Elastomer alloys

Isqacs P.A., Elastomer alloys in medical products reduce costs and toxicity concern, Elastomerics, 121, 26, 1989. 

Summary of some general assessments concerning chemical behaviour of PPS at room temperature, which are not necessarily representative of PPS/elastomer alloys or of all grades of PPS. These general indications should be verified by consultation with the producer of the selected alloys and by tests under operating conditions. 

Riteflex BP. p oechstCdanese] Ther-moidastic polyester elastomer alloy for demanding qiplicSn e.g., automobile fasda, subject to abuse in service. 

Reactive mixing of crumb rubber with polypropylene by melting represents an innovative way of recycling old and waste rubber. A machine technology can easily be applied through injection molding. Results are examined for quasi-static and dynamic tests applied to the final materials. Moreover, the properties of this elastomer alloy remains constant after several recycling processes [59]. 

DVEA dynamic vulcanizate elastomer alloy EDC Eurocomp design code... 

A peroxide-induced reactive compounding of PP/GRT blends in a corotating twin-screw extruder was carried out to prepare thermoplastic elastomer alloys (Wiessner et al., 2012). The extrusion experiments showed that the width of the residence time distribution was the key parameter determining the mechanical properties of elastomer alloys, whereas the mean residence time had little effect. This was confirmed by performing both quasi-static and cyclic tensile tests. 

Delrin Acetal, acetal/elastomer alloy Dupont... 

Akuloy XT Polyamide-6/thermoset elastomer alloy DSM Plastics Int. 

Gaftuf High-impact PBT/elastomer alloys GAF Corp. 

Rynite PBT Poly(butylene terephthalate)/elastomer alloys with up to 30 wt% glass fibers E. I. du Pont de Nemours... 

EA-TPV Elastomer alloy thermoplastic vulcanizate EP Epoxide or epoxy (cured)... 

Softflex, Thermoplastic elastomer alloys. Network Polymers, Inc. 

Vynaprene, Elastomer alloy, CONDEA Vista Co. Vynite, PVC/nitrile rubber alloy, AIphaGary Corp. 

A673M—special/high impact (elastomer alloy) 50 0.25 815... 

B672X01—special/for blow molding (elastomer alloy) — 0.20 980... 

Figure 1 shows how PPS is toughened by elastomer alloying. The horizontal axis shows the flexural modulus of PPS and the vertical axis shows the notched izod impact strength. 

Figure 1. Effect of chemical treatment on toughness of PPS/elastomer alloy.

The elastomer alloy of the chemically treated PPS has a notch izod strength value of about 50 kg-cm/cm (2). 

Figure 3 is a photograph of the notched impact surface of the elastomer-toughened, chemically treated PPS. The elastomer of the fracture surface of PPS was extracted with chloroform. The diameter of the extracted hole is about 0.3 jiim. A scanning electron photograph of the notched impact fracture surface for the tough PPS-elastomer alloy shows a tough fracture. 

D. Janoff, J. Vicic, and D. Cain, Thermoplastic Elastomer Alloy, TPA, Sub sea Hydraulic Seal Development for Service Including Water-Based Fluids, Conference Papers, International Conference on Oilfield Engineering with Polymers, October 28-29, 1996, London, UK. 

Versollan TPU are second-generation high-performance rubberized TPU elastomer alloys that rank as some of the softest in their class at 45 Shore A. Made of specialty TPU from BASF Corp., Wyandotte, these alloys serve as handles and grips for hand and power tools, lawn and garden equipment, and recreational gears. They offer a balance of softness and high performance, and fast set-up rates relative to non-alloyed TPU. 

Engineering Uses Snap enclosures, clips, precision parts, friction bearings, gear wheels, cams, pump components, plumbing valves and fittings, blower fans, levers, shafts, machine mechanisms. Elastomer alloys for film hinges, fasteners and bindings. 

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