ADDITIVES | POLYAMIDES
Right: Milliken’s Resist XTR Orange 9798 colorant is designed for demanding EV connector applications
service life of parts. “The carbodimide additives are beneficial for applications such as housings for filters in motors,” says CEO Richard Marshall. “The polymeric version (ST-HT10) is more stable, up to 350°C, so it is the better perform- ing option for demanding uses. ST-HT13 is a monomeric version based on the same chemistry.” He says the additive can be used at low dosing levels, such as 0.3% in PA (Figure 3). Chain extender additives can inhibit hydrolysis
and improve properties of recycled PAs. CAI Additives’ polymeric epoxy functional chain extender, ST-CE37, is said to reduce viscosity and improve mechanical properties in PA and other condensation polymers. The company has also introduced the ST-PA216 additive series, which serve as lubricants and melt flow improvers for semi-aromatic PAs such as PA6T, PA9T, PA10T, PA MXD6, PA MXD10. It says perfor- mance is better than traditional lubricants.
Also new to the CAI Additives’ product line are laser-mark- ing additives formulated to provide improved marking contrast, faster marking, and more defined line edge detail in
PAs and other resins. ST-83B is intended for black patterns in
light-coloured plastics with ST-85D intended for white patterns in dark plastics.
Orange effects EV drive systems operate at voltages far above current ICE electrical systems. As a safety measure, high voltage EV connectors and cables are coloured bright orange (the RAL 2003 shade). Milliken’s new Resist XTR Orange 9798 is de- signed to provide this in high performance polymers including PAs. A challenge in developing orange colorants is to find an alternative to cadmium-based pigments that have the required heat stability during high temperature processing as well as good heat aging performance in the final part. Speaking at the
IMAGE: MILLIKEN
Page 1 |
Page 2 |
Page 3 |
Page 4 |
Page 5 |
Page 6 |
Page 7 |
Page 8 |
Page 9 |
Page 10 |
Page 11 |
Page 12 |
Page 13 |
Page 14 |
Page 15 |
Page 16 |
Page 17 |
Page 18 |
Page 19 |
Page 20 |
Page 21 |
Page 22 |
Page 23 |
Page 24 |
Page 25 |
Page 26 |
Page 27 |
Page 28 |
Page 29 |
Page 30 |
Page 31 |
Page 32 |
Page 33 |
Page 34 |
Page 35 |
Page 36 |
Page 37 |
Page 38 |
Page 39 |
Page 40 |
Page 41 |
Page 42 |
Page 43 |
Page 44 |
Page 45 |
Page 46 |
Page 47 |
Page 48 |
Page 49 |
Page 50 |
Page 51 |
Page 52 |
Page 53 |
Page 54 |
Page 55 |
Page 56 |
Page 57 |
Page 58 |
Page 59 |
Page 60 |
Page 61 |
Page 62 |
Page 63 |
Page 64 |
Page 65 |
Page 66
