PVC Plastics Testing

Polyhedron Laboratories offers product and materials testing for PVC products. Our lab can test to ASTM standards, and provide a full suite of PVC testing services.

PVC Information

PVC, or polyvinyl chloride, is the third most widely used plastic in the world after polyethylene and polypropylene. By 2016, production of PVC is expected to exceed 40 million tons annually. It is widely used in construction and plumbing applications due to its rigidity, durability and chemical and biological resistance. In addition, it is cheaper to manufacture than some other thermoplastics due to the fact that chlorine is a major component and it uses much less petroleum in manufacture than the other plastics.

The addition of plasticizers, such as phthalates, to polyvinyl chloride results in a softer, more flexible product. In this form, PVC is used in the clothing and upholstery industries for products with a leather-like texture, wire and cable insulation and signs.

PVC is a thermoplastic vinyl polymer consisting of repeating ethenyls that have one of their hydrogens replaced with a chloride.

The following table shows some common properties of PVC, but the values can vary depending on the formulation.

Properties of PVC

PROPERTIES ASTM TEST METHOD COMMON VALUES AND RANGES

Processing temperature range, °C  -Injection

204

Tensile strength at break, psi

D638

5500-6000

Elongation at break, %

D638

85

Tensile yield strength, psi

D638

6500

Compressive strength (rupture or yield) psi

D695

13,000

Flexural strength (rupture or yield) psi

D790

15,000

Tensile modulus, 103 psi

D638

280-440

Compressive modulus, 103 psi

D695

450

Flexural modulus, 103 psi  (23°C)

D790

456

Izod Impact, ft·lb/in of notch

D256A

0.65-15.0

Hardness                        Shore D

D2240

75

Deflection temperature °C      264 psi

D648

55-100

Specific gravity (g/cm3)

D792

1.43

Water Absorption, %     (24 hrs.)

D570

0.05-0.10

Dielectric strength short time, v/mil

D149

450-550

 

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