|
 Sheet molding compound (SMC) sheets consist of chopped
fiberglass sandwiched between two layers of resin paste. Ready for
molding, the SMC is cut into sheets and the “charge pattern” (ply
schedule) is assembled on a 120-160 °C (250-325 ºF) heated mold. The
mold is closed, clamped, with pressure applied at 35-85 bars (500-1200
psi). The material’s viscosity drops, letting the SMC flow to fill the
mold cavity. After the resin has cured, the mold is opened and the part
can be removed manually or by using integral ejector pins.
Major SMC markets worldwide include high-volume electrical components
and the transportation industry (automotive and trucks essentially).
CRAY VALLEY develops and supplies not only SMC resins but also low
profile and low shrink additives for enhanced surface finish.
|
Reference
|
Comment
|
TDS
|
|
NORSODYNE M 0070 C |
Maleic resin for SMC parts |
PDF
|
|
NORSODYNE M 01510 |
Maleic resin, good aesthetics |
PDF |
|
NORSODYNE M 0550 I |
Maleic resin with good mechanical and aesthetic properties – SMC and
pultrusion |
PDF |
|
NORSODYNE M 28064 |
Fast ortho resin |
PDF |
|
NORSODYNE M 29245 |
Ortho resin for SMC-BMC |
PDF |
|
NORSOLOOK A 70091 |
Low profile additive (saturated polyester) to achieve good pigmentation |
PDF |
|
NORSOLOOK A 72084 |
Low profile additive (PVAc) for SMC |
PDF |
|
NORSOLOOK A 74094 |
Low profile additive (PMMA) to achieve good mechanical and thermal
properties |
PDF |
|
NORSOLOOK A 76086 |
Low profile additive for top Class A parts (SMC and pultruded profiles) |
PDF |
|
NORSOLOOK A 77072 |
Low profile additive (saturated polyester - PMMA ) for sanitaryware SMC |
PDF | |
