Method of preparation of removable syntactic foam
Abstract
Easily removable, environmentally safe, low-density, syntactic foams are disclosed which are prepared by mixing insoluble microballoons with a solution of water and/or alcohol-soluble polymer to produce a pourable slurry, optionally vacuum filtering the slurry in varying degrees to remove unwanted solvent and solute polymer, and drying to remove residual solvent. The properties of the foams can be controlled by the concentration and physical properties of the polymer, and by the size and properties of the microballoons. The suggested solute polymers are non-toxic and soluble in environmentally safe solvents such as water or low-molecular weight alcohols. The syntactic foams produced by this process are particularly useful in those applications where ease of removability is beneficial, and could find use in packaging recoverable electronic components, in drilling and mining applications, in building trades, in art works, in the entertainment industry for special effects, in manufacturing as temporary fixtures, in agriculture as temporary supports and containers and for delivery of fertilizer, in medicine as casts and splints, as temporary thermal barriers, as temporary protective covers for fragile objects, as filters for particulate matter, which matter may be easily recovered upon exposure to a solvent, as in-situ valves (for one-time use) which go frommore »
- Inventors:
-
- (Albuquerque, NM)
- Albuquerque, NM
- Issue Date:
- Research Org.:
- AT&T
- OSTI Identifier:
- 869973
- Patent Number(s):
- 5432205
- Assignee:
- United States of America as represented by United States (Washington, DC)
- Patent Classifications (CPCs):
-
C - CHEMISTRY C08 - ORGANIC MACROMOLECULAR COMPOUNDS C08J - WORKING-UP
- DOE Contract Number:
- AC04-76DP00789
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- method; preparation; removable; syntactic; foam; easily; environmentally; safe; low-density; foams; disclosed; prepared; mixing; insoluble; microballoons; solution; water; alcohol-soluble; polymer; produce; pourable; slurry; optionally; vacuum; filtering; varying; degrees; remove; unwanted; solvent; solute; drying; residual; properties; controlled; concentration; physical; size; suggested; polymers; non-toxic; soluble; solvents; low-molecular; weight; alcohols; produced; process; particularly; useful; applications; ease; removability; beneficial; packaging; recoverable; electronic; components; drilling; mining; building; trades; entertainment; industry; special; effects; manufacturing; temporary; fixtures; agriculture; supports; containers; delivery; fertilizer; medicine; casts; splints; thermal; barriers; protective; covers; fragile; filters; particulate; matter; recovered; exposure; in-situ; valves; one-time; maximum; minimum; impedance; flows; automatic; closing; spring-loaded; mechanical; switches; remove residual; environmentally safe; particulate matter; physical properties; thermal barrier; particularly useful; molecular weight; electronic components; soluble polymer; protective cover; remove unwanted; syntactic foam; foams produced; mining applications; mechanical switch; soluble poly; /521/523/
Citation Formats
Arnold, Jr., Charles, Derzon, Dora K, Nelson, Jill S, and Rand, Peter B. Method of preparation of removable syntactic foam. United States: N. p., 1995.
Web.
Arnold, Jr., Charles, Derzon, Dora K, Nelson, Jill S, & Rand, Peter B. Method of preparation of removable syntactic foam. United States.
Arnold, Jr., Charles, Derzon, Dora K, Nelson, Jill S, and Rand, Peter B. Sun .
"Method of preparation of removable syntactic foam". United States. https://www.osti.gov/servlets/purl/869973.
@article{osti_869973,
title = {Method of preparation of removable syntactic foam},
author = {Arnold, Jr., Charles and Derzon, Dora K and Nelson, Jill S and Rand, Peter B},
abstractNote = {Easily removable, environmentally safe, low-density, syntactic foams are disclosed which are prepared by mixing insoluble microballoons with a solution of water and/or alcohol-soluble polymer to produce a pourable slurry, optionally vacuum filtering the slurry in varying degrees to remove unwanted solvent and solute polymer, and drying to remove residual solvent. The properties of the foams can be controlled by the concentration and physical properties of the polymer, and by the size and properties of the microballoons. The suggested solute polymers are non-toxic and soluble in environmentally safe solvents such as water or low-molecular weight alcohols. The syntactic foams produced by this process are particularly useful in those applications where ease of removability is beneficial, and could find use in packaging recoverable electronic components, in drilling and mining applications, in building trades, in art works, in the entertainment industry for special effects, in manufacturing as temporary fixtures, in agriculture as temporary supports and containers and for delivery of fertilizer, in medicine as casts and splints, as temporary thermal barriers, as temporary protective covers for fragile objects, as filters for particulate matter, which matter may be easily recovered upon exposure to a solvent, as in-situ valves (for one-time use) which go from maximum to minimum impedance when solvent flows through, and for the automatic opening or closing of spring-loaded, mechanical switches upon exposure to a solvent, among other applications.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Sun Jan 01 00:00:00 EST 1995},
month = {Sun Jan 01 00:00:00 EST 1995}
}
Works referenced in this record:
Syntactic Foams I. Preparation, Structure and Properties
journal, July 1980
- Puterman, M.; Narkis, M.; Kenig, S.
- Journal of Cellular Plastics, Vol. 16, Issue 4
Polystyrene-Urethane Composite Foam for Crash Padding Applications
journal, September 1973
- Brooks, J. D.; Rey, L. G.
- Journal of Cellular Plastics, Vol. 9, Issue 5