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Phenolic—asbestos

One of the interesting properties of PBPCP [187] was its fast heat dissipation characteristics and so it was tested by the well-known oxy-acetylene panel test (ASTM 285-70) for ablative materials. Figure 13 shows the survival of a flower for 100 s. kept on the 6.35-mm asbestos fiber-reinforced hexamine-cured panel. The ablation rate value of this material was 3.2 x 10 in/s in comparison with 3.6 x 10 in/s for asbestos-phenolic. As the char content of PBPCP was only 27% compared with 60% for conventional phenolics, mechanisms involving transpiration processes rather than heat blocking by char formation might be playing a greater role in this case [188]. [Pg.428]

Calcium monocarbonate Gilsonite Polyimide, thermoplastic Urea-formaldehyde resin insulation material, noise Asbestos Phenolic resin insulation material, thermal Asbestos Phenolic resin insulation mfg., electric cables/wires 1-Chloronaphthalene insulation moldings, high-temp./elec. Polysulfone resin... [Pg.5385]

Tempersture. An increase in temperature produces a marked decrease in the volume resistance of plastic. Measurements above 10 S2 cm and 200°C are difficult even with excellent equipment, and in such cases the values are open to question. The marked difference between materials is apparent. The volume resistivity of PTFE decreases only slightly, even as it approaches its crystalline melting temperature of 327°C, whereas PE shows a marked reduction in resistivity as its crystalline melting temperature is approached. Cross-linked polyethylene shows a similar but less pronounced reduction. An asbestos phenolic resin may have a relatively low resistance at room temperature, but the decrease with temperature is not as pronounced as for a polyamide resin, which may show an influence of absorbed moisture. It is apparent that the room temperature resistance values commonly given in the manufacturer s data sheets, are of little value for design purposes. [Pg.330]

Phenolic asbestos, general-purpose polyester glass, Saran, and CAB are adversely affected by alkalies. And thermoplastics generally show poor resistance to organics. [Pg.2461]

Poly- propylene poly- ethylene CAB" ABSf PVC Saran Polyester glass 1 Epoxy glass phenolic asbestos Fluoro- carbons Chlorinated polyether (Penton) Poly- carbonate... [Pg.2463]

Alkylphenols, ammonia, asbestos, chlorinated paraffins, 4-chloroaniline, cyanide, detergents, di- -butyl phthalate, polyaromatic hydrocarbons (PAHs e.g. anthracene, benzopyrene, methylcholanthrene, /i-naphthoflavone), nitrate, nitrite, petroleum oil, phenol, pentachlorophenol, 4-nitrophenol, dinitro-o-cresol, polychlorinated biphenyls (PCBs especially coplanar), polychlorinated dioxins, polybrominated naphthalenes, /i-sitosterol, sulfide, thiourea, urea, acid water, coal dust... [Pg.45]

There are now commercially available a large range of laminated plastics materials. Resins used include the phenolics, the aminoplastics, polyesters, epoxies, silicones and the furane resins, whilst reinforcements may be of paper, cotton fibre, other organic fibres, asbestos, carbon fibre or glass fibre. Of these the phenolics were the first to achieve commercial significance and they are still of considerable importance. [Pg.654]

Industrial grade materials employ fillers such as asbestos, silica and glass fibre. These are incorporated by dry-blending methods similar to those used with woodflour-filled phenolic compositions. [Pg.684]

Many additives are used with phenolic resins such as wood flour, oils, asbestos, and fiberglass. Fiberglass piping made with phenolic resins can operate at 150°C and pressure up to 150 psi. ... [Pg.348]

Vanes are usually asbestos or cotton cloth impregnated with a phenolic resin. Bronze or aluminum also may be... [Pg.559]

Phenol-formaldehyde (phenolic) plastics The chemical resistance is affected by the phenol used, cresols giving the best acid resistance whilst xylenols are often used to obtain the best alkali resistance. For chemical-resistant applications the fillers used in moulding powder and reinforcing material in laminates should be inorganic, e.g. asbestos or glass. The resins are usually dark in colour. [Pg.934]

Mercury, lead, and cadmium can attack the central nervous system carbon tetrachloride and chlorinated phenols can destroy the liver ethylene glycol and cadmium sulfate produce kidney disease asbestos and beryllium lead to lung disorders and lead poisoning can cause mental retardation. [Pg.90]


See other pages where Phenolic—asbestos is mentioned: [Pg.1004]    [Pg.827]    [Pg.1008]    [Pg.4923]    [Pg.1018]    [Pg.67]    [Pg.8]    [Pg.1004]    [Pg.827]    [Pg.1008]    [Pg.4923]    [Pg.1018]    [Pg.67]    [Pg.8]    [Pg.599]    [Pg.669]    [Pg.678]    [Pg.784]    [Pg.964]    [Pg.337]    [Pg.1005]    [Pg.2458]    [Pg.128]    [Pg.655]    [Pg.658]    [Pg.665]    [Pg.847]    [Pg.183]    [Pg.210]    [Pg.542]    [Pg.489]    [Pg.386]    [Pg.387]    [Pg.388]    [Pg.432]    [Pg.383]    [Pg.599]    [Pg.669]    [Pg.678]    [Pg.784]    [Pg.964]    [Pg.197]    [Pg.142]    [Pg.598]    [Pg.126]   
See also in sourсe #XX -- [ Pg.8 ]




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