High temperature-resistant fibrous silicon dioxide material

Details High temperature-resistant fibrous silicon dioxide material High temperature-resistant fibrous silicon dioxide material

1987-09-09

1988-11-22

Capella, Steven

Aeronautics and astronautics

Spacecraft

Spacecraft formation, orbit, or interplanetary path

501 4, 501 95, 501133, B64G 158, C04B 3514

Patent

active

047860170

ABSTRACT:
Fibrous silicon dioxide material that is resistant to high temperatures, particularly in the form of mats or plates, is produced by dry-spinning water glass into water glass fibers, the water glass fibers being then transformed into silica fibers by treatment with aqueous acid or salt solutions that contain hydrogen ions. The silica fibers are thereupon treated with an agent that accelerates the formation of cristobalite from amorphous silica. Such agents include, in particular, alkali hydrogen phosphates, sodium acetate and solium chloride. The fibers are dried and dehydrated at temperatures above 600.degree. C., particularly between 950.degree. C. and 1050.degree. C., before or after treatment with the accelerating agent. There dehydration occurs after such treatment, the fibers are subsequently subjected to thermal aftertreatment. When subjected to 1500.degree. C. temperatures, the material thus obtained generally shrinks by less than 3%; it has very little tendency to become brittle and is particularly well suited for the fabrication of high temperature insulation material.

REFERENCES:
patent: 3821070 (1974-06-01), Mansmann et al.
patent: 3944702 (1976-03-01), Clark
patent: 4050946 (1977-09-01), Li
patent: 4180409 (1979-12-01), Mansmann
patent: 4332600 (1982-06-01), Wegerhoff et al.
patent: 4332601 (1982-06-01), Wegerhoff et al.
patent: 4362768 (1982-12-01), Ritter, II
patent: 4395388 (1983-07-01), Kaduk
patent: 4471019 (1984-09-01), Wegerhoff et al.
Chemical and Engineering News, vol. 44, No. 5, p. 32, Jan. 31, 1966.

Affiliated with

Also associated with

Rating

High temperature-resistant fibrous silicon dioxide material does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with High temperature-resistant fibrous silicon dioxide material, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and High temperature-resistant fibrous silicon dioxide material will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-430613