Modified porous steel slag was obtained by treating steel slag with phosphoric acid and silane coupling agent KH550，and with it partially replaces carbon black and rubber to prepare modified porous steel slag-based rubber composite materials. Composition structure of substances in preparation stage of porous steel slag and modified porous steel slag were characterized and analyzed by fourier transform infrared spectrometer (FT-IR). Mineral composition of substances in different preparation stages were characterized and analyzed by X-ray diffractometer (XRD). Pore structure of porous steel slag was characterized and analyzed by brunauer-emmett-teller surface areas analyzer (BET) so as to preparation mechanism of composite materials was revealed from the micro level. Tensile strength, tear strength and Shore A hardness of composite materials were tested by referring to relative national standards GB/T 528-2009, GB/T 529-2008 and GB/T 531.1-2008. The results indicated that the suitable amount of phosphoric acid can effectively remove most of the f-CaO in the steel slag without damaging the steel slag structure, thus forming porous steel slag with good surface area and pore volume. The silane coupling agent KH550 was adsorbed on the surface of porous steel slag and chemically acted with the hydroxyl group, the surface composition of porous steel slag was changed to improve the surface inorganic properties of modified porous steel slag. The modified porous steel slag and rubber were combined by physical way in composite materials, and the rubber had a good effect on the modified porous steel slag. In the process of vulcanization, the inner rubber was transformed from a linear macromolecule to a three-dimensional network, and the hydration reaction of Ca2SiO4 in the modified porous steel slag formed Ca(OH)2.
Hao ZHANG Yuandi XU Yuan FANG
. Preparation mechanism of modified porous steel slag-based rubber composite materials[J]. The Chinese Journal of Process Engineering, 2019
, 19(2)
: 387
-392
.
DOI: 10.12034/j.issn.1009-606X.218196
[1] Kumar S, Kumar R, Bandopadhyay A, et al. Mechanical Activation of Granulated Blast Furnace Slag and Its Effect on the Properties and Structure of Portland Slag Cement [J]. Cem. Concr. Compos., 2008, 30(8): 679?685.
[2] González J, Albano C, Ichazo M, et al. Effects of Coupling Agents on Mechanical and Morphological Behavior of the PP/HDPE Blend with Two Different CaCO3 [J]. Eur. Polym. J., 2002, 38(12): 2465?2475.
[3] Xiang L, Xiang Y, Wang Z G, et al. Influence of Chemical Additves on the Formation of Super-fine Calcium Carbonate [J]. Powder Technol., 2002, 126(2): 129?133
[4] Bartczak Z, Argon A S, Cohen R E, et al. Toughness Mechanism in Semi-crystalline Polymer Blends: II. High-density Polyethylene Toughened with Calcium Carbonate Filler Particles [J]. Polymer, 1999, 40(9): 2347?2365
[5] Zhuang P, Mcbride M B, Xia H, et al. Health Risk from Heavy Metals via Consumption of Food Crops in the Vicinity of Dabaoshan Mine [J]. Science of the Total Environment, 2009, 407(5): 1551?1561
[6] Saria L, Shimaoka T, Miyawaki K. Leaching of Heavy Metals in Acid Mine Drainage [J]. Waste Manage. Res., 2006, 24(2): 134?140.
[7] Navarro M C, Perez S C, Martinez S M J, et al. Abandoned Mine Sites as a Source of Contamination by Heavy Metals: A Case Study in a Semi-arid Zone [J]. J. Geochem. Explor., 2008, 96(2/3): 183?193
[8] 杨晋涛，范宏，卜志扬，等. 蒙脱土填充补强丁苯橡胶及对橡胶硫化特性的影响 [J]. 复合材料学报, 2005, 22(2): 38?45
Yang J T, Fan H, Bu Z Y, et al. Montmorillonite Reinforced SBR and Effect on the Vulcanization of Rubber [J]. Acta Materiae Compositae Sinica, 2005, 22(2): 38?45.
[9] Raza M A, Westwood A, Brown A, et al. Characterization of Graphite Nano Platets and the Physical Properties of Graphite Nano Platelets/Silicone Composite for Thermal Interface Applications [J]. Carbon, 2011, 49(13): 4269?4279
[10] Chen L, Lu L, Wu D J, et al. Slicone Rubber/Graphite Nanosheet Electrically Conducting Nano Composite with a Low Percolation Threshold [J]. Polym. Compos., 2007, 28(4): 493?498
[11] 顾恒星，李辉，程东波，等. 基于傅里叶红外光谱的钢渣代炭黑环保型复合橡胶的补强机理及性能研究 [J]. 光谱学与光谱分析, 2017, 37(4): 1053?1057
Gu H X, Li H, Cheng D B, et al. Study on Strengthening Mechanism and Performance of Environmental Protection Composite Rubber with Steel Slag Instead of Carbon Black Based on Fourier Transform Infrared Spectroscopy [J]. Spectroscopy and Spectral Analysis, 2017, 37(4): 1053?1057
[12] 张浩，杨刚，龙红明，等. 改性钢渣代炭黑环保型丁苯橡胶的制备及其性能 [J]. 过程工程学报, 2017, 17(6): 1299?1304
Zhang H, Yang G, Long H M, et al. Preparation of Environmentally Friendly Styrene Butadiene Rubber with Modified Steel Slag Instead of Carbon Black and Their Properties [J]. The Chinese Journal of Process Engineering, 2017, 17(6): 1299?1304
