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Preparation and Properties of High Viscosity Modified Asphalt

机译：高粘度改性沥青的制备与性能

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High viscosity modified (HVM) asphalt was prepared by the addition of styrene-butadiene-styrene (SBS), plasticizer, crosslinker. The effect and proportion of each modifier in the preparation of HVM asphalt were studied. SBS was the major modifier and determined the basic properties of HVM asphalt. Plasticizer (furfural exact oil) and crosslinker (sulfur) as additional modifiers were necessary in improving the workability, stability, and aging resistance of modifier. The effect of aging and additional modifiers on the structure and rheological behavior of SBS modified (SM) asphalt was displayed by adopting various rheological tests. Plasticizer declined the rutting resistance of SM asphalt and increased the viscous behavior of SM asphalt after aging. The use of crosslinker led to the formation of polymer network and improved the aging resistance of SM asphalt. The morphology observation shows crosslinker led to the formation of polymer network and improved the compatibility between SBS and asphalt. Plasticizer prompted the swelling and dispersion of SBS in asphalt and improved the effect of crosslinker further. Aging destroyed the polymer phase seriously and there was still residual polymer phase in asphalt. (C) 2015 Society of Plastics Engineers
机译：通过加入苯乙烯 - 丁二烯 - 苯乙烯（SBS），增塑剂，交联剂制备高粘度改性（HVM）沥青。研究了每种改性剂在制备HVM沥青中的效果和比例。 SBS是主要改性剂，并确定HVM沥青的基本性质。在提高改性剂的可加工性，稳定性和老化性方面是必需的增塑剂（糠醛精确油）和交联剂（硫）。通过采用各种流变检验，展示老化和额外改性剂对SBS改性（SM）沥青的结构和流变行为的影响。增塑剂下调了SM沥青的抵抗力，并在老化后增加了SM沥青的粘性行为。交联剂的使用导致聚合物网络的形成，提高了SM沥青的老化抗性。形态学观察显示交联剂导致聚合物网络的形成，改善了SBS和沥青之间的相容性。增塑剂促使SBS在沥青中溶胀和分散，进一步提高交联剂的作用。老化严重破坏了聚合物相，沥青中仍然存在残留的聚合物相。 （c）2015年塑料工程师协会

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