Polished Brown Linen Phenolic Ball

Beijing Red Sun Composite Material Co., Ltd. is one professional producer for SMC and BMC molding products, insulating rigid laminates, rods and tubes, flexible composites, high thermal resistant products, gasket, fiber glass products, engineering plastics, etc. We also provide the further fabrication for these products and kinds of composite materials. You can get most of what you want from us.

Advanced production line, excellent technology and experienced work team assure we can provide you the products comply with the international standards and different requirements. We assure that you will get the high efficiency feedback and best service from us for those products that we deal with and certainly with the competitive price.

More information plesae see the table below.

1. Define and purpose
The laminated bar is a kind of round section bar through heat pressing in forming die after the cotton or glass cloth as basic dips into PF resins.
2. Model and characteristic
Model	Characteristic
3721	Mechanical used (rough cloth)
3722	Mechanical used(rough cloth)
3723	Mechanical and electrical used(rough cloth)
3724	Mechanical used (thin cloth), it can be processed in precision.
3725	Mechanical and electrical used(thin cloth), it can be processed in precision.
3841	High mechanical dielectric strength under dry and damp conditions.
3. Technical requirement
2.1 Outside appearance:
The surface should be smooth, no bubble, oil dirty and impurity, the uneven color not to retard its use and the slight rugged are allowed. For the laminated glass cloth bar with diameter over 25mm, the crackle not retard its use at end surface or breaking face is allowed.
2.2 Main performance index
Table 2: Main performance index
Model	Density g/cm3	Bending strength(Mpa)(Min)	Compact strength(Mpa)(Min. )	Parallel layer direction breakdown voltage(KV)(Min. )
3721	≥ 1.30	≥ 100	≥ 120	10
3722	≥ 1.28	≥ 110	≥ 131	-
3723	≥ 1.26	≥ 90	≥ 138	10
3724	≥ 1.28	≥ 110	≥ 131	-
3725	≥ 1.26	≥ 83	≥ 138	10
3841	≥ 1.70	≥ 241	≥ 241	15
FR4	≥ 1.70	≥ 241	≥ 241	15