Plastic sheets have the following characteristics compared with other materials
<1> Light weight and strong 2> Easy to process and mass production, cheaper <3> Wide range of applications, easy coloring, partial high temperature resistance <4> Chemical resistance <5> Surface gloss, partially transparent or opaque <6> Most Good insulator
Plastic plates are also divided into general-purpose plastics and engineering plastics, which are mainly defined by the wide range of applications. For example, PE plates and PP plates are inexpensive and can be produced on a variety of different types of machines (such as extruders and laminators). . Engineering plastics are more expensive, but the stability of materials and physical properties are much better. In general, they have both rigidity and toughness. It has good corrosion resistance, high strength, high hardness, easy processing and welding. It is widely used in acid and alkali pools, extraction vessels, chemical, water treatment, environmental protection equipment, etc.
The plastic plate has excellent chemical stability, strong corrosion resistance, high hardness, high strength, anti-ultraviolet (aging resistance), fire-retardant (self-extinguishing), reliable insulation, smooth surface, smooth, non-absorbent, no It is an excellent thermoformed material that can replace some stainless steel and other corrosion-resistant synthetic materials. It is widely used in chemical, petroleum, electroplating, water purification treatment equipment, environmental protection equipment, mining, extraction engineering, electronic circuits. Board, fire board formwork, brick-free board, building formwork and advertising decoration.
PVC board performance
General properties PVC resin is a white or light yellow powder with a relative density of 1.35 - 1.45. The degree of softness and hardness of the product can be adjusted by the amount of the plasticizer added. Pure PVC has very little water absorption and gas permeability.
Mechanical properties Mechanical properties PVC has high hardness and mechanical properties. It increases with the molecular weight of the molecular weight, but decreases with increasing temperature. The mechanical properties of rigid PVC are good, and its elastic modulus can reach 1500-3000MPa. The soft PVC has an elasticity of 1.5-15 MPa. However, the elongation at break is as high as 200%-450%. The friction of PVC is generally, the static friction factor is 0.4-0.5, and the dynamic friction factor is 0.23.
Thermal properties The thermal stability of PVC is very poor, starting to decompose at 140 ° C, the melting temperature is 160 ° C. PVC has a small coefficient of linear expansion, is flame retardant, and has an oxidation index of up to 45 or more.
Electrical properties Electrical properties PVC is a polymer with good electrical properties, but due to its large polarity, electrical insulation is not as good as PP and PE. Dielectric constant, dielectric loss tangent and volume resistivity are large, corona resistance is not good, generally suitable for medium and low voltage and low frequency insulation materials.
Environmental performance: PVC is resistant to most inorganic acids, alkalis, salts, and most organic solvents. Suitable for medicine, chemical anti-corrosion materials.
