【摘要】：針對擠出溫度過高帶來的再生膠性能損失嚴重和污染能耗問題,在擠出脫硫前采用廢機油預(yù)先活化膠粉,以達到既能保證再生膠的脫硫效果,又能適當(dāng)降低反應(yīng)溫度的目的。主要研究膠粉助劑摻拌比例、加工工藝、擠出溫度對膠粉微觀特性和改性瀝青路用性能的影響。研究表明,廢機油活化工藝能顯著提高膠粉的溶膠含量;且膠粉助劑摻拌比例為3∶1時的改性瀝青具有優(yōu)良的路用性能;擠出工藝則主要起到降低膠粉粒徑、改善膠粉在瀝青中的相態(tài)分布的作用。180℃擠出的膠粉改性瀝青高、低溫性能以及可加工性能均表現(xiàn)良好。
[Abstract]:Aiming at the serious performance loss and pollution energy consumption of recycled rubber caused by too high extrusion temperature, the waste oil was used to pre-activate rubber powder before extrusion desulfurization, in order to not only ensure the desulfurization effect of recycled rubber, but also reduce the reaction temperature appropriately. The effects of mixing ratio of rubber powder additives, processing technology and extrusion temperature on the micro-properties of rubber powder and the road performance of modified asphalt were studied. The results show that the activation process of waste oil can significantly improve the sol content of rubber powder, and the modified asphalt with 3: 1 ratio of rubber powder additive has excellent road performance. The extrusion process mainly reduces the particle size of rubber powder and improves the phase distribution of rubber powder in asphalt. The modified asphalt with rubber powder extruded at 180 鈩，

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