preparation method thereof

A retro-reflective and reflective material technology, applied in the direction of adhesives, adhesive types, chemical instruments and methods, etc., can solve the problems of reducing comfort and aesthetics, mass, reducing the flexibility of flexible reflective products, etc.

Inactive Publication Date: 2016-11-30
3M INNOVATIVE PROPERTIES CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The ribbon is a flexible fabric. When using an adhesive to adhere the glass beads to the ribbon, a large amount of adhesive is often required, which reduces the flexibility of the finally obtained flexible reflective product, thereby reducing the wearing comfort and aesthetics.

Method used

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  • Adhesive composition, retroreflective reflective material and preparation method thereof
  • Adhesive composition, retroreflective reflective material and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment approach

[0023] In the present invention, the specific forms of the epoxy resin and the flexible polymer are not particularly limited. For example, as a preferred embodiment of the present invention, the epoxy resin may include bisphenol A type epoxy resin, the flexible polymer may include an acrylate-based polymer, and the molecular weight of the acrylate-based polymer is not less than 20000.

[0024] Bisphenol A type epoxy resin is a resin compound including at least two reactive epoxy groups in its molecule. Bisphenol A type epoxy resin is a polymer compound obtained by condensing bisphenol A and epichlorohydrin under alkaline conditions, washing with water and removing solvent.

[0025] The macromolecular structure of bisphenol A epoxy resin has the following characteristics: 1) Both ends of the macromolecule are epoxy groups with strong reactivity; 2) There are many ether bonds on the main chain of the molecule, which is a linear polyether structure; 3) Many secondary hydroxyl g...

Embodiment 1

[0082] Mix 20 parts by mass of epoxy resin into 40 parts by mass of acrylic resin to obtain a mixture, then add 25 parts by mass of polyamide and 5 parts by mass of silane coupling agent to the above mixture, and stir evenly to obtain a cross-linkable Co-cured adhesive composition. Among them, polyamide is used as a co-curing agent; acrylic resin is an acrylate-based polymer, and the acrylic resin is purchased from 3M China Co., Ltd., the trade name is CSA3050, the molecular weight of the acrylic resin is 400,000, and the glass transition temperature is -20 ° C .

Embodiment 2

[0084] Mix 25 parts by mass of epoxy resin into 50 parts by mass of acrylic resin to obtain a mixture, then add 20 parts by mass of polyamide and 10 parts by mass of silane coupling agent to the above mixture, and stir evenly to obtain a cross-linkable Co-cured adhesive composition. Among them, polyamide is used as a co-curing agent; acrylic resin is an acrylate-based polymer, and the acrylic resin is purchased from 3M China Co., Ltd., the trade name is CSA3035, the molecular weight of the acrylic resin is 20000, and the glass transition temperature is -15 ° C .

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Abstract

The present invention provides a crosslinkable and curable adhesive composition, wherein the adhesive composition includes epoxy resin and a flexible polymer capable of crosslinking and curing with epoxy resin, and the glass transition temperature of the flexible polymer is between - Between 20°C and -10°C, the molecular weight of the flexible polymer is not less than 10000. The invention also provides a retro-reflective reflective material and a preparation method of the retro-reflective reflective material. The viscosity of epoxy resin is better, and the flexible polymer that can cross-link and solidify with epoxy resin has better flexibility, and the adhesive composition provided by the present invention has combined the advantages of both, when utilizing described cross-link and solidify When the adhesive composition is used to prepare the retroreflective reflective material, less adhesive composition is needed to bond the glass beads and the substrate together, so that the retroreflective reflective material has better flexibility and better wearing comfort.

Description

technical field [0001] The invention relates to the field of retro-reflective reflective materials, in particular to a cross-linkable curable adhesive composition, a retro-reflective reflective material comprising the cross-linkable curable adhesive composition and a preparation method of the retro-reflective reflective material. Background technique [0002] The retro-reflective reflective material is generally composed of glass beads 300, a reflective layer that acts as a mirror, a supporting substrate 100, and an adhesive layer 200 that bonds the glass beads to the substrate 100, wherein the reflective layer is arranged on On the surface where the glass bead 300 is attached to the adhesive layer 200, the two constitute a retro-reflective optical system. Such as figure 1 As shown, when a beam of light is incident on the surface of the retro-reflective reflective material, it will return to the direction of the light source through the refraction of the glass beads equival...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J133/08C09J133/10C09J163/02C09J167/02C09J11/08C09J11/06B32B27/14B32B27/34B32B7/12
Inventor 张希文
Owner 3M INNOVATIVE PROPERTIES CO