Although both rely on centrifugal force for operation, they serve different purposes. A conventional high-speed centrifuge is designed for separation, which stratifies substances of varying densities without a vacuum environment. A vacuum centrifugal defoaming machine focuses on bubble removal; it applies vacuum pumping while generating centrifugal force to extract microbubbles inside colloids and slurries. Before equipment selection, clarify whether your requirement is "separation" or "bubble elimination" to choose the right machine.

What is the difference between vacuum centrifugal defoaming machine and ordinary high-speed centrifuge?.jpg

I. What does an ordinary high-speed centrifuge do

An ordinary high-speed centrifuge generates centrifugal force through high-speed rotation, pushing higher-density components outward to achieve solid-liquid separation or liquid-liquid stratification. It is commonly used in laboratory extraction, serum separation, sample precipitation and other scenarios. It has no vacuum system and is used for samples requiring stratification rather than bubble-prone glue or slurry. When material defoaming is needed, an ordinary centrifuge can only push bubbles to one side. Without negative pressure to expand and release microbubbles, its defoaming effect is limited.

II. Why vacuum centrifugal defoaming machine can remove bubbles

A vacuum centrifugal defoaming machine evacuates the chamber while producing centrifugal force via rotation. Microbubbles in colloid or slurry expand under negative pressure and are pushed to the liquid surface by centrifugal force to burst and escape. Centrifugation and vacuuming work simultaneously. It suits high-viscosity, filler-containing materials that cannot be easily defoamed by standing still, such as adhesives, lithium battery slurries, semiconductor packaging compounds and epoxy potting adhesives.

III. Comparison of core differences

Comparison Item

Ordinary High-speed Centrifuge

Vacuum Centrifugal Defoaming Machine

Working Principle

Stratification only by centrifugal force

Centrifugation with synchronous vacuum pumping

Vacuum Environment

No

Yes, bubbles expand and escape under negative pressure

Main Application

Solid-liquid & liquid-liquid separation

Defoaming of colloids and slurries

Applicable Materials

Laboratory samples for separation

High-viscosity colloids, filler-loaded slurries, potting adhesives

Defoaming Capacity

Limited, only shifts bubbles

Capable of removing microbubbles

Corresponding SIENOX Model

—

SIE-VH350 / SIE-VH600 / SIE-VH960

 

IV. How to choose the right equipment

  1. If you need to separate solid from liquid or stratify two liquids in samples → choose ordinary high-speed centrifuge;

  2. If you need to eliminate bubbles in glue or slurry to guarantee appearance and consistency after potting, casting or dispensing → choose vacuum centrifugal defoaming machine;

  3. For high-viscosity, filler-loaded materials that cannot be defoamed by standing still → vacuum centrifugal defoaming is preferred.

V. SIENOX SIE-VH Series Vacuum Centrifugal Defoaming Machines

SIE-VH350, SIE-VH600 and SIE-VH960 are classified by processing capacity, suitable for defoaming processes of adhesives, new energy slurries and semiconductor packaging materials. If you are unsure whether your material fits centrifugal defoaming, provide adhesive type, viscosity and batch volume for technical engineers to evaluate and recommend the proper model.


Guangzhou SIENOX Technology Co., Ltd.

Website: www.sienox.com　Tel: 18925129293