Overview
Insulating glue is a critical material in electrical and electronic industries, formulated to combine adhesive properties with electrical insulation. Unlike standard adhesives, it contains non-conductive fillers like silica or ceramics to block current flow. Modern variants often use epoxy, silicone, or polyurethane bases for tailored performance. These adhesives undergo rigorous testing for dielectric strength (typically 10-30 kV/mm) and thermal endurance (up to 180°C for high-grade types). They play a vital role in preventing short circuits and maintaining signal integrity in sensitive electronics, from consumer devices to industrial equipment.
Physical and Chemical Properties
Insulating glues exhibit low ionic impurity content (<50 ppm) to ensure minimal conductivity. Their viscosity ranges from 500 to 50,000 cP for different application methods—syringe dispensing, screen printing, or dip coating. Thermal expansion coefficients are engineered to match common substrates (e.g., FR4, ceramics) to prevent mechanical stress. Key chemical attributes include halogen-free formulations for eco-sensitive applications and UL94 V-0 flame ratings for safety. Cure mechanisms vary: single-component types require heat (80-150°C), while two-part systems cure at room temperature with pot lives of 30-120 minutes.
Main Applications
In PCB manufacturing, insulating glue secures components while isolating high-voltage traces. Motor and transformer producers use it for coil fixation and slot insulation, where it withstands electromagnetic vibrations. Solar panel assembly relies on UV-resistant varieties for junction box sealing. The automotive sector employs thermally conductive but electrically insulating grades for battery pack assemblies. Industrial applications include bonding insulators in switchgear and potting high-voltage connectors. Consumer electronics utilize low-outgassing types for sensitive microelectronics to prevent corrosion.
Safety and Storage
Uncured insulating adhesives may contain volatile organic compounds (VOCs)—adequate ventilation or fume extraction is mandatory. Storage life ranges from 6-24 months; moisture-sensitive types require desiccant packs. Exothermic reactions during curing necessitate careful volume control for thick applications. Disposal must comply with local regulations for chemically cured resins. Spill management involves inert absorbents (vermiculite) rather than water rinsing. Personal protective equipment (PPE) including nitrile gloves and safety goggles is essential during handling.
