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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 colors They are available in powder (which gives 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

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

• 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 

  kitchen, utensils and dinner ware.

• Bathroom accessories and electrical components.

• Precision medical components. 

 

Packing:
  • 25Kgs. nett laminated polyethylene bags

Handling:

 

  • It is advisable to wear a dust musk while emptying the bags . Hand 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 materials Flow and its mouldability.