Preparation, Properties and Application of Gel Materials for Coal Gangue Control
Preparation, Properties and Application of Gel Materials for Coal Gangue Control
复制标题
煤矸石治理凝胶材料的制备、性能及应用
DOI：
10.3390/en15020557
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发表时间：
2022-01-01
期刊：
影响因子：
3.2
通讯作者：
Pan, Yuanyuan
中科院分区：
文献类型：
--
作者：
Zhang, Xiaoqiang;Pan, Yuanyuan
为解决煤矸石自燃问题，研制了一种胶体泡沫煤矸石灭火材料。采用瓦林混合器法筛选出不同发泡量的发泡剂，并通过自由基聚合法合成了高吸水性泡沫稳定剂。此外，还将该凝胶泡沫用于煤矸石山自燃现场实践。结果表明，当十二烷基磺酸钠和椰油酰胺丙基甜菜碱的质量分数分别为0.6%和4：6时，发泡量可达1500mL。当壳聚糖与丙烯酸的质量比为1：6，中和度为80%，交联剂用量为0.8%，引发剂用量为0.01%时，合成的高吸水性泡沫稳定剂的吸水率可达476毫升/克，并在某自燃煤矸石山进行了测试，1个月内未见复燃现象。
In order to solve the problem of the spontaneous combustion of coal gangue, a coal gangue fire-extinguishing material of gel-foam was developed. The foaming agent was screened by the Waring blender method with varying foam amounts, and the superabsorbent foam stabilizer was synthesized by free radical polymerization. Moreover, the gel-foam was used in a spontaneous combustion of coal gangue mountain field practice. The results showed that when the mass fraction of sodium dodecyl sulfonate and coconut oil amide propyl betaine was 0.6% and 4:6, the foaming amount was as high as 1500 mL. When the mass ratio of chitosan to acrylic acid was 1:6, the neutralization degree was 80%, the cross-linking agent was 0.8%, and the initiator was 0.01%, the water absorption of the synthesized superabsorbent foam stabilizer reached 476 mL/g. The synthesized gel-foam was tested in a spontaneous combustion coal gangue hill in a certain area, and no reburning sign was found within one month.