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Reformable epoxy resin for composites

An epoxy resin, reshaping technology, applied in the direction of epoxy resin glue, synthetic resin layered products, applications, etc., can solve the problems that the adhesive cannot bond multiple layers, limit, and difficult strength

Inactive Publication Date: 2017-04-19
ZEPHYROS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, particularly when it is desired to shape or shape a composite structure, it can be difficult to identify a material that provides sufficient strength and also sufficient cohesion with adjoining layers of material
Thus, there are often significant limitations to the ability to bend, shape and form composite structures with both sufficient strength and sufficient cohesion
Further, the ability to form complex shapes can be limited by the adhesive used to form the composite such that when the composite structure is shaped, the adhesive cannot bond the multiple layers

Method used

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  • Reformable epoxy resin for composites

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Effect test

Embodiment

[0025] Two sheets of 1 / 8" maple were laminated each. The first sheet was laminated with a thermoset hardener comprising Araldite 1564SP epoxy and Aradur 22962 hardener (both available from Huntsman Corporation, The Woodlands, TX) in a ratio of about 4:1. Epoxy material laminated. The second sheet was laminated with RER film material (two sheets of 0.005" film) according to the present teachings. All laminates were cured in a press at 75 psi and 120°C for 15 minutes, then at 75 psi and 150°C for 2 hours. Three-point bend tests for flexural properties were performed at 85°C (according to ASTM D790). The thermoset laminate failed at 2.2% strain. The RER film stack did not fail at 2.2% strain. The RER film stack did not fail even at strains as high as 3.8%. The test was terminated at 3.8% strain due to failure of the wood material (as opposed to failure of the laminate). Thermoset laminates are thus limited by the flexibility of the thermoset epoxy, while RER laminates are lim...

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Abstract

The present invention contemplates a method for forming a composite structure including a plurality of rigid layers and one or more reformable epoxy resin layers. The resulting composite is molded to form a non-planar composite structure.

Description

technical field [0001] The present invention relates generally to reformable epoxy resins for composites, and more particularly to reformable epoxy resin adhesives layered between layers of material whereby the reformable ring Oxygen resins allow shaping or reshaping of the composite structure without poor adhesion of the adhesive or failure of the layers of material. Background technique [0002] Composite structures are commonly used in a variety of industries including building construction, sports equipment, furniture, automobiles, trains, aircraft (and other vehicles). It is commonly used due to its high strength composite structure and various materials that can be used for various composite layers. However, particularly when it is desired to shape or shape a composite structure, it can be difficult to identify a material that provides sufficient strength and also sufficient cohesion with adjoining layers of material. As such, there are often significant limitations ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B7/12B32B21/04B32B21/08B32B27/08C09J163/00
CPCB32B7/12B32B21/04B32B21/042B32B21/08B32B27/08C09J163/00B32B2307/738B32B2307/75B32B2479/00B32B2605/00B29C70/003B29C70/30F41H1/08F41H5/08B29K2063/00B32B5/022B32B5/024B32B2262/0269B32B2262/101B32B2262/04B32B1/00B29C43/18B32B37/02B32B37/10B32B37/1207B32B37/1284B32B2250/02B32B2260/046B32B2363/00B32B2605/18
Inventor S·格雷阿尔C·赫梅莱夫斯基B·马道斯A·古铁雷斯
Owner ZEPHYROS INC
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