Intumescent flame-retardant coiled material for cables and intumescent flame-retardant cable
Assignee3M Innovative Properties Company
InventorsWei Zhou, Zheng Guan
Life of this patent
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Abstract
The present application provides an intumescent flame-retardant coiled material for cables and an intumescent flame-retardant cable. Specifically, the intumescent flame-retardant coiled material for cables comprises a thermal expansion layer and a combustible armor layer adjacent to the thermal expansion layer. The intumescent flame-retardant cable comprises a cable core; a thermal expansion layer adjacent to the cable core; and a combustible armor layer adjacent to the thermal expansion layer. The intumescent flame-retardant coiled material can be used for mounted and curved cables and can provide excellent flame-retardant performance while providing effective mechanical protection for cables.
Claims18
An intumescent flame-retardant coiled material for cables, the intumescent flame-retardant coiled material for cables comprising:
- a thermal expansion layer;
- and
- a combustible armor layer adjacent to the thermal expansion layer,
- wherein the thermal expansion layer is a phosphate thermal expansion layer, a melamine thermal expansion layer, a ceramic fiber thermal expansion layer, or an expandable graphite thermal expansion layer and, wherein the combustible armor layer is an organic fiber combustible armor layer or a knitted fiberglass layer impregnated with a polyurethane resin.
An intumescent flame-retardant cable, the intumescent flame-retardant cable comprising:
- a cable core;
- a thermal expansion layer adjacent to the cable core;
- and
- a combustible armor layer adjacent to the thermal expansion layer,
- wherein the thermal expansion layer is a phosphate thermal expansion layer, a melamine thermal expansion layer, a ceramic fiber thermal expansion layer, or an expandable graphite thermal expansion layer and, wherein the combustible armor layer is an organic fiber combustible armor layer or a knitted fiberglass layer impregnated with a polyurethane resin.
Dependencies are inferred from the claim text.