Low fiber-loading composites with hybridized fiber/matrix interface
US6069192A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 13, 1998 |
| Grant date | May 30, 2000 |
| Priority date | — |
| Expiry date | Oct 13, 2018 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L23/10
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
Disclosed are fiber-reinforced composites having untraditionally low fiber loading and a novel form of hybridized interface. Typical examples of fiber-matrix combinations capable of developing such interfaces include surface-phosphonylated ultrahigh molecular weight polyethylene (UHMW-PE) and polypropylene (PP) yarns (or fabric constructs) and epoxy resin, acrylic resin, and cement. For further improvement of the hybridized interface and the overall composite properties, the surface-phosphonylated fiber may be post-treated with reagents that will improve the abridging of the fibers to the matrix through physicochemically hybridized interfaces. Compared with composites having unmodified fiber, those based on modified ones, with or without post-treatment, exhibit a substantial increase in physicomechanical properties at exceptionally low fiber loading, ranging from about 0.1 to 35 percent by weight, preferably from about 0.1 to about 20 percent by weight, most preferably less than 10 percent by weight. Among these properties are maximum tensile strength, fracture toughness, and modulus.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.