离子液体木质素氢解产物制备酚醛树脂  

Synthesis of Phenol-Furfural Resins Using Hydrogenolysis Products of Lignin Regenerated via Ionic Liquid Pretreatment

作　　者：常杰[1] Kassanov Bekbolat 王菊[1] 刘钧[1] 付严[1] 

机构地区：[1]华南理工大学化学与化工学院,广东广州510640

出　　处：《华南理工大学学报（自然科学版）》2017年第6期89-95,共7页Journal of South China University of Technology(Natural Science Edition)

基　　金：国家自然科学基金资助项目(21476090);国家重点基础研究发展计划(973计划)项目(2013CB228104);华南理工大学中央高校基本科研业务费专项资金资助项目~~

摘　　要：利用高压反应釜在氢气气氛2 MPa、温度260℃、时间80 min、转速450 r/min的条件下,对1-烯丙基-3-甲基咪唑醋酸盐([AMIM]OAc)预处理竹粉后的再生木质素进行氢解.气相色谱-质谱联用分析表明,所得木质素氢解产物(HPL)多为短链酚类化合物及含酚羟基的芳香化合物.将所得HPL代替苯酚制备糠醛-苯酚树脂,探究了HPL对苯酚的替代率对酚醛树脂粘结强度、固含量、固化时间、游离醛含量、游离酚含量及黏度的影响.结果表明,HPL对苯酚的替代率为60%时,所得酚醛树脂的粘结强度可达2.06 MPa,游离酚含量低于国家标准,固化时间显著缩短.差示扫描量热分析表明,此替代率下所制备的木质素基酚醛树脂热稳定性更好.A hydrogenolysis process was performed for regenerated bamboo lignin after [ AMIM ] OAc pretreatment by using a high-pressure batch autoclave with a rotation rate of 450r/rain in 2MPa H2 atmosphere at 260℃ for 80rain, and a GC-MS analysis was conducted, finding that most hydrogenolysis products of lignin （HPL） are phenolic compounds with short chains or aromatic compounds containing phenol hydroxyl. Then, HPL was used as a substitution for phenol to synthesize phenol-furfural resins （ PFU）, and the effects of substitution rate of HPL for phenol on the bond strength, solid content, curing time, free formaldehyde content, free phenol content and viscosity of PFU were investigated. The results show that, at a substitution rate of 60%, the lignin-based PFU is of a bond strength up to 2.06 MPa as well as a free phenol content lower than those regulated by Chinese national standards, and the curing time greatly shortens. Moreover, DSC results indicate that the lignin-based PFU possesses strong thermostability.

关 键 词：离子液体 氢解 木质素 氢解产物 酚醛树脂 

分 类 号：TQ031.2[化学工程]