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Home » Tag » Thermally Conductive Potting Compound

How to Select Potting Adhesives for Lithium Batteries: Comparison of Lightweight, Thermally Conductive and Flame-Retardant Grades

2026-07-30

Lithium battery potting compounds shall be selected based on lightweight requirements, thermal conductivity, flame retardancy, operating temperature, cured hardness and potting volume. If battery pack weight reduction is required, Elaplus PUR FOAM 1685 or SIPA 2100-7# can be evaluated. For applications requiring flexible flame retardancy and moderate thermal conductivity, PUR 1680 is recommended. Where a wide service temperature range and low-stress protection from silicone materials are needed, SIPA 1850 is the preferred option. Why Do Lithium Batteries Require Potting Compounds? Lithium battery potting compounds are mainly used to fill voids between battery cells, BMS, high-voltage components and the enclosure, delivering the following protections for battery systems: Low-Density Lithium Battery Potting Compound ■ Waterproof and moistureproof performance ■ Electrical insulation ■ Component fixation ■ Vibration and shock resistance ■ Flame retardant protection ■ Heat transfer ■ Prevention of dust and contaminant ingress Nevertheless, battery packs generally require large-volume potting. Materials with excessive density will significantly increase the overall pack weight. Therefore, when choosing lithium battery potting compounds, thermal conductivity and unit price cannot be the only evaluation criteria. Recommended Potting Compounds for Lightweight Battery Packs PUR FOAM 1685: Foamed Polyurethane Potting Compound PUR FOAM 1685 is a 1:1 two-component foaming polyurethane potting compound. Key Features: ■ Working life: approx. 1–5 minutes ■ Foaming completes within around 10 minutes ■ Foamed density: approx. 0.2 g/ml ■ Suitable for large-volume lightweight void filling Recommended Applications: ■ Cavity filling of battery packs ■ Cushioning protection between battery cell modules ■ Weight-sensitive energy storage batteries and power batteries ■ Structures demanding reduced weight per unit potting volume For foamed potting materials, strict control shall be implemented on expansion ratio, cell uniformity, foaming pressure and impacts on cell structures. SIPA 2100-7#: Low-Density Silicone Potting Compound SIPA 2100-7# is a 1:1 low-density silicone potting compound with a…

Which Epoxy Resin to Use for Servo Motor Stator Potting?EP 1716 Is Engineers’ Top Choice Thanks to Four Key Performance Metrics

2026-05-23

Every servo motor engineer knows that stator potting may seem straightforward, yet it is full of hidden pitfalls in real-world production. Heat generation, cracking, thermal expansion, and temperature resistance — any one of these issues can lead to scrapped batches of products. To make matters worse, countless potting adhesive brands flood the market with overwhelming technical datasheets. A wrong adhesive selection can even halt your production line. Today we cut to the chase and introduce a high-performance product tailored for servo motor stator potting: ELAPLUS EP 1716 thermally conductive two-part epoxy potting compound. Why this product? We break down its advantages against the four core requirements for servo motor stator potting one by one. 1. High Heat Generation? Thermal Conductivity Must Be Up to Standard Under high-speed and high-torque operating conditions, stator windings of servo motors generate massive heat. If the thermal conductivity of potting adhesive cannot keep up, heat accumulates inside the stator, reducing motor efficiency at best and burning out windings at worst. This is why thermal conductivity is the primary screening criterion for adhesive selection. Comparison of three products: ■ EP 1715: Thermal conductivity 0.6 W/mK ■ EP 1715(3#): Thermal conductivity 1.0 W/mK ■ EP 1716: Thermal conductivity 1.5 W/mK EP 1716 features 2.5-fold higher thermal conductivity than EP 1715 and 50% higher than EP 1715(3#). In practical applications, this means internal stator heat dissipates faster to the housing, lowering motor temperature rise and greatly improving reliability during continuous operation. For high-power-density servo motors, a thermal conductivity of 1.5 W/mK delivers tangible competitive edge. 2. Cracking Under High–Low Temperature Cycling? Aging Test Data Speaks for Itself Servo motors operate in far harsher environments than laboratory conditions. From cold storage with temperatures dropping to tens of degrees below zero in northern China, to hot‑humid workshops in southern China, or sharp temperature fluctuations caused by frequent…

SIPA 1850 Thermal Potting Compound: An Ideal Heat Dissipation Solution for High-Power Fast Charging Era

2026-04-24

With the widespread adoption of fast charging technology, chargers have evolved into compact, high-precision power conversion units. However, higher power density brings severe challenges: poor heat dissipation, moisture ingress and drop damage — three core factors that shorten the service life of chargers. How to ensure long-term stable operation of electronic components in limited space? ELAPLUS presents the optimal solution: SIPA 1850 Thermally Conductive Potting Compound. Hidden Pain Points in the Charger Industry Hardware failures account for a major proportion of after-sales costs for electronic manufacturers. The key industry pain points of chargers are as follows: ※Excessive heat accumulation: Rising PD fast charging power leads to surging heat generation of internal components. Unremoved heat will cause power reduction and accelerate aging of electrolytic capacitors and other parts. ※Environmental corrosion: Chargers are often used in humid scenarios such as kitchens, bathrooms and high-humidity areas. Moisture penetration easily causes internal circuit short circuits. ※Mechanical damage: Frequent dropping and vibration loosen welding points and damage fragile internal components. SIPA 1850: All-Round Protection for Core Components Developed by ELAPLUS, SIPA 1850 is a two-component silicone thermally conductive potting compound with balanced performance and comprehensive protection. Efficient Heat Dissipation Featuring high thermal conductivity, SIPA 1850 rapidly transfers heat from components to the housing. It effectively reduces the core temperature rise of high-power chargers, ensuring stable output under long-term high-load operation. Superior Waterproof & Moistureproof Performance Fully potted PCBs form a dense protective layer after curing. The compound maintains excellent insulation under extreme humidity, greatly improving product safety and reliability. Shock & Vibration Resistance Cured silicone rubber retains unique elasticity to absorb external impact and vibration energy. It provides effective cushioning for SMD components and stabilizes internal structures against drops and shocks. Wide Application Scenarios Beyond chargers, SIPA 1850 serves as a reliable protective material for multiple…

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