Laboratory stirring defoamerIt is a laboratory equipment that integrates stirring, mixing, and defoaming functions, widely used in materials science, chemical engineering, biomedicine, electronic packaging, and other fields. Its core function is to achieve uniform mixing of samples and removal of bubbles through the synergistic effect of mechanical stirring and vacuum defoaming, thereby improving material properties, process stability, and reliability of experimental results. The following is a detailed explanation of its specific function and application scenarios:

1、 Core role

1. Efficient mixing and blending

Function: Strong shearing, dispersion, and mixing of liquid or semi-solid samples are carried out through high-speed rotating stirring blades (such as dispersing disks, turbine blades, anchor blades, etc.).

Advantage:

Breaking the agglomerates or layered structure in the sample to achieve uniform dispersion (such as the dispersion of nanoparticles in solution).

Promote the full fusion of different components (such as polymers, solvents, additives) to avoid uneven local concentrations.

Shorten the mixing time and improve experimental efficiency (compared to manual stirring, the time can be reduced to less than 1/10).

2. Strong defoaming

Function: Simultaneously apply a vacuum environment (usually below -90kPa) during the stirring process, accelerate bubble expansion, rupture, and discharge through pressure difference.

Advantage:

Remove tiny bubbles (diameter<50 μ m) from the sample, which are difficult to observe with the naked eye but significantly affect material properties such as optical transparency, mechanical strength, and conductivity.

Avoid adhesive bubbles or deep bubbles that cannot be removed by traditional centrifugal defoaming.

Prevent bubbles from expanding and causing defects (such as holes and cracks) in subsequent processes (such as coating, curing, 3D printing).

3. Temperature control and program control

Function: Some high-end models are equipped with heating/cooling modules and program control systems, which can accurately control mixing speed, vacuum degree, temperature, and time.

Advantage:

Adapt to the mixing requirements of thermosensitive samples such as biological enzymes and polymer solutions.

Implement automated operations, reduce human errors, and improve experimental reproducibility.

2、 Typical application scenarios

1. Materials Science

Adhesives and sealants: Remove air bubbles from epoxy resin, silicone, etc., prevent the formation of holes after curing, and improve bonding strength and sealing performance.

Coatings and inks: eliminate pinholes in coatings, improve surface smoothness and glossiness, and avoid ink breakage during printing.

Composite materials: uniformly dispersed reinforcing materials such as carbon fiber and glass fiber, while removing bubbles from the resin matrix to enhance the mechanical properties of the material.

2. Electronic packaging

Thermal conductive adhesive and potting adhesive: Remove bubbles to optimize the thermal conduction path and prevent electronic components from failing due to local overheating.

LED packaging material: eliminates microbubbles in silicone, improves light transmittance and efficiency, and extends device lifespan.

3. Biopharmaceuticals

Cell culture medium: When mixed with nutrients, remove bubbles to avoid shear damage to cell growth caused by bubbles.

Pharmaceutical preparations: When preparing creams, gel and other dosage forms, ensure that the active ingredients are evenly distributed and free of bubbles interfering with the release rate.

4. 3D printing and additive manufacturing

UV curable resin: removes bubbles from the resin to prevent poor interlayer bonding or surface defects in printing.

Ceramic slurry: evenly disperse ceramic powder and defoam, improve printing accuracy and sintering density.

5. Food industry

Chocolate and candy: When mixing cocoa butter, syrup, and other ingredients, they will release bubbles to prevent the appearance of pores on the surface of the finished product.

Sauce and seasoning: eliminate air introduced during the mixing process, extend shelf life, and improve taste.