Polymers of vinyl chloride thermoplastic materials are amorphous and have a 'good chemical resistance (good resistance to light and weathering if stabilised).
And 'can greatly improve the impact resistance, mixing plastics inflection - elastic or after copolymerisation.
Moreover PVC can be mixed with plasticizers obtaining several advantages.
For these and many favourable characteristics PVC has a wide area of use
PVC plasticizer without PVC plasticizer
(Percentage of plasticizer from 20% to 50%)
Watt Density ':
From 1.38 to 1.4 g/cm3
From 1.20 to 1.35 g/cm3
Structure:
Thermoplastics predominantly amorphous
Low water absorption
How rigid PVC but with plasticizer molecules inserted between the polymer chains; amorphous
Mechanical characteristics:
Rigid, tough, sensitive impact strength, high mechanical strength.
The impact resistant types are less sensitive impact
I am greatly influenced by the type and proportion of plasticizer (distinguishable by Shore A hardness)
Employee in rubber-elastic is flexible, plasticized, good wear resistance, but low tear resistance
Electrical characteristics:
satisfied characteristics of isolation, are not particularly good at current strips.
High dielectric losses especially at high frequencies.
Worse compared to rigid PVC
Media and resistance superficial puncture, high dielectric losses
Thermal characteristics:
Handles up to +60 ° C
(Copolymers up to +80 ° C)
became fragile to -5 ° C
The impact resistant types -25 ° C
Burn with formation of soot
Increasing the temperature decreased sharply mechanical resistance and hardness; usable with low stress to approximately +60 ° C (with special plasticizers up to 105 ° C)
became fragile from -10 - 50 ° C according to the percentage of plasticizer.
Following the content of plasticizer, mostly burns.
Resistant to:
Salt solutions, mild acids, alkaline solutions, not polar solvents, gasoline, mineral oil, fats, alcohol.
Good resistance to light and weathering if sufficiently stabilized.
Solutions salt, inorganic acids media concentration, partly gasoline, oil, alcohol, alkaline solutions.
Good resistance to light and ageing.
Not resistant to:
Polar solvents, esters, chlorinated hydrocarbons, ketones, aromatic hydrocarbons, benzene, halogen liquids, steaming sulphuric acid, concentrated nitric acid.
Organic solvents, aqueous solutions (due to the migration of plasticizer), benzene
A normal temperatures often occurs sweating of a plasticizer or migration with a possible weakening