FR4 Epoxy Fiberglass Laminated Sheet
Product Instruction
This product was laminated by the high temperature and high pressure with electronic glassfiber cloth impregnated with brominated epoxy resin.It with high mechanical properties,dielectric properties and flame retardant properties,it also with good heat resistance and moisture resistance;
FR-4 is a code of a grade of flame-resistant materials, which means a material specification that a resin material must be able to extinguish by itself after burning. It is not a material name, but a material grade. The name FR4 comes from the NEMA grading system where the ‘FR’ stands for ‘fire retardant’, compliant with the UL94V-0 standard.
Compliance with standards
In accordance with GB/T 1303.4-2009 electrical thermoset resin industrial hard laminates - Part 4: epoxy resin hard laminates, IEC 60893-3-2-2011 insulating materials - electrical thermoset resin industrial hard laminates - Part 3-2 of the individual material specification EPGC202.
Application
This product is mainly used as the structure parts for Motor and electrical equipment,including all kinds of switch、electric equipment、FPC reinforcement plate、carbon film printed circuit boards、computer drilling pad、mould and smelting equipment(PCB test flame）;and also suitable under wet environment and transformer oil.
Product pictures
Main Technical Date(Click here to download the third party test report）
|
Property |
Unit |
Standard value |
Typical Value |
Test method |
|
Flexural strength perpendicular to laminations(MD) |
MPa |
≥340 |
480 |
IEC60893-2：2003 |
|
Charpy impact strength parallel to laminations(Notched,MD) |
kJ/m2 |
≥33 |
49 |
|
|
Tensile strength(MD) |
MPa |
≥300 |
322 |
|
|
Electric strength perpendicular to laminations(at 90℃±2℃ in 25# transformer oil,20s step-by-step test,Φ25mm/Φ75mm cylindrical electrode) |
kV/mm |
≥14.2 |
18.2 |
|
|
Breakdown voltage parallel to laminations(at 90℃±2℃ in 25# transformer oil,20s step-by-step test,Φ130mm/Φ130mm plate electrode) |
kV |
≥35 |
>50 |
|
|
Relative Permittivity(1MHz) |
_ |
≤5.5 |
5.20 |
|
|
Insulation resistance(Taper pin electrodes,and the electrode spacing is 25.0mm) |
Ω |
≥5.0 x1012 |
5.9x1013 |
|
|
Insulation resistance(After 24h immersion in water,using taper pin electrodes,and the electrode spacing is 25.0mm) |
Ω |
≥5.0 x1010 |
1.3x1012 |
|
|
Comparative tracking index(CTI) |
_ |
_ |
CTI600 |
|
|
Density |
g/cm3 |
1.9-2.1 |
2.0 |
ISO1183-1：2019 |
|
Flammability(Vertical method) |
Class |
V-0 |
V-0 |
ANSI/UL-94-1985 |
|
Temperature index |
℃ |
_ |
130℃ |
FAQ
Q1: Are you trading company or manufacturer?
We are the leading manufacturer of electrical insulating composite,We have been engaged in manufacturer thermoset rigid composite since 2003.Our capacity is 6000TONS/year.
Q2: Samples
Samples are free,you only need to pay for the shipping charge.
Q3: How do you guarantee the quality of mass production?
For appearance,size and thickness: we will make full inspection before packing.
For performance quality: We use a fixed formula, and will be regular sampling inspection, we can provide product inspection report before shipment.
Q4: Delivery time
It depends on order quantity.Generally speaking, the delivery time will be 15-20 days.
Q5: Package
We will use professional craft paper to package on plywood pallet.if you have special package requirements, we will pack as your need.
Q6: Payment
TT, 30% T/T in advance ,balance before shipment.We also accept L/C.