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Industry Application

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Application of EP 2029A/B epoxy adhesive in the bonding and sealing of thermistor and housing

2025-04-18

In modern electronic devices, thermistors are a key component that can sense temperature changes and provide feedback on resistance changes. They are widely used in fields such as home appliances, power equipment, motors, and automotive electronics. In order to ensure the long-term stable operation of the thermistor, its adhesion and protection to the housing are crucial. EP 2029A/B epoxy adhesive, as a two-component structural adhesive with excellent mechanical properties and chemical stability, is an ideal choice for playing an important role in the fields of thermistor encapsulation and shell bonding.Background: The Importance of Bonding Thermistors to the Shell.

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Elaplus Case Study/Application of adhesive to pressure sensor

2025-04-11

In modern industrial manufacturing, pressure sensors are widely used as key detection components in fields such as automotive, aerospace, medical equipment, and industrial automation. However, these high-precision devices have extremely demanding requirements for material selection and processes, especially in the application of adhesives.We will discuss two adhesives that are particularly suitable for the production of pressure sensors – SIGEL 1806 for gel encapsulation and EP 1738 for shell bonding, and show how they can help enterprises improve product quality and production efficiency through specific cases.Demand for gel pottingThe internal circuit board of the pressure sensor requires a sealing material that can provide protection to prevent damage to sensitive components from external environments such as humidity, dust, vibration, etc. At the same time, the sealing material must have low stress characteristics to avoid damaging precision components due to mismatched thermal expansion coefficients.The difficulty of shell bondingThe housing of a pressure sensor is composed of two materials: metal and plastic. Traditional adhesives are difficult to achieve strong bonding and require stability under extreme conditions of high and low temperatures. In addition, the customer wishes to simplify the production process and reduce the curing time.Customized solution: Double material combination solves technical problems After on-site testing by our technical team, a targeted combination solution of “sealing+structural bonding” has been proposed:▶ Core protective layer: SIGEL1806 gel potting adhesiveInnovative low modulus formula (penetration degree 70) effectively absorbs mechanical stressMaintain elasticity over a wide temperature range of -60 ℃ to 200 ℃3D stereoscopic coating technology achieves “zero damage” protection for sensitive componentsThixotropic index>4.5, no sagging during vertical surface construction, and the sealing qualification rate has been increased to 99.2%▶ High strength adhesive layer: EP 1738 epoxy adhesiveSingle component thermosetting design (120 ℃/60min), increasing production line efficiency by 40%Shear strength>18MPa, according to MIL-STD-810G vibration standard Chemical resistant properties:…

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Elaplus Case Study on Thin Layer Sealing of Automotive Oil Pump PCB

2025-04-07

In the wave of intelligentization in the automotive industry, electronic control systems are becoming the “nerve center” of vehicle operation. As the core execution unit of the fuel supply system, the fuel pump controller PCB has long faced extreme challenges under harsh operating conditions: high-temperature roasting at 120 ℃ in the engine compartment, gasoline vapor erosion, and continuous mechanical vibration… all of which are threatening the reliable operation of electronic components. How to build all-weather protective barriers for critical circuits? The Wave of Automotive Electronics and the Challenge of PCB EncapsulationWith the development of intelligent and electrified automobiles, electronic control systems have become the core components of modern cars. From engine management systems to battery control units for new energy vehicles, precision printed circuit boards (PCBs) work continuously in harsh environments such as high temperatures, vibrations, and humidity, and their reliability directly affects the safety and durability of the vehicle. However, the application of PCBs in key components such as automotive oil pumps faces the following challenges:Adverse environment: Complex working conditions such as high temperature, high humidity, oil pollution, and vibration require extremely high protection for electronic components.High reliability requirement: Electronic component failure may lead to oil pump failure, which in turn can cause vehicle power system paralysis or safety hazards.Environmental Protection and Regulatory Pressure: Global environmental standards for automotive components are becoming increasingly strict, and the problems of solvent residue and heavy metal pollution in traditional sealing materials urgently need to be addressed.Recommended product: PUR 1627A/B two-component polyurethane sealantPUR 1627A/B is a two-component solvent-free room temperature or heat cured resin elastomer composite used in two-component sealing, filling, flame retardant, thermal conductivity and other fields. The raw materials are free of heavy metals, environmentally friendly, and have a wide range of process operability. The finished product has high physical properties…

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Automotive electronic steering wheel hands-free sensor PCB protection

