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Sealing solution for automotive switch wiring harness: reliable protection with high flexibility, flame-retardant PUR 1602

2025-10-16

In modern automotive electronic systems, switch wiring harnesses play a crucial role in signal transmission and power distribution. With the improvement of vehicle intelligence, the integration of wiring harnesses is higher and the wiring is denser. At the same time, it is also exposed to more harsh environments – high temperature, moisture, dust, oil stains, and vibration, any of which can lead to unstable signals or short circuits. Therefore, reliable sealing and protection of the switch harness ends have become an important part of improving the reliability of the entire vehicle. Application BackgroundDuring the mass production process, a certain automobile manufacturer found that the insulation performance of the switch harness connection was prone to decrease due to moisture intrusion and mechanical stress. Traditional single component sealants have the following problems in use:Slow solidification and limited production pace;Insufficient adhesion to plastic parts (especially POM);The sealing layer is prone to hardening and cracking under long-term thermal cycling.Therefore, the customer hopes to find a sealing material that combines high flexibility, flame retardancy, and excellent adhesion.Solution: PUR 1602 two-component sealing sealantThe PUR 1602A/B two-component polyurethane elastomer launched by ELAPLUS perfectly solves the pain point problem in automotive wire harness sealing with its unique molecular structure and environmentally friendly system.Industrial wire harness sealingIndustrial wire harness sealingProduct Features HighlightsMedium viscosity design: controllable flowability, no glue leakage in small gaps, automatic leveling after infusion;Excellent flexibility and weather resistance: After curing, it forms a highly elastic protective layer that can resist thermal expansion, contraction, and vibration impact;Strong adhesion: It has good adhesion to most metal, PVC, ABS, PA and other substrates,⚠️ Plasma surface treatment is required before using POM materials to enhance adhesion;Superior flame retardant performance: meets UL 94 V-0 level requirements and meets automotive safety standards;Environmentally friendly solvent-free formula: odorless, heavy metal free, production friendly materials;Excellent waterproof…

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Elaplus solution for insulation, thermal conductivity and sealing of high-voltage transformer

2025-10-15

In the high-voltage distribution and measurement process of the power system, the current transformer (CT/potential transformer, PT) is a key component for achieving current and voltage sampling and isolation. In order to ensure its long-term electrical safety and reliable transmission performance, the internal coils and components of the transformer need to be protected by high insulation and thermal conductivity potting. However, traditional epoxy systems are difficult to meet the comprehensive requirements of insulation and long-term stability for high-voltage transformers due to high viscosity, high internal stress, and difficulty in defoaming.Insulation, thermal conductivity, and sealing of high-voltage transformersAnalysis of application difficultiesIn the sealing application of high-voltage transformers, engineers usually face the following technical challenges:one ️⃣ Lack of fluidity: During sealing, the colloid is difficult to penetrate the gap between the coils, which can easily lead to bubbles and voids.two ️⃣ High insulation requirements: Long term exposure to high voltage electric fields requires excellent dielectric strength and electrical insulation properties.three ️⃣ Low stress and corrosion resistance: If the shrinkage rate is high during the curing process, it will lead to stress concentration and affect the stability of the coil structure.four ️⃣ Operability: On site sealing requires room temperature curing and strong self foaming ability, making it easy for large-scale production.Recommended solution – SIPC 1818 low viscosity silicone rubber sealantConsidering the complex structure, deep sealing space, and high heat dissipation requirements of high-voltage transformers, it is recommended to use Elaplus SIPC 1818A/B two-component silicone sealing adhesive.This product has become an ideal solution for the high-voltage transformer industry due to its excellent low viscosity, self foaming, and electrical insulation properties.Product FeaturesAdvantages of Performance Metrics ExplanationLow viscosity (1200~1500 CPS) with excellent fluidity, can quickly penetrate the interior of the coil and effectively remove bubblesExcellent self foaming performance, achieving a dense and smooth cured surface without…

