Patent · US Expired

Method for fabrication of refractory composite tubing

US4963301A · kind A · utility

10Cited by
4References
15Claims
0Family size

Assignee

Inventors

Key dates

Filing dateJun 28, 1988
Grant dateOct 16, 1990
Priority date—
Expiry dateJun 28, 2008

Classification

  • Technology area (CPC C)Chemistry; Metallurgy
  • CPC primaryC04B2235/9607
  • WIPO fieldMaterials, metallurgy
  • WIPO sectorChemistry

Abstract

Reinforced composite tubes are formed by rolling a flat reinforcement fabric onto a cylindrical or conical mandrel under tension. By pre-impregnating the fabric with a suitable matrix precursor or by serving the individual threads of the fabric with a thermoplastic, the fabric may be compressed by applying heat and pressure during the rolling process. After rolling, the resulting prepreg is cured in a suitable vacuum bag, also under heat and pressure. The cured prepreg may then be converted by pyrolysis and densified by repeated impregnation and converting steps. The resulting composite tubes are substantially free from mechanical defects which would reduce their strength.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.