阻燃剂TPSP对棉布阻燃性能和力学性能的影响

The Influence of Tetrahydropyrrole Spirocyclic Phosphoramidate on the Flame Retardancy and Mechanical Property of Cotton Fabrics

摘要:

摘要： 用自主合成的阻燃剂螺环磷酰四氢吡咯酯（TPSP）与水性聚丙烯酸酯胶黏剂复合制成阻燃涂层胶，对棉布进行阻燃整理。通过正交试验得到了较优的阻燃整理条件：阻燃剂与粘合剂的质量比（阻/胶）为1.5:1，棉布与阻燃胶的质量比（布/阻 胶）为60:40，焙烘温度为140℃，焙烘时间为1.5min。此时，棉布的LOI值由未阻燃的18.2%升高到28.9%，阻燃等级达到B1级，断裂强力由未阻燃的364N（经向）和320N（纬向）升高到917N（经向）和472N（纬向）。说明阻燃剂TPSP不但提高了棉布的阻燃性，而且提高了棉布的断裂强力。对优化条件下整理的棉布进行热重分析，结果表明，棉布的初始分解温度由未阻燃的314.5℃降低到287.6℃，降低了26.9℃；600℃时的残留量由未阻燃的0.29%增加到38.87%，增加了38.58%。说明阻燃剂TPSP有效地提高了棉布的成炭性能。

Abstract:

Abstract: Tetrahydropyrrole Spirocyclic Phosphoramidate, a kind of flame retardant synthesized by ourselves, was used in cotton fabrics flame retardant finishing combined with polyacrylate resin adhesive. The flame retardant finishing conditions were optimized by orthogonal design method. It was found that the better finishing conditions are: the ratio of flame retardant and adhesive is 1.5:1(w:w), the ratio of cotton fabric and flame retardant adhesive is 60:40, the cure temperature is 140 ℃ and the cure time is 1.5min. Under the better condition, the LOI of the cotton raises from 18.2% to 28.9%, the flame retardant level reaches B1 level, and the breaking force increases from 364N（warp-wise）and 320N（across warp）to 917N（warp-wise）and 472N（across warp）N, which indicates that TPSP improves not only cotton’s flame retardancy but also the strength. Thermogravimetric Analysis results show that the cotton’s initial decomposition temperature reduces from 314.5℃ to 287.6℃，down 26.9℃ and the residue at 600℃ increases from 0.29% to 38.87%，up 38.58%, which indicates that TPSP improves effectively cotton charred form performance.