Melochem 791
The Melochem 791 Molding Compound in powder form are based on melamine-formaldehyde resins fortified with high-class cellulose as reinforcement and further modified with minor amounts of special purpose additives, pigments, cure regulators and lubricants. The Melochem 791 Molding Compounds can be supplied in most colors from translucent pastels to black. Molded parts are free from odor, light stable and have good moisture resistance. Hard and Glossy surface with excellent scratch and chemical resistance. Fats, oils and common organic solvents like alcohol and acetone do not attack the materials and they are also resistant to surfactants and weak bases. They will also withstand attack from weak acids fro a shorter duration. Oxygen index is 40% and is achieved without the use of external flame retardants. No halogens are present in the composition.
Properties
- Physical Form
- Powder
- Solid
Product families
Applications
- Consumer Goods — Appliances & Electronics
- Consumer Goods — Housewares
- Interior
- Other Industrial Applications
- Consumer Electronics
- Other Devices & Assemblies
- Food & Beverage Packaging
- Housings & Enclosures
- Jacketing & Insulation
Product Families
- Other Thermoset Resins
Other characteristics
- Brand
- Melochem
- Density
- 1500.0 - 1500.0 kg/m³
- End Uses
Appliances, Buttons, Cable Jacketing, Electrical/Electronic Applications, Household Goods, Housings, Kitchenware
- Polymer Name
- Melamine Formaldehyde (MF)
- Tensile Strength
- 45.0 - 45.0 MPa
- Processing Methods
- Compression Molding
- Markets
- Automotive & Transportation
- Consumer Goods
- Electrical & Electronics
- Industrial
- Printing & Packaging
- Cure
- Chemical Cure
- Technology
- Plastics
- Fillers Included
- Cellulose
- Natural Fiber
- Technical Details
Recycling :; Products made out of our Melochem 791 grades can be recycled. The normal method is to grind used parts, scrap etc. into a particle size suitable for plastic blast media. This blasting product is then used for cleaning sensitive metal surfaces as an alternative to conventional harsh abrasives and chemical based stripping agents.; Environment :; Most components of our melamine-formaldehyde resins are derived from renewable natural resources. On decomposition, products made from melamine- formaldehyde compounds end up as natural harmless elements such as nitrogen and carbon dioxide. Moreover, as potentially carcinogenic flame-retardants are not required, the risk to health is reduced. Therefore the Melochem 791 thermoset compound is the right choice for customers who are working with environmental management systems and sustainable development.
- Additives Included
- Lubricant (Unspecified)
- Pigment (Unspecified)
- Material Features
- Good Electrical Properties
- Good Light Stability
- Good Moisture Resistance
- Good Scratch Resistance
- Good Surface Gloss
- High Hardness
- Low Water Absorption
- Non-Halogenated
- Chemical Resistance
- Acetone
- Alcohols Aliphatic
- Packaging and Storage
Available in bags, drums, gaylords or big-bags.; Store product in cool and dry indoor space.; Storage below 20°C will provide a shelf life of minimum 6 months.
- Certifications and Compliance
- UL Certified
- Plastics and Elastomers End Uses
- Appliances
- Buttons
- Cable Jacketing
- Electrical/Electronic Applications
- Household Goods
- Housings
- Kitchenware
- Plastics and Elastomers Functions
- Resin
- Plastics and Elastomers Processing Methods
- Compression Molding
Technical data
Table 1 of 2
4 rows| Characteristic | Value | Unit | Method |
|---|---|---|---|
| Flexural Strength | min. 80 | MPa | ISO 178 |
| Tensile Strength | min. 45 | MPa | ISO 527 |
| Impact Strength | min. 5 | KJ/m² | ISO 179/1 eU |
| Notched Impact Strenght | min. 1.1 | KJ/m² | ISO 179/1 eA |
Table 2 of 2
15 rows| Characteristic | Value | Unit | Method |
|---|---|---|---|
| Shrinkage | 0.6 - 0.8 | % | ISO 2577 |
| Post Shrinkage | 1.0 - 1.3 | % | ISO 2577 |
| Density | 1.5 | g/cm³ | ISO 1183 |
| Water Absorption | max. 200 | mg | ISO 62 |
| HDT (8.0 MPa) | min. 110 | °C | ISO 75 |
| Glow Bar (960°C, 180 sec.) | max. B H2-10 | Class | IEC 707 |
| Flammability | V-0 | Class | UL 94 |
| Oxygen Index | min. 40 | % | ASTM D2863 |
| Surface Resistance | min. 10 | logΩ | IEC 93 |
| Dissipation Factor (1 kHz) | max. 0.1 | Delta tan | IEC 250 |
| Dielectric Constant | 5 | — | DIN 53483 |
| Proof Tracking Index | min. 600 | V | IEC 112 |
