Glass fiber separators for lead-acid batteries
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United States of America Patent
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Dec 17, 2002
Grant Date -
Oct 3, 2002
app pub date -
Oct 9, 2001
filing date -
Jul 1, 1996
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A glass fiber separator material is disclosed. The separator is composed of a mass of intermeshed glass fibers substantially all of which have a fiber diameter not greater than about 20 .mu.m, and at least 5 percent w/w of which have a fiber diameter less than 1 .mu.m, and, distributed through the glass fibers, and from 0.2 percent w/w to 20 percent w/w of cellulose fibrils. The fibrils are from a slurry having a Canadian freeness sufficiently low that the separator material has a tensile strength greater than an otherwise identical separator where glass fibers having an average diameter greater than 1 .mu.m replace the cellulose fibrils.
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