2025-04-07

Application background: PCB protection challenges in the era of automotive electronicsWith the rapid development of intelligent driving technology, automotive electronic systems are undergoing a comprehensive upgrade from traditional mechanical control to intelligent and digital direction. Among them, the Hand Off Detection Sensor, as a key component of Advanced Driver Assistance Systems (ADAS), plays an important role in monitoring whether the driver has released the steering wheel and ensuring driving safety.However, these precision electronic components face multiple challenges in practical applications:Strict environmental conditions: The interior space of the car is narrow and exposed to complex environments such as vibration, high temperature, humidity, salt spray, etc. for a long time;High reliability requirements: Sensors, chips, and circuits on PCB (printed circuit board) must maintain stable performance under extreme working conditions;Lightweight and space limitations: Adhesives need to balance sealing, fixing, and shock absorption functions while avoiding additional weight or space occupation.For this scenario, PUR 1680 polyurethane adhesive has become the preferred solution for automotive electronic PCB protection due to its excellent comprehensive performance.Solution – PUR 1680 polyurethane sealant breakthrough advantagePUR 1680 A/B is a two-component solvent-free room temperature or heat cured resin elastomer composite used for two-component sealing and filling. The raw materials are free of heavy metals, environmentally friendly, and have a wide range of process operability. The finished product has high physical properties and good adhesion to the substrate. It can be cured at room temperature or by heating, and can be deeply cured. The two-component mixture has good fluidity and excellent flexibility after curing. It is used for casting and sealing of communication equipment, transformers, control power supplies, ignition controllers, electronic sensors, etc. Low viscosity, strong operabilityExcellent low-temperature characteristics and outstanding weather resistanceExcellent electrical insulation and stability stabilityGood waterproof and moisture-proof properties, with extremely low water absorption rateHas good adhesion to…

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Elaplus Case Study on Waterproof and Airtight Protection of Automotive Integrated PCB

2025-04-07

Against the backdrop of rapid development in automotive electronic applications, automotive integrated PCBs, as the core carrier of electronic products, are facing increasingly stringent environmental challenges. How to ensure that PCBs can maintain stable working conditions even when exposed to external factors such as moisture, dust, chemical corrosion, and mechanical impact has become a key concern for engineering and manufacturing personnel. For this reason, Yilian chose RTV SIPC 1859 dealcoholized silicone adhesive sealant as the solution. Through its application in PCB frame sealing and buckle fixing, it successfully built a sturdy waterproof, airtight, and mechanical protection barrier for automotive electronic systems. Waterproof and airtight protection of automotive integrated PCB With the continuous improvement of automotive intelligence and electronic system integration, automotive integrated PCBs play a crucial role in key components such as in vehicle networks, sensors, and control units. However, during the operation of automobiles, integrated PCBs often face severe challenges in the following aspects:Waterproof and airtight requirements: During driving, cars not only need to deal with the invasion of rainwater, car wash water, and humid environments, but also need to prevent water vapor and dust from entering the interior through the gaps of the PCB shell, which can cause corrosion and damage to the circuit board and components.Frame sealing and buckle fixation: To ensure the sealing effect, the PCB frame must be tightly sealed; Meanwhile, enhancing the stability and seismic resistance of the overall structure through buckle fixation is a necessary means to ensure the normal operation of electronic products in complex environments such as vibration and thermal shock.Environmental adaptability: The working temperature range of automotive integrated PCBs is usually wide, and stable mechanical and electrical properties must be maintained from low temperature environments (-60 ℃) to high temperature environments (300 ℃). Sealing materials are required to have excellent…

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Potting Compound for Automotive Connector

2025-04-01

Automotive connectors are an important component of automotive electronic systems, mainly used to transmit electrical signals and power, ensuring stable connections between various electronic devices. They are designed to be compact, durable, and have features such as waterproof, dustproof, and shockproof to adapt to complex in car environments. Widely used in engine management, vehicle electronics, intelligent driving and other fields, automotive connectors play a key role in ensuring vehicle safety and high-performance operation.What is connector encapsulation?The sealing process refers to the use of epoxy adhesive, resin, or other similar compounds to fill a certain area into a hard and stable state, thereby forming an effective barrier. In the field of connectors, the encapsulation process is usually used on the back of the connector, which is called back encapsulation. Its main purpose is to enhance the overall firmness of the connector, improve retention force through encapsulation, ensure a more stable connection, and provide additional protection for cables and contacts.The main protective function of connector encapsulation compoundsWaterproof: Block moisture penetrationCorrosion resistance: resist chemical corrosionAnti wear: Extend service lifeHigh temperature resistance: to cope with hot environmentsThermal shock resistance: resisting the effects of sudden temperature changesAnti vibration: maintain stable connectionResistance to mechanical impact: providing additional structural supportThe best time to use connector encapsulation and protective coatingConnector back design: Typically designed with retaining walls or extension walls to accommodate liquids when the potting compound solidifies.Cover protection: Cable connectors are generally equipped with a cover, and sealing can be carried out inside the cover to enhance overall protection.Temporary retaining wall: A temporary retaining wall can be built around the rear of the connector to ensure that the sealing compound does not overflow during the curing process.Special layout: For situations where not all contacts are wired, designing appropriate encapsulation channels can help the compound flow through the…

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Lithium battery hard pack PACK application: square battery solder joint protection and aluminum shell blue film back adhesive solution

