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Epoxy-Resin Prepreg DMD

DMD epoxy prepreg material is made of polyester film, polyester fiber non-woven fabric with F grade heat-resistant adhesive compound, and impregnated with heat-resistant epoxy resin by baking. The product has a smooth surface, stable performance, high bonding strength to copper foil and aluminum foil, and after being wrapped with copper and aluminum foil, there is almost no low molecular volatilization during vacuum drying, and it has the structural characteristics of low shrinkage. It is an ideal dry-type power transformer, reactor and other motor slot, turn, interlayer insulation material. Curing conditions: curing at 130 ℃ ± 5 ℃ for 5 hours, or curing at 140 ℃ ± 5 ℃ for 4 hours, or

Key words:

Oil-Immersed Transformer Insulating Materials | Mutual Inductor Insulation Materials

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86-13901476700

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Product Description

The DMD epoxy prepreg material is composed of polyester film and polyester-fiber non-woven fabric that are combined using the F-grade heat-resistant adhesive, and then impregnated with heat-resistant epoxy resin and baked. This product boasts a smooth surface, stable performance, and superior bonding strength with copper and aluminum foils. When wrapped around copper or aluminum foils and subjected to vacuum drying, it demonstrates virtually no low-molecular-weight volatiles and possesses structural characteristics of minimal shrinkage. It serves as an ideal insulating material for the slots, turns, and layers of dry-type power transformers, reactors, and other electrical machinery.
Product Curing Conditions:
The curing procedure can be done at several temperatures: 130℃ ± 5℃ for 5 hours, 140℃ ± 5℃ for 4 hours, or 150℃ ± 5℃ for 3 hours.
Storage：
It shall be stored in a dry and clean room with a temperature not exceeding 25℃ and must be kept away from fire sources, heaters, and direct sunlight. The shelf life is 6 months, and it can still be used if it passes the inspection after exceeding the storage period

Serial Number	Project	Unit	Requirements
1	Standard thickness	mm	0.16	0.18	0.2	0.25	0.3	0.4
2	Allowable thickness tolerance	mm	±0.02		±0.03			±0.04
3	Tensile strength	N/10mm	≥40	≥70	≥80		≥100
4	breakdown voltage	KV	≥ 7		≥ 8		≥10
5	Volatile content	%	≤ 1.5
6	soluble resin content	g/m2	30-50
7	bond strength	Mpa	≥ 5
8	temperature index	℃	≥ 155

Zhongling insulation material