PEEK/Victrex

Polyetheretherketone Resin (PEEK). The resia was commercialized as Victrex PEEK by Imperial Chemical Industries, Ltd. (ICl) ia the late 1970s and by Amoco Chemicals Corp. ia the middle 1980s under the trade name Kadel. It is produced by both companies ia the United States. Kadel is beheved made by the displacement reaction of 4,4 -difluorodiphenyl ketone by the potassium salt of hydroquinone ... 

Property ASTM method Victrex PEEK resia Reiaforced Victrex PEEK 30% glass 30% carboa ... 

Polyether ether ketone (PEEK) (structure B of Table 21.5). This material was first prepared in the laboratories of ICI in 1977 and test marketed in 1978. The material is now marketed by Victrex as Victrex PEEK. 

APC (aromatic polymer composite), Hostatec, Ultrapek, Victrex PEEK... 

Johnson et al. (15) reported the first attempt to synthesize PEEK by polycondensation of bisphenolate with activated dihalides using DMSO as a solvent and NaOH as a base. High molecular weight polymers were difficult to obtain due to the crystallinity and the resulting insolubility of polymers in DMSO. To circumvent the solubility problem, Attwood and Rose (16) used diphenyl sulfone as a solvent, and the polymerization was carried out close to the melting point. Victrex PEEK was commercialized by the British company ICI in 1982 using this method. Since its commercialization, this thermoplastic polymer has been used in a wide range of applications, from medicine to the electronic, telecommunications and transport industries (automobile, aeronautic and aerospace) (17,18). 

Victrex PEEK is available in different viscosity grades suitable for extrusion processes, powder coating and compression moulding. PEEK 150P (Mw -40000 g/mol, d2.oc = 1.32 g/cm3, Tg = 147°C, Tm = 345°C), a coarse powder, presents the lowest viscosity grade and is the most suitable for potential aircraft applications. 

Victrex PEEK properties guide. 1997. pp. 6-7. Thornton Cleveleys, UK Victrex Technology Center. 

Polyaryletherketones (PAEK) are aromatic polymers with ether and ketone linkages in the chain, viz. PEK, PEEK, PEEKK, etc. Polyetheretherketone (Victrex PEEK), [-( )-C0-( )-0-( )-0-]jj, was commercialized in 1980 (Tg = 143°C, T = 334°C). Commercial blends of PEEK include, Sumiploy PEEK/PES/PTFE, PEEK/LCP, Cortem PEEK/ LTG, etc. Evolution of PEEK blends technology is outlined in Table 1.73. 

Poly(aryl ether ketones) belong to the class of engineering polymers. In early to mid-1970s, Raychem Corp. commercially introduced a poly-Caryl ether ketone) called Stilan . In this polymer, each ether and keto group is separated hy 1,4-phenylene units. In 1978, Imperial Chemical Industries PLC (ICI) commercialized a poly(aryl ether ketone) under the trademark Victrex PEEK. ... 

Victrex PEEK (Series) Poly(etheretherketone) Victrex PLC... 

Poly(etheretherketone), cable coating, 231, 296 Victrex PEEK (Series)... 

Figure 10.13 Stress vs. strain at 23°C for various Victrex PEEK resins.

Figure 10.15 Flexural modulus vs. temperature for different fiber-filled Victrex PEEK resins.

Figure 10.21 Tensile strength vs. temperature for Victrex PEEK resins [2].

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