Bubbles, uneven surfaces, and oily surfaces on the surface of the encapsulant are all appearance problems.
Factors:Improper mixing or mixing processes, high humidity environments, and excessive curing can lead to the formation of bubbles and voids.
Solution:
Stir thoroughly: Make sure the resin and hardener are well mixed to avoid the introduction of air bubbles.
Vacuum treatment: Vacuum equipment is used during the mixing and potting process to help remove air bubbles introduced during agitation.
Humidity control: When working in a high humidity environment, humidity control equipment is used to ensure that the material is not damp during preparation and application.
Factors:Factors such as different batches of material, different process conditions, and prolonged exposure to light can cause color differences or whitening of the encapsulant.
Solution:
Use the same lot of material: Make sure the same lot of resin and hardener is used in the production process.
Control light conditions: Avoid prolonged exposure of the encapsulant to sunlight, or choose a encapsulant with good UV resistance.
Factors:Contamination during preparation, uneven coating, improper control of process parameters, etc., can lead to unsmooth or flawed surfaces.
Solution:
Control the preparation environment: Ensure that the preparation area is clean and avoid unnecessary contamination of the encapsulant.
Adjust coating process parameters: adjust coating speed, pressure and other parameters to ensure uniform coating.
Regularly inspect and clean the coating equipment: Make sure the equipment is free of dust and impurities.
Factors:Factors such as the exposure time of the material, prolonged exposure to light, chemical corrosion, etc., can cause color changes.
Solution:
Choose a potting compound that is highly resistant to light.
Where needed, additives are used to enhance the chemical resistance of encapsulants.
In applications with harsh environmental conditions, choose a potting compound with good color stability.
Factors:Factors such as inaccurate mixing ratios, improper temperature control, and too high or too low humidity can result in incomplete or over-curing.
Solution:
Ensure that the mixing ratio is accurate, and use the appropriate ratio of resin and hardener according to the manufacturer's recommendations.
Control the temperature and humidity of the curing to ensure that the curing is carried out under the right environmental conditions.
According to the production needs, choose the appropriate hardness of the potting compound.
Factors:Differences in viscosity can lead to problems such as uneven coating and inadequate filling.
Solution:
Before application, adjust the viscosity of the encapsulant according to the production needs.
Choose a low-viscosity encapsulant suitable for your coating process.
Factors:In some chemical environments, encapsulants can be chemically corroded, causing cosmetic problems.
Solution:
Choose a potting compound with high chemical resistance according to the application environment.
Take measures in environments that may be subject to chemical corrosion, such as adding chemical anti-chemical agents.
Factors:Temperature and humidity during the preparation process, environmental conditions after the application of potting compound, etc.
Solution:
Control the temperature and humidity of the production environment to ensure that the preparation is carried out under suitable conditions.
In the environment in which the product is used, consider the environmental factors in advance and select the potting compound that is suitable for the specific environment.
Factors:Lack of quality control and monitoring can lead to problems not being detected and addressed in a timely manner.
Solution:
Establish a complete quality inspection system to test each batch of potting compound.
The monitoring system is used in the production process to monitor key parameters in real time, detect abnormalities and make adjustments in time.
Article**In: Frequently Asked Questions about Encapsulants - Factors Affecting the Appearance of Encapsulants?- Adhesive Encyclopedia - Shanghai Baigao (shbeginor.).com)