Cheapest Price Fiberglass Insulation Board - FR4 Rigid Epoxy Glassfiber Laminated Sheet – Xinxing
Cheapest Price Fiberglass Insulation Board - FR4 Rigid Epoxy Glassfiber Laminated Sheet – Xinxing Detail:
Product Description
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. Therefore, general PCB circuit boards, There are many types of FR-4 grade materials used, but most of them are composite materials made of Tera-Function epoxy resin with filler and glass fiber.
Compliance With Standards
In accordance with GB/T 1303.4-2009 electrical thermosetting resin industrial hard laminates – Part 4: epoxy resin hard laminates, IEC 60893-3-2-2011 insulating materials – electrical thermosetting resin industrial hard laminates – Part 3-2 of the individual material specification EPGC202.
Features
1.High mechanical properties;
2.High dielectric properties;
3.Good Mechinability
4.Good moisture resistance;
5.Good heat resistance;
6.Temperature resistance:Grade B,130℃
7.Flame retardant property:UL94 V-0

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.
Main Performance Index
| NO. | ITEM | UNIT | INDEX VALUE | |
| 01 | Density | g/cm³ | 1.8-2.0 | |
| 02 | Water absorption | % | <0.5 | |
| 03 | Vertical bending strength | MPa | ≥350 | |
| 04 | Parallel impact strength(Charpy type) | KJ/m² | ≥33 | |
| 05 | Parallel shear strength | MPa | ≥30 | |
| 06 | Tensile strength | MPa | ≥240 | |
| 07 | Vertical electric strength(in oil of 90℃±2℃) | 1mm | MV/m | ≥14.2 |
| 2mm | ||||
| ≥11.8 | ||||
| 3mm | ||||
| ≥10.2 | ||||
| 08 | Parallel breakdown voltage(in oil of 90℃±2℃) | KV | ≥35 | |
| 09 | Relative dielectric constant(50Hz) | - | ≤5.5 | |
| 10 | Dielectric dissipation factor(50Hz) | - | ≤0.04 | |
| 11 | Insulation resistance after soaking(After soaking for 24 hours) | MΩ | ≥5.0×104 | |
| 12 | Fire resistance(UL94) | - | V-0 | |
Product detail pictures:

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Our company since its inception, always regards product quality as enterprise life, continuously improve production technology, improve product quality and continuously strengthen enterprise total quality management, in strict accordance with the national standard ISO 9001:2000 for Cheapest Price Fiberglass Insulation Board - FR4 Rigid Epoxy Glassfiber Laminated Sheet – Xinxing, The product will supply to all over the world, such as: Bolivia, Eindhoven, Cape Town, Based on products and solutions with high quality, competitive price, and our full range service, we have accumulated experienced strength and experience, and we've built up a very good reputation in the field. Along with the continuous development, we commit ourselves not only to the Chinese domestic business but also the international market. May you moved by our high quality items and passionate service. Let's open a new chapter of mutual benefit and double win.
This manufacturers not only respected our choice and requirements, but also gave us a lot of good suggestions, ultimately, we successfully completed the procurement tasks.





