Quality Inspection for Fr4 Fiberglass Sheet - Grade F Halogen-free fire retardant Epoxy glass fiber laminated sheet – Xinxing

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Quality Inspection for Fr4 Fiberglass Sheet - Grade F Halogen-free fire retardant Epoxy glass fiber laminated sheet – Xinxing Detail:

Product Description

This product is made with the electrician non-alkali glass fiber cloth as the backing material, with high TG phosphorous and nitrogen flame retardant epoxy resin as binder via hot pressing laminated products, high mechanical strength and low combustion performance under normal temperature, high temperature under 155 ℃ still has strong mechanical strength, good electrical properties under dry and wet state, can be used in damp environment and transformer oil,It is a class F heat-resistant insulating material.Applicable to all kinds of motor, electrical, electronic and other fields, widely used in motor, electrical equipment as insulation structure parts, high voltage switch-gear, high voltage switch (such as motor stator insulation materials at both ends, rotor end plate rotor insulation piece, slot wedge, terminal board, etc.).

Features

1.Good electrical stability under high humidity;
2.High mechanical strength under high temperature;
3.Moisture resistance;
4.Heat resistance;
5.Temperature resistance:Grade F
6.Halogen-free and fire retardant

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Compliance with standards

In accordance with GB/T 1303.4-2009 electrical thermosetting resin industrial hard laminates – Part 4: epoxy resin hard laminates.

Appearance: the surface should be flat, free of bubbles, pits and wrinkles, but other defects that do not affect the use are allowed, such as: scratches, indentation, stains and a few spots.The edge shall be cut neatly, and the end face shall not be delaminated and cracked.

Compliance with standards

Suitable for all kinds of motor, electric appliances,electronic and other fields.

Main Performance Index

NO.	ITEM		UNIT	INDEX VALUE
1	Density		g/cm³	1.8-2.0
2	Water absorption Rate		%	≤0.5
3	Vertical bending strength	Normal	MPa	≥380
		155±2℃		≥190
4	Compression strength	Vertical	MPa	≥300
		Parallel		≥200
5	Impact strength (charpy type)	Lengthway no gap	KJ/m²	≥147
6	Bonding strength		N	≥6800
7	Tensile strength	Lengthway	MPa	≥300
		Horizontal		≥240
8	Vertical electric strength （in oil of 90℃±2℃）	1mm	KV/mm	≥14.2
		2mm		≥11.8
		3mm		≥10.2
9	Parallel breakdown voltage(1 min in oil of 90℃±2℃）		KV	≥40
10	Dielectric dissiption factor（50Hz)		-	≤0.04
11	Insulation Resistance	Normal	Ω	≥1.0×1012
		After soaking for 24hours		≥1.0×1010
12	Combustibility（UL-94)		Level	V-0

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