ISBN-10: 1591249244

ISBN-13: 9781591249245

ISBN-10: 1855734664

ISBN-13: 9781855734661

ANTEC (Annual Technical Conference), subsidized by way of Society of Plastics Engineers, celebrates its 63rd 12 months of excellence in Boston. because the greatest peer-reviewed technical convention to serve the plastics undefined, ANTEC is completely situated to assist the plastics expert in attaining new degrees and private improvement.
• entrance subject
car - 31 colour and visual appeal - 21 adorning and meeting - 34 versatile Packaging - forty four primary boards - FF - Invited audio system basically advertising and administration - 37 clinical Plastics - 36 mould Making and mould layout - 35 New expertise boards - NTF - Invited audio system purely Plastic Pipe & Fittings (SIG021) Plastics Environmental - forty Polymer research - 33 Polymer Modifiers and ingredients - 38 Product layout and improvement - forty-one SIG002 - Failure research and Prevention SIG006 - Thermoplastic Elastomers SIG016 - strategy tracking & regulate SIG018 - Plastics Educators scholars - fifty six - Ungraduate scholars in simple terms Thermoplastic fabrics and Foams - 29 Vinyl Plastics - 27

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Extra info for ANTEC 2005 Plastics: Annual Technical Conference, Volume 3: Special Areas

Sample text

This shows that insufficient lubrication of TPV’s during extrusion is the cause of spot formation. Morphology analysis of several TPVs confirmed that larger, more swollen rubber particles lead to better lubrication. 4 mm Figure 1. 5 mm high gap. (A) Extrudate from slit-die without wetting die-lip with oil 160 120 Spot count Figure 2. Two-phase morphology of a spot on the extrudate surface. 4 mm 40 0 TPV-A TPV-B TPV-B1 TPVBMWD2 Figure 3. Spot count for four TPVs containing different PP’s. (B) Extrudate from slit-die after wetting die-lip with oil Oil draining down app.

At the lowest strain rate, the surface was smooth and glossy. With increasing strain rate, spots or lumps appeared on the surface and the spot count increased progressively with strain rate; so the extent of lubrication is lower at high rates. The frictional force on rubber sliding against a surface arises from adhesion to the surface and from viscous dissipation in the lubricant if present, cf. Roberts [7]. In the absence of lubricant, the friction coefficient increases with sliding speed. When the contact between the rubber and the surface is lubricated with a lubricant layer of fixed viscosity, the friction coefficient decreases with sliding speed.

Tsou and W. Hu, Polymer, 45 3351–3358 (2004). 7. , Rubber Chem. Technol. 65, 673-686 (1990). 8. G. Y. Kang, S. D. Ellul, J. Appl. Polym. Sci, 93, 113-121 (2004). π l⊥ , // ⊥ πc , where, and are the averaged particle aspect ratio in the parallel and perpendicular to flow directions, respectively. The results presented in Table 2 show that the particle size (represented by Vp = πabc) and the aspect ratio (a/c) were largest for TPV-A. The more swollen particles release oil more quickly under pressure and lead to better lubrication than in other TPVs.

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ANTEC 2005 Plastics: Annual Technical Conference, Volume 3: Special Areas

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