The difference between pvc and tpe and performance comparison
Time of issue:2021-12-24
Pvc and tpe are currently the rubber and plastic industry is more commonly used in the two major materials, its performance is partly similar, so many production-oriented processing plants inevitably encounter a tangled situation when selecting materials. Therefore, the plastic Bo to the structure of the two materials, specific gravity, hardness and part of the physical and chemical properties to do a comparison, analysis of the differences between pvc and tpe.
Structure difference
tpe: hydrocarbon
pvc: hydrocarbons containing chlorine
Specific gravity difference
tpe: most tpe material specific gravity in 0.84-1.2, the specific gravity is lighter, the same mass (kg) can produce more volume of products
pvc: specific gravity is generally 1.3-1.4
Hardness difference
tpe: wide range of hardness, 0A-70D
pvc: soft rubber material for example, the hardness is generally 50A-90A
Difference in mechanical properties
tpe: excellent tensile resistance, tensile strength up to more than ten MPa, elongation at break up to 10 times, high mechanical strength
pvc: high mechanical strength
Temperature resistance difference
tpe: long-term temperature resistance of more than 70 ℃, the highest use temperature of 149 ℃, in the oxygen environment decomposition rate of more than 270 ℃, in low temperature -60 ℃ can still maintain good form, high temperature resistance
pvc: temperature resistance -15 ℃ -60 ℃, light, heat stability is poor, in more than 100 ℃ environment or light environment can make the material drop softening point of 80 ℃, high temperature 130 ℃ environment decomposition, and precipitation of hydrogen chloride irritating gas
Chemical resistance performance difference
tpe: corrosion resistance, ozone resistance, ozone aging (38 ℃) 100 hours performance reduction of less than 10%, resistance to general chemicals (water, acid, alkali, alcohol solvents), can be short-term immersion in solvents or oil
pvc: high chemical resistance, corrosion resistance but not ozone resistance. In strong acids such as concentrated sulfuric acid, concentrated nitric acid will corrode, and can not be in contact with aromatic hydrocarbons and chlorinated hydrocarbon substances
Combustion difference
tpe: the material does not contain halogen, burning low smoke non-toxic, some of the material burning aromatic odor release
pvc: release a lot of smoke, release irritating gas
As can be seen above, tpe in most of the performance play a better than pvc materials, if production-oriented enterprises to produce environmentally friendly, harmless to the human body, the environment, green products, then elected to use tpe environmentally friendly materials to enhance the competitiveness of products.
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