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Application of adhesive sealant | Sealing of resistor cavity

2025-02-12

Background and ChallengesThe stability of electronic components is crucial in high-temperature environments. A well-known electronic manufacturer is facing the challenge of sealing the resistor cavity when producing high-performance resistors. Traditional sealing materials are prone to aging at high temperatures, leading to seal failure and affecting product performance and lifespan.Application of adhesive sealant | Sealing of resistor cavity customer demandFunctional requirement: Temperature resistance up to 230 ℃, ensuring long-term stable operation in high-temperature environments.Viscosity range: 15000-25000 CPS, meeting the requirements for precise coating.Product SolutionsTo meet the high temperature sealing needs of customers, ELAPLUS recommends SIPC 1821 RTV neutral dealcoholized silicone adhesive sealant. This product has the following advantages:RTV SIPC 1821 neutral dealcoholized silicone adhesive sealant is a flowable moisture absorbing cured silicone gel that forms a flexible rubber body after curing, fully complying with the EU ROHS directive requirements. During the curing process, alcohol substances are released, which are non corrosive to materials such as polycarbonate (PC) and copper. They have good adhesive and sealing properties for the vast majority of materials, protecting electronic products in a stable state under harsh conditions. RTV SIPC 1821 silicone adhesive sealant cured elastomer has the following characteristics:✔ Single component, easy to use, short non stick time✔ Excellent chemical resistance✔ Resist moisture, dirt, and other atmospheric components✔ Reduce mechanical stress and tension caused by mechanical, thermal shock, and vibration✔ Excellent electrical insulation performance, anti corona✔ Excellent outdoor aging resistance, with a service life of up to 20-30 years✔ Stable mechanical and electrical performance between -60-260 ℃Elaplus SIPC 1821 RTV neutral dealcoholized silicone adhesive sealant has become an ideal choice for high-temperature sealing of electronic components due to its excellent high temperature resistance, environmental certification, and outstanding bonding performance. In the application of resistor cavity sealing, SIPC 1821 effectively solves the sealing challenge in high-temperature environments,…

What is thermal conductive silicone grease? What are the characteristics and uses?

2025-02-11

Thermal grease helps transfer heat between hot components such as CPUs and GPUs and cooling devices (usually heat sinks). This article explores the important role of thermal grease, including its composition, characteristics, and how to use it to ensure good heat transfer. We will discuss different types of thermal grease, including silicone, metal, ceramic, carbon based, and liquid metal, and how each grease meets specific needs. This article also explains the correct method of applying thermal grease on CPUs to avoid common errors and misconceptions, demonstrating its extensive role in maintaining the stability and efficiency of electronic devices. How does thermal grease enhance thermal conductivity?Thermal grease, commonly known as thermal paste, plays an important role in controlling the heat of electronic devices. Its main function is to facilitate heat transfer from hotter components (such as CPUs or GPUs) to cooler components (such as heat sinks) by filling the air gaps between surfaces. At the molecular level, there are several mechanisms that can explain how thermal oils improve thermal conductivity:The surfaces of heat sources (such as CPUs) and heat sinks may appear smooth to the naked eye, but in reality, they are rough and uneven on a microscopic scale. These uneven areas will create small air gaps when in contact with the surface, which will hinder heat transfer as air is a poor conductor of heat. Thermal grease will fill these air gaps and replace air with materials with much higher thermal conductivity, thereby improving heat transfer efficiency. Thermal conductive grease is made by mixing basic materials such as silicone or synthetic oil with thermal conductive particles such as metal, ceramic, or carbon. These particles form a thermal conduction pathway network in the oil, allowing heat to propagate more efficiently than through the base material alone. This network improves the overall…

High frequency sound channel sealing/cover shell sealing

2025-02-11

In modern electronic device manufacturing, high-frequency sound channel sealing and cover shell sealing are key links to ensure device performance and reliability. Organic silicone adhesive sealant has become an ideal choice in this field due to its excellent physical and chemical properties. This article will focus on the application of silicone adhesive sealant in high-frequency sound channel sealing/cover shell sealing, and discuss in detail the functional requirements, viscosity range, and specific model selection of Elaplus.High frequency sound channel sealing/cover shell sealing. Functional requirements(1) Smooth appearanceIn the sealing of high-frequency head channels and cover shell, a smooth appearance is an important functional requirement. Organic silicone adhesive sealant can form a uniform and smooth surface after curing, which not only improves the appearance quality of the product, but also helps prevent the accumulation of dust and impurities, thereby extending the service life of the equipment.(2) Low volatile matterLow volatile matter is another key functional requirement. Organic silicone adhesive sealant releases very little volatile matter during the curing process, which helps reduce environmental pollution and also avoids corrosion and damage to internal components of equipment.(3) 60 degree water bath has good air tightnessAir tightness is a crucial performance indicator in high-frequency head channel sealing and cover shell sealing. Organic silicone adhesive sealant can maintain good airtightness in a 60 degree water bath environment, ensuring stable operation of equipment in various harsh environments.Viscosity range(1) Semi fluidThe semi fluid state of silicone adhesive sealant has good fluidity, which can easily fill small gaps and complex geometric shapes, ensuring the uniformity and consistency of the sealing effect.(2) OintmentOrganic silicone adhesive sealant in paste state has high viscosity and strong adhesion, suitable for sealing occasions that require high mechanical strength and durability.Yilian model: SIPC 1859 silicone adhesive sealantRTV 1859 alcohol free silicone adhesive sealant is a neutral…

