Potting compounds, as key functional materials for protecting electronic components, are widely used in automotive electronics, consumer electronics, medical electronics, industrial electronics, and new energy fields.
During the production process of potting compounds, moisture can severely affect the curing quality of polyurethane, epoxy resin, and other potting compounds, leading to defects such as bubbles and pinholes, directly reducing the insulation performance and reliability of electronic products. Powder molecular sieves can effectively solve this problem.
PM molecular sieve powder is 2-4 micron white powder obtained by high-temperature calcination and activation of molecular sieve raw powders. It possesses excellent dispersibility and rapid adsorption capacity. Its main function is to remove moisture from adhesive, eliminate bubbles and odors, and improve the strength and uniformity of the adhesive.
Powder molecular sieve types include: 3A/4A/5A/13X/Modified activated molecular sieve powder.
Application Principle of Molecular Sieve Powder:
In the production of electronic sealing potting compounds, the working principle of powder molecular sieves is based on a dual mechanism of "physical adsorption + chemical synergy." Through its sieving effect, as an amorphous desiccant, it can accurately adsorb moisture in the production process. Trace amounts of moisture react with isocyanate (NCO) to generate CO₂ gas, which is the root cause of pinholes or honeycomb structures in potting compounds. Activated zeolite powder inhibits bubble formation at its source by adsorbing moisture, and simultaneously extends the production time of potting compounds through continuous dehydration.
Other Applications:
In addition to electronic sealing potting compounds, it can be widely used in polyurethane adhesives, sealants, AB glues, paints, coatings, structural adhesives, building material adhesives, and floor paints, etc.
Packaging and Storage:
Packaging: 15 kg valve bag + ton bag, or carton.
Storage: Store in a cool, dry place. Use immediately after opening and seal tightly.
