AB Adhesive Defoamer Usage Guide: The Advanced Path from "Bubble Troubles" to "Perfect Adhesive"

AB adhesives (such as epoxy resin adhesives and acrylic adhesives) are widely used in manual creation, industrial manufacturing, or home maintenance due to their strong bonding ability. However, the bubbles generated during stirring and mixing are like "stubborn psoriasis", causing uneven surface of the colloid, weakened bonding strength, and even turning carefully crafted works into waste. AB adhesive defoamer is designed to solve this problem - it effortlessly disintegrates the bubble crisis with a "four liang to a thousand jin" posture. This article will teach you step by step how to scientifically use AB glue defoamer to maximize the value of every drop of glue.

1、 Preparation before use: Know yourself and know your enemy, never lose a hundred battles

I. Confirm the compatibility between defoamers and AB glue

Problem: If the defoamer conflicts with the colloidal components, it may cause delamination, discoloration, or curing failure.

Operation:

Refer to the defoamer manual to confirm its suitability for your AB adhesive type (such as epoxy resin, polyurethane, etc.).

Conduct preliminary sample testing: add a small amount of defoamer to the AB adhesive mixture, observe whether it is transparent and free of sediment, and test the performance after curing.

II. Prepare tools and environment

Tools: electronic scale (precision 0.1 grams), stirring rod (recommended to use silicone or plastic material to avoid metal ion interference), vacuum defoaming equipment (optional, used in high demand scenarios).

Environment: Keep the workbench clean and avoid dust or impurities from entering the colloid; Temperature recommendation is 20-30 ℃, humidity<60% (high humidity may accelerate curing and affect defoaming effect).

2、 Usage steps: Precise operation, step-by-step approach

Step 1: Mix AB glue in proportion

Operation:

According to the AB adhesive manual, accurately weigh component A (resin) and component B (curing agent) in a volume or weight ratio (such as 1:1, 2:1).

Pour both into a clean container and mix thoroughly (stir for 1-2 minutes).

Step 2: Add defoamer in batches

Principle: Add in small amounts multiple times to avoid excessive amounts at once that may cause colloidal abnormalities.

Operation:

First addition: Weigh 0.1% -0.3% of the total weight of AB glue as defoamer (for example, add 0.1-0.3 grams of defoamer to 100 grams of AB glue), and slowly pour it into the colloid.

Stirring and defoaming: Use a stirring rod to slowly stir along the wall of the container, with a speed controlled at 100-200 revolutions per minute (to avoid introducing new bubbles during high-speed stirring), for 3-5 minutes until the defoamer is completely dispersed.

Observe bubbles: If there are still obvious bubbles, add 0.05% -0.1% defoamer and stir repeatedly.

Step 3: Vacuum degassing (optional)

Applicable scenarios: Crafts, optical components, or precision electronic packaging that require extremely high transparency.

Operation:

Pour the mixed colloid into a vacuum defoamer, evacuate to -0.08 to -0.1MPa, and maintain for 5-10 minutes.

Release the vacuum slowly to avoid colloid overflow due to pressure difference.

Step 4: Allow to stand and cure

Operation:

Let the colloid stand for 1-2 minutes, allowing the remaining small bubbles to naturally float and burst.

Cure according to the curing conditions (such as temperature and time) specified in the AB adhesive manual, avoiding movement or vibration midway.

3、 Key Tip: Details determine success or failure

Tip 1: Control mixing speed and time

Misconception: Although high-speed mixing can quickly mix, it is easy to get caught up in air and exacerbate foaming.

Suggestion:

Maintain a uniform speed while stirring and avoid vigorous shaking of the container.

The stirring time should not be too long (total duration should not exceed 10 minutes) to prevent the colloid from solidifying prematurely due to frictional heating.

Tip 2: Layered addition to avoid local over concentration

Problem: Pouring a large amount of defoamer at once may result in excessive local concentration, forming "oil spots" or affecting solidification.

Operation:

Add the defoamer 2-3 times, stir thoroughly after each addition, and then add the next time.

Prioritize adding at the edge or bottom of the colloid, and use a stirring rod to drive the diffusion of defoamers.

Tip 3: Adjust the dosage according to the viscosity of the colloid

law:

High viscosity colloids (such as thick epoxy resins): Bubbles are more difficult to escape, and the amount of defoamer can be increased to 0.3% -0.5%.

Low viscosity colloids (such as highly mobile acrylic adhesives): The dosage should be controlled at 0.1% -0.2%.

4、 Common Problems and Solutions

Problem 1: After adding defoamers, "oil spots" appear on the surface of the colloid

Reason: The defoamer is not completely dispersed or incompatible with the colloid.

solve:

Extend the stirring time to 10 minutes, or switch to a more dispersed defoamer.

If the oil stains are severe, the colloid needs to be discarded and re mixed.

Problem 2: There are still tiny bubbles in the gel after solidification

Reason: Insufficient amount of defoamer or incomplete vacuum defoaming.

solve:

Increase the dosage of defoamer to 0.3% -0.5%, or extend the vacuum defoaming time to 15 minutes.

Check if the colloid is expired or damp (hygroscopic colloid is prone to foaming).

Problem 3: Defoamers cause delayed solidification of colloids

Reason: Some defoamers contain active ingredients that may interfere with the curing reaction.

solve:

Choose a "neutral" defoamer (clearly labeled as not affecting curing), or consult the supplier for recommended models.

Appropriately increase the curing temperature (such as from 25 ℃ to 30 ℃) to accelerate the reaction.

5、 Safety and environmental protection: details that cannot be ignored

I. Protective measures

Operation:

Wear gloves and goggles to avoid contact of defoamers with the skin or eyes.

If accidentally touched, immediately rinse with plenty of water and seek medical assistance.

II. Waste disposal

principle:

Unused defoamers should be sealed and stored to avoid volatilization or contamination.

Colloidal waste containing defoamers should be classified and treated according to local environmental regulations (such as being treated as ordinary garbage after solidification).

III. Storage conditions

Suggestion:

Defoamers should be stored in a cool, dry, and dark place, away from sources of fire and high temperatures.

After opening, it should be used up within 6 months to prevent performance degradation.

6、 Advanced application: Cross disciplinary gameplay of defoamers

I. Handmade DIY: The "seamless aesthetics" of transparent drip glue

Scene: Making pufferfish ornaments, starry sky bottles, jewelry inlays, etc.

skill:

After adding 0.1% defoamer, gently pick out the large bubbles on the surface with a toothpick, and then let it stand for defoaming.

After curing, use sandpaper to polish and polish to create a mirror effect.

II. Industrial production: the "efficiency revolution" of automated glue filling

Scenario: Circuit board packaging, LED light strip encapsulation.

skill:

Pre mix defoamer into component A or component B to reduce on-site operation steps.

Paired with an online vacuum degassing system, achieve continuous production with zero bubbles.

conclusion

AB adhesive defoamer, this "small and beautiful" additive, is the "secret weapon" to improve the performance of adhesives. Through scientific use, not only can you bid farewell to bubble troubles, but you can also make your works more exquisite, production more efficient, and cost more controllable. Whether you are a handicraft enthusiast, maintenance expert, or industrial engineer, mastering the skills of using defoamers can help AB glue applications move from "passing" to "excellence". Next time you face bubbles, why not try these methods to make your bonding path "bubble free" from now on!