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Solution for Vacuum Glass Frame Sealing with Adhesive – SIPA 1820&SIPC 1859 for Durable Sealing and Reliable Protection

2025-10-15

1、 Project Background: Sealing Challenge of Vacuum GlassVacuum glass is formed by two parallel glass pieces passing through sealing strips and supporting columns to form a cavity. After vacuum pumping, the cavity can effectively block heat conduction and improve insulation performance.However, due to the significant pressure difference inside and outside the vacuum chamber (up to 1 atmosphere), the sealant not only needs to have high adhesive strength and excellent weather resistance, but also needs to maintain structural stability under high and low temperature cycling, humidity, and mechanical stress. 2、 Glue requirementsAccording to the long-term testing requirements of the customer’s laboratory, the adhesive performance of vacuum glass frame sealing needs to meet the following standards:reliability testDouble 85 test (85 ℃/85% RH) for 1000 hours without shedding or foamingCold and hot shock test: -29 ℃~+60 ℃, 252 cycles, low temperature for half an hour, high temperature for half an hourmechanical propertiesPeel strength>15 MPa (not mandatory, but requires good adhesive strength and flexibility)sealing performanceWaterproof level needs to reach IPX8Long term vacuum sealing stability, no air leakage, no delamination, no crackingThese conditions mean that ordinary structural adhesives or glass adhesives can no longer meet the demand, and a high-performance silicone adhesive sealing system must be used, while also considering structural adhesion, sealing protection, and thermal stress absorption.3、 Recommended solutions✅ Option 1: SIPA 1820 additive silicone adhesive (heat cured type)Elaplus SIPA 1820 is a single component addition molding silicone adhesive based on a special silicone rubber system, which is cured by heating to form a flexible and weather resistant elastomer.Performance characteristics:High reliability: Passed rigorous tests such as dual 85, thermal shock, salt spray, and wet heat agingExcellent weather resistance: no yellowing or cracking after long-term exposure to ultraviolet rays, moisture, and temperature changesExcellent sealing performance: After curing, it forms a continuous elastic structure, effectively preventing…

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What adhesive is used for bonding servo motor magnets? Elaplus Epoxy Adhesive EP Series High Strength and High Temperature Resistant Solution

2025-10-11

In the structure of servo motors, the adhesion between the rotor and the magnet is a key link that affects the performance and lifespan of the motor. With the development of motors towards high power density, high speed, and high temperature resistance, the adhesive used for magnetic steel bonding must remain stable under high temperature, high centrifugal force, and high vibration conditions.This article will introduce the ELAPLUS epoxy adhesive series suitable for bonding servo motor magnets and rotors, covering both single component and two-component solutions, fully meeting different process and performance requirements. The core challenge of bonding servo motor magnetsThe rotor magnet of servo motors is usually fixed by adhesive bonding. Due to its complex working environment, higher requirements have been put forward for adhesives:Strong high temperature resistance: The operating temperature of the motor can reach 150-180 ° C;High shear strength and resistance to centrifugal force: prevent magnet detachment during high-speed rotation;Low shrinkage rate and high Tg: reduce cracking and stress caused by thermal expansion and contraction;Anti aging and anti vibration: ensuring long-term operational reliability;Adaptation to automated dispensing: Suitable fluidity and curing efficiency are required.In response to these needs, Yilian has launched multiple epoxy structural adhesives that can stably achieve high-strength bonding between magnets and metal rotors.Elaplus servo motor magnet bonding special epoxy adhesive series 1. EP 1766-1K single component epoxy adhesiveCuring conditions: 100 ° C for 1 hourTg value: 120 ° CFeatures: low viscosity, easy to glue, high strength after curing, and good dimensional stability.Application advantages: Suitable for automated batch dispensing production, high bonding strength after curing, and not easily brittle.✅ Recommended application: Magnetic bonding for small and medium-sized servo motors and stepper motors.2. EP 1769-1K High Tg Micro Flowing Epoxy AdhesiveCuring method: Thermal curingTemperature resistance: 180 ° CFeatures: High Tg structural design, low shrinkage rate, excellent heat resistance…

