Melamine moulding compound
Melamine moulding compounds ( thermosetting plastics) are amino moulding compounds composed of melamine formaldehyde and alpha-cellulose as filling material with the addition of lubricant, hardening agent & pigments. Thermosets offer many advantages over basic thermoplastics and are suitable for compression, transfer or injection moulding. They are produced in a precise, brilliant, light fastness and vibrant range of colours They are available in powder (which gives a much better surface) or granular form. Melamine moulding compounds are strong, glossy, very very durable and highly resistant to staining. They have better resistance to heat, solvents, chemicals, moisture, electricity and scratching than urea moulding compounds.
| Parameter | |||||
|---|---|---|---|---|---|
|
Parameter |
Value |
Unit |
Standard |
Appearance |
Solid – granular/powder form |
|
|
|
Colour |
Different according to customer requirements
|
|
|
|
Flow |
(160 – 220)* (100 – 140)** |
mm x 10-2 |
|
|
CT |
(36 – 44)* (50 – 60)** |
sec |
|
|
Bulk density |
0.600 – 0.650 |
gm/cm3 |
ISO 60 |
|
Specific weight |
1.4 - 1.5 |
gm/cm3 |
Din 7708 |
|
Humidity (60 0C) |
2 max |
% |
|
|
Volatile matter (110 0C) |
4 max |
% |
|
|
Grain size |
According to customer requirements |
mm |
|
|
Shrinkage |
0.9 max |
% |
Din 7708 |
|
Water absorption |
≤ 200 |
mg |
ISO 14528 |
|
Mechanical Properties |
|
||
|
1- Stress at break |
( ≥ 40)* (≥ 50)** |
Mpa |
ISO 14528 |
|
2- Flexural strength |
(≥ 80)* (≥ 90)** |
Mpa |
ISO 14528 |
|
3-Charpy Impact strength |
(≥ 5)* (≥ 6)** |
KJ/m2 |
ISO 14528 |
|
4- Charpy Notched Impact strength |
(≥ 1.2)* (≥ 1.4) ** |
KJ/m2 |
ISO 14528 |
|
Thermal Properties |
|
|
|
|
1-Temperature of deflection under load Tf (1.8) |
≥ 155 |
0C |
ISO 14528 |
|
2- Temperature of deflection under load Tf (8.0) |
≥ 110 |
0C |
ISO 14528 |
|
3- Flammability (glow bar) , BH |
≤ BH2-10 |
- |
ISO 14528 |
|
4- Flammability (UL classification) |
V-0 |
Grade |
UL 94 |
|
Electrical Properties |
|
|
|
|
1-Surface Resistivity |
≥ 1010 |
Ω |
ISO 14528 |
|
2- Proof Tracking Index |
≥ 600 |
- |
ISO 14528 |
|
Brabender Plastograph |
Plastogram |
- |
Din 53764 |
|
Colour testing |
Colorimeter(x rite 8400) |
- |
|
- Compression moulding
- Injection moulding
|
Preheating* condition |
Moulding condition* |
||||
Temperature,0C |
Time, sec |
Temperature,0C |
Pressure Kg/cm2 |
Curing time sec/mm |
Time of production |
|
80-90 |
30-60 |
160 – 170 |
400 min |
11 – 12 |
According to shape, thickness, ……. of the product |
All of these items may be variable according to customer pressing conditions.
Packing: • 25Kgs. net laminated polyethylene bags.
Handling: It is advisable to wear a dust mask while emptying the bags. Hands should be thoroughly washed at the end of the working day and before meals.
Storage: Storage at 250c gives stability for 6 months
Avoid moisture, dirt, packaging damage &high temperature which affect the material's Flow and mouldability
Major application areas
- Melamine thermosets are approved for contact with foodstuffs and they don't affect the food's flavor even at high temperatures so they are used in the kitchen, as utensils, and dinnerware.
- Bathroom accessories and electrical components.
- Precision medical components.
