Method and apparatus for measuring viscous heating of viscoelastic materials
US6164818A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 21, 1999 |
| Grant date | Dec 26, 2000 |
| Priority date | — |
| Expiry date | Jan 21, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2203/0694
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Method and apparatus for measuring viscous heating/heat build-up of viscoelastic materials, such as rubber and polymer compounds. Temperature changes in the viscoelastic material are measured during application of a shearing force to the viscoelastic material. The shearing force is applied by rotating a second die plate relative to a first die plate, which remains stationary. Temperature changes in the viscoelastic material attributable to friction between the first die and an adjacent sealing ring are accounted for, and subtracted out of the final temperature values. The present invention provides an accurate, quantifiable, and repeatable measure of viscous heating/heat build-up of a viscoelastic material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.