Rail interior compliant thermoplastic composite
AssigneeSabic Global Technologies B.V.
InventorsGoran Solenicki, Joris Wismans, Sandeep Chandrakant Kulkarni, Rein Mollerus Faber, Erik Schwartz
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Abstract
Fire-retardant composites, methods of making fire-retardant composites, and use thereof are described. A fire-retardant composite can include at least two fire-retardant laminates, and a porous thermoplastic core material disposed between the at least two fire-retardant laminates. Each laminate can have one or more ply, each of the plies can include a plurality of fibers in a thermoplastic polymer matrix that includes a fire-retardant composition. The fire-retardant composite meets European fire-retardant standards for rail transportation.
Claims20
A fire-retardant composite comprising:
- (a) a porous core material comprising a first thermoplastic polymer comprising polyethylene terephthalate, a fire-retardant polypropylene, a polycarbonate, a polyimide, a polyethersulfone, a polyurethane, or a poly(phenylene ether)/styrene blend, or a blend thereof;
- (b) a first fire-retardant laminate disposed on a first side of the porous core, the first fire-retardant laminate comprising at least one ply, the ply comprising:
- (i) at least 15 wt. %, based on the total weight of the ply, of a second thermoplastic polymer comprising a polypropylene, a polycarbonate, or a polyimide, or a blend thereof;
- (ii) 4 to 10 wt. %, based on the total weight of the ply, a fire-retardant composition comprising a metal oxide and a nitrogen-phosphorous compound;
- (iii) 50 to 80 wt. %, based on the total weight of the ply, of fibers;
- and
- (iv) 0.01 to 2 wt. %, based on the total weight of the ply, of a coupling agent;
- and
- (c) a second laminate disposed on a side opposite the first side of the core, wherein the second laminate is the same or different than the first laminate.
A fire-retardant composite comprising
- (a) a porous core comprising a polyethylene terephthalate foam;
- (b) a first fire-retardant laminate comprising one or more plies, at least one ply comprising:
- (i) at least 15 wt. %, based on the total weight of the ply, of polypropylene;
- (ii) 4 to 10 wt. %, based on the total weight of the ply, of a fire-retardant composition comprising zinc oxide and piperazine pyrophosphate;
- (iii) 50 to 80 wt. %, based on the total weight of the ply, of glass fibers;
- and
- (iv) 0.01 to 2 wt. %, based on the total weight of the ply, of a coupling agent;
- (c) optionally, a second laminate disposed on a side opposite the first side of the core, wherein the second laminate is the same or different than the first laminate;
- and
- (d) at least one adherent layer between the first laminate and the core, the optional second laminate and the core, or both.
A fire-retardant laminate comprising one or more ply, at least one ply comprising:
- (i) at least 15 wt. %, based on the total weight of the ply, of a thermoplastic polymer matrix of a polypropylene, a polycarbonate, or a polyimide, or a blend thereof;
- (ii) 4 to 10 wt. %, based on the total weight of the ply, of a fire-retardant composition comprising a metal oxide and a nitrogen-phosphorous compound;
- (iii) 50 to 80 wt. %, based on the total weight of the ply, of fibers;
- and
- (iv) 0.01 to 2 wt. %, based on the total weight of the ply, of a coupling agent.
Dependencies are inferred from the claim text.