A thermal paste and gel mixing and degassing machine is a blade-free planetary centrifugal mixer that disperses high-filler thermal compounds and removes bubbles under vacuum, so thermal resistance stays low and batches stay consistent.

AI servers, 5G base stations and electric-vehicle electronics generate enormous heat, which has pushed thermal management materials into the spotlight.
Thermal gels and pastes are replacing traditional pads thanks to low stress, high compressibility and automated application.
But making them is far more than "stir oil and powder together."

Thermal gels are typically silicone resin with a very high loading of thermally conductive fillers — alumina, boron nitride, zinc oxide — often exceeding 70% by weight.
That high solid content creates a chain of problems:

The Four Problems of High-Solid-Content Mixing

• Uneven filler dispersion.
  Powder agglomerates or settles at the bottom of the container, breaking the thermal path and making thermal resistance swing wildly.
• Oil-powder separation.
  Poorly bound phases stratify after standing, so batch performance drifts.
• Heat from mixing.
  Shear friction raises viscosity and slows testing, dragging out formula development.
• Bubbles that block heat.
  Air is a poor conductor; even small microbubbles noticeably degrade thermal performance.

The Four-Step Preparation Process

1. Weigh oil phase and fillers to the formula, and premix at low speed (about 500–1000 rpm for 1–2 minutes) to wet the powder.
2. Disperse by centrifugal mixing (about 1500–2000 rpm for 2–3 minutes) to break agglomerates and suspend the fillers evenly.
3. Degas under vacuum (0.2 kPa-class for 2–4 minutes) to remove microbubbles.
4. Check the batch: look for separation, and measure thermal conductivity and viscosity to confirm stability.

Why SMIDA

SMIDA's blade-free design means hard ceramic fillers never wear metal parts, so contamination is impossible.
Vacuum degassing removes the "bubble circuit breakers" inside the thermal path.
Temperature-controlled models prevent high-solid mixing from overheating.
From 1 g lab samples to 100 kg+ production batches, the same process parameters transfer directly.

Frequently Asked Questions

Why does my thermal paste show inconsistent thermal conductivity?

Usually undispersed filler agglomerates or entrapped microbubbles.
Complete dispersion plus vacuum degassing removes both causes.

Can a planetary centrifugal mixer handle 70%+ filler loading?

Yes.
Centrifugal force acts on the whole batch at once, so high-solid compounds mix evenly without dead zones.

What capacity do I need?

From 1 g laboratory samples to 100 kg+ production batches (equipment range 150 g to 100 kg+).
Tell us your batch size and we will size the machine.

Thermal materials are sold on their ability to move heat, and mixing and degassing determines how much of that ability is delivered.
Send a sample to the SMIDA lab for a free test with thermal conductivity and bubble data.