软膜型煤炭阻燃抑尘剂的微波合成及其应用

以环氧树脂E-51、丙烯酸丁酯(BA)、甲基丙烯酸(MAA)、苯乙烯(St)、植酸等为原料,K2S2O8和Na HSO3为引发剂,烷基酚醚磺基琥珀酸酯钠(MS-1)和辛基酚聚氧乙烯醚(OP-10)为乳化剂,在微波辅助下,合成了一种高分子阻燃抑尘剂乳液。采用FTIR、SEM、TGA等对产品进行了结构表征和应用性能测试。结果表明,在m(BA)∶m(St)=2∶1,引发剂用量为0.6%(以单体的总质量为基准,下同),乳化剂用量为6%,m(MS-1)∶m(OP-10)=2∶3,E-51用量为6%,植酸用量为2%,微波功率100 W,微波辐射时间90 min条件下,所合成的乳液稳定,粒径分布均匀,成膜柔软。喷洒阻燃抑尘剂的煤样相较于喷洒水的煤样的失水率、风蚀损失率、振荡损失率、CO质量浓度分别减小了47.7%、96.6%、96.0%、67.5%。

Microwave synthesis and application of soft film flame retardant dust suppressant for coal

Under the microwave, a kind of polymer flame retardant dust suppressant was synthesized by using epoxy resin (E-51), butyl acrylate (BA), methacrylic acid (MAA), styrene (St), phytic acid as raw materials, K2S2O8 and NaHSO3 as initiator, alkyl phenol ether sulfosuccinate (MS-1) and octylphenol polyoxyethylene ether (OP-10) as emulsifier. Structural characterization and performance tests were carried out by FTIR, SEM, TGA, etc. The results show that when m(BA) : m(St) = 2 : 1, the amount of the initiator was 0.6% (based on the total mass of monomers, the same below), the amount of the emulsifier was 6%, m(MS-1) : m(OP-10) = 2 : 3, the amount of the E-51 was 6%, the amount of the phytic acid was 2%, the microwave power was 100 W, the microwave irradiation time was 90 min. The synthesized emulsion was stable, the particle size distribution was uniform, and the film formation was soft. The coal sample sprayed with flame retardant dust suppressant was compared with the coal sample sprayed with water. The water loss rate, wind erosion loss rate, shock loss rate and CO concentration decreased by 34.5%, 33.6%, 33.2% and 67%, respectively.