PET-CF

PET-CF is a high-performance engineering material reinforced with carbon fibers in a PET base, offering significant advantages over standard PETG: 1) Mechanical properties: Tensile strength 72MPa (PETG ~50MPa), tensile modulus 5730MPa (PETG ~2100MPa), over 60% higher rigidity; 2) Heat resistance: HDT 120℃ (PETG ~70℃), approximately 40℃ higher temperature resistance; 3) Dimensional stability: Carbon fibers effectively inhibit shrinkage and warping, maintaining high precision even for large parts; 4) Water absorption: Saturated water absorption only 0.5%, better than PETG. Selection advice: Choose PET-CF for industrial parts requiring high strength, rigidity and heat resistance; choose PETG for general purpose and prototyping to reduce cost and printing difficulty.

PET-CF printing requires strict control of the following parameters for optimal results: 1) Drying: Thorough drying before printing, 80-100℃ for 6-8 hours, to remove moisture and avoid bubbles and strength loss; 2) Nozzle temperature: 280-320℃, recommended around 300℃, too low causes poor interlayer adhesion, too high causes carbonization; 3) Bed temperature: 60-80℃, ensures first layer adhesion and reduces warping; 4) Nozzle selection: Must use hardened steel, ruby or tungsten carbide nozzle, standard brass nozzles will be quickly worn by carbon fibers; 5) Print speed: 30-120mm/s, recommended below 60mm/s to ensure interlayer bonding; 6) Cooling fan: OFF, avoid rapid cooling causing interlayer separation; 7) Print bed: Use specialized glue or PEI sheet for enhanced adhesion.

PET-CF is compatible with all CreatBot high-temperature industrial 3D printers, recommended models include: 1) D400 HS: Full constant temperature chamber, nozzle up to 320℃, best for printing large high-strength parts like PET-CF; 2) : Nozzle up to 300℃, constant temperature chamber, suitable for medium-sized parts; 3) D600 Pro3 HS: Large format printing, constant temperature chamber, suitable for large industrial parts. Prerequisites for using PET-CF: Nozzle temperature must reach above 280℃, have constant temperature chamber (to reduce warping), high-temperature bed function. Not recommended to use desktop printers for PET-CF, insufficient temperature and chamber control will cause print failures.

PET-CF has a saturated water absorption of only 0.5%, much lower than standard PETG (~0.8%) and PA (~3-8%), which is one of the advantages brought by carbon fiber reinforcement. Proper storage methods: 1) Unopened material: Store directly in a dry, cool place, avoid direct sunlight; 2) Opened material: Use sealed bags or dry boxes for storage, desiccant recommended; 3) Pre-printing treatment: Even if the material looks dry, drying at 80-100℃ for 6-8 hours before printing is still recommended to fully ensure best print quality; 4) Printed parts: Sealed storage or use in dry environments is recommended, although PET-CF has low water absorption, long-term exposure in high-humidity environments will still affect its mechanical properties.

PET-CF is suitable for printing various industrial-grade parts, typical applications include: 1) Structural parts: Mechanical brackets, robot components, drone frames and other parts requiring high strength and rigidity; 2) Automotive parts: Under-hood components, sensor brackets, electrical housings and other high-temperature resistant parts; 3) Industrial equipment: Equipment housings, protective covers, tool panels, etc.; 4) Tooling fixtures: Production line fixtures, inspection gauges, positioning fixtures, etc.; 5) Electrical insulation: Electrical junction boxes, insulation brackets, etc. (PET-CF has certain insulation properties); 6) Metal replacement: In scenarios where rigidity requirements are not extremely high, can replace aluminum alloy and other metal parts for weight reduction. Especially suitable for applications requiring high strength, heat resistance, dimensional stability and lightweight.

PET-CF has excellent heat resistance: 1) Heat Deflection Temperature (HDT): 120℃ (tested at 0.45MPa), can operate stably below 100℃ for long periods; 2) Short-term temperature resistance: Can withstand short-term high temperatures above 150℃ without significant deformation; 3) Compared to PETG: Approximately 40℃ higher temperature resistance (PETG ~70℃); 4) Compared to ABS: Approximately 50℃ higher temperature resistance (ABS ~78℃); 5) Applications: Suitable for under-hood automotive, industrial equipment, electrical components and other high-temperature environments. Note: Although PET-CF has excellent heat resistance, in sustained high-temperature environments (>100℃) for long-term use, annealing treatment is recommended to eliminate internal stress and ensure dimensional stability.