Silicone adhesive sealant | Application of sensor cover sealing

2025-02-11

In today’s era of widespread application of intelligent and automated equipment, sensors are almost ubiquitous and undertake key tasks such as monitoring, feedback, and control. However, in complex environments, poor sealing of sensor cover plates can lead to performance degradation and even affect the reliability of the entire system. Therefore, how to choose the appropriate sealant has become a key concern for engineers. SIPC 1823 black silicone adhesive sealant is an ideal choice for sensor sealing due to its excellent performance. Adhesive application point: bonding and sealing between the outer shell and the upper coverFunctional requirements: Adhesive PBT, fast curing speedViscosity range: 25000-50000ppsRecommended models for Elaplus:SIPC 1823 black silicone adhesive sealant 30000cpRTV SIPC 1823 neutral dealcoholized silicone adhesive sealant is a flowable moisture absorbing cured silicone gel that forms a flexible rubber body after curing, fully complying with the EU ROHS directive requirements. During the curing process, alcohol substances are released, which are non corrosive to materials such as polycarbonate (PC) and copper. They have good adhesive and sealing properties for the vast majority of materials, protecting electronic products in a stable state under harsh conditions. The cured elastomer of RTV 1823 silicone adhesive sealant has the following characteristics:▶ Single component, easy to use, short non stick time▶ Excellent chemical resistance▶ Resist moisture, dirt, and other atmospheric components▶ Reduce mechanical stress and tension caused by mechanical, thermal shock, and vibration▶ Excellent electrical insulation performance, anti corona▶ Excellent outdoor aging resistance, with a service life of up to 20-30 years▶ Stable mechanical and electrical performance between -60-200 ℃application area▶ Sealing of LED lamps, sealing of plastic metal shells; PCB board components and wiring harness fixation▶ Exquisite electronic accessories, waterproof coatings for electrical and communication equipment▶ Small modules, optoelectronic displays, and circuit boards, with thin layer sealing below 6mm and leak sealing▶…

Successful application of RTV SIPC 1816 in FDA sealing of kitchen pot lids

2025-02-11

1、 Case backgroundA well-known kitchenware brand faced an important challenge when launching a new kitchen lid: how to achieve efficient bonding and sealing between glass and stainless steel while meeting food safety standards (FDA requirements). This pot lid design requires a small bonding area, high construction accuracy, and excellent weather resistance and chemical resistance to adapt to the working environment of high temperature, humidity, and the presence of various chemicals in the kitchen.Kitchen lid sealing. 2、 Customer needs and challengesIn this project, the client mainly focuses on the following points:Food grade safetyDue to the direct contact of the product with food, the sealant must comply with FDA standards and meet environmental certification requirements such as ROHS, REACH, TSCA, and VOC to ensure health and safety during use.Material adhesionThe product involves the bonding of two substrates, glass and stainless steel, requiring the sealant to form a firm and stable bonding interface between different materials.Construction accuracyDue to the small bonding area and complex shape, high precision is required for dispensing. The sealant needs to have excellent thixotropy to ensure that the head and tail are fused without obvious breakage or defects during the dispensing process.Long term stabilityConsidering the particularity of the kitchen environment, after curing, the sealant should maintain good mechanical and electrical properties within the temperature range of -60 ℃ to 260 ℃, and have the characteristics of moisture resistance, chemical resistance, pollution resistance and aging resistance to ensure that the service life of the product can reach 20-30 years.Recommended model: SIPC 1816 gray silicone adhesive sealantRTV SIPC 1816 ketoxime type silicone adhesive sealant is a neutral silicone sealing material that absorbs moisture from the air and solidifies at room temperature. The product is environmentally friendly and has been certified by ROHS, Reach, TSCA, and VOC. It has good adhesion and…

Application of silicon adhesive sealant | Sealing of slip ring motor welding plate and lead wire sealing

2025-02-11

Slip ring motors are widely used in automation equipment, wind power generation, medical instruments, and other fields. Their stable operation relies on efficient solder plate sealing and lead wire sealing. The selection of sealing materials is crucial as motors are subjected to high temperatures during operation and may be affected by external environments such as dust, moisture, and vibration. Therefore, it is important to select the right sealing material. customer demandA certain motor manufacturer encountered the following technical challenges while producing slip ring motors:Sealing requirements: Ensure the reliability of welding plate sealing and lead sealing, prevent external pollutants from entering, and ensure long-term stable operation of the motor.High temperature resistance: The temperature of the motor may reach 150 ℃ during operation, so the sealing material needs to have excellent temperature resistance.Curing speed: Production efficiency requires the sealant to cure quickly to improve assembly efficiency.Suitable viscosity range: The sealant needs to have moderate fluidity, be easy to apply, and not sag.Solution Sealing of welding plates and sealing of leads for slip ring motorsFor the needs of this customer, we recommend using BaiGao SIPC 1821 (black, viscosity 25000 CPS) or SIPC 1823 (white, viscosity 35000 CPS) silicone adhesive sealant. These two products have the following advantages:RTV SIPC 1821 neutral dealcoholized silicone adhesive sealant is a flowable moisture absorbing cured silicone gel that forms a flexible rubber body after curing, fully complying with the EU ROHS directive requirements. During the curing process, alcohol substances are released, which are non corrosive to materials such as polycarbonate (PC) and copper. RTV SIPC 1821 silicone adhesive sealant has good bonding and sealing properties for the vast majority of materials. The cured elastomer has the following characteristics:▶ Single component, easy to use, short non stick time▶ Excellent chemical resistance▶ Resist moisture, dirt, and other atmospheric components▶ Reduce…

