Intermediate layer material and composite laminate
US8722191B2 · kind B2 · utility
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3Claims
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Key dates
| Filing date | Feb 27, 2007 |
| Grant date | May 13, 2014 |
| Priority date | — |
| Expiry date | Feb 25, 2029 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31515
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
There is provided an intermediate layer material including a curing type resin composition and a fiber base material, to be used to form an intermediate layer of a composite laminate, wherein a cured material obtained by curing the intermediate layer material at a temperature of 180° C. has such properties as (i) a planar linear expansion coefficient (α1) equal to or lower than 20 ppm/° C., in a range equal to or higher than 25° C. and equal to or lower than a glass transition temperature (Tg); and (ii) a Barcol hardness equal to or more than 40 and equal to or less than 65, at 25° C.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.