2025-03-31

Against the backdrop of global energy transition and rapid development of new energy vehicles, the application of lithium batteries as core energy storage technology is becoming increasingly widespread. Especially in hard pack (or soft pack) PACK systems, square batteries have become one of the mainstream. Their high energy density, long cycle life, and high safety have made them widely used in fields such as electric vehicles (EVs), energy storage, and consumer electronics. However, with the increasing demand for applications, lithium batteries also face many technical challenges in production, use, and maintenance, especially in terms of solder joint protection and shell sealing. Classification and challenges of lithium batteriesLithium batteries can be mainly divided into the following types:Cylindrical batteries: commonly found in consumer electronics and some small and medium-sized power tools. Its structure is simple, the production process is mature, and it can provide good stability.Square battery: commonly used in electric vehicles (EVs) and energy storage devices. The advantages of square batteries are high energy density, customizable volume, and compact structure, making them suitable for large-scale battery pack applications.Soft pack battery: It has a wide range of applications in the field of electric vehicles, especially in some high-end models. It adopts flexible packaging, which can improve the design flexibility of battery packs to a certain extent, reduce volume and weight.Although square batteries perform well in many applications, they also face some technical challenges in practical use, mainly reflected in solder joint protection, aluminum shell packaging, and issues such as high temperature and vibration that the battery may encounter during use. If these challenges are not properly addressed, they may affect the safety, reliability, and lifespan of batteries.Challenge: Protection of solder joints in square batteries In the PACK design of square batteries, solder joints are important parts for connecting the various units inside…

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Elaplus sealing for junction box with organic silicon CIPG

2025-03-31

In the fields of new energy, power electronics, automobile manufacturing, etc., junction boxes, as the core protection unit of circuit systems, have long faced problems such as waterproof failure, insulation degradation, temperature difference deformation and cracking. Traditional sealing materials are difficult to meet the requirements of complex working conditions due to poor weather resistance and insufficient bonding strength. How to choose a solution that combines long-lasting sealing, stable insulation, and extreme environmental resistance? Glue requirements1： CIPG2: Plaster thixotropy3: Waterproof and insulatedRecommended productsElaplus SIPA 1820 is a paste thixotropic single component silicone adhesive that is heat cured, environmentally friendly, non-toxic, and easy to use. After curing, it forms a silicone elastomer with excellent high and low temperature resistance, weather resistance, electrical insulation performance, as well as excellent waterproof, earthquake resistance, absorption of expansion and contraction, corona resistance, and leakage resistance. Specially designed to provide long-lasting thermal stability bonding for various metals, glass, silicone rubber, plastics, mica sheets, and ceramic substrates.Product characteristics■ Temperature resistance -60 ℃~+280 ℃Single component thixotropic paste, fast heating and curing■ Can bond a large number of substrates without the need for a primer■ Has excellent flexibility and tear resistance■ Additive curing system: no curing by-products■ ROHS/REACH certifiedTypical applicationsAdhesive bonding between plastic shell and aluminum plateSealing of steam chamber for electric ironElectric vehicle water pump seal■ Motor control box CIPG■ Bonding of heating elementsIn emerging fields such as smart grids, energy storage systems, and 5G base stations, Elaplus SIPA 1820 is becoming the trusted choice for engineers to cope with harsh environments with its three in one performance matrix of “sealing insulation protection”. Free sample application and customized process plan * * are now open. Click on the official website or scan the code to obtain the technical white paper.label: CIPG Sealing Solution · Junction Box Sealing · New…

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Industrial sensor probe wire harness encapsulation: PUR 1670 is designed for harsh high and low temperature environments

2025-03-31

In fields such as industrial automation, automotive electronics, and new energy, sensors serve as the “nerve endings” for data acquisition and system control, and their reliability directly determines the operational efficiency and safety of equipment. As the core carrier of signal transmission, the sensor probe harness is exposed to complex environments such as vibration, temperature difference, humidity, and chemical corrosion for a long time. How to achieve long-term sealing protection of the harness through encapsulation technology has become a key focus of industry technological research.1、 Industry pain point: The rigorous challenge of PVC wire harness encapsulationPolyvinyl chloride (PVC) is widely used as an insulation layer for industrial sensor wiring harnesses due to its low cost, good flexibility, and corrosion resistance. However, traditional potting materials often face the following challenges when bonding PVC substrates:Insufficient adhesion: Long term vibration or bending of the wire harness can easily cause delamination between the adhesive and PVC, leading to sealing failure;Poor temperature adaptability: Colloids become brittle and crack at extreme low temperatures, and soften and deform at high temperatures, making it difficult to meet the industrial requirements of -40 ℃~85 ℃;Weak impact resistance: The thermal expansion and contraction stress caused by equipment start stop or sudden environmental changes accelerates the cracking of the sealing layer.These issues not only affect the stability of sensor signal transmission, but may also cause equipment failures or even safety accidents. Therefore, a sealing adhesive that combines strong adhesion, wide temperature range stability, and impact resistance has become an urgent need in the industry. Why do we need high-quality potting materials?In industrial applications, sensor probe harnesses are typically exposed to various harsh environments, including high and low temperatures, humidity, vibration, and chemical corrosion. These external factors can easily cause the wiring harness to age, crack, or detach, thereby affecting the normal…

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