eFunda Polymers: Properties of Vinyl polymers and copolymers {copolymer, PVC / acrylic blends, molding and extrusion compounds}

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Calculators

Vinyl polymers and copolymers	List of Suppliers

State:	copolymer
Additives:	PVC / acrylic blends
Application:	molding and extrusion compounds

Material Properties

Mechanical Properties		Conditions
Mechanical Properties		State 1	State 2	ASTM
Elastic Modulus (MPa)	2346 - 2553	tensile		D638
Flexural Modulus (MPa)	2415 - 2622	23 ºC		D790
Tensile Strength (MPa)	45 - 49	at break		D638
Compressive Strength (MPa) at yield or break	47 - 59			D695
Flexural Strength (MPa) at yield or break	72 - 76			D790
Elongation at break (%)	35 - 100			D638
Hardness	106 - 110	Rockwell R		D638
Izod Impact (J/cm of notch) 1/8" thick specimen unless noted	0.5 - 6.4			D256A

Thermal Properties Conditions

Pressure State ASTM

Coef of Thermal Expansion (10^-6/ºC) 44 - 79 D696

Deflection Temperature (ºC) 78 - 88 0.46 MPa D648

75 - 85 1.82 MPa D648

Physical & Electrical Properties Conditions

State ASTM

Specific Gravity 1.26 - 1.35 D792

Water Absorption (% weight increase) 0.09 - 0.16 after 24 hrs D570

Dielectric Strength (V/mil);
1/8" thick specimen unless noted 480 D149

Processing Properties Conditions

Type ASTM

Processing Temperature (ºC) 183 - 199 injection molding

199 - 210 extrusion

Molding Pressure (MPa) 14 - 21

Compression Ratio 2 - 2.5

Linear Mold Shrinkage (cm/cm) 0.003 D955