Preparation of linear piperazine/phosphorous/polysiloxane copolymer and its application on cotton fabrics
Preparation of linear piperazine/phosphorous/polysiloxane copolymer and its application on cotton fabrics
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DOI：
10.1007/s10973-017-6541-8
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发表时间：
2017-12-01
影响因子：
4.4
通讯作者：
Lu, Zhou
中科院分区：
文献类型：
--
作者：
Chen, Zhaohua;Dong, Chaohong;Lu, Zhou
制备了一种新型阻燃剂α,Ω-二[(4-丁氧基-哌嗪-1-基)-次膦酸甲醚]封端的线性聚硅氧烷。分别通过极限氧指数、垂直燃烧试验、水平燃烧试验、热重分析和锥形量热仪系统评价了织物的可燃性和热分解行为。事实证明，阻燃剂对织物的燃烧性能有很大影响。结果，极限氧指数值从18%提高到30%，着火时间也增加。总放热量、放热速率和质量损失值均下降。这也可以通过点火时间/相对峰值比的增加和CO2/CO比的降低来证实。通过扫描电子显微镜对残留物的形貌进行研究，结果表明阻燃剂形成可膨胀的炭层，对织物的降解起到保护作用。采用傅里叶变换红外光谱研究了织物残留物的化学结构，结果表明，处理后的织物通过促进织物碳化，形成碳硅层而表现出更好的阻燃性能。另外，通过水洗耐久性测试，经过25次洗涤后，处理过的织物的极限氧指数值仍保持在26.3%，而未处理过的织物为18.0%，这意味着经过处理的织物具有更好的耐久性阻燃效果。还研究了撕裂强度、拉伸强度和折皱回复角，以分析阻燃剂对未处理织物的影响。
A novel flame retardant alpha, omega-di[(4-butoxy-piperazin-1-yl)-phosphinic acid methyl ether]-terminated linear polysiloxane was prepared. The flammability and thermal decomposition behaviors of fabrics were systematically estimated by limiting oxygen index, vertical burning test, horizontal flame test, thermogravimetric analysis and cone calorimeter, respectively. The combustion performances of fabrics have proven to be intensely affected by flame retardant. As a result, the value of limiting oxygen index enhanced from 18 to 30%, and the ignition time increased too. The values of total heat release, heat release rate and mass loss decreased. This also can be confirmed by the increase in ignition time/the relative peak ratio and the decrease in CO2/CO ratio. The morphologies of the residues were investigated by scanning electron microscopy, and it showed that flame retardant formed an expandable char layer to play a protective role in the degradation of fabrics. The chemical structure of residue of fabric was studied by Fourier transform infrared, and the result demonstrated that the treated fabric showed better flam retardant property by promoting the carbonization of fabric, forming the carbonaceous-siliceous layer. In addition, through the wash durability test, the value of limiting oxygen index of the treated fabric remained at 26.3% after 25 times washing, while the one of the untreated fabrics was 18.0%, which meant a better durability flame-retarding effect of the treated one. The tearing strength, tensile strength and wrinkle recovery angle were also investigated to analyze the effects of the flame retardant on untreated fabric.