Guangzhou Feisi Launches FS7380 Water-Based Epoxy Composite Adhesive, Solving Mass Production Challenges for Interlayer Bonding of Amorphous Ribbons
Single-component, water-based eco-friendly system that streamlines the entire process from coating to drying to thermal curing, providing non-crystalline core manufacturers with a low-loss, high-strength, and green-compliant interlayer insulation solution.
1. Industry Pain Points: Three Major Hurdles Limiting Mass Production of Amorphous Iron Cores
Against the backdrop of surging demand for new energy PV inverters, energy storage inductors, high-frequency amorphous motors, and energy-efficient distribution transformers, amorphous cores have become the industry's mainstream solution thanks to their ultra-low core loss. However, most manufacturers remain constrained by forming and processing challenges, facing severe difficulties in mass production yield rates and cost control:
难点一：材料加工难度大 非晶带材厚度仅 20~30μm，硬度高、塑性差、质地极脆。裁切、冲压、绕制全过程极易产生崩边、分层、碎料断条，成品良率偏低。冲压模具损伤消耗大，加工成本居高不下。
Challenge 2: Poor structural stability of finished products. Simple laminated sheet structures are loose, causing the strips to easily shift and disintegrate during assembly or long-term vibration operation. This leads to core performance failure or total scrap, resulting in significant production cost losses.
Challenge 3: Escalating Environmental Compliance Pressure. Traditional solvent-based adhesives emit high VOCs and cause strong odors in the workshop, requiring expensive exhaust gas treatment equipment. Export orders face barriers from RoHS/REACH environmental testing, hindering market expansion for internal and external sales of iron cores.
【要点提炼】非晶带材高效复合成型技术——同时解决"降低脆性、提升冲片效率、保证层间绝缘"——已成为非晶铁芯厂商的迫切需求。广州飞思针对性研发的 FS7380 非晶带材用水性环氧复合胶，以单组份水性环氧乳液体系，一站式打通涂覆、干燥、热压固化全流程，同步解决电磁性能与环保生产的双重难题。
二、FS7380 核心定位：专为非晶带材层间复合定制的环保绝缘胶
FS7380 由特种水性环氧树脂、配套专用固化剂、功能性助剂、去离子水复配而成，单组份成品无需现场调配，操作简单，即开即用，全面适配全自动辊涂产线。
配方纯净：不含无机盐、无机填料，涂层轻薄，不干扰磁导率及磁性能
Eco-Compliance: Low odor, low VOC. Fully cured coating meets EU RoHS and REACH regulations; suitable for both domestic and international cores.
Process-friendly: Features a self-adhesive layer after drying for stable multi-layer alignment. High-temperature hot pressing significantly enhances core strength and isolates interlayer corrosion.
3. Four Core Advantages: Balancing Low Loss with Eco-Friendly Mass Production
High insulation with low eddy current losses reduces noise and improves energy efficiency. After curing, the coating surface resistivity is ≥2000 Ω·mm²/lam., forming a uniform insulating barrier that effectively blocks interlaminar eddy currents. This significantly lowers no-load losses in iron cores and reduces operating noise in motors and transformers, ensuring stable long-term performance for high-frequency new energy equipment.
Full water-based eco-friendly system significantly reduces environmental compliance costs. Using water as the dilution medium, VOC content is minimal—no irritating odors in the workshop. Equipment cleans with tap water alone; no specialized solvents needed. No expensive exhaust treatment required—pass environmental reviews easily and export without any compliance hurdles.
初粘稳定 + 高强度剥离，减少分层不良 涂覆烘干后自带粘性，叠片过程不易滑移错位；热压固化后浮辊剥离力 ≥0.15 N/mm，铁芯整体粘结牢固，转运、装配、长期运行不易开裂分层，有效提升量产良品率。
Dual-Temperature Resistance: Engineered for High-Temp Curing and Harsh Conditions Coating achieves dual certification: Bond strength meets Class F (155°C); Surface resistance meets Class H (180°C). Perfectly compatible with industry-standard 200~250°C curing processes, maintaining stable insulation performance under prolonged high-temperature operation.
四、全套标准化性能参数（国际标准检测）
Base Specifications for Paint Base Liquid (at 25°C Standard Environment)
Appearance: Uniform milky-white liquid (no separation, no sediment)
固含量：30% ± 2%（水基单组份体系）
粘度（25℃）：可调范围（适配辊涂工艺需求）
pH 值：7.0 ~ 9.0（中性偏碱，对基材无腐蚀）
Coating performance after drying (wet film 2.0μm, double-sided application)
Appearance: Colorless and transparent
干膜厚度：1.0 μm
Coating density: 1.2 g/cm³
表面电阻：＞2000 Ω·mm²/lam.
Peel Strength: ≥0.15 N/mm
Key Coating Performance Metrics After High-Temperature Curing
外观：无色透明薄层
Interlayer insulation resistance: ≥2000 Ω·mm²/lam.
耐热等级（粘结强度）：F 级（155℃）
Temperature Rating (Surface Resistance): H (180°C)
5. Standardize implementation processes to support roller coating across the entire range of light rollers and grooved rollers.
FS7380 Complete Production Process: Four Stages, Standardized Parameters Ready for Automated Manufacturing Lines
Step 1: Coating. Apply a wet film thickness of 3.06 μm for single-sided roller coating, or a total wet film thickness of 2.03 μm for double-sided roller coating. Slot-die roller processing uses deionized water for on-site dilution; the dilution ratio is determined through on-site trials based on roller groove dimensions.
第二步：干燥除水 在线烘干，去除水分，形成粘性胶层。
第三步：多层压合 带材叠片定位，预压成型。
第四步：高温固化 200~250℃ 热压固化，铁芯强度大幅提升。
【重要提示】FS7380 不含无机填料，不可用于发蓝、退火热处理工序。选型前建议联系广州飞思技术团队确认工况适配性，避免误用。
6. Production Line Usage and Storage & Transportation Best Practices
Device and Operation Guidelines:
设备材质：储料罐、循环管道、涂覆辊全部选用不锈钢材质，避免生锈污染涂料、产生水渍瑕疵
基材预处理：非晶带材涂覆前保持洁净干燥，带材表面温度控制 <40℃
Paint Application: Apply at ambient temperatures between 15 and 25°C. Stir thoroughly before use. When switching to a different paint, thoroughly clean the entire coating unit with demineralized water.
Equipment Cleaning: If the coating is not fully cured, flush the lines with water. After opening the cover, seal the circulation tank and clean the equipment immediately after shutdown. Note: Once the coating hardens completely, it no longer dissolves in water and can easily clog the lines!
Packaging and Storage & Transportation:
包装规格：200kg 不锈钢桶、1000kg IBC 吨桶，按需定制
储存条件：0~30℃ 干燥通风室内，避光、远离热源火源
After opening: Use within 1 months. Seal the lid tightly after each use.
Shelf life: 4-6 months when stored sealed at 25°C
7. Guangzhou Feisi: One-stop material and process technology support services
广州飞思材料科技有限公司深耕磁性材料专用水性环氧绝缘涂料研发生产，自有标准化材料实验室与自动化生产线，专注为非晶、纳米晶铁芯厂商提供定制化粘结、绝缘涂层解决方案。
End-to-end support:
免费试样测试 —— 匹配不同牌号非晶带材、各类辊涂设备，验证工艺适配性
工程师上门调试 —— 优化涂覆、固化工艺参数，降低试产损耗，缩短量产爬坡周期
全套技术资料 —— 技术说明书、第三方检测报告同步提供，满足客户多样化资料需求
批量稳定供货 —— 库存充足，交付周期短，保障产线连续运行