Epoxy sizing composition for filament winding

a technology of sizing composition and filament winding, which is applied in the direction of transportation and packaging, thin material handling, coating, etc., can solve the problems of low thermal conductivity, high tensile strength of glass fibers, heat resistance, moisture resistance, etc., and achieves improved wet tensile strength performance, color-free effect, and easy dispersal in water
US20060036003A1Inactive Publication Date: 2006-02-16OCV INTELLECTUAL CAPITAL LLC
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Patent Information

Authority / Receiving Office
US · United States
Patent Type
Applications(United States)
Current Assignee / Owner
OCV INTELLECTUAL CAPITAL LLC
Publication Date
2006-02-16
Estimated Expiration
Not applicable · inactive patent
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Abstract

A sizing composition containing an epoxy film former, a silane package that includes an aminosilane coupling agent and an epoxy silane coupling agent, a cationic lubricant, a non-ionic lubricant, an antistatic agent, and at least one acid is provided. The epoxy resin emulsion includes a low molecular weight liquid epoxy resin and one or more surfactants. The epoxy resin preferably has an epoxy equivalent weight of from about 185 to about 192. The sizing composition may optionally contain polyurethane or epoxy / polyurethane film former. The sizing composition may be used to size glass fibers used in filament winding applications to form reinforced composite articles with improved mechanical properties, wet tensile properties, improved resistance to cracking, and improved processing characteristics. The sizing composition also provides improved processing parameters such as low fuzz and reduced drag.
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Description

CROSS REFERENCE TO RELATED APPLICATIONS

[0001] This application is a continuation-in-part of U.S. patent application Ser. No. 10 / 872,103 entitled “Epoxy Sizing Composition For Filament Winding” filed Jun. 18, 2004, the entire content of which is expressly incorporated herein by reference.TECHNICAL FIELD AND INDUSTRIAL APPLICABILITY OF THE INVENTION

[0002] The present invention relates generally to size compositions for glass fibers, and more particularly, to size compositions containing an epoxy resin emulsion that includes a low epoxy equivalent weight epoxy resin for sizing glass fibers used in a filament winding application. A composite article formed from fibers sized with the sizing composition is also provided. BACKGROUND OF THE INVENTION

[0003] Glass fibers are useful in a variety of technologies. For example, glass fibers are commonly used as reinforcements in polymer matrices to form glass fiber reinforced plastics or composites because they provide dimensional stability as...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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