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Solution for LED hard light strip sealing: EP 1708 (7 #) High strength protection of transparent epoxy sealing adhesive

2025-10-23

With the rapid development of LED lighting technology, LED rigid strips have been widely used in commercial lighting, display light boxes, outdoor advertising, car light modules, and other fields. It has the advantages of high brightness, long lifespan, and energy-saving stability. However, in long-term use, the moisture, dust, corrosion, and mechanical impact protection of LED hard light strips become key challenges.In this application context, choosing a suitable LED hard light strip sealing adhesive can not only effectively improve product protection performance, but also extend service life, improve light quality and overall reliability. This article will introduce the typical application and performance advantages of Elaplus EP 1708 (7 #) transparent epoxy sealant in LED hard light strips.1、 The necessity of LED hard light strip encapsulationLED hard light strips are usually composed of aluminum substrates, LED beads, resistors, capacitors, and other components, which are highly susceptible to external environmental influences when exposed to air.The main reasons for its failure include:Moisture infiltration leads to short circuit or blackening of the circuit;Dust and oil pollution adhesion affect heat dissipation and light efficiency;Long term illumination leads to thermal stress cracking;Solvent and chemical erosion of component solder joints.Therefore, using transparent epoxy sealant for overall sealing and encapsulation can not only effectively isolate moisture and pollutants, but also provide structural support and electrical insulation protection for the light strip.2、 Glue requirementsThe LED hard light strip sealant needs to meet the following performance requirements simultaneously:High transparency: ensuring that light efficiency is not affected;Strong yellowing resistance: no yellowing or turbidity after prolonged illumination;Good electrical insulation: prevents short circuit or arc breakdown;High and low temperature resistance: stable in environments ranging from -40 ° C to 100 ° C;Strong adhesion and no cracking: Good adhesion to aluminum substrates, plastic lampshades, and PCBs;Easy to construct, high curing efficiency: suitable for automated production…

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Conformal coating case for circuit boards in the textile industry: Application of COATING 9067 high transparency organic silicon coating adhesive

2025-10-23

In modern textile equipment, automation and intelligent control have become core trends. Whether it is a textile host, servo control unit, or sensing detection module, their circuit boards must operate stably for a long time in complex environments such as high temperature, high humidity, dust, and chemical media. This poses extremely high requirements for electronic protective materials: they not only need to be moisture-proof and corrosion-resistant, but also have multiple properties such as insulation, flame retardancy, high and low temperature resistance, and thermal conductivity and heat dissipation. 1、 Project BackgroundThe textile workshop environment is characterized by high temperature, high humidity, oil content, and dust content. The equipment will be subject to:Thermal expansion and contraction caused by high temperature and temperature difference cycles;Pollution from grease, hydraulic oil, and kerosene mist;Corrosion caused by acid-base salt spray and metal dust in the air.Traditional coatings are prone to cracking, delamination, yellowing, or electrical performance degradation in this environment, which cannot guarantee long-term stable operation. The customer has therefore raised higher requirements – the surface of the circuit board needs to be coated with a 3mm thick transparent three proof adhesive to achieve comprehensive protection.2、 Customer needs and challengesThe customer has the following core requirements for material performance:Can be used in conjunction with spraying equipment to achieve stable construction.High insulation and UL94V-0 flame retardant rating;Fully transparent, environmentally friendly and odorless;Moisture proof, waterproof, dustproof;Acid, alkali, salt spray, and grease corrosion;Resistant to high and low temperatures (-30 ℃~180 ℃);Good thermal conductivity and resistance to thermal expansion and contraction;3、 Recommended solution: COATING 9067 Organic Silicon Three proof Coating AdhesiveYilian recommended Elaplus COATING 9067 silicone coating adhesive to customers.This is a low viscosity, transparent three proof material designed specifically for electronic circuit protection, with excellent adhesion and weather resistance, suitable for various processes such as spraying, brushing, dipping, etc.Core…

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【 Case Application | EP 1700A/B Epoxy Encapsulation Adhesive for Transistor Packaging 】

2025-10-23

In the packaging process of electronic devices, the transistor serves as a key component for controlling current amplification, and its stability directly affects the reliability and lifespan of the entire machine. Especially in high-frequency, high temperature, and high humidity environments, traditional packaging materials are prone to problems such as cracking, leakage, or performance degradation. Therefore, choosing a stable and durable potting adhesive is crucial. Transistor packaging 1、 Application backgroundPower type transistors often experience continuous current surges and temperature fluctuations during operation. Its internal structure is complex and requires extremely high requirements for the sealing material. It not only needs to have good electrical insulation performance, but also needs to maintain adhesive strength and structural integrity under long-term thermal cycling.The sealing material previously used by the customer is prone to microcracks during high-temperature aging testing, resulting in an increase in transistor leakage rate and a decrease in insulation resistance, which seriously affects the product qualification rate. For this reason, they chose to try the EP 1700A/B epoxy sealant with better performance.2、 Material characteristicsEP 1700A/B epoxy potting adhesive is a 1:1 ratio heating curing potting material that can be stored at room temperature and maintain fluidity even after low-temperature mixing, making it convenient for mass production. Its key advantages include:Excellent high temperature resistanceAfter curing, the material can stably withstand high temperature environments without softening or deformation, and is suitable for long-term operation of power devices.Outstanding mechanical performanceThe cured material has strong toughness, impact resistance, and vibration resistance, which can effectively absorb thermal stress and avoid cracking of the packaging layer caused by mismatched thermal expansion coefficients.Excellent protective performanceIt has excellent moisture, water, oil, and dust resistance, and can resist acid and alkali corrosion, ensuring long-term stable operation of the device in harsh environments.Excellent electrical characteristicsAfter curing, it has high insulation, good compressive…

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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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