羟基淀粉煤炭抑尘剂的制备及性能表征
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摘要
采用羟丙基淀粉醚为主要原料,以N,N-亚甲基双丙烯酰胺作交联剂,过硫酸铵作引发剂,羧乙基纤维素钠作粘度调节剂和成膜剂,得到一种保湿性、抗风蚀性、水稳性、耐温性等性能优良的煤炭抑尘剂。通过实验对比,此种抑尘剂在抗风蚀性、水稳性、耐温性方面比纯淀粉基煤炭抑尘剂的各项指标均优。交联反应虽可形成网络结构,提高产物的保湿抗风蚀等性能,也会降低其粘度,不利于成膜性,因此控制交联反应程度为一关键。最佳的反应条件是温度为70℃左右,时间为1h。
Hydroxypropyl starch is used as the main raw material,N,N-methylene-bis-arcylamide as a cross-linking agent,ammonium persulphate as an intiator,sodium carboxy ethyl cellulose as a viscosity regulator and film-forming agent,a coal dust-depressor with fine moisture,anti-rheumatic,water stability and temperature resistance is gotten.By comparison,the technology indicators of this suppressant are well than pure starch-based coal dust-depressor in some aspects such as anti-rheumatic,water stability and temperature resistance.Cross-linking reaction could form a network structure,and improve product's moisture and the resistance to wind erosion,but it could also reduce product's viscosity,is not conductive to film-forming property,so controlling the degree of cross-linking is critical.Optimum reaction conditions are a temperature of about 70 degrees,and time of 1h.
Hydroxypropyl starch is used as the main raw material,N,N-methylene-bis-arcylamide as a cross-linking agent,ammonium persulphate as an intiator,sodium carboxy ethyl cellulose as a viscosity regulator and film-forming agent,a coal dust-depressor with fine moisture,anti-rheumatic,water stability and temperature resistance is gotten.By comparison,the technology indicators of this suppressant are well than pure starch-based coal dust-depressor in some aspects such as anti-rheumatic,water stability and temperature resistance.Cross-linking reaction could form a network structure,and improve product's moisture and the resistance to wind erosion,but it could also reduce product's viscosity,is not conductive to film-forming property,so controlling the degree of cross-linking is critical.Optimum reaction conditions are a temperature of about 70 degrees,and time of 1h.
引文
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[9]许晋华,朱开金,谭俊华,等.一种高性能煤炭抑尘剂的制备方法:中国,ZL 2012 1 0329645.0[P].2014-06-04.
[2]张雷波,焦娇,赵雪慧,等.生态友好型抑尘剂的制备及性能[J].农业工程学报,2013,29(18):218-223.
[3]王薇,霍茂清,郑向军,等.复合型抑尘剂的制备与应用研究[J].2010,28(zk):176-178.
[4]李伟,朱红,刘凤月.铁路煤炭运输抑尘剂的制备、评价与应用[J].铁道学报,2008,30(4):125-128.
[5]李翔,李长有.淀粉接枝共聚丙烯酸-丙烯酰胺煤炭抑尘剂的合成及应用[J].化学研究,2010,21(1):56-58.
[6]张玉磊,任福民,朱红.铁路煤扬尘抑尘试验研究[J].环境科学与管理,2007,32(12):88-90.
[7]谭卓营,刘文静,赵星光,等.生态型抑尘剂的选择与实验模拟研究[J].环境科学学报,2005,25(5):675-680.
[8]李满,徐海,舒新前.化学抑尘剂在抑制煤尘中的应用探讨[J].中国煤炭,2007,33(8):46-47.
[9]许晋华,朱开金,谭俊华,等.一种高性能煤炭抑尘剂的制备方法:中国,ZL 2012 1 0329645.0[P].2014-06-04.