Solution for Encapsulation Protection of Filter PCB Board: Optimal Application of PUR 1680 Polyurethane Adhesive
High performance potting adhesive helps stabilize the operation of electronic componentsIn modern electronic devices, the filter PCB board serves as a key signal processing unit, and its long-term stable operation directly affects the overall performance of the machine. However, the working environment of filters is usually accompanied by multiple challenges such as temperature changes, moisture invasion, electromagnetic interference, etc. Therefore, higher requirements are put forward for the encapsulation and protection materials of PCB boards. Application pain points and encapsulation requirementsFor the special application scenarios of filter PCB boards, the potting adhesive must meet the following performance requirements:Moderate hardness after curing: it should not be too hard to avoid stress damage to the components, nor too soft to prevent inadequate protection. It is recommended to control the hardness at around 80A.Excellent electrical performance: It has good insulation and dielectric properties, ensuring circuit stability without interference.Moderate viscosity: Avoid excessive fluidity caused by low viscosity, which is difficult to control and increases the difficulty of sealing operations.Thermal conductivity ≥ 0.5W/m · K: possessing certain thermal conductivity, which helps with device heat dissipation.After curing, there are no bubbles in the appearance: ensuring sealing and electrical safety, and improving the consistency of product appearance.Good adhesion to the shell: improves overall mechanical strength and enhances environmental adaptability.Recommended product: PUR 1680 polyurethane sealantFor the above technical requirements, we recommend using PUR 1680 polyurethane sealant. This product is a single component moisture cured polyurethane material with the following significant advantages:
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