English description below
- Co-ekstrudering ´skin-core´ struktur
- Fremragende lag vedhæftning
- Reducerer dysens slid
NexPA-CF25 er en fremragende kandidat til udskrivning af dele, der skal have tynde vægge og høje krav til mekaniske egenskaber. Det er én type 3D-printfilament med 25 % kulfiberindhold og en hudkernestruktur. Den ydre ´skind´ af filamentet er en modificeret harpiks med høj lagvedhæftningsstyrke, og den indre kerne er forstærket harpiks med et højt indhold af hakkede fibre. Udskrivning af filamenter drager fordel af den generelle laminære strøm af polymere væsker under ekstrudering og opretholder den stabile hud-kernestruktur, selv efter at filamentet passerer gennem dysen på printeren. Denne teknologi bidrager til den fremragende Z-akse mellemlagsadhæsion af FDM fiberforstærkede filamenter, fordi hovedlagets vedhæftning kommer fra den ydre skaltøjle uden fibre. I mellemtiden kan 25% hakket cabronfiberindhold forbedre de mekaniske egenskaber og varmebestandigheden af de trykte dele. Co-extrusion ‘skin-core’ structure Den nye generation af industrielle 3D-printfilamenter har en hudkernestruktur. Den ydre ´skin´ er en modificeret harpiks med høj lag-vedhæftning, og den indre kerne er forstærket harpiks med et højt indhold af hakkede fibre. Co-ekstruderings-skin-core-teknologien har kraftigt øget fiberindholdet, samtidig med at filamentets sejhed bevares og dermed forbedret de trykte deles mekaniske egenskaber og varmebestandighed. Excellent layer adhesion 3D-printfilamenterne har draget fordel af den generelle laminære strøm af polymere væsker under ekstruderingen og opretholder den stabile hud-kernestruktur, selv efter at filamentet passerer gennem printerens dyse. Blandt mange andre fiberforstærkede filamenter er vedhæftningstab i Z-aksen altid et almindeligt problem under udskrivning. Men for 3D-print filamenter kommer Z-akse mellemlagsadhæsion fra adhæsionen mellem harpiksen af den ydre skal, og dette kan helt undgå lagets adhæsionstab. Efter at være blevet ekstruderet gennem dysen opvarmes den indre kerne og de ydre lag af det ekstruderede filament derudover, smeltes og bindes sammen igen. På denne måde kan adhæsionen mellem det indre og det ydre lag nå det optimale niveau, og fibrene i den indre kerne kan effektivt modstå kraften fra z-aksens ydre lag harpiks. Med disse to fordele er Z-aksens mellemlagsadhæsion af endelige dele trykt med disse filamenter yderligere forbedret sammenlignet med dele trykt med rene harpiksfilamenter. Reducing nozzle abrasive wear Under ekstruderingsprocessen kan filamenterne i høj grad reducere sliddet på dysen. Materialet, der kommer i kontakt med dysens indervæg, er lavet af ren harpiks, hvilket i høj grad begrænser kontakten mellem forstærkningsfibrene og dysen. Samtidig kan den skin-core strukturerede filament også undgå kontakten mellem filamentets forstærkende fibre og ekstrudere eller halse, hvilket forlænger levetiden for hele 3D-printerens ekstruderingsdele. For mere information, se den downloadbare pdf-fil under produktmediefanen nedenfor.
- Co-extrusion ‘skin-core’ structure
- Excellent layer adhesion
- Reducing nozzle abrasive wear
NexPA-CF25 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% carbon 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. 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. Co-extrusion ‘skin-core’ structure The new generation of industrial 3D printing filament features a skin-core structure. The outer ´skin´ 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 The 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 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 these filaments is further improved compared to parts printed with pure resin filaments. Reducing nozzle abrasive wear During the extrusion process, the filaments 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. For more information, see the downloadable pdf file under the product media tab below.