B2B Procurement Guide
Industrial buyers should specify: dielectric strength (AC/DC ratings), thermal conductivity needs, and applicable standards (e.g., IEC 60454, MIL-A-87172). For automated production, parameters like dispense viscosity and tack-free time are critical. Supplier audits should verify ISO 9001 certification and batch-to-batch consistency testing. Minimum order quantities (MOQs) for specialty formulations often start at 25 kg. Technical datasheets must include volume resistivity (>1×10¹³ Ω·cm) and comparative tracking index (CTI) data for high-voltage applications.
Related Manufacturers
- 主营：碳化硅修补剂、金属修补剂、钢质修补剂、高温胶水、皮带胶、快速橡胶修补剂、金属导电胶水、高温密封胶、耐磨陶瓷颗粒胶、高温环氧树脂胶水、PP胶水、PU胶水、铁质修补剂、铝质修补剂、铜质修补剂、轴承位修补剂、轴磨损修补剂、高温修补剂、电泳导电修补剂、搪瓷修补剂、搪瓷反应釜修补剂、高温搪瓷釜修补剂、铸钢修补剂、导轨修补剂、模具修补剂
- 主营：胶水
- 主营：abs胶水、修复胶、金属胶、瞬间胶、结构胶、堵漏胶、ab胶、快干胶、皮革胶水、UV胶、密封胶、pvc胶水、不锈钢胶水、塑料胶水、强力胶、海绵胶水、eva胶水、橡胶胶水、pp胶水、环氧树脂胶、高温胶水、焊接胶、铸工胶、喷胶、修补剂
- 主营：钢结构防火涂料、厚型钢结构防火涂料、室内外膨胀型防火涂料、防火密封胶、防火板、厚型防火涂料、石膏基防火涂料、室外钢结构防火涂料、防火泥、阻火包、阻火模块、薄型钢结构防火涂料、膨胀型钢结构防火涂料、室内膨胀型防火涂料、膨胀型防火涂料、超薄型钢结构防火涂料
- 主营：卡夫特代理、台湾施敏打硬代理、乐泰代理、施敏打硬AB胶、磁路胶、喇叭胶、四氟防腐胶水、钢衬四氟防腐胶水、卡夫特硅胶、环氧AB胶、密封胶、瞬干胶、导热硅胶、卡夫特丙烯酸AB胶、卡夫特黄胶、导热凝胶、卡夫特PUR热熔胶、UV胶、卡夫特导电胶、金属胶、高温胶、施敏打硬Y-358AB、施敏打硬575H、卡夫特导热硅脂、卡夫特密封脂
- 主营：脱模剂、聚氨酯、电路板、快干胶、rtv硅胶、密封胶、瞬间胶、硅橡胶、胶粘剂、结构胶、密封硅胶、莫斯胶水、陶瓷胶水、塑料橡胶、强力胶水、固化胶水、灌封胶水、木头胶水、透明环氧、塑料陶瓷、环氧树脂、运动器材、电子防潮、汽车配件、复合材料
- 主营：环氧树脂AB胶、UV胶水系列产品、PUR热熔胶、快干胶/舜干胶
- 主营：固持胶、结构胶、胶水螺纹胶、玻璃陶瓷无影胶、塑胶粘接金属胶、环氧树脂、aa326结构粘合剂
- 主营：环氧水晶胶、弧面胶、平面胶、仿真水胶、环氧粘胶、UV胶、平面软胶、弧面软胶、环氧色浆
- 主营：恒温烤箱、老化试验箱、高低温试验箱、45绝缘胶、紫外线老化箱、恒温恒湿试验箱、步入式试验箱、盐雾试验箱、卧式插拔试验机
- 主营：搪瓷修补剂、高温搪瓷反应釜修补剂、轴承位修补剂、衬胶修补剂、衬胶脱硫管道修补剂、耐磨陶瓷颗粒胶、小颗粒耐磨陶瓷胶、大颗粒耐磨陶瓷胶、橡胶修补剂、冷硫化橡胶粘接剂、快干胶、塑料胶水、环氧树脂结构胶、pp胶水、聚氨酯专用胶、高温胶水、金属胶水、轴磨损修补剂、碳化硅耐磨修补剂、碳化硅修补剂、液压油缸修补剂、金属修补剂、钢质修补剂、铝质修补剂、电泳导电修补剂
- 主营：尼龙PA板棒、聚甲醛POM板棒片、聚酰亚胺PI板棒、绝缘PI胶水、四氟PTFE板棒、聚丙烯pp板棒、高分子聚乙烯hdpe板棒、聚氯乙烯PVC板棒、一氟Pfa板棒、二氟PVDF板棒、三氟PCTFE板棒、聚醚酰亚胺PEI板棒、聚砜PSU板棒、聚苯砜PPSU板棒、聚苯硫醚PPS板棒、聚酯PET板棒、聚酯PBT板棒、POM+PTFE板棒、聚碳酸酯PC板棒、亚克力PMMA板棒、聚酰胺酸PAA溶液、HPP板棒、ABS板棒
- 主营：透水管、复合膜、塑料板、灌封胶、混泥土、防渗膜、防裂贴、土工布、抗裂贴、机织布、土工膜、模具袋、生态袋、排水板、聚乙烯、防水毯、模袋布、椰丝毯、20高凹凸、3d固土垫、检测标准、复合两布、水泥膜袋、绿化施工、塑料格栅、土工滤网
- 主营：电子电器胶、工业硅酮胶、耐高温密封胶、厌氧胶、工业密封胶、工业高温胶、导热硅胶、汽车密封胶、平面密封胶、平面厌氧胶、紫外光固化胶、灯具胶、聚氨酯胶水、耐黄变胶水、汽车免垫胶、耐油密封胶、密封胶代工、导热硅脂
- 主营：水性不干胶油性不干胶、电镀保护胶阻镀漆、喇叭胶、螺丝胶、塑料胶水、金属结构胶、瞬间胶、AB胶水、阻燃胶、排线胶