21-01-2016 дата публикации
Номер: US20160019997A1
Принадлежит:
The present disclosure is directed to laser-markable insulation material and cable or wire assemblies containing such insulation material. In certain embodiments, the laser-markable insulation material can include a fluoropolymer and an inorganic laser-markable pigment. The pigment can have a mean crystal size in a range of about 0.4 microns to about 2 microns and/or a median particle size (d) in a range of about 0.45 microns to about 2 microns. The insulation material can exhibit improved initial and heat-aged contrast ratios without diminishing the ability of a cable or wire containing the insulation material to meet industry standards for electric-arc tracking and propagation resistance. 1. A laser-markable insulation material comprising:a. a polymer material comprising a fluoropolymer; and{'sub': '50', 'b. an inorganic laser-markable pigment having a mean crystal size in a range of about 0.4 microns to about 2 microns and/or a median particle size (d) in a range of about 0.45 microns to about 2 microns.'}2. A laser-markable insulation material comprising:a. a polymer material comprising a non-melt-processable fluoropolymer; andb. an inorganic laser-markable pigment having a ratio of average particle size to average crystal size of no greater than about 2:1.3. A laser-markable insulation material comprising:a. a polymer material comprising a fluoropolymer; andb. an inorganic laser-markable pigment [{'b': '1', 'i. an initial contrast ratio of at least about 55% as measured according to Contrast Ratio Sample Test Construction ; and/or'}, {'b': '1', 'ii. a heat-aged contrast ratio of at least about 42% after aging for 168 hours at a temperature in the range of 290 degrees Celsius to 310 degrees Celsius as measured according to Contrast Ratio Sample Test Construction .'}], 'c. wherein the insulation material has4. The laser-markable insulation material of claim 1 , wherein an insulated wire containing the laser-markable insulation material is resistant to wet ...
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