酯化半乳甘露聚糖与Mg(OH)_(2)、Sb_(2)O_(3)混配抄造增强阻燃纸  

Esterified Galactomannan Mixed with Mg(OH)_(2) and Sb_(2)O_(3) for Making Reinforced Flame-retardant Paper

作　　者：毕圣君 宋先亮[1,2] BI Shengjun;SONG Xianliang(Engineering Research Center of forestry biomass materials and Energy Ministry of Education,Beijing Forestry University,Beijing 100083,China;Beijing Key Laboratory of forest biomass chemistry,Beijing Forestry University,Beijing 100083,China)

机构地区：[1]北京林业大学林业生物质材料与能源教育部工程研究中心,北京100083 [2]北京林业大学林木生物质化学北京市重点实验室,北京100083

出　　处：《林产化学与工业》2022年第3期97-104,共8页Chemistry and Industry of Forest Products

基　　金：国家重点研发计划资助项目(2016YFD0600803)。

摘　　要：以丁烷四羧酸制得的酯化半乳甘露聚糖(EGM)为纸张增强剂,Sb_(2)O_(3)和Mg(OH)_(2)为阻燃剂,研究其复配方式对阻燃纸物理性能和阻燃性的影响。研究结果表明:添加EGM能提高阻燃纸的抗张指数、耐破指数、耐折度,控制Sb_(2)O_(3)用量为15%,当添加1.5%EGM和15%Mg(OH)_(2)时,阻燃纸的抗张指数达到56.2 N·m/g,耐破指数达到了3.37 kPa·m^(2)/g,耐折度达46次,相比未添加EGM的阻燃纸分别增加了14.7%、12.0%和119.0%。当Sb_(2)O_(3)用量为15%、Mg(OH)_(2)为25%时,纸张的阻燃效果达到最佳,阻燃纸的炭化长度为16.8 mm,续燃时间为0.43 s,灼燃时间为25.96 s。扫描电镜及能谱分析表明:Mg(OH)_(2)和Sb_(2)O_(3)成功附着在纸张纤维中,且EGM的添加增强了Mg(OH)_(2)和Sb_(2)O_(3)在纸张表面的留着率,增强了纸张纤维之间的黏合力。TGA分析表明:添加Sb_(2)O_(3)与Mg(OH)_(2)使纸张的初始分解温度提高,在600℃的残炭量由对照样的0.34%提高到了15%。In this paper,butane tetracarboxylic acid esterified galactomannan(EGM)was used as paper strengthening agent.Equally,antimony trioxide and magnesium hydroxide were used as flame retardants.Then,the effects of their compounding methods on the strength and flame retardancy of flame retardant paper were studied.The results showed that the addition of EGM could improve the tensile index,bursting index and folding resistance of flame retardant paper.When 1.5%EGM and 15%magnesium hydroxide were added,the tensile index of flame retardant paper reached 56.2 N·m/g,the bursting index reached 3.37 kPa·m^(2)/g,and the folding resistance reached 46 times,respectively.Notably,compared with the flame retardant paper without EGM,tensile index,burst index and folding endurance increased by 14.7%,12.0%and 119.0%,respectively.Particularly,when the addition amount of antimony trioxide was 15%,the addition of magnesium hydroxide was 25%,the flame retardant effect of the paper reached the best,namely,the carbonization length of the flame retardant paper was 16.8 mm,the continuous burning time was 0.43 s,and the ignition time was 25.96 s.SEM and EDS analysis showed that magnesium hydroxide and antimony trioxide were successfully attached to the paper fiber.The addition of EGM enhanced the retention of magnesium hydroxide and antimony trioxide on the paper surface and the adhesion between paper fibers.TG curves showed that the addition of antimony trioxide and magnesium hydroxide increased the initial decomposition temperature of the paper,and the amount of carbon formed at 600℃increased from 0.34%of the control to 15%.

关 键 词：半乳甘露聚糖 酯化 阻燃 纸张 

分 类 号：TQ35[化学工程]