PC sheets are divided into several types according to quality
PC sheets are divided into several types according to quality.
The shrinkage of PC sheet is quite high, generally 1.8% to 2.5%. And the directional uniformity of shrinkage is much better than that of PE-HD and other materials. The shrinkage can be reduced to 0.7% by adding 30% glass additive. Both homopolymer and copolymer PC materials have excellent hygroscopicity, acid and alkali corrosion resistance and solubility resistance.However, it has no resistance to aromatic hydrocarbons (such as benzene) solvents, chlorinated hydrocarbons (carbon tetrachloride) solvents, etc. PC is not as antioxidant at high temperature as PE.
1. PC sheet has the characteristics of high stiffness, high hardness and high strength, but the notch impact toughness is general. PC sheet material can withstand tensile stress and is easy to weld. Brittleness at low temperature, excellent chemical stability and electrical properties. The operating temperature ranges from 0 to 100 degrees.Characteristics: low density; heat resistance, no deformation; high stiffness; high surface strength; good chemical stability; non-toxic and harmless.
PC sheets are divided into several types according to quality. Jpg.
2. According to the quality, PC sheet board can be divided into the following categories: PC pure particle board (0.91 specific gravity) is suitable for cold bending at low temperature, PP pure board (particle material, powder, filler blending, 0.93 specific gravity); PC pure powder board (0.93 specific gravity and 0.95 specific gravity); PC reinforced board (adding glass fiber, specific gravity 1.0); PC modified board (high filling ratio, specific gravity 1.2 or 1.25).
3. The strength of PC sheet increases with the increase of ethylene content.The Vicat softening temperature of PC sheet is 150 ℃. Due to the high crystallinity, the surface stiffness and scratch resistance of this material are very good. There is no environmental stress cracking problem in PC. Usually, PP sheet is modified by adding glass fiber, metal additive or thermoplastic rubber.The flow rate of PC sheet is in the range of 1: 40