Reinforcing fibrous material
US5001008A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 21, 1988 |
| Grant date | Mar 19, 1991 |
| Priority date | — |
| Expiry date | Jul 21, 2008 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31663
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
Disclosed is a reinforcing fibrous material having an improved adhesion, which consists essentially of a surface-treated, molecularly oriented, silane-crosslinked ultra-high-molecular-weight polyethylene fiber, wherein when the measurement is conducted under restraint conditions by using a differential scanning calorimeter, the crosslinked polyethylene fiber has at least two crystal melting peaks (Tp) at temperatures higher by at least 10.degree. C. than the inherent crystal melting temperature (Tm) of the ultra-high-molecular-weight polyethylene determined as the main peak at the time of the second temperature elevation, the heat of fusion based on these crystal melting peaks (Tp) is at least 50% of the whole heat of fusion, and the sum of heat of fusion of high-temperature side peaks (Tp1) at temperatures in the range of from (TM+35).degree. C. to (Tm+120).degree. C. is at least 5% of the whole heat of fusion, and wherein the crosslinked polyethylene fiber has a surface containing at least 8 carbon atoms, especially at least oxygen atoms, per 100 oxygen atoms, as determined by the electron spectroscopy for chemical analysis.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.