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Elaplus Application Case of Lead Sealing for Air Flow Meter | Solution for Gasoline Resistant, Low Viscosity White Sealing Adhesive

2025-10-11

In automotive electronics, the Mass Air Flow Sensor (MAF) is one of the core components in the engine control system. It helps ECU accurately calculate fuel injection quantity by measuring the volume or mass of air entering the engine, thereby optimizing combustion efficiency and emission control.Air flow meters typically operate near the engine intake duct in complex environments such as high temperatures, fuel vapors, moisture, and strong mechanical vibrations. If its lead packaging is unreliable, signal interference, failure, and even safety hazards may occur. Therefore, choosing the appropriate sealing adhesive becomes the key to ensuring its long-term stable operation. Application ChallengeDuring the lead sealing process of the air flow meter, the customer made the following typical requirements:Resistant to 80 ℃ gasolineIf the lead is exposed to the volatile environment of gasoline for a long time, if the colloid is not resistant to oil, it is easy to swell and crack, leading to electrical failure.Low viscosity, easy to penetrateThe sealing adhesive should be able to flow to small gaps, avoid bubbles and voids, and ensure insulation and sealing effect at the lead.White appearanceWhite colloid is convenient for detecting the uniformity of encapsulation, and also meets aesthetic and identification requirements in certain situations.Recommended solution – EP 1702W white low viscosity potting adhesiveFor the special requirements of air flow meters, it is recommended to use EP 1702W sealant.Product Features:Chemical resistant media: Excellent resistance to gasoline, lubricants, moisture, etc., maintaining stable performance even in gasoline at 80 ℃;Low viscosity design: With excellent fluidity, it can easily fill the narrow gaps around the leads, reducing the risk of bubbles;Electrical insulation: After curing, a dense insulation layer is formed, effectively preventing short circuits and leakage;Advantages of curing: It can be cured at room temperature, has low heat release, low volume shrinkage rate, and avoids stress damage;Bright…

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Full analysis of Hall sensor encapsulation process | Professional protection to enhance reliability

2025-10-11

Hall sensors are an important type of magnetic field sensing device widely used in fields such as automotive electronics, industrial control, and consumer electronics. Due to its use of non airtight packaging, it is highly susceptible to external media and mechanical impacts in harsh environments such as high temperature, humidity, oil, vibration, etc. without effective protection. Therefore, potting and conformal coating are key components in the reliability design of Hall sensors. Sealing: Injecting sealing material into the interior of the shell to form a complete package, providing electrical insulation, protection, and mechanical reinforcement; Coating overlay: forming a thin film layer on the surface of PCB or sensitive components, mainly used for moisture, dust, and basic chemical protection.1、 Environmental and mechanical protection methods

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Detailed explanation of the difference between UV glue and single component epoxy glue – a must read popular science guide for choosing glue

2025-10-11

The selection of adhesives is crucial in modern manufacturing and maintenance industries. UV glue and single component epoxy glue, as two common adhesives, each have unique properties and application scenarios. This article will provide an in-depth analysis of the differences between UV glue and single component epoxy glue, helping you make the best choice based on your needs. 1、 What is UV glue?UV glue is a type of adhesive that quickly cures through exposure to ultraviolet radiation. It is usually a transparent liquid and suitable for various materials such as glass, plastic, metal, etc. UV glue curing speed is extremely fast, usually completed within seconds to minutes, greatly improving production efficiency.2、 What is single component epoxy adhesive?Single component epoxy adhesive is a pre prepared epoxy resin adhesive that can be used without mixing other components. It has excellent adhesive strength and chemical resistance, suitable for bonding materials such as metals, ceramics, plastics, etc. The curing time is relatively long, usually ranging from several hours to a day.3、 The main difference between UV glue and single component epoxy glueCuring methodUV glue: rapidly cured by UV irradiation, relying on UV energy.Single component epoxy adhesive: cured by chemical reaction at room temperature or heating conditions, without the need for external light source.curing timeUV glue: seconds to minutes, fast and efficient.Single component epoxy adhesive: several hours to 24 hours, suitable for low-speed assembly.Applicable materials and scenariosUV glue: suitable for transparent or semi transparent materials, commonly used for bonding electronic components and optical devices.Single component epoxy adhesive: suitable for various materials, especially metal and high-strength applications.Adhesive strength and durabilityUV glue: High adhesive strength, smooth surface, but limited effect on thick adhesive layers.Single component epoxy adhesive: excellent strength, corrosion resistance, and temperature resistance.construction technologyUV glue: UV lamp equipment is required, and the construction environment requires light…

