Triax

PPO/PA blend for passenger cars. A new conductive version of the on-line paintable Triax PA/ABS blend is proposed by Bayer. Heat deflection temperature is in the 180-200°C range ensuring resistance to the temperatures encountered in the drying ovens during cathodic dip coating. 

Trade name examples Technyl Alloy, Terblend N, Triax. 

PL and PLE spectra of the composite opal/garnet were obtained by using the xenon lamp (450 W) connected to Triax 180 Jobin Yvon monochromator. In both cases Ocean Optics HR 4000 spectrometer has been used for detection. 

A TRIAX 550 spectrometer attached to an Andor -90°C cooled CCD detector was used for all spectroscopic measurements. Ar laser lines at 488.0 nm and 514.3 nm were used. Reactions were monitored by time-resolved Raman spectroscopy, sequentially setup for two of three separate regions of interest within the spectral range. This enabled, for example, collecting information about the carboxylation/decarboxylation and hydration/dehydration processes by monitoring the various CO and CH vibration modes. This technique provided spectra in each region only after the collection of the spectra in other regions, and hence not favorable for faster kinetics. However, inclusion of OH and H2 peaks gave a reasonably quantitative estimate on the extent of the hydrothermal reaction and valuable information for mass balance calculations (see further details in the experimental results for each system)... 

Triax . [Monsanto Monsanto Eurc ] Nylon/ABS or PVC/ABS alloys engineering thermqplasdcs. 

Formation of co-continuous of either a brittle or pseudo-an elastomer may result in of toughness, without greatly engineering properties of the resin. Commercial blends of POM, PA, PC, or PET with available (viz. Triax series). 

In 1983, Monsanto developed blends with co-continuous morphology, Triax 2000. These alloys comprised PC, ABS, and styrene-methylmethac-rylate-maleic anhydride (SMMA-MA) [Jones and Mendelson, 1985]. One year later, PC was reactively blended with either ABS, SAN-GMA, and NBR, or with graft copolymers of acrylonitrile-butadiene-a-methyl styrene-methyl-methacrylate (MeABS) and acryloiutrile-a-methyl styrene-methyl methacrylate copolymer (MeSAN) [Kress et al., 1986]. The blends were commercialized by Bayer as Bayblend . 

The first ABS/PA blends were announced in 1961 [Grabowski, 1964b, 1966], and much later introduced as Elemid . Triax -1000 is an alloy of PA-66 with ABS-MA, having the phase co-continuity [Lavengood et al., 1986, 1988]. PA-6 was also blended with BR grafted with styrene andMA (SBMA) [Asahi-Dow Ltd., 1981]. Later, transparent blends of copolyamide(s), PA, and ABS were developed [Fox et al., 1989]. 

PC/ABS (Alphaloy . Bayblend Z Cvco/ov . Denka HS. Dialoy C. Excelov . lupilon . Lvnex B, Malecca P, MB2200. Multilon . Novaloy S. Proloy /Lexan . Pulse . PX. Ryulex , SC 250, Techniace TC, Toplex . Triax 2000. ABS/PC 7901)... 

Eor PA/ABS blends, e.g., Alphaloy MPA, Elemid , Diaaloy N, Kane ace MUH, Malecca S, Maxloy A, Monkalloy N, N5, Novaloy -A, Stapron N, SX, Techniace TA, Toyolac Adloy, Triax 1000, Ultramid ), single or twin screw extruders are suitable. However, the latter are preferred. Typical ABS extrusion procedure should be followed. Eor two-stage screws, a first stage compression ratio of 25-2.1 and pump ratio 1.5-2 are recommended. 

ABS/PVC blends (e.g., Triax CBE, Enplex tm) are formulated to provide a broad window of molding conditions. Because of the presence of PVC, shear or thermal degradation must be minimized. Shot size should be about 50% of machine capacity — less than 35% will result in a long residence time, whereas in excess of 65% will increase plasticating time, both of which create conditions for resin degradation. High compression screws should be avoided since they generate excessive shear heat — a linear taper screw with a compression ratio between 1.5 and... 

Owing to the presence of PA, the PA/ABS blends (Triax 1000) have narrow processing window. Forming temperature range from 235 to 250°C. Prior to thermoforming, the stored sheets must be dried at 85°C for 8 hours. 

Bayblend T, Triax 2000) PC/ABS blends require more heat to form than ABS. This can be accomplished by means of longer cycles and/or increased stock temperamre - the normal forming temperarnre for the blend is 205-230°C, i.e., 10°C higher than that for ABS. Stored sheets need to be dried at 82-93°C for up to 8 hours. 

Styrenic blends ABS blends ABS/PC Monsanto Triax 2122 Partial miscibility Amorphous/ Amorphous... 

ABS/PA Monsanto Daicel (Japan) Monsanto Triax 4000 Triax 1000 Grafting(R) Amorphous/ Crystalline... 

PA/ABS Monsanto Triax 1000 Graft-coupling Crystalline/ Amorphous... 

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