Fire-resistant wire/cable
The invention discloses a fire-resistant wire or cable comprising a conductor wiring and a fire-resistant organic/inorganic composite as an insulation layer or an outer sheath. The organic/inorganic composite comprises an organic component of a polymer, oligomer, or copolymer having a first reactive functional group; and inorganic particles having a second reactive functional groups. The inorganic particles are chemically bonded to the organic component via a reaction between the first and the second reactive functional groups.
1. A fire-resistant wire or cable, comprising:
a conductor wiring; and
an organic/inorganic composite as an insulation layer or an outer sheath layer; comprising:
30-70% by weight of an organic component having a first reactive functional group of isocyanate, the organic component comprising polymer, copolymer, or oligomer; and
70-30% by weight of flame retardant inorganic particles having a second reactive functional group of hydroxyl;
wherein the flame retardant inorganic particles are chemically bonded to the organic component via a reaction between the first and second reactive functional groups,
and wherein the flame retardant inorganic particles are metal hydroxide.
2. The fire-resistant wire or cable as claimed in claim 1 , wherein the organic component comprises polyurethane, or polyolefin copolymer having isocyanate groups.
3. The fire-resistant wire or cable as claimed in claim 1 , wherein the metal hydroxide comprises Al(OH) 3 or Mg(OH) 2 .
4. The fire-resistant wire or cable as claimed in claim 1 , wherein the organic/inorganic composite is coated on the conductor wiring by dipping or extrusion.
5. The fire-resistant wire or cable as claimed in claim 1 , wherein the fire-resistant wire or cable has a sufficient flame retardant property to pass the UL 1581 Vertical Wire Flame Test VW-1.