| 摘要 |
The present invention relates to reinforced polyamide molding materials which can be prepared from a polyamide blend and, for example, by compounding with cut fibers or continuous filaments on twin-screw extruders and have mechanical properties which are usually not compatible with one another, namely a combination of exceptionally high rigidity and strength and at the same time good toughness. Furthermore, a high heat distortion temperature (HDT) is achieved according to the invention.;The thermoplastic polyamide molding materials according to the invention are suitable for the production of moldings or other semifinished products or finished articles, which can be produced, for example, by extrusion, injection molding, direct methods or direct compounding, in which the compounded polyamide molding material is processed directly by injection molding, or other deformation techniques. |
| 主权项 |
1. Very rigid and simultaneously tough, reinforced polyamide moulding material, with heat distortion temperature values HDT/A (1.8 MPa) (measured according to ISO 75) of more than 242° C., and with a polyamide matrix containing a blend of the following components:
(A) polyamide 66, (B) copolyamide, composed of (b1) 70 to 30 parts by weight of units, which are derived from terephthalic acid (T) in combination with hexamethylenediamine (6), (b2) 30 to 70 parts by weight of units, which are derived from adipic acid in combination with hexamethylenediamine, the parts by weight of the components (31) and (b2) together giving 100 parts by weight, and a filler component containing a mixture of: (C) glass fibres and (D) carbon fibres, the percentages by weight of the components (A) to (D) together giving 100% and the components (A), (B), (C), and (D) fulfilling the following conditions:
(A)+(B): 20 to 60% by weight,weight ratio (A)/(B): 50/50 to 95/5,(C)+(D): 66 to 74% by weight,weight ratio (C)/(D): 80/20 to 95/5, wherein the polymeric components of said reinforced polyamide moulding material comprises predominantly or entirely components (A) and (B), and the moulding material has a tensile modulus of elasticity of more than 25,500 Mpa. |
