China Cardboard manufacturers We not only produce insulating boards, but also can cut them into various sizes and process them into insulating parts of various shapes for customers. Our company has different types of CNC machines and grinding machines, which can make various high-precision insulating parts. 聽 Product description Introduction of Electrical Insulation 3021 bakelite phenolic impregnated resin paper sheet Electrical Insulation 3021 bakelite phenolic impregnated resin paper sheet is made of insulating impregnated paper impregnated with phenolic resin by hot-pressing. It has high mechanical and electrical properties, which can be used as insulating structural parts in motors and electrical equipment. It can also be used in transformer oil. Characteristics of Electrical Insulation 3021 bakelite phenolic impregnated resin paper sheet 1) High electrical and mechanical performance. 2) Easy for fabrication, good dimentional stability, physical strength, resiliency. 3) Better machinability than other products. 3021 PHENOLIC PAPER LAMINATED SHEET Serial numberPropertiesUnitGrade 3021-C 1Flexural strength perpendicular to laminations above 2mm鈮?/p MPa147 2Bonding strength鈮?/p N3206 3Dielectric Strength Perpendicular to Laminations (in 90掳C transformer oil)鈮?/p MV/m1.6 4Breakdown voltage parallel to laminations(in 90掳C transformer oil)鈮?/p kV4.4 5Permittivity (1MHz)_鈥?/p 3.71 6Dissipation factor (1MHz)_鈥?/p 0.0267 7Insulation Resistance after impregnated in water鈮?/p 惟1.2脳108 8Density聽g/cm3(1.45-1.5) 9Water absorption (10mm in thickness)鈮?/p mg653.7 10Color聽鈥?/p Coffee 聽 Supply Ability 300000 Kilogram/Kilograms per Month 聽 Packaging delivery Pallet or according to customer requirement 聽 Port Ningbo/Shanghai 聽China Cardboard manufacturers website:http://www.cnholdsen.com/cardboard/