PVC (Polyvinylchloride)
Polyvinyl chloride (PVC) is a flexible or rigid
material that is chemically nonreactive. PVC has a broad range of applications,
from high volume construction related products to simple electric wire
insulation and coatings. Rigid PVC is easily machined, heat formed, welded, and
even solvent cemented. PVC can also be machined using standard metal working
tools and finished to close tolerances and finishes without great difficulty.
PVC accepts paint and performs well under most silkscreening processes. PVC
resins are normally mixed with other additives such as impact modifiers and
stabilizers, providing hundreds of PVC based materials with a variety of
engineering properties. There are three broad classifications for rigid PVC
compounds: Type I, Type II, and CPVC. Type II varies from Type I due to greater
impact values, but lower chemical resistance. CPVC has greater high temperature
resistance. These materials are considered "unplasticized", because they are
less flexible than the plasticized formulations. Type I, II and CPVC are
normally available in rod,
sheet, slab, pipe, tubular bar, fittings and valves. "Plasticized" PVC is
available in sheet, film, fittings, flexible tubing, and pipe.
Available PVC Products:
Flexible PVC Tubing
Vinyl Strip Doors
Vinyl Welding Curtains
PVC Perforated Sheet
PVC Wire Reinforced Sheet
Clear Flexible Vinyl Rolls and
Sheet
PVC Clear Planished and Rigid Sheet
Custom PVC Flexible Liners
PVC Cement
Properties:
- High strength
- Economical
- Dimensional stability
- Good weather resistance
- High impact strength
- Clarity
- Colorability
- Flexible or rigid
- Chemically inert
- Ease of fabrication
- Tasteless,odorless, non-toxic
- Good electrical properties
Applications:
- Nuts
- Filters
- Signs
- Tanks
- Pipes
- Bolts
- Valves
- Bushings
- Tank and pool liners
- Laboratory equipment
- Ducts
- Sprinkler systems
- Photomounting
- Wallcoverings
- Pump parts
- Fittings
Excelon System
CPVC Pipe, Rod & Bar
PVC Rod
PVC Square Bar
PVC Rectangular
Bar
Weld-on Cement and Welding Rod
PVC Hollow, Angle
and Hex Bar Stock
Joining and H
Strips
Type I and Type II PVC Sheet
CPVC Sheet
Typical properties of polyvinyl chloride
ASTM test |
Property |
Rigid |
Flexible |
PHYSICAL
|
D792
|
Specific
gravity |
1.30-1.58
|
1.20-1.70
|
D792
|
Specific
volume (in.�/lb.) |
20.5-19.1
|
-
|
D570
|
Water
absorption, 24 hours, 1/8 inch thick (%) |
0.04-0.4
|
0.15-0.75
|
MECHANICAL
|
D638
|
Tensile
strength (psi) |
6,000-8,000 |
1,500-3,500 |
D638
|
Elongation (%) |
50-150
|
200-450
|
D638
|
Tensile
modulus (10~5 psi) |
3.5-10
|
-
|
D790
|
Flexural
modulus (10~5 psi) |
3-8
|
-
|
D256
|
Impact
strength, izod (ft-lb/in. of notch) |
0.4-20.0
|
-
|
D785
|
Hardness, Shore |
65-85D
|
50-100A
|
THERMAL
|
C177
|
Thermal
conductivity (10~4 cal-cm/sec-cm~2-�C) |
3.5-5.0
|
3.0-4.0
|
D696
|
Coefficient of thermal expansion (10~5 in./in.-�F) |
1.2-5.6
|
3.9-13.9
|
D648
|
Deflection temperature (�F)
At 264 psi
At 66 psi |
140-170
135-180 |
-
|
ELECTRICAL
|
D149
|
Dielectric strength (V/mil) short time, 1/8-in. thick |
350-500
|
300-400
|
D150
|
Dielectric constant At 1kHz |
3.0-3.8
|
4.0-8.0
|
D150
|
Dissipation factor At 1kHz |
0.009-0.017 |
0.07-0.16
|
D257
|
Volume
resistivity (ohm-cm) At 73�F, 50% RH |
>10~16
|
10~11 to
10~15 |
D495
|
Arc
resistance(s) |
60-80
|
-
|
|