Prodn. of powder from rubber or vulcanisate

Prodn. of powder from rubber or vulcanisate

A powder is made from rubber or vulcanised rubber by compressing the material under 0.2-0.7 MPa, pulverising the compressed material under a pressure of 0.2-50 MPa and shear force 0.03-5 N/sq.mm, while heating to 80-250 deg.C, and then cooling to 15-60 deg.C. Pref. heating or cooling cycle may be re...

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Hauptverfasser: MARKARIAN KHRISTOFOR ARUTJUNOVICH, NEGMATOV SAIBDZHAN SADYKOVICH, MATKARIMOV SULEIMAN KHAITBAEVICH, SHERSTNEV PAVEL PETROVICH, POLIVANOV JURY ANATOLIEVICH, FILMAKOVA LIDIA ALEXANDROVNA, NEPOMNYASCHY ANATOLY ISAAKOVICH, ENIKOLOPOV NIKOLAI SERGEEVICH, AKOPIAN ELENA LEONIDOVNA, PAVLOV VILITARY BORISOVICH, KRASNOKUTSKY VALENTIN PAVLOVICH, KURAKIN LEONID IVANOVICH
Format: Patent
Sprache:eng ; ita
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Zusammenfassung:A powder is made from rubber or vulcanised rubber by compressing the material under 0.2-0.7 MPa, pulverising the compressed material under a pressure of 0.2-50 MPa and shear force 0.03-5 N/sq.mm, while heating to 80-250 deg.C, and then cooling to 15-60 deg.C. Pref. heating or cooling cycle may be repeated. Polyethylene, 0.5-20 wt.%, is added to the source material. The process may be carried out continuously in a single- or multi-screw extruder.