Rudolf Žitný, Ústav procesní a zpracovatelské techniky ČVUT FS 2010 This course is approximately at this level CHEMISTRY E182019 CH11 POLYMERS.

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Rudolf Žitný, Ústav procesní a zpracovatelské techniky ČVUT FS 2010 This course is approximately at this level CHEMISTRY E CH11 POLYMERS

CH11 Breaking double bond in monomer (alkene)

POLYMERS CH11 Generalised formula of polyolefines

POLYMERS CH11 Generalised formula of polyamides

POLYMERS CH11 Generalised formula of rubbers

POLYMERS CH11 Generalised formula of rubbers N=... H H H H H C C C C Cl N=... H H H H H C C C C H polychloroprene butadiene

POLYMERS CH11 Thermoplastic - an organic substance which is formable or pliable at higher temperatures (thermoplasts can be repeatedly melted without any change to the polymer molecules). Thermoset - an organic substance which is irreversibly hardened, "cured" at a high temperature (thermosets are not fully polymerised in their raw state).

POLYMERS CH11 Properties Solid Structure AmorphousCrystalline Polymer polystyrene, polycarbonate, acrylic, polysulfone, ABS, SAN Polyethylene, propylene, polyesthers, nylon, acetals Chemical resistance atacked by organic solvents resistant to most solvents Wear high friction and wearlow friction and wear Optical properties transparentopaque, refract light rays

POLYMERS processing CH11 Disc extruder

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