High performance engineering plastics and additive for use in engineering plastics
The present invention relates to engineering plastics having a high flame retardancy and a good compound processability, where the engineering plastics comprises microsilica as a flame retardant additive and as a processing aid.
1. An engineering plastic consisting of:
plastic;
20 to 50% by weight of glass fibre;
8-50% by weight of microsilica, wherein the microsilica has a particle size of about 0.15 μm; and
a flame retardant additive,
wherein the engineering plastic has high flame retardancy and good compound processability.
2. An engineering plastic consisting of
plastic;
20 to 50% by weight of glass fibre, and
5-60% by weight of microsilica, wherein the microsilica has a particle size of about 0.15 μm;
and wherein the engineering plastic has high flame retardancy and good compound processability.
3. The engineering plastic of Claim 2 ,
wherein the plastic is either a polyamide or a copolymer of ethylene vinyl acetate.