A foamed insulation for cryogenic pipe lines comprised of a pair of preformed, semicircular foamed insulation half-sections is described. The faying surfaces are coated with a polyurethane adhesive and bonded together about the pipe. The faying surfaces of the pipe and inner radii of the half-sections are not bonded together. The ends of the foamed insulation half-sections are tapered and a knitted outer material is stretched over the pipe, the tapered ends, and the body of the mated half- sections and extends over the pipe beyond each tapered end. A polyurethane resin coating is applied to the knitted outer material to form a seal and prevent air circulation through the half-sections and provide abrasion resistance. A process of insulating a cryogenic pipe line and a process for forming the preformed insulation half- sections is also described.

  • Supplemental Notes:
    • Government-owned invention available for licensing.
  • Corporate Authors:

    National Aeronautics and Space Administration

    Lyndon B. Johnson Space Center
    Houston, TX  United States  77058
  • Authors:
    • Lerma, G
  • Publication Date: 1975-12-23

Media Info

  • Pagination: 14 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00136287
  • Record Type: Publication
  • Source Agency: National Technical Information Service
  • Report/Paper Numbers: N76-16245/2 Pat. Appl.
  • Contract Numbers: NAS9-14000
  • Files: TRIS
  • Created Date: Jul 13 1976 12:00AM