Styrene Maleic Anhydride copolymer - SMAc

Polymer Type

Thermoplastic

Advantages

May be transparent.  Higher heat deflection temperature (105°C/ 221°F) than highest SAN (103°C/217°F) or Polystyrene (80°C/176°F).  Similar price to ABS.

Disadvantages

Limited chemical and UV resistance and is flammable.

Typical Properties

Property

Value

Density (g/cm3)

1.08

Surface Hardness

RL105

Tensile Strength (MPa)

52

Flexural Modulus (GPa)

3

Notched Izod (kJ/m)

0.03

Linear Expansion  (/°C x 10-5)

7

Elongation at Break (%)

1.8

Strain at Yield (%)

2

Max. Operating Temp. (°C)

75

Water Absorption (%)

0.1

Oxygen Index (%)

19

Flammability UL94

HB

Volume Resistivity (log ohm.cm)

15

Dielectric Strength (MV/m)

12

Dissipation Factor 1kHz

0.001

Dielectric Constant  1kHz

2.5

HDT @ 0.45 MPa (°C)

110

HDT @ 1.80 MPa (°C)

105

Material. Drying  hrs @ (°C)

2 @ 90

Melting Temp. Range (°C)

230 - 270

Mould Shrinkage (%)

0.4

Mould Temp. Range (°C)

50 -  70

Applications

Cooking utensils (particularly microwave), interior parts for cars (lenses, ventilation ducts), business machine housings.

 

Source : Abstracted from Plascams

For more information on Plascams please visit RAPRA Technology Ltd.

 

Tell Us What You Think

Do you have a review, update or anything you would like to add to this article?

Leave your feedback
Submit