An automatic rubber powder plasticizing process and...

Details An automatic rubber powder plasticizing process and... An automatic rubber powder plasticizing process and...

C - Chemistry, Metallurgy

08

J

C08J 11/10 (2006.01) C08L 21/00 (2006.01)

Patent

CA 2747572

An automatic rubber powder plasticizing method which is used for recovery, processing and utilization of waste rubber, comprising the following steps: smash the waste rubber to powder in 10 meshes to 40 meshes, add some activator and softer according to certain weight ratio of rubber powder: activator : softener = 1: 0.3~0.4%:8~18%,, evenly mix them, and then heat the mixture to 180~320~ and hold for 8~15 min; afterwards, carry out desulfurization and plasticizing, then the plasticized rubber powder is obtained after cooling the resultant mixture. The invention also provides an apparatus for plasticizing which comprises a stirring unit (1), a feeding unit (2), a thermal reaction unit (3) and a cooling unit (4).

La présente invention concerne un procédé automatique de plastification de poudre de caoutchouc utilisé dans la récupération et l'utilisation de déchets de caoutchouc, qui consiste à pulvériser les déchets de caoutchouc pour former une poudre de caoutchouc de 10-40 mesh, ajouter un activateur et un plastifiant dans un rapport pondéral poudre de caoutchouc/activateur/plastifiant de 1 % : 0,3-0,4 % : 8-18 %, mélanger uniformément, chauffer à 180-320 °C et maintenir cette température pendant 8-15 minutes pour désulfuriser et plastifier le caoutchouc, afin d'obtenir après refroidissement une poudre de caoutchouc plastifié. L'invention concerne également un équipement de plastification qui comprend un dispositif d'agitation (1), un dispositif d'alimentation (2), un dispositif de réaction thermique (3) et un dispositif de refroidissement (4) reliés en séquence.

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