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The effect of permanent press resin of the dimethylol ethelene urea (DMEU) type on 100% cotton fabric resistivity, as measured on a guarded hot plate, was studied. Increased add-on reduced average air pore size and increased solid content. A reduction in fabric thickness and an increase in actual contact area with a solid surface were also observed. A maximum of resistivity was obtained for an add-on of 4.4%. Further increase in add-on caused a reduction in resistivity as bulk density increased. These results were compared with theoretical models of heat transfer through randomly oriented fiber assemblies.
protective clothing, fabrics, thermal resistivity, resin treatment, heat transfer, comfort
Lecturer, Shenkar College of Textile Technology and Fashion, Ramat-Gan,