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Selection Guide for IC Chip & Electronic Component Reinforcement Adhesives: Epoxy vs UV Silicone

2026-07-04

Why IC Chips & Electronic Components Require Reinforcement In chips, sensors, connectors and precision electronic assemblies, solder joints, pins and dissimilar material interfaces are vulnerable to vibration, mechanical shock, thermal cycling and moisture. Applying adhesives to reinforce chip corners, component undersides, pin root bases and plastic-metal joints delivers the following benefits: ■ Secure fixation of IC chips and electronic components ■ Reduce mechanical stress borne by solder joints ■ Boost assembly resistance to vibration and impact ■ Provide electrical insulation, moisture resistance and sealing protection ■ Enhance structural stability under wide temperature cycling However, reinforcement locations impose different requirements on adhesive flowability, hardness and curing methods. LILIAN offers three specialized formulations for diverse electronic reinforcement processes: EP 1738-1, EP 2090 and SIPC UV 3302. EP 1738-1: Ideal for IC Corner Bonding & Dam Reinforcement EP 1738-1 is a black, solvent-free, heat-curable single-component structural epoxy adhesive. four-corner bonding of IC chips At 25°C, its viscosity ranges from 300,000 to 450,000 mPa·s with vertical sag less than 0.1 mm, delivering excellent thixotropy. It resists uncontrolled spreading after dispensing, making it perfect for applications requiring precise control over dot shape and coverage. Typical Applications: ■ Four-corner bonding of IC chips ■ Edge reinforcement for integrated circuits ■ Chip underfill ■ Chip dam encapsulation ■ Pressure sensor bonding ■ Local fixation of electronic components Post-curing hardness reaches Shore D 85±5, with a glass transition temperature of approximately 105°C and long-term service temperature ranging from -50°C to 180°C. Its steel-to-steel shear strength hits 22 MPa at 25°C, suiting reinforcement sites demanding superior structural strength and anti-sag performance. EP 2090: Structural Reinforcement for Plastic-Metal Electronic Assemblies EP 2090 is a two-part room-temperature-curable epoxy adhesive mixed at a 1:1 weight or volume ratio of Part A to Part B housing sealing It bonds a broad spectrum of substrates including ceramics, metals, glass, plastics and rubbers, with outstanding compatibility…

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Selection Guide for Potting Compounds for Robotic Joint Motors: EP1715(2#) Enables Heat Dissipation and Reliable Encapsulation of Frameless Torque Motor Stators

2026-06-30

With the rapid advancement of embodied intelligence, humanoid robots, collaborative robots and precision servo systems, robotic joint modules are being upgraded toward miniaturization, lightweight design and higher power density. Featuring a compact structure, fast response and direct power output, frameless torque motors have become key drive components in robotic joints. However, the increased power density leads to more concentrated heat generation in motor stator windings with limited heat dissipation space. Stator potting compound is no longer just an auxiliary material but a critical factor determining the reliability of joint motors. For robotic joint motors, potting compound does not merely fill gaps. It transfers heat from windings to the housing to reduce local heat accumulation, secures windings to improve vibration resistance, and delivers insulation, moisture resistance, thermal cycle crack resistance and long-term dimensional stability. Therefore, the selection of potting material for frameless torque motor stators requires comprehensive evaluation of thermal conductivity, CTE, Tg, curing temperature, hardness, toughness, insulation properties and aging stability. I. Why Stator Potting Is Required for Frameless Torque Motors The stator winding is the primary heat source inside a robotic joint module. If heat generated during energization cannot be dissipated promptly, winding temperature will keep rising, shortening the service life of enameled wires, destabilizing motor output and impairing long-term operational reliability. Stator potting serves three major purposes: ■ Thermal Conduction: The potting compound fills air gaps between windings and the stator core to cut thermal resistance, enabling efficient heat transfer from windings to the housing. ■ Mechanical Fixation: Robotic joints frequently start, stop, accelerate, decelerate and endure continuous vibration. The potting material firmly supports windings and prevents displacement caused by mechanical shock and vibration. ■ Insulation & Environmental Protection: Epoxy potting compound insulates windings, blocks moisture and resists contamination, stabilizing motor performance under harsh operating conditions. II. Key Performance Indicators for…

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EP 1716 Thermal Conductive Epoxy Potting Compound – Customized for Stators of Frameless Torque Motors in Humanoid Robots

