Page 110 - 《橡塑技术与装备》2025年12期

橡塑技术与装备
HINA R&P TECHNOLOGY AND EQUIPMENT

脱硫过程会使橡胶的交联密度降低，随着 CR 脱硫程 出现孔洞和缝隙，DCR 内部交联网络遭到破坏。
度加深，制备的 DCR 交联密度不断减小。交联密度大 （2）随脱硫温度、转速的升高，胶粉改性沥青
的橡胶在沥青中能够更好地保持其弹性结构，对沥青 （CMA）的延度、针入度升高，但软化点，弹性恢复降低，
弹性恢复的贡献更大 ；交联密度降低后，橡胶相的弹 综合性能得到改善。脱硫橡胶具有极高的环保性，并
性减弱，导致沥青整体的弹性恢复能力下降。硫化胶 且具有极高的经济性。
粉的交联密度与其溶胀能力密切相关，交联密度越大，
其在沥青中吸收轻组分的能力越强。随着胶粉脱硫程 参考文献 ：
[1] 刘学擎 . 关于废旧轮胎的处理及综合利用研究 [J]. 中国轮胎资
度加深，其在沥青中吸收轻组分的能力变弱。沥青中
源综合利用 . 2025(01):55-57.
的轻组分对橡胶相的溶胀作用减弱，橡胶相不能充分 [2] 王仕峰，姚鸿儒，张宏雷，等 . 螺杆反应挤出脱硫橡
溶胀，无法更好地发挥其弹性性能，进而影响沥青的 胶技术的研究与应用进展 [J]. 中国轮胎资源综合利用，
2015,215(05):43-48.
弹性恢复。脱硫反应使得橡胶分子链发生解交联，形
[3] Juan Xie, Xucheng Zhao, Yongnan Liu, et al. Microbial
成更多的可溶性分子，溶胶含量升高。这些分子链的 treatment of waste crumb rubber: Reducing ener gy
结构和性能发生变化，弹性不如交联状态下的橡胶分 c on sum pt i on a nd ha rm fu l e m i ssi on s d uri n g a sp ha l t
子链，在受到外力作用后，难以像未脱硫或脱硫程度 production process [J]. Journal of Cleaner Production, 2024,
464:142 778.
低的胶粉那样有效地恢复到原来的状态，从而使沥青
[4] 向丽 , 废橡胶粉 /SBS 复合改性沥青的机理和性能研究 [D]. 中
的弹性恢复性能降低。 国石油大学 2011.
[5] Pan Song, Xiaoyu Wu, Shifeng Wang. Effect of styrene
butadiene rubber on the light pyrolysis of the natural rubber
3 结论 [J]. Polymer Degradation and Stability, 2018, 147:168-176.
（1）使用双螺杆剪切脱硫工艺制备脱硫橡胶，随 [6] Xiaoyu Wu, Krzysztof Formela, Raqiqa tur Rasool, et al.,
着脱硫温度、转速、脱硫剂含量的升高，溶胶含量升高， Evaluation of structural change during fast transformation
process of cross-linked NR into liquid NR by light pyrolysis
交联密度降低。DCR 中松散的颗粒消失，表面黏连且
[J]. Polymer Degradation and Stability, 2017, 136:48-57.

The impact of hexadecylamine on the desulfurization degree of
waste rubber and the application of rubber asphalt

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Jin Yushi , He Hongwei *, Ma Jie , Cui Chen , Zhang Bo 2
(1. Taiyuan University of Technology, Taiyuan 030024, Shanxi, China;
2. Shanxi Transportation Science and Technology Research and Development Co. LTD., Taiyuan 030032,
Shanxi, China)
Abstract: With the rapid development of the transportation industry, the production of waste rubber
(CR) has been increasing year by year. However, there is currently a lack of environmentally friendly and
efficient recycling methods. Due to the inert surface and internal three-dimensional network structure of CR,
the recycling and reuse process is hindered. Therefore, the desulfurization of CR through de-crosslinking has
become a highly promising research direction. This article employs a Haake internal mixer to blend waste
rubber powder with a desulfurizing agent (HDA) to investigate the effects of different process parameters
and HDA on the desulfurization efficiency of rubber powder. By analyzing the influence of different mixing
temperatures, speeds, and desulfurizing agent contents on the degree of chloroprene rubber (CR)
desulfurization through sol content, Horikx curve, and scanning electron microscopy (SEM), and applying it to
modified asphalt, good results have been achieved.
Key words: hexadecylamine; rubber powder desulfurization; rubber powder modified asphalt
(R-03)

·58· 第 51 卷 第 12 期