Nano fiber electrospinning unit with two dual channel syringe pumpse

The NFES-043C Electro-spinning equipment presents a sophisticated design with dual syringe pumps strategically positioned on either side of the rotating collector drum. This innovative configuration allows for customizable distances between the syringe and drum, enhancing the production efficiency of nano fibers. The syringe pumps boast versatile adjustments in speed, direction, travel, and dispensing rate, providing flexibility for diverse applications. A distinctive feature is the simultaneous spinning capability for two different materials, broadening the scope of potential uses. User-friendly attributes and safety precautions are integrated into the equipment, including cabin heating capabilities of up to 45℃ through a 1000-watt coil heater. Safety measures include a Residual Charge Discharge Stick for static removal and a safety switch deactivating the high-voltage power supply upon door opening. Enhanced visibility is ensured with LED cabin lighting and backlights, facilitating observation of needle tips and the electrospinning process. Dual functionality is provided by an exhaust fan, aiding solvent vaporization during operation and cooling the equipment post-spinning. An emergency stop button on the control panel ensures prompt halting in case of emergencies.

The equipment incorporates a coaxial spinneret, a standout feature enabling the production of both hollow and core/sheath nanofibers. This technology allows for the fusion of different polymer characteristics into a single fiber, expanding its versatility. A graduation scale on the granite surface aids users in achieving consistent results by marking the positions of the syringe pump and target. User-friendly software enables PC interfacing for the regulation and control of various parameters such as rotating mandrel speed, spin duration, syringe pump flow rate, and XY target movement. Diverse collector options, including rotating mandrel targets, a stationary target, and a reciprocating XY target, add to the system's versatility. The system hood features essential elements like an exhaust fan, halogen lighting, and a transparent door for real-time monitoring of the electrospinning process. Furthermore, a built-in Arc Protection Circuit enhances safety during operation.

The specifications of the nano fiber electrospinning unit, designated NFES-040, encompass a range of key features and components. The high-voltage power supply offers an output voltage range from 0 to 30kV, with a maximum current capacity of 0.5mA. Front panel knobs enable the adjustment of output voltage and current, monitored through digital panel meters. Operating in both constant current and constant voltage modes, the power supply incorporates a Static Removal Device (Shorting Stick) and a built-in ARC Circuit Protection system for safety. The independently controlled dual-channel syringe pump, SPLF4 model, allows precise control of two syringe pumps, offering flexibility in speed and flow rate adjustments. The syringe pump's movement along the X-axis, with a maximum travel distance of 200mm, is controlled via a PC interface. It accommodates standard disposable or glass syringes ranging from 2.5ml to 60ml, with a microprocessor-based control circuit achieving flow rates from 0.4 µl/hr to 650 ml/hr (with a 5ml syringe). The system includes four syringe dispensing systems with PC-based control, allowing documentation of key parameters. Additionally, a manual height adjustment platform accommodates variations in pump height based on the target height.

The system's rotating mandrels, designed for creating an aligned continuous mesh of nanofibers, exhibit a speed range of 300rpm to 4000rpm and are grounded to the high-voltage power supply via a carbon brush contact. The RM-01 rotating mandrel assembly, compatible with MN series mandrels, features nine mandrels of varying sizes, ensuring versatility in nanofiber production. The Y Plate Collector & Stationary Target, constructed from stainless steel, functions as either a stationary target or a Y-plate collector with grounding capabilities. The Y translation stage on the target facilitates a commanded motion profile for achieving uniform fiber density. The system employs two types of spinnerets: a Needle Spinneret for the smooth flow of nano fibers and a Coaxial Spinneret, enabling the simultaneous flow of two different solutions for the production of hollow and core/sheath nanofibers.

Ensuring safety and environmental control during electrospinning, the FH-03 model fume hood provides an enclosed atmosphere, protecting users from pollutants resulting from solvent evaporation. Equipped with an exhaust fan for ventilation, the fume hood can optionally include a custom-sized duct for connection to an onsite exhaust system. An optional heater reaching temperatures up to 45℃, controlled by an independent PID controller, ensures precise temperature control. The fume hood features transparent side walls and a front door shield made of float glass for clear visibility of the spinning process. The tabletop, constructed from granite, facilitates easy cleaning. As additional accessories, the unit includes normal glass syringes, glass syringes with tube connectors, spare needles, and Teflon tubes. Optionally, a 10W 254nm UV curing lamp can be added to the rotating collector drum for the curing of spun fibers, with UV-reflective coatings on the chamber's glass surfaces and an ON/OFF switch for safety. Overall, the NFES-043C Electro-spinning equipment encapsulates a comprehensive set of features and specifications, ensuring its efficacy, versatility, and safety in advanced nanofiber applications.

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