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Title: Dry powder mixes comprising phase change materials

Free flowing, conformable powder-like mix of silica particles and a phase change material (p.c.m.) is disclosed. The silica particles have a critical size of about 7.times.10.sup.-3 to about 7.times.10.sup.-2 microns and the pcm must be added to the silica in an amount of 80 wt. % or less pcm per combined weight of silica and pcm. The powder-like mix can be used in tableware items, medical wraps, tree wraps, garments, quilts and blankets, and in cementitious compositions of the type in which it is beneficial to use a pcm material. The silica-pcm mix can also be admixed with soil to provide a soil warming effect and placed about a tree, flower, or shrub.
Inventors:
 [1]
  1. (Dayton, OH)
Issue Date:
OSTI Identifier:
868250
Assignee:
University of Dayton (Dayton, OH) OAK
Patent Number(s):
US 5106520
Contract Number:
FG03-86SF16308
Research Org:
University of Dayton (Dayton, OH)
Country of Publication:
United States
Language:
English
Subject:
dry; powder; mixes; comprising; phase; change; materials; free; flowing; conformable; powder-like; mix; silica; particles; material; disclosed; critical; size; times; 10; -3; -2; microns; pcm; added; amount; 80; wt; combined; weight; tableware; items; medical; wraps; tree; garments; quilts; blankets; cementitious; compositions; type; beneficial; silica-pcm; admixed; soil; provide; warming; effect; placed; flower; shrub; mixes comprising; tree wraps; powder mixes; comprising phase; combined weight; medical wraps; tableware items; critical size; conformable powder-like; free flowing; cementitious compositions; change materials; change material; phase change; silica particles; dry powder; powder-like mix; soil warming; pcm material; silica-pcm mix; free flow; warming effect; cementitious composition; /252/428/524/