DHE-15 Micro Conical Twin Screw Extruder
The DHE-15 is a micro conical twin-screw extruder for polymer research, teaching laboratories, and small-scale validation. It melts, mixes, and continuously extrudes small sample quantities, making it suitable for valuable, scarce, or early-stage material systems on a laboratory bench or in a fume hood.
Equipment Identity and Structure
Equipment model: DHE-15 micro conical twin-screw extruder.
Conical twin screws with variable pitch and variable diameter for micro-mixing powders, pellets, and solvent-based systems.
The mixing chamber opens through 180 degrees for observation, cleaning, material changeover, and routine maintenance.
Optional downstream extensions can support pelletizing, micro injection molding, film casting/drawing, and spinning.
Key Technical Parameters
| Item | Parameter |
|---|
| Model | DHE-15 |
| Equipment type | Micro conical twin-screw extruder |
| Typical material amount | Approx. 5-15 g |
| Mixing capacity | 15 mL |
| Dimensions | 580 x 360 x 780 mm |
| Equipment volume | Approx. 0.23 m3 |
| Structural stiffness | 226 GPa |
| Mixing chamber | 180-degree opening |
| Screw structure | Conical twin screws, variable pitch and diameter |
| Suitable feed forms | Powders, pellets, and solvent systems |
| Installation | Laboratory bench or fume hood |
Applications
Polymer blending, formulation screening, and process-window exploration.
Micro-compounding studies for composites, rubber, and recyclable materials.
Experimental development of food, feed, solid-dispersion, solid-liquid blending, and pharmaceutical material systems.
Research workflows that connect melt compounding to pelletizing, micro injection molding, film, or spinning evaluation.
Operating Instructions
Before startup, check the power supply, heating zones, screws, and mixing chamber; confirm the equipment is clean and free of residue.
Prepare approximately 5-15 g of sample, load it into the chamber, and lock the chamber.
Set temperature, screw speed, and runtime in the rheology control software, then select single, timed, continuous, or constant-speed mode.
Monitor process data and rheology curves, recording torque, temperature, pressure, and speed changes as required.
Collect the product after the run and proceed with pelletizing, micro injection molding, film, or spinning evaluation when needed.
After the equipment cools to a safe temperature, clean the screws and mixing chamber to prevent carryover.
Research Use Note
The DHE-15 can serve as the upstream micro melt-compounding device for research sample preparation. For example, related HA/PLLA work used the DHE-15 together with the CDM-15 for micro melt compounding and subsequent characterization. Specific performance conclusions should be based on the complete experimental system and follow-up test results.
Modular Output and Downstream Equipment
FAQ
What is the minimum sample amount for a DHE-15 run?
Typical sample size is about 5-15 g, with a mixing capacity of 15 mL.
What material forms can the DHE-15 handle?
Powders, granules and solvent-based systems. It uses conical twin screws with variable pitch and variable diameter.
How large is the DHE-15 — will it fit in a fume hood?
580 × 360 × 780 mm, about 0.23 m³. It can be placed on a lab bench or inside a fume hood.
Is it easy to change material and clean?
The mixing chamber opens 180° flat, allowing easy observation, cleaning, material change and routine maintenance.
What downstream steps can follow compounding?
It can be extended to pelletizing, injection moulding, film casting and fibre spinning, depending on the experimental need.
What data can be recorded during a run?
Temperature, screw speed and run time are set in the rheology control software, with single, timed, continuous or constant-speed modes available. Torque, temperature, pressure and speed are monitored and recorded in real time.
Which material systems is it suited to?
Polymer blending, formulation screening and process window exploration; micro-compounding of composites, rubber and recyclates; and experimental development for food, feed, solid dispersion, solid-liquid blending and pharmaceutical materials.