Uralac p3490

Example 2

The mixture was composed of 600 parts of Uralac® P3490 having T_g of 69° C., 45 parts of Araldite® PT-910 (Huntsman) having melting point (DSC, ISO 11357-1) 90-102° C., 15 parts of Resiflow PV 5 (Worlée-Chemie GmbH), 8 parts of Accelerator DT-3126 (Huntsman), 7 parts of Benzoin and 10 parts of short carbon fibers. The carbon fibers used had an average length of 60 μm and can be obtained under the product designation Tenax®-A HAT M100 (Toho Tenax Europe GmbH). All components were premixed in a high-speed mixer for 1 min and then extruded in a twin-screw ZSK-18 extruder at a screw speed of 400 rpm with a rear-zone temperature of 90° C. and a front-zone temperature of 100° C. In an alternative setting of the extruder, a temperature gradient of 40 to 100° C. and a cooling device for the feeding area was used. The compound obtained was then cooled down, granulated and fine ground to obtain a powder having a D50 of less than 100 μm. The powder can be used in a 3D printer, for example in a SLS laser sintering 3D-printing machine.

Example 2

The mixture was composed of 600 parts of Uralac® P3490, 45 parts of Araldite® PT-910 (Huntsman), 15 parts of Resiflow PV 5 (Worlée-Chemie GmbH), 8 parts of Accelerator DT-3126 (Huntsman), 7 parts of Benzoin and 10 parts of short carbon fibers. The carbon fibers used had an average length of 60 μm and can be obtained under the product designation Tenax®-A HAT M100 (Toho Tenax Europe GmbH). All components were premixed in a high-speed mixer for 1 min and then extruded in a twin-screw ZSK-18 extruder at a screw speed of 400 rpm with a rear-zone temperature of 90° C. and a front-zone temperature of 100° C. In an alternative setting of the extruder, a temperature gradient of 40 to 100° C. and a cooling device for the feeding area was used. The compound obtained was then cooled down, granulated and fine ground to obtain a powder having a D50 of less than 100 μm. The powder can be used in a SLS laser sintering 3D-printing machine.