行业组件数据 · 2026

固化剂

Chemical agent that initiates and accelerates the curing process of epoxy resins in electrical insulation applications.

技术定义与适配语境
典型 固化剂 会按材料、尺寸公差、适配关系和失效风险在 电气设备制造 中评估。

A curing agent, also known as a hardener, is a chemical compound that reacts with epoxy resin to form a cross-linked polymer network through polymerization. In electrical insulation epoxy resin compounds, it transforms the liquid resin into a solid, thermoset material with excellent dielectric strength, thermal stability, and mechanical properties. The curing process is typically exothermic and can be controlled by adjusting the agent's type, concentration, and curing conditions to achieve optimal insulation performance.

组件规格

定义
A curing agent, also known as a hardener, is a chemical compound that reacts with epoxy resin to form a cross-linked polymer network through polymerization. In electrical insulation epoxy resin compounds, it transforms the liquid resin into a solid, thermoset material with excellent dielectric strength, thermal stability, and mechanical properties. The curing process is typically exothermic and can be controlled by adjusting the agent's type, concentration, and curing conditions to achieve optimal insulation performance.
工作原理
The curing agent initiates a chemical reaction (usually addition or condensation polymerization) with epoxy resin's epoxide groups. This reaction forms covalent bonds, creating a three-dimensional cross-linked network. For electrical insulation, this network provides structural integrity, high resistivity, and resistance to electrical tracking, partial discharge, and thermal degradation. Common mechanisms include amine-epoxy reactions (for ambient or heat-cured systems) or anhydride-epoxy reactions (for high-temperature applications).
材料
Typically composed of amines (e.g.aliphaticcycloaliphaticor aromatic amines)anhydridesphenolsor catalytic hardeners. May include additives like acceleratorsfillers (e.g.silicaalumina)or modifiers to enhance electrical propertiesthermal conductivityor flame retardancy. Formulations are optimized for low ionic impurity content to maintain high dielectric strength.
Pot Life
30 minutes to 4 hours at 25°C
Cure Time
2 to 24 hours at ambient temperature, or 1 to 4 hours at elevated temperatures (e.g., 80-150°C)
Viscosity
100 to 5000 mPa·s at 25°C
Chemical Type
Amine-based or Anhydride-based
Volume Resistivity
>1e12 ohm-cm
Dielectric Strength
15 to 25 kV/mm
Thermal Conductivity
0.2 to 1.5 W/m·K
Mix Ratio (Resin:Hardener)
100:10 to 100:50 by weight
Operating Temperature Range
-40°C to 180°C
Glass Transition Temperature (Tg)
80°C to 180°C
标准
ISO 6722ISO 14572DIN EN 60455DIN 53480

行业分类与别名

固化剂 的常用贸易名称、技术标识和检索关键词。

上级产品

该组件会出现在以下整机或工业产品中。

FMEA · 风险与缓解

诱因 → 失效模式 → 工程缓解

Inaccurate weighing or mixing of resin and hardener->Poor cross-linking, resulting in low Tg, high dielectric loss, and premature insulation failure under electrical stress->Use automated dispensing systems with precision meters, conduct regular calibration, and implement batch testing for cure degree via FTIR or DSC analysis.
Exposure to humidity during storage or processing->Hydrolysis of curing agent, causing blisters, reduced adhesion, and increased leakage current in insulated parts->Store in sealed, moisture-barrier containers with desiccants, control workshop humidity below 50% RH, and pre-dry components before potting.
Inadequate cure temperature or time->Under-cured epoxy with weak mechanical strength and susceptibility to electrical tracking, leading to short circuits->Follow manufacturer's cure schedule strictly, use ovens with uniform temperature distribution, and monitor with embedded thermocouples for large castings.

工业生态与工程逻辑

0
Incomplete curing leading to reduced dielectric strength
1
Exothermic runaway causing thermal damage to components
2
Moisture absorption degrading insulation properties
3
Incorrect mix ratio causing soft spots or brittleness
4
Chemical incompatibility with substrates or fillers

合规与检测

tolerance
Mix ratio tolerance typically ±2% by weight; cure temperature tolerance ±5°C; dimensional stability per ISO 2577 with <0.5% shrinkage
test method
Dielectric strength tested per IEC 60243-1; volume resistivity per IEC 60093; thermal analysis (DSC) for Tg measurement; FTIR for cure degree; ionic contamination via extraction and conductivity measurement

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采购评估维度

不是客户评论,也不是实时热度。以下维度用于前期 RFQ 准备和供应商评估。

技术文档
4/5
制造能力
4/5
可检验性
5/5
供应商透明度
3/5

这些分值是采购评估维度示例,不代表真实客户评分、具体国家买家反馈或实时询盘。

相关组件

常见问题

What is the difference between amine and anhydride curing agents for electrical insulation?

Amine-based agents cure at lower temperatures (ambient to 80°C) and offer good mechanical strength, while anhydride-based agents require higher temperatures (100-150°C) but provide superior thermal stability, lower exotherm, and better electrical properties like reduced dielectric loss, making them ideal for high-voltage applications.

How does pot life affect the application of curing agents in insulation systems?

Pot life determines the working time after mixing resin and hardener. Short pot lives (e.g., 30 minutes) require rapid processing to avoid premature gelation, which can trap air bubbles and reduce dielectric strength. Long pot lives allow for complex potting or impregnation but may slow production. It must be balanced with cure time for optimal insulation quality.

What are key compliance tests for curing agents in electrical equipment?

Key tests include dielectric strength per IEC 60243, volume resistivity per IEC 60093, thermal cycling resistance, flame retardancy (UL 94), and ionic contamination testing to ensure low chloride and sodium levels, which prevent corrosion and electrical leakage in insulated components.

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CNFX Industrial Component Index · 电气设备制造

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URN:CNFX:ME:UNIT:CURING_AGENT