Composition and method for enhancing weld strength of polyphenylene ether compositions

Abstract

The present invention provides a welded article having improved weld line strength, said article comprising a resin composition wherein said resin composition comprises at least one polyphenylene ether, at least one poly(alkenylaromatic) compound and at least one polyalkyleneimine. In a preferred embodiment, the welded article has been manufactured using at least one of ultrasonic welding and vibration welding, e.g., linear friction welding and spin friction welding. In another preferred embodiment, the welded article has a peak weld line stress of at least 800 psi, preferably of at least 1000 psi.

Description

Background technique [0001] Polyphenylene ether resins generally exhibit outstanding mechanical properties, heat resistance, electrical characteristics, and flame resistance, and are generally used in a wide range of applications such as auto parts. In particular, various auto parts such as interior components such as instrument panels and armrests, and underhood components such as resonators, and air intake components. Many of these components require a high degree of heat resistance, making polyphenylene ether resin compositions ideally suited for these applications; however, many of these same components are made in multiple parts and require component assembly adhesives, ultrasonic welding ) and / or friction welding (friction welding) technology. Adhesives often have disadvantages such as curing time, storage, handling and chemical odor issues. Welding techniques are often preferred, but failure due to repeated, prolonged periods of vibration and shock while welding is a ...

AI Technical Summary

Problems solved by technology

Welding techniques are often preferred, but failure due to repeated, prolonged periods of vibration and shock while welding is a serious problem during the life of the vehicle

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