What Is The Relationship Among PVC Floor, Plastic Floor And Stone Plastic Floor?
PVC floor, plastic floor and stone plastic floor all belong to the same essence of elastic floor: PVC floor and plastic floor are different names for the same product. Stone plastic floor belongs to a sub product of PVC floor. PVC floor is divided into coil and sheet. Stone plastic floor refers to sheet.
The main materials of PVC floor are PVC and stone powder. The proportion of PVC is much higher than stone powder. PVC is PVC material. PVC floor is also called plastic floor. Due to the current different names, some people call it glue floor, floor glue, composite floor and floor leather. The correct name should be PVC floor.
The structure of PVC monomer is ch2chcl
The density is 1380 kg / M? Because the density of stone powder is higher than that of PVC, the proportion of PVC and stone powder content in the floor can be judged according to the density of PVC floor.
The glass transition temperature is 87 ℃, which affects the thermal expansion and cold shrinkage of PVC floor.
The melting point is 212 ℃, which largely determines the temperature at which PVC floor will burn.
The thermal conductivity (λ) is 0.16 w / M.K.
The coefficient of thermal expansion (α) 8 10-5 / K directly determines the thermal expansion and contraction of PVC floor.
The water absorption (ASTM) is 0.04-0.4, which determines that PVC floor has good waterproof and moisture-proof performance.
PVC floor composition
PVC and its copolymer resin are used as the main raw materials, fillers, plasticizers, stabilizers, colorants and other auxiliary materials, which are produced by coating process or calendering, extrusion or extrusion process on the sheet continuous substrate.
Classification of PVC floor structure
In terms of structure, it can be divided into three types: homogeneous, semi homogeneous and multilayer.
One is homogeneous, that is, the material from the bottom to the surface is the same; one is semi homogeneous, that is, a layer of wear-resistant layer is added on the surface of homogeneous, and the other is multi-layer composite, which is made of multi-layer structure. Generally, the upper layer is pure PVC transparent layer, and the lower layer is printed layer and back layer.