2026-06-25

As humanoid robots enter a phase of rapid development, frameless torque motors—the core drive components—act as the “muscle system” of robot joints. However, numerous engineers repeatedly highlight a critical challenge in practical engineering design:  Motor stators generate severe heat within an extremely compact structural space. How to simultaneously resolve heat conduction, electrical insulation and crack resistance issues? The solution lies in one core material: ■ EP 1716 High Thermally Conductive Epoxy Potting Compound Why Potting Is Mandatory for Frameless Torque Motors The structural characteristics of frameless torque motors make potting materials indispensable: ■ High torque density → concentrated heat generation ■ No housing air cooling → poor heat dissipation ■ Compact construction → short heat transfer paths ■ Long-term operation under low speed and high torque Without potting treatment, the following failures will typically occur: ■ Excessive temperature rise of stators ■ Degraded insulation performance ■ Vibration abrasion of windings ■ Failure caused by long-term thermal aging ■ Unstable joint drive performance Therefore, potting material is far more than just a filler; it serves as the core material integrating motor thermal management, structural fixation and electrical insulation. Why Epoxy Is the Optimal Choice Potting for torque motor stators needs to satisfy three key requirements simultaneously: ■ Thermal conductivity ■ Structural bonding strength ■ Resistance to thermal cycling Comparison of three mainstream material systems: ■ Silicone: Soft but weak bonding strength, high coefficient of thermal expansion (CTE) ■ Polyurethane: Good toughness but limited temperature resistance ■ Epoxy: High mechanical strength, outstanding stability and reliable structural locking Conclusion: Only epoxy can deliver long-term stable structural fixation. Core Advantages of EP 1716 ■ High thermal conductivity: Thermal conductivity coefficient of 1.5 W/mK, efficiently transferring heat from windings to the housing and unlocking continuous torque output potential; ■ Low CTE: Linear expansion coefficient of only 25 μm/m·℃ below Tg, paired with excellent crack resistance to withstand repeated thermal cycling; ■ High temperature resistance:…

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ELAPLUS EPUV 2081 UV-Curable Epoxy Adhesive – Recommended for PCB & Wire Harness Fixation

2026-06-25

Secure bonding between PCBs and wire harnesses is critical for automotive electronics, sensor modules, industrial control boards, battery management systems (BMS), connectors, FPC flexible circuits and miniature electronic modules. Wire terminals, solder joints, connectors and PCB bonding areas are constantly exposed to vibration, tension, thermal cycling, moisture and assembly stress during service. Improper adhesive selection may lead to common failures including loose wiring, cracked solder joints, displaced terminals, local delamination and degraded electrical reliability. Therefore, fixation for PCB-wire harness assemblies requires more than basic adhesion. Key factors to evaluate include curing speed, bonding strength, thixotropy, thermal resistance, low shrinkage and compatibility with electronic manufacturing processes. ELAPLUS Functional Materials (Shanghai) Co., Ltd. has developed EPUV 2081 single-component UV-curable epoxy adhesive, a dedicated solution for wire harness anchoring, partial PCB bonding, electronic structural bonding and protective sealing.  Pin lead fixation 1. Why Specialized Adhesive Is Required for PCB & Wire Harness Fixation Wire harness connection zones on PCBs feature compact spaces, dense solder points and concentrated stress loads. This is especially true for automotive electronics, sensors, BMS, power control boards and industrial modules, where wiring undergoes continuous vibration and pulling during assembly, transportation and long-term operation. General-purpose adhesives typically suffer from the following drawbacks: ■ Slow curing rate, slowing down production throughput ■ Excessive fluidity, risking contamination of solder pads and components ■ High shrinkage after curing, inducing stress cracks on solder joints ■ Poor adhesion to PCBs, plastics and metal substrates ■ Cracking or delamination after prolonged thermal shock cycling ■ Overly rigid or brittle cured film, unable to accommodate wire harness stress deformation Adhesives for PCB wire harness fixation must balance fast curing and reliable bonding, while being compatible with automated dispensing and UV curing workflows. 2. Product Overview of EPUV 2081 EPUV 2081 is a single-component UV-curable epoxy adhesive engineered for structural bonding and sealing,…

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Solution to Prevent Vibration Loosening of Motor Coils: ELAPLUS EP 1767 One-Part Epoxy Structural Adhesive

