Material: environmental protection resin, glass fiber
Uses: FRP core is suitable for winding various optical films, copper cylinders and aluminum cylinders.
Product advantages: FRP core tube has high strength, is not easy to deform, has stable physical properties, and can prevent film damage due to core deformation. FRP has high linear dimension accuracy and good surface finish, which can effectively increase the film utilization rate. Reusable, the outer surface of FRP can be repaired many times and recycled.
Product performance parameters:
1. Winding angle of glass fiber (45°-65°)
2. Fiber content by weight, more than 70%
3. Density≧1.92g/cm3
4. Water absorption≦0.2%
5. Vertical layer bending strength≧400MPA
6. Shear strength≧32MPA
7. Axial pressure shrinkage≧150MPA
8. Parallel layer breakdown voltage (90±2)℃≧50KV in oil
9. Dielectric loss factor≦0.05 under power frequency
10. Dielectric constant≦3
11. Insulation resistance≧5×10000
12. Surface pressure resistance (withstand pressure in air for 1 minute, interval 35MM) ≧ 14KV
13. Temperature resistance grade: (Long-term use temperature resistance is less than 140°C) Class F (155°C)
