Specifications

1. We are engaged in insulating material has been 20 years
2.There are about 300 transformer manufacturers use our products

          2014 best selling Guoshun insulation epoxy resin                             prepreg DMD(Class F)

Epoxy resin prepreg DMD    is made of non-woven polyester mat bonded to both sides of an electrical grade polyester film using heat-resistant resin, and then bake to half-solidified laminate, Epoxy resin prepreg DMD  is steady thermal-bond adhesive material, andthe  Epoxy resin prepreg DMD thermal class is F(155℃)
Characteristics
Good properties of mechanism and electric , and Epoxy resin prepreg DMD  applicable for the high quality, insulation system
Good flexibility, high strength of bonding with resin and substrate material
Long storage time, simple molding process
Big content of dissolve resin, high strength divesting
Little content of volatile and part discharge

Application
Epoxy resin prepreg DMD   are used as slot insulation, phase insulation, and Epoxy resin prepreg DMD liner insulation and layer-pressure insulation of class F dry type transformer.
Storage
Epoxy resin prepreg DMD   should be put into carton after sealed with plastic pocket, of which the weight is no less than 60kg. Epoxy resin prepreg DMD storage under the dry, well-ventilated, room temperature. Epoxy resin prepreg DMD should be care of fire-proof, moisture-proof, compression-proof and sun-proof and sun-proof. Epoxy resin prepreg DMD  can  storage  more than 6 months.
Curing Conditions

Temperature ( ℃)	130	140	150
Times(hrs)	5	4	3

Technical Criteria

NO.	Items		Unit	Index
1	Nominal Thickness		mm	0.15		0.18	0.20		0.23		0.25			0.30		0.35		0.40		0.45
2	Thickness Tolerance		mm	±0.020		±0.025	±0.030		±0.030		±0.030			±0.030		±0.035		±0.040		±0.045
3	Nominal Gram and Tolerance		g/square meter	170	210			230		240		260			300		360		440		490
				±25	±30			±35		±30		±40			±45		±50		±55		±60
4	Film Nominal Thickness		mm	0.05		0.05	0.05		0.10		0.10			0.15		0.188		0.25		0.25
5	DMD Nominal Thickness		mm	0.10		0.14	0.15		0.18		0.20			0.25		0.30		0.35		0.40
6	Tensile Strength (MD)		n/cm	≥70			≥80							≥100
7	Resin Content		%	35±5			30±5							25±5				20±5
8	Volatile Content		%	≤1.5
9	Dissolvable Resin Content		%	≥85
10	Dielectric Strength		MV/m	≥40
11	Breakdown Voltage(min)		kV	7		7	7		10		10			13		15		18		18
12	Tensile And Sheared Strength		mpa	≥3.0
13	Heat Shrinkable	TD	%	≤1.0									Special requirements will be negotiated by both sides
		MD		≤2.0
14 15	Appearance			Flexible, smooth, no delaminating, machinery damage, impurity, crack, blister and adhesive phenomenon
16	Supplied Size			Supplied with reel, inner diameter is 76mm, the width is from 15mm to 1100mm, can be cut to tape
17	Color			Red , burnt almond, white
18	Index of Long Time High Temperature Resistance(TI)		℃	≥155