| 乙酸木质素基聚氨酯硬泡的制备与性能 |
| |
| 引用本文： | 李燕,敖日格勒,韩雁明. 乙酸木质素基聚氨酯硬泡的制备与性能[J]. 林业科学, 2011, 47(7) |
| |
| 作者姓名： | 李燕 敖日格勒 韩雁明 |
| |
| 作者单位： | 1. 中国林业科学研究院木材工业研究所 北京100091
2. 华南理工大学制浆造纸工程国家重点实验室 广州510640 |
| |
| 基金项目： | 国家自然科学基金(NSFC31000274); 中央级公益性科研院所基本科研业务费专项资金(CAFINT2009K06)资助项目 |
| |
| 摘 要： | 将乙酸制浆法废液中的木质素进行提取和精制,采用红外光谱(FTIR)、31P-NMR谱和凝胶渗透色谱(GPC)对其结构进行表征,并利用乙酸木质素、聚醚多元醇和甲苯二异氰酸酯在发泡剂和催化剂的条件下合成聚氨酯硬泡。采用TG、DSC和压缩测试对聚氨酯硬泡的热学和力学性能进行研究,并用扫描电子显微镜观察聚氨酯硬泡的泡孔结构。结果表明:乙酸木质素作为多羟基聚合物,可以部分代替聚醚多元醇和异氰酸酯发生反应制备聚氨酯材料;当乙酸木质素添加量为5%时,聚氨酯硬泡的压缩强度达到1.325MPa,比未添加木质素的泡沫高出约63%,此时的压缩模量也达到0.181MPa;随着乙酸木质素添加量增加,乙酸木质素基聚氨酯硬泡的最快分解温度下降,而玻璃化转变温度没有明显升高;乙酸木质素基聚氨酯硬泡泡孔平整均匀。
|
| 关 键 词： | 乙酸制浆法 乙酸木质素 聚氨酯硬泡 |
Synthesis and Characterization of Polyurethane foam from Acetic Acid Lignin |
| |
| Li Yan,Aori Gele,Han Yanming. Synthesis and Characterization of Polyurethane foam from Acetic Acid Lignin[J]. Scientia Silvae Sinicae, 2011, 47(7) |
| |
| Authors: | Li Yan Aori Gele Han Yanming |
| |
| Affiliation: | Li Yan1 Aori Gele2 Han Yanming1 (1. Research Institute of Wood Industry,CAF Beijing 100091,2. State Key Laboratory of Pulp and Paper Engineering South China University of Technology Guangzhou 510640) |
| |
| Abstract: | Acetic acid lignin(AAL) was isolated from acetic acid pulping waste liquor. The structure of acetic acid lignin was characterized by Fourier infrared spectroscopy(FTIR)and 31P-NMR spectrum.And the molecular mass distribution of acetic acid lignin was determined on a gel permeation chromatography (GPC). Rigid polyurethane foams were prepared from acetic acid lignin,polyether polyol and toluene diisocyanate in the presence of catalyst,silicone surfactant and foaming agent. Thermal stability and physical chara... |
| |
| Keywords: | acetic acid pulping acetic acid lignin(AAL) rigid polyurethane foam |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
