On PVC sheet is what I believe we have a preliminary understanding, then five forming principle of PVC sheet, what does, you know, to meet everyone on the aspects of the demand for knowledge, hereby for you to bring this knowledge introduction for your reference!
1, general principles: PVC sheet, the relative density of 1.35-1.45, the product of the soft and hard degree can be adjusted by adding a number of the number of plasticizer, the pure PVC sheet of water absorption and permeability are very few;
2, the principle of electrical: soft PVC sheet is a kind of electric principle better polymer, but because of very large, electrical insulation as PP plate and PE plastic plate, dielectric constant, dielectric loss angle tangent value and volume resistivity greater resistance to corona is not good, generally suitable for low voltage and low frequency insulating materials;
3, the principle of Mechanics: PVC sheet has higher hardness and mechanical principles, and decreases with the increase of the molecular weight and improve, but with the increase of temperature and decrease, the mechanical principle of rigid PVC sheet and the elastic modulus of up to 1500-3000MPa, and the elasticity of soft PVC sheet 1.5-15 MPa;
4. The thermal stability of the PVC sheet is very poor, and the stability of the sheet is 140. The linear expansion coefficient of PVC sheet is small, which has the characteristic of flame burning, and the oxidation index is as high as 45;
5, environmental principles: PVC sheet is resistant to most inorganic acid, alkali, salt, most organic solvents. Suitable for medicine, chemical anti-corrosion materials.