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High Dielectric Strength Epoxy Resin with H-Class Thermal Stability and Superior Crack Resistance for Electrical Insulation

High Dielectric Strength Epoxy Resin with H-Class Thermal Stability and Superior Crack Resistance for Electrical Insulation

High Dielectric Strength Epoxy Resin

H-Class Thermal Stability Electrical Insulation Resin

Superior Crack Resistance Epoxy Resin System

원래 장소:

중국

브랜드 이름:

WENYOU

인증:

REACH/RoHS/UL/ISO/CE

모델 번호:

LE-9219K/LH-9219K

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제품 상세정보
애플리케이션:
전기 절연
특징:
방수, 고품질
내열성:
높은
충격 강도:
높은
가연성:
HB 클래스
내화학성:
훌륭한
지불과 운송 용어
최소 주문 수량
20kg
지불 조건
L/C,T/T,웨스턴 유니온,머니그램
제품 설명
Epoxy Resin for Indoor High-Voltage Switchgear Bushings Transformers
Product Attributes
Attribute Value
Application Electrical Insulation
Feature Water Resistance, High Quality
Heat Resistance High
Impact Strength High
Flammability HB Class
Chemical Resistance Excellent
Product Description

The LE-9219K/LH-9219K is a high-performance two-component epoxy resin system designed for medium/high-voltage electrical insulation (12-40.5 kV). Formulated with modified BPA epoxy resin (LE-9219K) and carboxylic anhydride hardener (LH-9219K), it delivers exceptional thermal shock resistance, superior crack resistance, and H-class thermal stability (IEC 60085). Ideal for vacuum casting or APG processes, it ensures reliability in critical indoor electrical components.

Key Features & Advantages
Feature Advantage
Modified BPA Epoxy + Anhydride Hardener Enhanced thermal stability & mechanical strength
Optimized for Vacuum Casting/APG Flexible processing, adaptable to client production methods
Superior Crack Resistance Withstands thermal cycling, reducing failure risks
HB Flammability Rating (UL94) Meets strict safety standards for electrical applications
High Dielectric Strength ≥25 kV/mm (1mm thickness, IEC 60243-1)
Low Water Absorption 0.10-0.20% (23°C/10 days) for long-term insulation integrity
H-Class Thermal Endurance Sustained performance up to 150°C
Applications

Perfect for insulating components in indoor high-voltage systems:

  • Switchgear contact boxes (12-40.5 kV)
  • Bushings, insulators, & encapsulation
  • Transformers, sensors, & circuit breakers
  • HV insulation products requiring precision casting
Key Performance Data

Cured system: LE-9219K/LH-9219K/Silica powder = 100:100:350 @ 140°C/10h

Property Value Standard
Glass Transition Temp (Tg) 105-120°C ISO 11357-2
Tensile Strength 65-85 MPa ISO 527
Flexural Strength 105-140 MPa ISO 178
Volume Resistivity 10¹⁵ Ω*cm IEC 62631-3-1
Arc Resistance 181-198 sec IEC 61621
Breakdown Strength ≥25 kV/mm IEC 60243-1
Dielectric Constant 3.0-4.0 (50Hz) IEC 60250
Water Absorption 0.10-0.20% (23°C/10d) ISO 62
Tracking Resistance ≥600 V IEC 60112
Curing Shrinkage 0.8-1.0% HG/T2625
Frequently Asked Questions (FAQ)
Q1: What is the mix ratio for LE-9219K/LH-9219K?
A: Standard ratio is 100:100 pbw (resin:hardener). Filler (silica powder) added at 300-380 pbw.
Q2: How should the hardener be stored?
A: Store in sealed containers at 6-35°C. Avoid moisture exposure. If crystallized, preheat to 70-80°C and stir before use.
Q3: What curing process is recommended?
A: Two options:
Vacuum Casting: Cure 70-80°C/3-5h + 90-100°C/2-4h; Post-cure 130°C/12h.
APG: Mold temp 130-160°C; Post-cure 130-150°C/10-12h.
Q4: Is this system suitable for outdoor use?
A: Designed for indoor electrical insulation only. Hydrophobicity class HC1 (IEC TS 62073).
Q5: What safety measures are required during handling?
A: Mandatory: gloves, goggles, protective clothing. Use ventilation (3-5 air renewals/hour). Avoid skin contact--wash immediately if exposed.

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