Case Study of Thin Layer Coating of Strain Gauge for Weighing Sensor

2025-02-06

backgroundWeighing sensors are widely used in industrial, commercial, and medical equipment, especially in high-precision weighing and dynamic load monitoring scenarios. These sensors typically use strain gauge technology to detect the weight or load of objects. It is crucial to protect strain gauges from external environmental influences in order to ensure their precise operation and long-term stability. Especially in harsh working environments such as high humidity, vibration, and temperature changes, strain gauges require effective protective measures to avoid damage or functional degradation. Application requirementsIn such applications, the main requirements of users are:Protecting strain gauges: As the core component of sensors, strain gauges must maintain high sensitivity and accuracy, and cannot be disturbed by external environments such as moisture, dirt, etc.Good insulation: As weighing sensors involve electrical measurements, good electrical insulation performance is crucial to avoid electrical interference and errors.Flexibility: Due to the mechanical stress that strain gauges need to withstand, the protective adhesive layer must have sufficient flexibility to reduce mechanical stress caused by vibration or temperature changes.Viscosity requirement: In order to ensure that the adhesive dots can evenly cover the surface of the strain gauge, the viscosity range should be controlled between 12000-15000 CPS to ensure the uniformity and flowability of the coating.Thin layer coating of strain gauges for weighing sensorsSolution: SIPC 1812 low viscosity series organic silicone gelIn response to the above requirements, SIPC 1812 low viscosity series organic silicone provides a perfect solution. This product uses oxime free organic silicon adhesive material, which has a series of excellent properties and can meet the high requirements of weighing sensors in harsh environments.The SIPC 1812 series sealant absorbs moisture from the air at room temperature and solidifies. It is a deoxime type silicone adhesive sealant made of special silicone rubber material as the base material and cannot be cured by…

Elaplus application case sharing: Sealing of household appliance visible windows

2025-02-06

In the home appliance industry, many devices such as microwave ovens, ovens, etc. adopt window design, allowing consumers to observe the cooking process of food in real time. In order to ensure the safety and sealing of visual windows during long-term high-temperature operation, home appliance manufacturers have put forward strict requirements for sealing materials. Especially at the connection between glass and metal powder coated parts, the selection of sealant is crucial. Yilian SIPC 1826 high-performance sealant has demonstrated outstanding application effects in this field due to its excellent characteristics.Background requirements. The main technical challenge in the sealing application of household appliance windows is the sealing problem between glass and metal powder coated parts. Due to the high temperature environment in which the visual window operates, the sealant must meet the following key performance requirements:

Detailed introduction and selection guide for adhesive used for coil fixation

2025-01-17

As a key component in equipment such as motors, transformers, sensors, and wireless charging modules, the stability of coils has a significant impact on the performance and lifespan of the entire device. Choosing the appropriate adhesive is particularly important to ensure the fixing effect of the coil and the safe operation of the equipment. This article will provide a detailed introduction to the types, performance requirements, application scenarios, and recommended products of coil fixing adhesives to help you find the best solution. Common types of adhesive used for coil fixationAccording to different application requirements, the commonly used adhesives for coil fixation mainly include epoxy adhesive, organic silicone adhesive, polyurethane adhesive, and acrylic adhesive. These adhesives have their own characteristics and can meet the fixed requirements of different scenarios.Epoxy adhesive is a type of adhesive known for its high strength and high temperature resistance. Its two-component or single component formula design is suitable for coil fixing applications such as motors and transformers that require high adhesion and insulation performance.Organic silicone stands out for its excellent flexibility, aging resistance, and resistance to mechanical stress, and is widely used in scenarios that require high resistance to vibration and high and low temperatures.Polyurethane adhesive combines high flexibility and impact resistance, making it ideal for devices where coils are sensitive to impact and vibration.Acrylic adhesive has fast curing speed and high bonding strength, making it suitable for applications in fast production lines.Key performance requirements for coil fixing adhesiveWhen selecting coil fixing adhesive, multiple performance requirements need to be considered to ensure the stability of the coil during long-term operation. Firstly, adhesive performance is the core indicator, and the adhesive needs to have strong adhesion to substrates such as copper, aluminum, iron cores, plastics, ceramics, etc., and be able to pass the pull-out test. Secondly, mechanical…