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| 摘要: |
| 以含磷羟基有机物为主要成分制备了一种非胺类沥青抗剥落剂,并用水煮法、热老化试验和热重分析研究了其有关性能.结果表明,以采用w（LOP）=15%,w（SP）=5%配方配制的抗剥落剂掺入沥青后,可大大提高沥青与酸性石料的粘附性,使沥青与酸性石料的粘附性等级由1～3级提高至5级,并在热老化后仍能保持良好的效果;以单十二烷基磷酸酯和硅胶H为代表,通过红外光谱和溶剂淋洗实验初步探讨了抗剥落剂的作用机理.结果表明,单十二烷基磷酸酯在硅胶H表面上的吸附符合Langmuir吸附等温式,且这种吸附为化学吸附. |
| 关键词: 沥青 抗剥落剂 酸性石料 水煮法 吸附等温式 化学吸附 |
| DOI： |
| 分类号:U416.217 |
| 基金项目:上海市科技发展基金科技攻关项目(022112197) |
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| Preparation and Performance of a Novel Asphalt Antistripping Agent Containing No Amines |
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ZHU Da-zhang SUN Xiao-yu L
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| Abstract: |
| An asphalt antistripping agent without amines was prepared with phosphoric hydroxyl organic compounds as the main component and its performance was evaluated by water boiling method,heat-ageing and thermalgravimetry.The results show that the optimal formula of the antistripping agent is:w(LOP)=15%,w(SP)= 5%,which could improve the adhesion between asphalt and acidic stones greatly.It can increase the adhesion grade from 1~3 to 5 and keep good effect even after heat-ageing.Meanwhile,the functionary mechanism was preliminarily discussed by using FTIR spectroscopy and leaching experiment with monododecyl phosphate and silica H as the representation.It is shown that the adsorption of monododecyl phosphate on the surface of silica H is chemical adsorption and according with Langmuir adsorption isotherm formula. |
| Key words: asphalt,antistripping agent,acidic stone,water boiling method,adsorption isotherm formula,chemical adsorption |
