| 摘要 |
The invention relates to thermally conductive thermoplastic compositions with balanced processing capacity, i.e. with a balanced proportion of melt volume flow rate to heat distortion resistance, comprising a thermoplastic, an expanded graphite, at least one phosphorus compound, and also ethylene/alkyl (meth)acrylate copolymer. |
| 主权项 |
1. A composition comprising
A) 20.0 to 80.49 wt % of polycarbonate, B) 15.0 to 60.0 wt % of expanded graphite, the D(0.5) of the graphite, determined by sieve analysis according to DIN 51938, being <1.2 mm, C) 4.5 to 10 wt % of at least one phosphorus compound of the general formula (V) in whichR1, R2, R3 and R4 independently of one another are C1- to C8-alkyl, optionally halogenated and in each case branched or unbranched, and/or C5- to C6-cycloalkyl, C6- to C20-aryl or C7- to C12-aralkyl, optionally substituted by a branched or unbranched alkyl and/or halogen,n independently at each occurrence is 0 or 1,q is an integer from 0 to 30,X is a monocyclic or polycyclic aromatic radical having 6 to 30 C atoms or is a linear or branched aliphatic radical having 2 to 30 C atoms, optionally substituted or unsubstituted, bridged or unbridged; D) 0.01 to 5.0 wt % of at least one ethylene/alkyl (meth)acrylate copolymer, E) optionally at least one further polymer additive, selected from the group consisting of heat stabilizers, flame retardants other than component C, antistatic agents, colorants, pigments, mould release agents, UV absorbers, IR absorbers and fillers, selected from the group of chalk, quartz powder, titanium dioxide, silicates, aluminosilicates, aluminium oxide, silica, magnesium hydroxide and aluminium hydroxide,
with components A) to E) adding up to 100 wt %. |