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Elaplus Application Case: Thermal Insulation and Sealing Solution for Contactor Electronic Coil

2025-10-11

In industrial control and power systems, contactors, as key electrical components, have long been responsible for high-frequency switching and high current carrying tasks. Its internal electronic coils not only require stable electrical performance, but also must balance thermal conductivity, protection, and reliability. How to choose the appropriate sealing adhesive has become the key to ensuring the long-term stable operation of the contactor. Thermal conductivity sealing of contactor electronic coilApplication Challenge The contactor electronic coil faces the following technical difficulties during use:Long term temperature resistance performance: It needs to work for a long time at -40 ℃~85 ℃ to ensure no cracking or failure.Double 85 reliability: After 14 days of high temperature and high humidity testing at 85 ℃/85% RH, it still needs to maintain stable performance without bulging or delamination.Efficient thermal conductivity: Electronic coils generate heat during operation and require a thermal conductivity of ≥ 1.5 W/m · K to effectively reduce temperature rise and improve service life.Cost and scalability: While meeting performance requirements, it is necessary to balance cost-effectiveness for large-scale application and promotion.Recommended solution – PUR 6650 (1.5W) thermal conductive sealantFor the special requirements of contactor electronic coils, it is recommended to use PUR 6650 (1.5W) two-component polyurethane sealant. Compared to epoxy systems, this product has better flexibility and cost advantages, making it particularly suitable for large-scale promotion and application.Product FeaturesExcellent temperature resistance: Long term operation in an environment of -40 ℃~85 ℃, stable performance.Double 85 verification passed: tested for 14 days under high temperature and high humidity conditions of 85 ℃/85% RH, it still maintains excellent insulation and adhesion.High thermal conductivity: thermal conductivity of 1.5 W/m · K, effectively dissipating coil heat and reducing temperature rise.Environmental safety: low odor, low VOC, compliant with ROHS and REACH regulations.Excellent process adaptability: It can be machine glued or manually mixed,…

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Case study | Application of Elaplus PCB board enclosure dam sealing

2025-09-19

In the field of electronic manufacturing, the reliability of PCB circuit boards directly determines the stability and service life of products. In order to resist moisture, dust, vibration, and chemical corrosion, encapsulation and dam sealing processes have become the core processes to ensure the long-term operation of circuit boards. Today we will share an example of the application of Yilian PCB board dam sealing. Application scenariosThree prevention measures for local potting: special areas of the PCB board need to be protected with a potting thickness of about 5mm. Stress free silicon gel must be used to avoid stress cracking or solder joint damage.Dam enclosure molding: in order to limit the filling area, it is necessary to use paste dam enclosure glue to construct the boundary first. It is required that the material does not collapse, the surface drying speed is fast, and it is compatible with the subsequent silicon gel, without “poisoning”.face challenges The sealing thickness is large, and if the material shrinks or generates stress, it is easy to cause virtual soldering of solder joints and damage to components.Conventional dam sealant is easy to collapse or slow to solidify, affecting the process efficiency, and some materials are incompatible with silicon gel, which may lead to incomplete solidification.The working environment of PCB is complex, and moisture-proof, waterproof, dustproof, and temperature resistant performance are indispensable. product solution

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