主管：中华人民共和国应急管理部
主办：应急管理部天津消防研究所
ISSN 1009-0029  CN 12-1311/TU
消防科学与技术

消防科学与技术 ›› 2021, Vol. 40 ›› Issue (7): 1068-1071.

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氢氧化铝阻燃剂粒径对沥青性能的影响

黄亚东1，林铖航2，姜浩嘉2，吴珂3，朱凯2   

  1. 1. 浙江省消防救援总队，浙江杭州310005；2. 中国计量大学质量与安全工程学院，浙江杭州310018；3. 浙江大学建筑工程学院，浙江杭州310058
  • 出版日期:2021-07-15 发布日期:2021-07-15
  • 通讯作者: 朱凯（1988-），男，江苏苏州人，中国计量大学质量与安全工程学院副教授，博士。
  • 作者简介:黄亚东（1979-），男，浙江新昌人，浙江省消防救援总队火调技术处副处长，高级工程师，博士，主要从事消防安全及火灾理论研究，浙江省杭州市文晖路319号，310014。

Effect of particle size of aluminium hydroxide flame retardant on properties of asphalt

HUANG Ya-dong1, LIN Cheng-hang2, JIANG Hao-jia2, WU Ke3, ZHU Kai2   

  1. 1. Zhejiang General Fire and Rescue Brigade, Zhejiang Hangzhou 310014,China; 2. School of Quality and Safety Engineering, China Jiliang University, Zhejiang Hangzhou 310018, China; 3. School of Civil Engineering and Architecture, Zhejiang University, Zhejiang Hangzhou 310058, China
  • Online:2021-07-15 Published:2021-07-15

摘要： 采用1、6.5、25、45 μm 4 种粒径的氢氧化铝（ATH）制备改性沥青，通过氧指数和热重分析试验研究ATH 粒径对沥青阻燃效果和热氧化分解温区的影响，结合针入度和软化点试验研究ATH 粒径对沥青基本性能指标的影响。结果表明：在阻燃剂掺量为25%时，在1～45 μm 范围内，ATH 的粒径越大，沥青的阻燃效果越好，其中45 μmATH 改性沥青的阻燃效果最好，可将沥青的氧指数值提升至28.5%；热重分析结果表明，1 μmATH 和45 μmATH 都将沥青的各阶段热氧化分解温区提前，且1 μmATH 改性沥青的第一个失重峰速率明显大于45 μmATH 改性沥青。同时，沥青针入度值随ATH 粒径的增大呈下降趋势，软化点则无明显规律。

关键词: 氢氧化铝, 粒径, 沥青, 氧指数, 热重分析

Abstract: The modified asphalt was prepared by using aluminum hydroxide (ATH) with four particle sizes of 1 μm, 6.5 μm, 25 μm, and 45 μm.The influence of ATH particle size on the flame retardant effect and thermal oxidation decomposition temperature zone of asphalt is studied by limiting oxygen index and thermogravimetric analysis. The penetration and softening point tests are used to study the influence of ATH particle size on the basic performance indexes of asphalt. The results show that when the flame retardant content is 25%, in the range of 1~45 μm, the larger the particle size of ATH, the better the flame retardant effect of the asphalt. Among them, the 45 μmATH modified asphalt has the best flame retardant effect. The oxygen index value of asphalt can be increased to 28.5%; Thermogravimetric analysis results show that both 1 μmATH and 45 μmATH advance the thermal oxidation decomposition temperature zone of each stage of asphalt, and the first weight loss peak rate of 1 μmATH modified asphalt is obviously greater than 45 μmATH modified asphalt. At the same time, the penetration value of asphalt shows a downward trend with the increase of ATH particle size, and there is no obvious law of softening point.

Key words: aluminum hydroxide, particle size, asphalt, oxygen index, thermogravimetric analysis