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玄武岩纤维改性脲醛树脂制备保温泡沫材料
Preparation of Thermal Insulation Foam from Urea-Formaldehyde Resin Modified by Basalt Fiber
【摘要】 采用玄武岩纤维改性脲醛树脂制备脲醛树脂泡沫材料(UFF),探讨不同玄武岩纤维含量对UFF的形态学及物理性质的影响;对比分析其他助剂改性的脲醛泡沫材料的各项性能。结果表明,添加玄武岩纤维虽然不会改变UFF的泡孔结构,但玄武岩纤维可以显著减小UFF的泡孔尺寸(100~800μm)。因此,随着UFF中玄武岩纤维含量的增加,UFF的发泡倍率逐渐增加,从而导致UFF表观密度的下降。添加0.6%的玄武岩纤维后,UFF的抗压强度最高,较未改性前提高了28%。此外,玄武岩纤维有效地降低了UFF泡沫的粉化率,当添加0.8%的玄武岩纤维后,UFF的粉化率降低到了13.5%,与未改性前相比,降低了45%。此外,UFF的导热性能也随着玄武岩纤维的添加而增加,泡沫材料的LOI也随之增大。实验结果表明,玄武岩纤维的添加有助于提升UFF材料的阻燃性能与力学性能。
【Abstract】 Basalt fiber was used to modified urea-formaldehyde resin to prepare urea-formaldehyde resin foam(UFF). Comparative analysis of the properties of urea-formaldehyde foams modified by other additives was also performed. The cell structure of UFF was not changed after adding basalt fiber, but basalt fiber could significantly reduce the cell size of UFF(100~800 μm). Therefore, the expansion ratio of UFF increased along with the increasing percentage of basalt fiber in urea-formaldehyde resin foam, resulting in a decrease in the apparent density of UFF. After adding 0.6% basalt fiber, UFF showed the highest compressive strength, which was 28% higher than that before modification. In addition, the basalt fiber effectively reduced the differentiation rate of UFF foam. When 0.8% of basalt fiber was added, the differentiation rate of UFF was reduced to 13.5%, which was 45% lower than that before unmodified. In addition, the thermal conductivity of UFF also increased with the addition of basalt fibers, and the LOI of the foam material also increased. In addition, basalt fibers helped to improve the flame retardant and mechanical properties of UFF materials.
【Key words】 basalt fiber; urea formaldehyde resin; thermal insulation performance; compressive strength; the microstructure;
- 【文献出处】 塑料 ,Plastics , 编辑部邮箱 ,2023年03期
- 【分类号】TQ328
- 【下载频次】43