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2022 Good Quality Dmd Insulation Paper - D279 Epoxy Pre-impregnated DMD for dry type trasnformers – D&F

2022 Good Quality Dmd Insulation Paper - D279 Epoxy Pre-impregnated DMD for dry type trasnformers – D&F

2022 Good Quality Dmd Insulation Paper - D279 Epoxy Pre-impregnated DMD for dry type trasnformers – D&F Featured Image
  • 2022 Good Quality Dmd Insulation Paper - D279 Epoxy Pre-impregnated DMD for dry type trasnformers – D&F
  • 2022 Good Quality Dmd Insulation Paper - D279 Epoxy Pre-impregnated DMD for dry type trasnformers – D&F
  • 2022 Good Quality Dmd Insulation Paper - D279 Epoxy Pre-impregnated DMD for dry type trasnformers – D&F
  • 2022 Good Quality Dmd Insulation Paper - D279 Epoxy Pre-impregnated DMD for dry type trasnformers – D&F
  • 2022 Good Quality Dmd Insulation Paper - D279 Epoxy Pre-impregnated DMD for dry type trasnformers – D&F

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2022 Good Quality Dmd Insulation Paper - D279 Epoxy Pre-impregnated DMD for dry type trasnformers – D&F Detail:

D279 is made from DMD and special epoxy heat resistant resin. It has the characteristics of long storage life,  low curing temperature and short curing time. After being cured, it has excellent electrical properties, good adhesive and heat resistance.The heat resistance is Class F. It is also called as Prepreg DMD, pre-impregnaed DMD, flexible composite insulation paper for dry transformers.

D279 DMD(1)
D&F D279 pre-impregnated DMD

Product Features

D279 epoxy pre-impregnated DMD has excellent electrical properties, good adhesive and heat resistance.

Applications

D279 epoxy pre-impregnated DMD is used for layer insulation or liner insulation of low-voltage copper/ aluminum foil winding in dry-type transformers as well as slot insulation and liner insulation in Class B and F electric motors and electric appliances. It is also called as Prepreg DMD, Prepreg insulation composite paper for dry type transformers.

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D279 epoxy prepreg DMD
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Supply Specifications

Nominal width：1000 mm.

Nominal weight: 50±5kg /Roll.

The splices shall not be more than 3 in a roll.

Color: white or red color.

Appearance

Its surface should be flat, free of uneven resin and impurities affecting performances. While being de-coiled, its surface shall not be conglutinated each other. Free of such defects such as creases, bubbles and wrinkles.

Packing And Storage

D279 should be wrapped with plastic film then put in clean & dry carton

The storage life is 6 months at temperature of below 25℃ after leaving factory. If the storage duration is over 6 months, the product can still be used when being tested to be qualified. The product should be put and/or stored upright and keep away from fire, heat and direct sunshine.

Technical Performances

The standard performance values for D279 epoxy pre-impregnated DMD are shown in table 1 and the typical values are shown in table 2.

Table 1:  Standard Performance value for D279 epoxy Prpreg DMD

No. Properties Unit Stand values
1 Nominal thickness mm 0.16 0.18 0.20 0.23 0.25
2 Thickness tolerance mm ±0.030 ±0.035
3 Grammage (for reference) g/m2 185 195 210 240 270
4 Tensile strength (MD) N/10mm ≥70 ≥80 ≥100
5 Dissolvable resin content g/m2 60±15
6 Volatile content % ≤1.5
7 Dielectric strength MV/m ≥40
8 Shear strength under tension MPa ≥3.0

Table 2:  Typical performance values for D279 epoxy Prepreg DMD

No. Properties Unit Typical values
1 Nominal thickness mm 0.16 0.18 0.20 0.23 0.25
Thickness tolerance mm 0.010 0.015
2 Grammage (for reference) g/m2 186 198 213 245 275
3 Tensile strength (MD) N/10mm 100 105 115 130 180
4 Dissolvable resin content g/m2 65
5 Volatile content % 1.0
6 Dielectric strength MV/m 55
7 Shear strength under tension MPa 8

Application and Remarks

Recommended curing conditions

Table 2

Temperature（℃） 130 140 150
Curing time（h） 5 4 3

Production Equipment

We have two lines, the production capacity is 200T/month.

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Product detail pictures:

2022 Good Quality Dmd Insulation Paper - D279 Epoxy Pre-impregnated DMD for dry type trasnformers – D&F detail pictures

2022 Good Quality Dmd Insulation Paper - D279 Epoxy Pre-impregnated DMD for dry type trasnformers – D&F detail pictures

2022 Good Quality Dmd Insulation Paper - D279 Epoxy Pre-impregnated DMD for dry type trasnformers – D&F detail pictures

2022 Good Quality Dmd Insulation Paper - D279 Epoxy Pre-impregnated DMD for dry type trasnformers – D&F detail pictures

2022 Good Quality Dmd Insulation Paper - D279 Epoxy Pre-impregnated DMD for dry type trasnformers – D&F detail pictures

Related Product Guide:
We take "customer-friendly, quality-oriented, integrative, innovative" as objectives. "Truth and honesty" is our management ideal for 2022 Good Quality Dmd Insulation Paper - D279 Epoxy Pre-impregnated DMD for dry type trasnformers – D&F , The product will supply to all over the world, such as: Mauritania, Sevilla, Yemen, Our company will continue to adhere to the " superior quality, reputable, the user first " principle wholeheartedly. We warmly welcome friends from all walks of life to visit and give guidance, work together and create a brilliant future!
    • The company can keep up with the changes in this industry market, product updates fast and the price is cheap, this is our second cooperation, it's good.
    5 Stars By Althea from Palestine - 2017.11.11 11:41
    The company can keep up with the changes in this industry market, product updates fast and the price is cheap, this is our second cooperation, it's good.
    5 Stars By ron gravatt from Brisbane - 2017.02.18 15:54

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