This product is a laminated product which made with the chemical treatment electrical purposed alkali-free glass cloth as the backing material,by hot pressing with modified diphenyl ether resin as binder.It has high mechanical strength under high temeprature,good dielectric stability under high humidity.Good radiation resistanceit ,suitable for class H motor,electrical equipment as the insulation structure parts.1.High mechanical strength under high temperature; 2.Good electrical stability under high moisture; 3.High heat resistance; 4.High moisture resistance; 5.Good machinability; 6.Good radiation resistance 7.Temperature resistance:Grade H

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	≥340
			180±5℃		≥170
4	Compression strength		Vertical	MPa	≥350
5	Impact strength (charpy type)		gap	KJ/m²	≥33
6	Bonding strength			N	≥5700
7	Tensile strength		Lengthway	MPa	≥300
8	Vertical electric strength （in oil of 90℃±2℃）		1mm	KV/mm	≥20.0
			2mm		≥18.0
			3mm		≥16.0
9	Parallel breakdown voltage(1 min in oil of 90℃±2℃）			KV	≥30
10	Dielectric dissiption factor（50Hz)			-	≤0.04
11	Parallel Insulation Resistance		Normal	Ω	≥1.0×1013
			After soaking  for 24hours		≥1.0×1010
12	Volumn Insulation Resistance		Normal	Ω.m	≥1.0×1011
			After soaking  for 24hours		≥1.0×109
			180±5℃		≥1.0×108

In accordance with GB/T 1303.4-2009 electrical thermosetting resin industrial hard laminates - Part 4: epoxy resin hard laminates. Appareance: 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.Suitable for class H motor,electrical equipment as the insulation structure parts.