"Viscoelastic Properties of Powder Injection Molding Compounds" . "Kitano, Takeshi" . "[3043D673C81E]" . "Viscoelastic behaviour of hard-metal carbide powders dispersed in two different polymeric matrices is studied in a parallel discs rheometer. The first binder (B1) consisted of paraffin wax, polyethylene and ethylene/butyl acrylate copolymer, the second (B2) contained polypropylene, paraffin wax, carnauba wax and stearic acid. Dynamic functions are strongly affected by the concentration of carbide powder (20-55 vol. %), exhibiting yield at high solids loading. Yield values were found to be an exponential function of the powder content. Furthermore, it was found that the viscoelastic parameters of highly concentrated compounds are strain dependent, even when subjected to small strain amplitudes. The B2 lower very effectively both, dynamic viscosity and storage modulus, of the 20 - 50 vol. % carbide powder compounds. Nevertheless, at 55 vol. % the cause of the viscoelastic functions is governed by powder characteristics, regardless of the polymer binder used. A comparison of the dynamic and complex visco"@en . "JOURNAL OF POLYMER MATERIALS" . . "P\u0159edm\u011Btem \u010Dl\u00E1nku je studium viskoelastick\u00E9ho chov\u00E1n\u00ED syst\u00E9m\u016F na b\u00E1zi pr\u00E1\u0161kov\u00E9 plnivo-polymern\u00ED pojivo. Byly pou\u017Eity dva typy pojiva: B1 obsahuj\u00EDc\u00ED parafinov\u00FD vosk, polyetylen, etylen/butyl akryl\u00E1tov\u00FD kopolymer, a B2 skl\u00E1daj\u00EDc\u00ED se z polypropylenu, parafinov\u00E9ho vosku, carnauba vosku a kyseliny stearov\u00E9. Dynamick\u00E9 tokov\u00E9 vlastnosti, m\u011B\u0159en\u00E9 na rota\u010Dn\u00EDm reometru deska-deska, jsou siln\u011B ovlivn\u011Bny koncentrac\u00ED karbidov\u00E9ho pr\u00E1\u0161ku (20-55 vol.%). D\u00E1le bylo zji\u0161t\u011Bno, \u017Ee viskoelastick\u00E9 parametry vysoce koncentrovan\u00FDch sm\u011Bs\u00ED jsou z\u00E1visl\u00E9 na deformaci, a to i pro mal\u00E9 hodnoty amplitud. Srovn\u00E1n\u00ED reologick\u00FDch charakteristik z\u00EDskan\u00FDch p\u0159i m\u011B\u0159en\u00ED v ust\u00E1len\u00E9m a oscila\u010Dn\u00EDm smykov\u00E9m re\u017Eimu potvrdilo relativn\u011B dobrou shodu s Cox-Merz pravidlem."@cs . "1-10" . "S\u00E1ha, Petr" . . "Viskoelastick\u00E9 chov\u00E1n\u00ED PIM materi\u00E1l\u016F"@cs . . . "592495" . . "Viscoelastic Properties of Powder Injection Molding Compounds"@en . "28110" . "Honek, Tom\u00E1\u0161" . "Viscoelastic Properties of Powder Injection Molding Compounds" . "21" . "0970-0838" . "3"^^ . . "RIV/70883521:28110/04:63502475!RIV/2005/MSM/281105/N" . "Viskoelastick\u00E9 chov\u00E1n\u00ED PIM materi\u00E1l\u016F"@cs . . "4"^^ . "Z(MSM 265200015)" . "RIV/70883521:28110/04:63502475" . . "Hausnerov\u00E1, Berenika" . . "1" . . "Viscoelastic Properties of Powder Injection Molding Compounds"@en . . "10"^^ . . . "PIM technology; highly filled polymers; viscoelastic properties; yield; Cox-Merz rule"@en . . "NL - Nizozemsko" . "Viscoelastic behaviour of hard-metal carbide powders dispersed in two different polymeric matrices is studied in a parallel discs rheometer. The first binder (B1) consisted of paraffin wax, polyethylene and ethylene/butyl acrylate copolymer, the second (B2) contained polypropylene, paraffin wax, carnauba wax and stearic acid. Dynamic functions are strongly affected by the concentration of carbide powder (20-55 vol. %), exhibiting yield at high solids loading. Yield values were found to be an exponential function of the powder content. Furthermore, it was found that the viscoelastic parameters of highly concentrated compounds are strain dependent, even when subjected to small strain amplitudes. The B2 lower very effectively both, dynamic viscosity and storage modulus, of the 20 - 50 vol. % carbide powder compounds. Nevertheless, at 55 vol. % the cause of the viscoelastic functions is governed by powder characteristics, regardless of the polymer binder used. A comparison of the dynamic and complex visco" . . . . . .