石油炼制与化工 ›› 2017, Vol. 48 ›› Issue (9): 46-48.

• 基础研究 • 上一篇    下一篇

中海油改性沥青针入度与PG高温等级关系的研究

李佰昌,邓文广,王涵,张斌,郭娜   

  1.  中海沥青股份有限公司
  • 收稿日期:2017-03-06 修回日期:2017-04-07 出版日期:2017-09-12 发布日期:2017-08-25
  • 通讯作者: 李佰昌 E-mail:libaichang09@163.com
  • 基金资助:
     

RELATIONSHIP BETWEEN PENETRATION GRADE AND HIGH TEMPERATURE PG GRADE OF CNOOC MODIFIED ASPHALT

    

  1.  
  • Received:2017-03-06 Revised:2017-04-07 Online:2017-09-12 Published:2017-08-25
  • Supported by:
     

摘要: 选取利用中海油36-1沥青制备的4种常用的中海油SBS改性沥青,分别进行针入度分级实验和多个温度下的动态剪切试验,测试沥青的25 ℃针入度、延度、软化点及其PG高温指标。在综合分析试验结果的基础上,提出了中海油改性沥青的针入度等级和PG高温等级之间的关系。二者相关系数达0.99以上,PG等级达到76 ℃时,25 ℃针入度应不大于66.5;PG等级达到82 ℃时,25 ℃针入度应不大于63.0。利用针入度能够较好地预估PG高温等级,为生产提供指导。

关键词: 改性沥青, 针入度, PG分级, 中海油

Abstract: Four kinds of commonly used CNOOC SBS modified asphalt were prepared from CNOOC 36-1 asphalt. The penetration at 25℃,ductility, softing point and PG high temperature parameters of the 4 samples were investigated by conventional penetration tests and DSR tests under multi-temperature conditions. Based on the test results, a relationship between penetration grade and performance high temperature grade PG was established. The correlation coefficient of the relational is >0.99. When PG level reaches 76 ℃, the 25 ℃ penetration result should not exceed 66.5; When PG level reaches 82 ℃, the 25 ℃ penetration should not exceed 63.0. The PG high temperature levels can well be estimated according to the penetration grade.

Key words: modified asphalt, penetration, PG grade, CNOOC

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