• Plastic material needs lower melting temperature in extrude process, consume less energy.
• reduce 40% in weight compare to aluminum blade, save driven power，reduce skeleton load and minimize metal fatigue, prolong service life.
• Two materials compose blade, plastic contour and aluminum skeleton，the blade will not resonate. Most of broken blades were caused by metal fatigue at root position.
• No resonance plus lightweight will generate higher rpm, faster ground airflow and larger extend reach by equivalent power.
• Easy clean，no water stain left after water clean.
• blade color optional for long term buyers or large order.
• Blade Interconnect Grille will prevent blade from free fall, which substantially upgrade the safety and reliability criteria in industry.
• Nylon cord of Grille is lightweight and easy to knit, reduce the load and simplified the grille Installation.
* all of comparations based on same contour of blade.
• Main ingredient of blade contour is polycarbonate (PC), it is an engineering plastic of high performance-price ratio.
• PC is widely applied in mechanical and optics industry since its outstanding featuresin mechanical, heat-resisting, and anti-aging. such as glass window on aircraft, gearand crank axle on machine etc.
• Service life of PC is over ten years in interior application.
• Skeleton undertake strength and rigidity of blade on radial. it made of extrude aluminum, exactly same with aluminum blade. Compared with the latter, Curve down phenomenon on blade will ease in years application. As the skeleton bear less load,Cantilever load also declines.Working condition of skeleton is better than that of aluminum blades.
• The blade strength of transverse section partly be undertaken by PC, 4 vertical stiffeners in inner cavity are set to ensure the contour no twisted、deformed or broken.
Conclusion: Durability and reliability of Al-Pc Complex bladeis superior to aluminum blade.
Shell:polycarbonate (PC
Skeleton: aluminum 6016-T6
Assembling relation of plastic shell and skeleton
| Items | Al-Pc Complex blade | Extruded aluminum blade |
Melting temp | Plastic material melts in 330°C, lower than aluminum. Saving energy in manufacture process. | Aluminum melts temp. is over 660°C |
Weight / 7300 mm | Composite weight of Al-Pc Complex Blade is about 5.5 kg Only 60% of Al. blade, less power to drive. | Aluminum blade is over 8.8 kg |
Structure load | Total lightweights reduce the cantilever load and curve down phenomenon, it also decreases metal fatigue. Cut down structure failure risk. | Two additional vertical stiffeners were set to reinforce the stiffness. The vertical stiffeners can strengthen the rigidity, but at same time also increase cantilever load and deteriorate curve down phenomenon, |
Blade resonance | formed by two different materials. No blade resonance as plastic and aluminum have different resonance frequencies. | Made by single material and exists the risk of resonance |
Performance | Lightweight and no resonance allow in higher rpm, more aircirculating, higher air velocity, and larger extend reach. | |
Blade clean and color | plastic shell allows water clean and no water trace left. Option for custom-made colors | Water clean do not permit. |
Innovative safety advice | • Al-Pc Complex Blade • Blade Interconnect Grille • Blade Skeleton Interconnect Ring | • Blade Connection Plates • Steel rope inside Blade |
