通过全水发泡“一步法”制备聚氨酯泡沫,探究添加不同含量角蛋白和锡酸锌对聚氨酯泡沫阻燃性能的影响。采用热重分析、锥形量热、极限氧指数(LOI)等方法对聚氨酯泡沫的阻燃性能进行表征。结果表明,当角蛋白和锌酸锡加入聚氨酯泡沫中时,其LOI由20.1%提高到20.9%,其中添加5g锡酸锌的聚氨酯泡沫的LOI最高为20.9%。此外,基于热重分析和锥形量热数据,发现添加3%角蛋白泡沫与5g锡酸锌的改性聚氨酯泡沫的阻燃效果最好。
Polyurethane foams were prepared by one-step method of all-water foaming.The effects of adding different contents of keratin and zinc stannate on the flame retardant properties of polyurethane foams were investigated.The flame-retardant properties of modified polyurethane foams were characterized by thermogravimetric tests (TG),cone calorimetry (CONE) and limited oxygen index (LOI).The experimental results showed that the LOI of polyurethane foam increased from 20.1% to 20.9% when keratin and zinc stannate were added to polyurethane foam.The highest LOI of 20.9% was achieved for the polyurethane foam with 5g of zinc stannate.In addition,based on TG and CONE data,it was found that the modified polyurethane foam added with 3wt% keratin and 5g zinc stannate had the best flame retardant effect.
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基金资助
辽宁省教育厅项目(JYT2020011)
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