This product is a laminated sheet which made with processed non-alkali glass fiber cloth as the backing material, by hot pressing with grade F benzo oxazine resin. It has good mechanical and electrical properties,and flame retardant, especially has high mechanical strength retention and excellent electrical properties under high temperature.Suitable for grade F motor and electrical equipment as high quality insulation structure , has the advantage of good machinability and wide applicability in the similar products.1.Good mechanical and electrical properties; 2.High mechanical strength retention and excellent electrical properties under high temperature; 3.Moisture resistance; 4.Heat resistance; 5.Temperature resistance:Grade F; 6.Good Machinability and wide applicability 7.Flame retardant property:UL94 V-0

NO.	ITEM			UNIT	INDEX VALUE
					347	347F
1	Density			g/cm³	1.8-2.0	1.8-2.0
2	Water absorption Rate			%	≤0.5	≤0.5
3	Vertical bending strength		Normal	MPa	≥440	≥400
			155±2℃		≥280	≥250
4	Compression strength		Vertical	MPa	≥350	≥300
			Parallel		≥260	≥200
5	Impact strength (charpy type)		Lengthway no gap	KJ/m²	≥147	≥129
			Horizontal no gap		≥98	≥77
6	Bonding strength			N	≥7200	≥6800
7	Tensile strength		Lengthway	MPa	≥280	≥240
			Horizontal		≥200	≥180
8	Vertical electric strength （in oil of 90℃±2℃）		1mm	KV/mm	≥14.2	≥14.2
			2mm		≥12.4	≥12.4
			3mm		≥11.5	≥11.5
9	Parallel breakdown voltage(1 min in oil of 90℃±2℃）			KV	≥45	≥45
10	Dielectric dissiption factor（50Hz)			-	≤0.04	≤0.04
11	Volumn Insulation Resistance		Normal	Ω	≥1.0×1012	≥1.0×1012
			After soaking  for 24hours		≥1.0×1010	≥1.0×1010
12	Combustibility（UL-94)			Level	V-1	V-0

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.The technical data of 347F is similar to FR5,Suitable for grade F motor and electrical equipment as high quality insulation structure.