3240 epoxy resin board is made of electrical glass cloth impregnated with epoxy resin, dried and hot pressed. 3240 epoxy resin board refers to an organic polymer compound containing two or more epoxy groups in the molecule.
3240 epoxy resin board is made of electrical glass cloth impregnated with epoxy resin, dried and hot pressed. 3240 epoxy resin board refers to an organic polymer compound containing two or more epoxy groups in the molecule. Except for individual, their relative molecular mass is not high. The molecular structure of epoxy resins is characterized by the presence of active epoxy groups in the molecular chain. The epoxy groups can be located at the end, middle or in a ring structure of the molecular chain.
The definitions of 3240 epoxy resin board
The surface of the 3240 epoxy resin board is required to be smooth, free of bubbles, pits and wrinkles, but other defects that do not affect the use are allowed, such as scratches, indentations, stains and a small amount of spots. The edges should be cut neatly, and there should be no delamination or cracks on the end faces.
Executive standard: GB / T1303.1-1998 (natural color), red, green and black are protocol standards.
Temperature resistance level: B level
Color: natural color (yellow), red, green, black, etc. (additional colors can be added, can be adjusted to a variety of colors)
The characteristics of 3240 epoxy resin board : The cured epoxy resin system has excellent mechanical properties, high mechanical strength at medium temperature, and good electrical stability under high humidity.
The electrical property of 3240 epoxy resin board : The cured epoxy resin system is an excellent insulating material with high dielectric properties, resistance to surface leakage, and arc resistance
Usage: Applicable to machinery, electrical, electronic, electrical appliances and other fields. It is also used in the processing of insulation parts, and into various types of insulation parts and equipment insulation structural parts.
Thickness: Normally 0.5 ~ 50mm, thick plates of 50 ~ 150mm can also be produced as required.
The reaction of epoxy resin and curing agent is carried out by direct addition reaction or ring-opening polymerization reaction of epoxy group in the resin molecule, and no water or other volatile byproducts are released. Compared with unsaturated polyester resins and phenolic resins, they show very low shrinkage (less than 2%) during curing.
3240 epoxy resin board name meaning:
3240 is the national standard number, corresponding to EPGC201 type in IEC893-3-2.
According to JB-T 2197-1996 electrical insulation material product classification, naming and model compilation method:
3240 epoxy resin board four-digit Arabic numerals
The first 3 represents laminated products, wound products, vacuum pressure dipped products
The second digit 2 represents inorganic substrate laminate
The third digit 4 represents the temperature index level 155 degrees
The fourth digit 0 represents the product code
3240 full name is epoxy laminated glass cloth