| 摘要 |
Flame retardant fibre-matrix semifinished products include a polycarbonate as the thermoplastic matrix material and may be used in components subject to increased flame retardancy requirements, such as casing materials for electrical or electronic parts, IT equipment such as flatscreen monitors, notebooks, mobile telephones or tablet computers, fittings for shielding, inter alia, short-circuit induced arc flash in circuit breakers, and flame barriers in buildings, passenger vehicles, commercial vehicles and in shipping applications and in means of public transport. |
| 主权项 |
1. A fibre-matrix product having increased flame-retardancy, the fibre-matrix product comprising:
i) at least one fibrous material; and ii) a thermoplastic matrix comprising:
A) 10 to 97 wt % of at least one thermoplast from the group of polycarbonates, andB) 3 to 90 wt % of at least one of:
one or more phosphazenes of formula (I) andone or more phosphazenes of formula (II), where
R1, R2 are identical or different and represent alkyl, cycloalkyl, aryl or alkylaryl,R3, R4 are identical or different and represent alkyl, cycloalkyl, aryl or alkylaryl,R5 represents —N═P(OR3)3, —N═P(OR4)3, —N═P(O)OR3 or —N═P(O)OR4,R6 represents —N═P(OR3)4, —N═P(OR4)4, —N═P(O)(OR2)2 or —N═P(O)(OR4)2,a is an integer from 3 to 25, andb is an integer from 3 to 10 000, wherein the sum of the percentages by weight of components A) and B) in the thermoplastic matrix ii) always amounts to 100 and wherein the fibrous material i) is intermixed with the thermoplastic matrix ii) and a volume fraction of the fibrous material i) in the fibre-matrix product is 25 to 65 vol %. |
