摘要
探讨生物质液化制备酚醛树脂的液化条件、树脂化条件及其性能,分析了生物质的液化率、残渣率,生物质酚醛树脂的红外谱图、粘度、残余酚含量、复合材料拉伸性能等实验数据。研究结果表明,不同生物质对液化条件的要求各不相同,其中竹粉的最佳液化条件是以苯酚重量5%的硫酸为催化剂,反应时间为60 min;同样液化条件下,生物质液化物合成酚醛树脂的树脂化条件相近,每10 g生物质液化物盐酸催化剂添加量为0.6 mL,反应时间为30 min;在最佳实验条件下,竹粉酚醛树脂的各项综合指标最佳,相对粘度最大、液化率最高、残渣率最低、残余酚含量低,其与玻璃纤维布复合的拉伸弹性模量经向和纬向分别是1 508.56 MPa和1 161.40 MPa,大大提高了基底材料性能,使材料刚度更好;通过红外谱图研究发现,不同生物质液化物制备的酚醛树脂结构相同,说明生物质液化物可替代苯酚作为原料与甲醛进行树脂化反应,大大降低了生产成本,减少了苯酚对环境的污染。
This study aimed at exploring the liquefied conditions and resin reaction conditions and the performance of biomass phenolic resin. Then the experimental data, including the liquefied rate, the residual rate,IR spectrum, viscosity, residual phenol and tensile performance, was analyzed. The results showed that the optimal liquefied conditions of different biomass was different, the liquefied time of bamboo powder was 60 min,the mass ratio of sulfuric acid to phenol was 5%. Under the same liquefied conditions, the resin reaction condition of different biomass was similar, the dosage of hydrochloric acid(per 10 g of liquefied biomass) was 12 d pin drop, the resin reaction time was 30 min. In the optimal experimental conditions, the composite indicator of bamboo powder phenolic resin was best, including relative viscosity of the maximum, liquefied rate of the highest,residual rate of the lowest, residual phenol of low too. And the material stiffness of the composite of the combination of bamboo powder phenolic resin and glass fiber cloth was better. Such as the elastic modulus of the warp and woof were 1 508.56 MPa and 1 161.40 MPa, greatly improving the performance of the base material. In addition, because the IR characteristic of different biomass was common, so the liquefied biomass entirely can replace phenol to as a good raw material for synthetic phenolic resin, greatly reducing the cost of production and the pollution of phenol.
作者
苏良佺
SU Liang-quan(Fujian Academy of Forestry, Fuzhou 350012, China)
出处
《广州化学》
CAS
2019年第2期1-9,共9页
Guangzhou Chemistry
基金
福建省林业厅项目(闽林科【2017】3号)
关键词
生物质
液化
树脂化
生物质酚醛树脂
biomass
liquefaction
resinification
biomass phenolic resin
