RTP PPS

Liquid crystalline polymer, 543 RTP Compounds BSD PolyCarylene ether sulfone), 270 RTP PPS (Series)... 

Beer, J. M., A. F. Sarofim, L, D, Timothy, S. P. Hanson, A. Gupta, and J. M. Levy, "Two phase processes involved in the control of nitrogen oxide formation in fossil fuel flames," Proceedings of the Joint Symposium on Stationary Combustion NO Control, U.S. Environmental Protection Agency and Electee Power Research Institute, IERL-RTP-1086, Vol. 4, pp. 43-83, October 1980. 

Huffinann, D. (1997). RTP bio-ciude A combustion/emissions review. In Bridgwater, A. V. Boocock, D. (eds.). Developments in thermochemical biomass conversion. London IBackic Academic Professional. Pp. 489 - 494. 

Burbank, D. A. Wang, S. C. Proceedings The Fifth Industry Briefing on IERL-RTP Lime/Limestone Wet Scrubbing Test Programs (December 1979), EPA-600/9-80-032, NTIS PB 80-199813, July 1980, pp. 27-113. 

C. Schaper, M. Mehrdad, K. Saraswat, and T. Kailath, Control of MMST RTP Repeatability, Uniformity, and Integration for Flexible Manufacturing, IEEE Trans. Semiconductor Manufact., 7, pp. 202-219,1994,... 

PPS and PEEK blended with a fluoro(co)-polymers and reinforced with either CF or GF were wear resistant with a short break-in period for forming a self lubricating film [Davies and Hatton, 1994]. Many commercial blends contain fluoropolymers (primarily PTFE) for the improved weatherability, wear and solvent resistance SUPEC — self-lubricating blend of crystalline PPS with PTFE and 30 wt% GF, Lubricomp blends from LNP and similar/JTP blends from RTP Co. (e.g., 15 wt% PTFE, 30 wt% GF and any of the following resins ABS, PA, PEST, PC, PE, PEI, POM, PP, PPE, PPS, PS, PSF, PVDF, SAN, TPU, PEEK, PES, etc.), Sumiploy from Sumitomo Chem. Co., etc. [Utracki, 1994]. 

RTP produces series of engineering thermoplastics lubricated with PTFE, molybdenum disulfide, graphite powder, silicone and glass, carbon and aramid fibers. Grades AR, TEE and SI include respectively aramid fibers, PTFE (10-20%) and silicone fluid (0.5%). Matrix materials used include PA-6, PA-66, PA-6,10, PA-12, PC, POM, PET, PBT, PSF, PPS, PEI, PEEK and polyphthalamide. The blends have been developed for injection molding of various parts for engineering applications. 

All TP or TS matrix property can be improved or changed to meet varying requirements by using reinforcements. Typical thermoplastics used include TP polyesters, polyethylenes (PEs), nylons (polyamides/ PAs), polycarbonates (PCs), TP polyurethanes (PURs), acrylics (PMMAs), acetals (polyoxymethylenes/POMs), polypropylenes (PPs), acrylonitrile butadienes (ABSs), and fluorinated ethylene propylenes (FEPs). The thermoset plastics include TS polyesters (unsaturated polyesters), epoxies (EPs), TS polyurethanes (PURs), diallyl phthalates (DAPs), phenolics (phenol formaldehydes/PFs), silicones (Sis), and melamine formaldehydes (MFs). RTSs predominate for the high performance applications with RTFs fabricating more products. The RTPs continue to expand in the electronic, automotive, aircraft, underground pipe, appliance, camera, and many other products. 

The main RTPs are nylons and polypropylenes, both as granules for molding and as glass mat TPs (GMT). Other glass-reinforced TP, particularly PET, PBT, PC and PPS, are steadily increasing in use. The value of the compounds is relatively high, encouraging some effort to recycle them. The overall use of RTPs remains relatively small, while the applications are necessarily technical and may be difficult to separate from other materials. 

Polyarylene sulfides (PPS), (-(j)-S-)n, was commercialized in 1971 as Raytori R. The resin is semicrystalline with Tg = 194 °C and T = 288 °C thus Tprocess > 290 °C. PPS is difficult to mold - it tends to adhere to the mold surface and to flow into mold crevices. It has also relatively poor impact resistance. Blends have been developed to alleviate these problems, e.g., with 25 wt% of either PSF, PPE, or PC (BaUey 1977). Commercial PPS blends are available with PPE (e.g., DlC PPS commercialized in 1982, NoryF APS), PARA (RTP 1300), or PTFE (Lubricomp PPS). They show good processability with reduced flash, are tough, excellent wear, as well as high heat, solvent, chemical, and oxidation resistance. 

Table 12.18 Wear Resistance Data Determined by Thrust Washer Test Per ASTM D3702 of RTP 1300 Series Polyphenylene Sulfide (PPS) Compounds Against 1018 C Steel [20]...

Wear resistance data in metric units for 1300 series polyphenylene sulfide (PPS) compounds. RTP Company, . 

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