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Flexible Before Curing 6440 Class-F Red DMD Epoxy Prepreg, Class F DMD Prepreg as Flexible DMD Prepreg for Dry Transformer Interlayer Insulation
US$3.00
10-99 kg
US$2.70
100+ kg
Sample price:US$40.00/piece.Request sample
Product profile
Customization
AvailableApplication
Generator, Motor, TransformerColor
RedModel NO.
6440Material
Modified Epoxy Resin, B-Stage (Semi-Cured)Thermal Rating
F 155Thickness
0.15 mm,0.18 mm,0.20 mm,0.25 mm,0.30 mmBreakdown Voltage
≥7kv~≥10kv(Depending on Thickness)Shelf-Life
6 MonthsResin Content
35±5 %Volatile Content
≤1.5 %Resin Flow
5-15 %Dielectric Strength
≥40 Mv/MTensile-Shear Strength(After Cured)
≥3.0 MPaTransport Package
Cartons and Wooden PalletsSpecification
10-1200mm, custom slitting availableTrademark
ZhonghaoOrigin
Xuchang, Henan, ChinaHS Code
8546909090Key features
F-class long-term heat resistance at 155 degrees centigrade, short-term peak up to 180 degrees centigrade.
B-stage semi-cured epoxy prepreg, bonding pressure range 2-5 megapascal at 130-160 degrees centigrade.
Variable width from 10 millimeter to 1200 millimeter, custom slitting service supported.
Thickness tolerance within plus or minus 8 percent, multiple standard thickness from 0.15 mm,0.18 mm,0.20 mm,0.25 mm,0.30 mm .
High dielectric strength reaching 18 kilovolt per millimeter, stable insulation after hot pressing curing.
Controlled resin flow range from 15 percent to 30 percent, low volatile content below 2.5 percent.
Uniform epoxy impregnation with resin content 30 percent to 40 percent, red homogeneous appearance.
Low shrinkage rate less than 1.5 percent after curing, maintain dimension stability for long-time equipment operation.
Tensile strength above 120 newton per centimeter both in machine and cross direction.
Company profile
CertifiedBusiness Type: Manufacturer/Factory & Trading Company CertifiedR&D Capacity: ODM Service Available & OEM Service Available CertifiedCustomization Options: Customization from Samples, Customization from Designs, etc.Nearest Port: QING DAO, TIAN JIN, BING BOAverage Response Time: ≤0.03hTerms of Payment: T/T, LC, Western Union, etc.
About Our Factory & Business Background
AddressNo. 2988, South Ring Road, Economic & Technological Development Zone, Xuchang, Henan, China
Registered Capital3,000,000 RMB
International Commercial Terms(Incoterms)FOB, EXW, CIF, CFR
Average Lead TimePeak Season Lead Time: within 15 workdays Off Season Lead Time: within 15 workdays
Minimum Order Quantity100 kg
Supply Chain Partners6
Our Production Capability & Technical Expertise
Main ProductsInsulating, Insulating Paper, Insulating Tube, Fiberglass Tape, Electrical Insulating Board, Glass Fiber Unidirectional Tape, Electrical Crepe Paper Tube, Dotted Diamond DDP Paper, Electrical Pressboard, Transformer Accessories
Production Machinesbar cutting machine, cutting machine
Inspection Type for Finished ProductsRandom inspection(Visual inspection & Function inspection)
Inspection Method for Finished ProductsHave instructions and uniformly followed
Traceability of Raw MaterialsYes
Our Industry Experience & Global Business Record
Year of Establishment2011-09-22
Main MarketsSoutheast Asia, Mid East, South America, Africa, Oceania, Eastern Asia
Overseas Agent/BranchNo
Our Certifications, Standards & Industry Recognition
Management System CertificationISO9001:2015, ISO45001:2018, ISO14001
Product Q&A
Q:What is 6440 DMD epoxy prepreg?
A:
It is F-class composite insulation material, compounded by polyester non-woven fabric, PET film impregnated with epoxy resin, red surface, mainly used for motor insulation.
Q:What is its temperature resistance class?
A:
Thermal endurance class F, continuous operating temperature 155 centigrade.
Q:Does this material need hot-press process?
A:
Yes. Under proper heating and pressing condition, epoxy resin cures to achieve bonding and integral insulation structure.
Q:What is the difference between ordinary DMD and 6440 epoxy DMD prepreg?
A:
6440 is epoxy pre-impregnated type, can realize self-bonding after hot pressing; common DMD without epoxy needs extra varnish for bonding.
Q:What main application scenarios for 6440 prepreg?
A:
Mainly for slot insulation, phase insulation of low-voltage motors, small transformers, electrical coil insulation.
Send Inquiry
*To:
Xuchang Zhonghao Insulation Materials Co., Ltd.
Xuchang Zhonghao Insulation Materials Co., Ltd.*Content:
Supplier replies will be sent to your registered email
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