| 摘要 |
PROBLEM TO BE SOLVED: To provide a flame-retardant resin laminate having better flame retardancy than a flame-retardant resin monolayer containing a flame retardant uniformly, even when the laminate contains the same kind of flame retardant but in a less amount.SOLUTION: Provided is a flame-retardant resin laminate comprising constituent units 1 piled together and unified, the unit 1 comprising at least two laminated layers of flame retardant-containing thermoplastic resin layers 11 and 12, wherein kinds or combination of flame retardants contained in the thermoplastic resin layers of the constituent unit 1 are different depending on the thermoplastic resin layer. Because a combustion cycle is different depending on the thermoplastic resin layers 11 and 12 of the constituent unit 1, burning is inhibited due to inhibition of heat transfer and delay of diffusion of decomposed gas at an interface of every layer and burning is inhibited due to inhibition of heat transfer by a heat insulation layer generated by interfacial delamination, flame retardancy is more improved compared to a flame-retardant resin monolayer even when a content of the flame retardant is less than in the flame-retardant resin monolayer (the monolayer uniformly containing two or more kinds of flame retardants). |
