FusCoating™ NexPA-GF25 is an outstanding candidate for printing parts that need to have thin walls and high mechanical property requirements. It is one type of 3D printing filament with 25% Glass fiber content and a skin-core structure. The outer ‘skin’ of the filament is a modified resin with high layer adhesion strength, and the inner core is reinforced resin containing high chopped fiber content. FusCoating™ 3D printing filaments take advantage of the general laminar flow of polymeric fluids during extrusion and maintain the stable skin-core structure even after the filament passes through the nozzle of the printer. This technology contributes to the excellent Z-axis interlayer adhesion of FDM fiber-reinforced filaments because the major layer adhesion comes from the outer shell rein without fibers. Meanwhile, 25% chopped cabron fiber content can improve the mechanical properties and heat resistance of the printed parts.
Product highlights
Co-extrusion ‘skin-core’ structure
FusRock® invented a new generation of industrial 3D printing filament with a skin-core structurer by using multi-layer co-extrusion technology. The outer ‘skin’ of the filament is a modified resin with high layer adhesion, and the inner core is reinforced resin containing high chopped fiber content. The co-extrusion skin-core technology has greatly increased fiber content while maintaining the toughness of the filament and thus improved the mechanical properties and heat resistance of the printed parts.
Excellent layer adhesion
FusCoating™ 3D printing filaments have taken advantage of the general laminar flow of polymeric fluids during the extrusion and maintain the stable skin-core structure even after the filament passes through the nozzle of the printer. Among many other fiber-reinforced filaments, Z-axis layer adhesion loss is always a common issue during printing. However, for FusCoating™ 3D printing filaments, the Z-axis interlayer adhesion comes from the adhesion between the resin of the outer shell and this can completely avoid the layer adhesion loss. In addition, after being extruded through the nozzle, the inner core and outer layers of the extruded filament are heated, melted and bonded together again. In this way, the adhesion between the inner and outer layers can reach the optimal level and the fibers of the inner core can effectively withstand the force from the z-axis outer layer resin. With these two advantages, the Z-axis interlayer adhesion of final parts printed with FusCoating™ is further improved compared to parts printed with pure resin filaments.
Reducing nozzle abrasive wear
During the extrusion process, the FusCoating™ can greatly reduce the wear of the nozzle. The material that contacts the inner wall of the nozzle is made of pure resin which greatly limits the contact between the reinforcing fibers and the nozzle. At the same time, the skin-core structured filament can also avoid the contact between the reinforcing fibers of the filament and extruders or throats, which prolongs the service life of the entire extrusion parts of the 3D printer.
Product introduction
FusCoating™ NexPA-GF25 is an outstanding candidate for printing parts that need to have thin walls and high mechanical property requirements. It is one type of 3D printing filament with 25% Glass fiber content and a skin-core structure. The outer ‘skin’ of the filament is a modified resin with high layer adhesion strength, and the inner core is reinforced resin containing high chopped fiber content. FusCoating™ 3D printing filaments take advantage of the general laminar flow of polymeric fluids during extrusion and maintain the stable skin-core structure even after the filament passes through the nozzle of the printer. This technology contributes to the excellent Z-axis interlayer adhesion of FDM fiber-reinforced filaments because the major layer adhesion comes from the outer shell rein without fibers. Meanwhile, 25% chopped cabron fiber content can improve the mechanical properties and heat resistance of the printed parts.
Product details
| Parameter | Value / range |
|---|---|
| Color | Natural |
| Filament Ø | 1.75 mm |
| Net weight | 2.5 / 3 kg |
Material properties
Physical properties
| Property | Test method | Typical value |
|---|---|---|
| Density | ISO 1183 | 1.29 g/cm³ |
| Water absorption | ISO 62: Method 1 | 1.99 % |
| Melting temperature | ISO 11357 | 237 °C |
| Melt index | - | 300 g/10min |
Thermal properties
| Property | Test method | Unit | Unannealed | Annealed | After annealing, saturated moisture treatment |
|---|---|---|---|---|---|
| HDT A | ISO 75: Method A (1.80 MPa) | °C | 79.2 | 118.0 | 96.9 |
| HDT B | ISO 75: Method B (0.45 MPa) | °C | 86.0 | 195.5 | 195.2 |
Mechanical properties
| Property | Test method | Unit | Unannealed | Annealed | After annealing, saturated moisture treatment |
|---|---|---|---|---|---|
| Tensile Strength XY | ISO527 | MPa | 96.82 ± 1.07 | 105.01 ± 1.14 | 72.12 ± 0.83 |
| Tensile Modulus XY | ISO527 | MPa | 5400.57 ± 227.21 | 5729.78 ± 301.68 | 4587.29 ± 206.31 |
| Elongation at Break XY | ISO527 | % | 2.92 ± 0.13 | 2.41 ± 0.05 | 6.48 ± 0.38 |
| Flexural Strength XY | ISO178 | MPa | 161.99 ± 2.39 | 168.20 ± 4.76 | 102.64 ± 1.18 |
| Flexural Modulus XY | ISO178 | MPa | 5402.49 ± 123.21 | 5957.97 ± 95.66 | 3228.36 ± 252.82 |
| Notched Impact XY | ISO179 | kJ/m² | 12.55 ± 0.86 | 7.59 ± 0.81 | 22.02 ± 1.47 |
| Tensile Strength Z | ISO527 | MPa | 65.40 ± 2.99 | - | - |
| Tensile Modulus Z | ISO527 | MPa | 4150.79 ± 80.04 | - | - |
| Elongation at Break Z | ISO527 | % | 1.90 ± 0.15 | - | - |
Printed specimen parameters:试样打印参数：喷嘴温度340℃，底板加热80℃，打印速度45mm/s，填充率100%，填充角度±45°
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