Study On Powder Modification And Blending With CPE

Waste rubber recycling reuse is one of the main way of manufacturing powder, it can be mixed with the recycled rubber products. But because rubber powder is vulcanized particles, the ability of surface molecular activity is very poor, and activity of Surface is not high, when adding to the rubber can cause performance degradation, so modifying rubber powder is necessary. This article focus on powder modification technology and method, and blending properties with chlorinated polyethylene.Firstly, we modified waste tire powder with the method of mechanical modification by HAAKE Poly Lab QC. Then mechanical properties were tested with Powder appraisal formula. The result shows modified effect is different under different process conditions of Mechanical modification, and the best modified condition: T120℃, rotate speed60r/min, modification time5min, Even more, the SEM picyures taken in broken surface of tensile samples, Modified rubber powder is better integrated with the matrix under the condition of the optimal modification condition, the gap of around of powder particles is small.The effect of HAAKE was better, the effect of using HAAKE PolyLab QC was better when Adding peptizer RP-66or9023/WQ The mechanical properties of vulcanizate increased obviously, and the effect of peptizer9023/WG was better than RP-66.Plasticizing effect of powder descend when the temperature rised.In order to further improve the mechanical modification and the effect of chemical modified rubber powder, and use of natural latex modified rubber powder in this paper. The results show this method can can further optimize the effect of modification, The Mechanical property of vulcanized rubber has improved, especially tearing strength.This study focus on blending rubber powder with CPE. Firstly, we study the plasticate features of CPE in the mixer and mixing mill; in order to improve the compatibility of rubber powder and CPE, blending modified rubber powder with CPE, and joining the CR as compatilizer improve the compatibility of rubber powder and CPE. The result show that the best processing technology of CPE in mixer: temperature130-145℃, processing time2-6min, fill factor90-94%; and the best processing technology of CPE in open mill:temperature80-90℃, time4-8min. With the increasing of the content of powder in CPE/powder, the property decline. Performing at150℃, Compared with the blend of adding non-modified rubber powder, The Mechanical property of adding modified rubber powder or CR rised, The ingression of Tg is bigger.