ECP 2747 is a proprietary TBA injection moulding compound utilising a special non-migratory additive system to give a permanently static dissipative material. The material is specially designed for applications requiring static control such as electronic safe handling areas and hazardous environments.
APPLICATIONS
Typical applications include:
- Production aids for the electronics industry
- (eg storage boxes bins etc)
– Audio/Hi-Fi accessories
– Static dissipating equipment housing
PROPERTIES
Surface Resistivity (Ω.) < 109 (DIN 53482)
Static Decay 5000/50V secs 0.25 (FTMS-101C)
secs 0.25 (JCI 140)
Specific Gravity (g/cc) 1.18
Tensile Strength (yield) (Mpa) 37.0 (ISO 527)
Flexural Modulus (Gpa) 1.7 (ISO 178)
Impact Strength:
(KJ/m2) 45.8 (BS 2873)
Melt flow index 250°C 5Kg Load 28 (ISO 1133)
dg./min.
Shrinkage (%) 0.6-0.8
RECOMMENDED PROCESSING CONDITIONS
MACHINE
It is recommended that an in-line reciprocating screw machine be used to injection mould ECP 2747.
CYLINDER TEMPERATURE
240-250°C. The optimum cylinder temperature will depend upon the size and complexity of the moulding.
MOULD TEMPERATURE
25-80°C. The optimum mould temperature will depend upon the size and complexity of the moulding.
MOULD DESIGN
Moulds should be designed to obtain rapid filling, and multiple gates for large area mouldings are recommended with the gate positioned to avoid possible formation of weld lines.
MACHINE AND MOULD WEAR
There is no evidence of any wear associated with this compound.
MOISTURE
ECP 2747 can absorb moisture, therefore, prior to moulding please ensure thorough drying. Materials should be re-dried if all the material is not used within 2-3 hours of opening the bag. Excess moisture may show as splash marks on the surface of the finished mouldings. If necessary, the material should be re-dried. Typical drying conditions are 2-3 hours at 95C
USE OF REGRIND
Runners, sprues and scrap mouldings can be reground and blended with virgin materials. Regrind additions should not exceed 10% by weight of the virgin material otherwise some reduction in properties may be experienced.
HEALTH & SAFETY
CAUTION – THIS MATERIAL IS ELECTRICALLY STATIC DISSIPATIVE
As this material does not have the insulting properties normally associated with polymers, due safety precautions must be taken in use and it is recommended that all products made from this material be suitably labelled.