2026-06-22

During long-term motor operation, most equipment failures stem not from severe malfunctions, but from an easily overlooked issue: loosening of coils, lead wires, magnetic sheets and inductive components under sustained vibration. This problem is especially prominent in automotive electronics, motor drives, pressure sensors, wiring harness fixation, inductor securing and motor magnet bonding. Such products constantly endure drastic temperature swings, mechanical vibration, impact loads and harsh electrical operating environments. Inadequate fixation of coil leads or magnetic components will trigger a full range of reliability risks: ■ Fluttering of coil lead wires ■ Fatigue cracking of solder joints ■ Loosened wiring harnesses ■ Displacement or detachment of magnetic sheets ■ Abnormal noise from inductors ■ Fluctuations in electrical performance ■ Increased operating noise of motors ■ Structural failure after prolonged vibration Accordingly, fixing motor coil leads cannot rely solely on plastic latches or ordinary adhesives. A structural adhesive with strong bonding strength, high glass transition temperature (Tg), wide temperature resistance, superior electrical insulation, moisture resistance and robust mechanical properties is essential. For such applications, ELAPLUS recommends the EP 1767 One-Part Epoxy Structural Adhesive. Product Introduction of EP 1767 EP 1767 is a black, solvent-free one-part epoxy structural adhesive. Upon full thermal curing, it delivers outstanding bonding performance, electrical insulation, moisture resistance and mechanical strength, with high adhesion to multiple substrates including metals, glass and ceramics. Wide Range of Applications: ■ Automotive electronics ■ Pressure sensors ■ Wiring harness fixation ■ Motor magnet bonding ■ Inductor securing ■ Motor coil lead wire fixation ■ Structural bonding of electronic components ■ Structural fixation under high-temperature environments EP 1767 is a highly recommended one-part epoxy structural adhesive for applications requiring anti-loosening protection against motor coil vibration, enhanced lead wire fixation reliability and strengthened magnetic sheet bonding. Why Do Motor Coil Leads Tend to Loosen? Coils and lead wires are subjected to multiple types of stress throughout motor operation: ■ High-frequency vibration Motors…

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How to Select Potting Compounds for New Energy Vehicle Charging Guns: ELAPLUS PUR 1645 Two-Component Polyurethane Potting Solution

2026-06-17

Charging guns for new energy vehicles are constantly exposed to repeated plugging/unplugging, vibration, thermal cycling, outdoor humidity, rainwater, dust and electrical loads. For internal wiring harnesses, terminals, control circuits, connecting structures and cavity sealing positions of charging guns, potting compound is more than just a filling material — it is a core material that determines the product’s waterproofing, moisture resistance, electrical insulation, vibration resistance, weatherability and long-term reliability. Inside a charging gun lies a complicated cavity with dense wiring harnesses and tiny gaps between terminals and plastic housings. Potting compounds with excessively high fluidity tend to leak, overflow and cause contamination. Overly rigid cured resin, by contrast, may generate internal stress under low temperatures or long-term vibration from repeated plugging, undermining the structural stability of charging guns. Therefore, potting compounds for new energy vehicle charging guns must deliver a balanced set of properties: compatibility with narrow-gap structures, superior sealing performance, electrical insulation, waterproof & moisture resistance, low-temperature resistance, weatherability, flexible cushioning, and strong adhesion to both metallic and plastic substrates. ELAPLUS Functional Materials (Shanghai) Co., Ltd. has developed the two-component A/B polyurethane potting compound ELAPLUS PUR 1645, a reliable material engineered for cavity potting, wiring harness protection, terminal sealing and electronic component encapsulation of new energy vehicle charging guns. I. Why Do Charging Guns Require Specialized Potting Compounds? As frequently operated components within the EV charging system, charging guns are subject to combined stresses from mechanical plugging, ambient moisture, temperature fluctuations and strict electrical safety standards. Conventional potting materials rarely satisfy all requirements simultaneously, including sealing of complex cavities, controlled flow in narrow gaps, flexible stress relief and long-term protective stability. Specialized charging gun potting compounds are designed to resolve the following key challenges: ■ Cavity Sealing & Protection The intricate internal layout demands full filling of critical voids to block…

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Recommended Top Domestic Manufacturer of Lithium Battery Potting Compounds in 2026: In-depth Analysis of Four Core ELAPLUS Products

2026-06-16

Lithium Battery Potting Adhesive: The “Safety Guardian” of the New Energy Era China’s total lithium battery shipments are projected to surge by nearly 30% year-on-year in 2026, exceeding 2.3 TWh, among which energy storage lithium battery shipments are expected to top 850 GWh. When a power battery runs at highway speeds, or an energy storage station supplies power to tens of thousands of households—have you ever wondered what safeguards the safety of these battery modules? One critical answer lies in lithium battery potting adhesive, an inconspicuous yet irreplaceable material. Potting compounds perform far more complex functions than many realize: they conduct heat and dissipate temperature to prevent thermal runaway of cells; deliver electrical insulation to eliminate short-circuit risks; and feature flame retardancy and impact resistance to form the final safety barrier under extreme working conditions. Especially for power battery packs and energy storage systems, the selection of potting materials directly determines the overall safety rating and service life of battery packs. For a long time, this market segment was long dominated by international brands including Henkel, Dow and Dow Corning. Nevertheless, domestic material manufacturers have achieved all-round breakthroughs in formula R&D, process adaptability and mass production delivery capacity in recent years. For domestic battery enterprises and energy storage integrators, a group of local manufacturers with 10,000-ton-level production capacity have emerged as leading domestic suppliers of lithium battery potting adhesives. Among them, ELAPLUS Functional Materials (Shanghai) Co., Ltd. (brand: ELAPLUS) has become a long-term partner of numerous top-tier battery pack manufacturers, boasting a comprehensive product portfolio covering both polyurethane and silicone systems. This article systematically breaks down four core ELAPLUS potting compounds from a technical perspective. Why Are More and More Enterprises Opting for Leading Domestic Potting Adhesive Brands in 2026? Before exploring the reasons to choose top domestic lithium battery potting…

