Duramid N6-1520 BK-104

Supplied by DBL International, Inc.

Description:

Duramid N6-1520 BK-104 is a utility grade 35% glass and mineral reinforced jet black nylon 6 injection moulding compound offering a balance of engineering properties combined with excellent dimensional stability, low warp and good resistance to sink-mark formation.

Properties:

The combination of glass fibres and mineral in a nylon moulding compound enhances its performance characteristics. Duramid N6-1520 BK-104 exhibits high strength, rigidity and heat distortion temperature and its resistance to creep under load is excellent. Like conventional nylons, Duramid N6-1520 BK-104 maintains its inherent chemical resistance, particularly to greases, oils and hydrocarbons.

Processing Guidelines

Melt Temperature:

Duramid N6-1520 BK-104 exhibits a crystalline melting point of 215°C and a melt temperature range of 271°-293°C is recommended for most applications.

Typical Temperature Profile:
Zone°C
Rear249-271
Middle260-282
Front271-293
Nozzle271-293

Mould Temperature:

Duramid N6-1520 BK-104 can be processed over a wide range of mould temperatures, however for applications where aesthetics are critical, a mould surface temperature of 82°-93°C is required.

Pressures:

Injection and packing pressures are generally within the limits of 500-1800 psi. Injection pressure controls the filling of the part and should be applied for 90% of ram travel. Packing pressure affects the final dimensions and can be effectively used in controlling sink marks and shrinkage. It should be applied and maintained until the gate area is completely frozen off. Back pressure can be utilized to provide uniform melt consistency and reduce trapped air and gas. A maximum back pressure of 50 psi is recommended to minimize glass fibre breakage.

Fill Rate:

Fast fill rates are recommended to ensure uniform melt delivery to the cavity and prevent premature freezing. Surface appearance is directly affected by injection rate. The fast fill enables the glass fibres to become displaced by a resin-inch surface at the mould interface. Injection speeds of one inch of ram travel per second are generally required for obtaining good surface qualities.

Regrind:

Recommended regrind levels are no more than 25-30%. Higher levels may affect part performance due to excessive glass fibre breakage.

Material Handling:

Duramid N6-1520 BK-104 is supplied in sealed containers and drying prior to moulding is not required. If drying becomes necessary a dehumidifying or desiccant dryer operating at 82°C is recommended. Drying time is dependent upon moisture level and resin should be dried to less than 0.12% moisture. Further information on safe handling procedures can be obtained from the product Material Safety Data Sheet.

Typical Physical PropertiesDAMASTM Test
Tensile Strength, yield115 MPaD-638
Flexural Strength175 MPaD-790
Flexural Modulus7200 MPaD-790
Notched Izod Impact Strength 40 J/mD-256
Specific Gravity1.40D-792
Mould Shrinkage (1/8" bar)0.004 in/in-
Melting Point220 °CD-789
Heat Deflection @ 1.8 MPa200 °CD-648

DISCLAIMER Although all statements, information, and data given herein are believed to be accurate, they are presented without guarantee, warranty, or responsibility of any kind, express or implied. Statements or suggestions concerning possible use of our products are made without representation or warranty that any such use is free of patent infringement, and are not suggestions to infringe any patent. The user should not assume that all safety measures are indicated or that other measures may not be required. Further information concerning safe handling procedures can be obtained from the Product Material Safety Data Sheet.

The above specification are believed to be accurate. They are not intended as a representation of fact or warranty of any kind. Buyers must make their own representative test and assume all risks of use whether used alone or in combination with other products.

© 1998 DBL International, Inc.