PC is a polymer with carbonate groups in its molecular chain, which can be divided into three types according to the structure of ester groups: aliphatic, aromatic and aliphatic-aromatic. It is a tough thermoplastic resin, which can be synthesized from bisphenol A and carbon oxychloride (COCl2).
PVC is a kind of white powder with amorphous structure, with low branching degree, poor stability to light and heat, low price and wide application. PVC resin is white or light yellow powder, which cannot be used alone and must be modified.
2. Different uses.
PC is used in glass assembly industry, industrial safety baffle and bullet-proof glass, various signs, containers, automobile industry and electronics, electrical appliances industry, industrial machinery parts, optical disks, computers and other office equipment, medical care, films, leisure and protective equipment, protective windows in banks, embassies, detention centers and public places, aircraft cabin covers and lighting equipment.
Pvc is used to make anticorrosive pipes, pipe fittings, oil pipelines, centrifugal pumps and blowers, linings of various storage tanks, corrugated boards of buildings, door and window structures, wall decoration and other building materials, plugs, sockets, switches and cables, sandals, raincoats, toys and artificial leather.
3. Nature is unnecessary.
PC is resistant to weak acid, weak alkali, neutral oil, ultraviolet ray and strong alkali, flame retardant and wear resistant. Oxidation resistance.
Rigid PVC has good tensile, bending, compression and impact resistance, and can be used as structural material alone.
The softness, elongation at break and cold resistance of soft PVC will increase, but the brittleness, hardness and tensile strength will decrease.
PVC has good electrical insulation performance, can be used as low-frequency insulation material, and has good chemical stability.
4. The density is different.
Is the density of PVC 1.4g/cm? The density of PVC plastic parts is related to plasticizers, fillers and fillers. Generally 1. 15-2.00g/cm? .
PC density:1.18-1.22g/cm3 linear expansion rate: 3.8× 10-5cm/℃
Reference source: Baidu Encyclopedia -PC
Baidu encyclopedia -PVC