生物油酚醛泡沫制备工艺研究

Preparation technology of bio-oil phenolic foam

利用生物油中富含酚类物质的特性,将其与苯酚、多聚甲醛反应合成可发性生物油酚醛树脂,通过调整发泡工艺制备出综合性能优异的生物油酚醛泡沫.结果最佳发泡配方为：以树脂质量分数计,催化剂选用复配比例为m（对甲苯磺酸）/m（磷酸）=2∶1的催化剂体系,质量分数为10％～15％;发泡剂选用石油醚,用量为5％～l0％;表面活性剂选用吐温-80,质量分数为5％,发泡温度控制在75℃.得到的生物油酚醛泡沫各项性能良好.

Bio-oil, which has relatively affluent phenolic compounds, can be partly used as substitution of phenol to prepared bio-oil phenolic foam based on the expandable bio-oil phenolic resins synthesized by bio-oil, phenol and formaldehyde. The optimal synthesis process of bio-oil phenolic foam is explored. The results show that the optimal formulation of bio-oil phenolic foams at present is as follows：lO% -15% of the amount of curing agent （phosphoric acid mixed with p-toluenesulfonic acid in the ratio of 2：1 ）, about 5% - 10% of the amount of foaming agent （petroleum ether） ,5% of the dosage of surfactant （Tween 80） ,75℃ of the foaming temperature. The obtained foam shows excellent properties.