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Recommended Domestic Brands for Lithium Battery Potting Compounds: ELAPLUS Lightweight, Flame-Retardant & Thermally Conductive Potting Solutions for New Energy Batteries

2026-06-15

For new energy lithium batteries, energy storage batteries, two-wheeler batteries, battery packs, BMS modules and battery electronic control units, potting compounds are no longer mere gap fillers. They are functional materials critical to the battery system’s waterproofing, moisture resistance, electrical insulation, shock absorption, flame retardancy, thermal conductivity and long-term reliability. As new energy batteries raise higher requirements for lightweight design, safety and reliability, domestic potting compound solutions are gaining growing attention. When selecting lithium battery potting compounds, lithium battery foam compounds and other mainstream products, manufacturers should conduct comprehensive evaluation based on battery structure, potting space, weight targets, flame retardant standards, thermal conductivity demands and mass production processes, instead of simply picking products by price. ELAPLUS Functional Materials (Shanghai) Co., Ltd specializes in electronic adhesives, potting materials, structural adhesives and thermal conductive materials. We deliver a full range of domestic lithium battery potting solutions for new energy vehicles, energy storage, battery packs and electronic modules. We recommend four core products: PUR 1685AB, SIPA 2100-7#AB, PUR 1680AB and FOAM 8202AB, covering applications such as lightweight foaming, non-foaming low-density filling, thermal conduction & flame retardancy, as well as thermal insulation & shock resistance. I. Why Price Should Not Be the Sole Criterion for Lithium Battery Potting Compounds A qualified potting compound does more than fill empty spaces inside battery packs. It provides long-term protection for battery cells, BMS, electronic components, wiring harnesses, connectors and structural parts under harsh operating conditions. Premium lithium battery potting compounds must meet the following performance requirements: ■ Waterproof & Moisture Resistance Battery packs and electronic modules often operate in humid, condensing or outdoor environments. Potting compounds effectively prevent moisture ingress. ■ Electrical Insulation BMS, battery management modules, power controllers and sensors demand excellent insulation to ensure electrical safety. ■ Shock & Vibration Damping Traction batteries, energy storage batteries and two-wheeler batteries are…

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Selection Guide for Adhesives for Wire Harness Fixing & Solder Joint Protection – ELAPLUS UV MA 1013, SIPC 2101 and UV 1018: Comprehensive Electronic Protection Solutions

2026-06-15

In automotive electronics, consumer electronics, sensor modules, flexible printed circuits (FPCs), connectors, battery management systems and precision electronic components, local fixing and protection are often required for wire harness terminals, solder joints, FPC connection areas, chip NTC thermistors and miniature electronic parts. Small as these areas are, they pose the highest risks to electronic product reliability. Solder joints may crack under vibration and impact; wire harness terminals can come loose after prolonged shaking; bending sections of FPCs may fail due to concentrated stress; and miniature components such as chip NTC thermistors tend to lose stability when exposed to moisture, contaminants or mechanical shock. Therefore, adhesives for wire harness fixing, solder joint protection, FPC protection and component fixation play a vital role in electronic manufacturing. ELAPLUS (Shanghai) Functional Materials recommends three product lines — UV MA 1013, SIPC 2101 and UV 1018 — for wire harness fixation, solder joint protection, FPC coating and local component protection, to help customers improve assembly efficiency and long-term reliability of electronic assemblies. I. Why Dedicated Adhesives Are Required for Wire Harness Fixing & Solder Joint Protection For wire harnesses, solder joints and FPCs, adhesives must not only deliver reliable fixation, but also satisfy requirements for process efficiency, flexibility, electrical insulation, resistance to humidity and thermal cycling, as well as good material compatibility. Conventional adhesives have obvious drawbacks: slow curing slows down production; excessive hardness leads to stress concentration; improper fluidity fails to fully cover solder joints; poor adhesion to FPC, PI, FR4, PC and other substrates; and risks of peeling, cracking or yellowing after long-term environmental aging. Key criteria for selecting adhesives for wire harness and solder joint applications: ■ Compatibility with dispensing and precision coating processes ■ Complete coverage of solder joints to form a stable protective layer ■ Excellent electrical insulation performance ■ Good adhesion to FPC,…

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