工程塑料应用
工程塑料應用
공정소료응용
ENGINEERING PLASTICS APPLICATION
2013年
7期
12-16
,共5页
刘金虎%赵宝华%李健卓%柳翱%李东风
劉金虎%趙寶華%李健卓%柳翱%李東風
류금호%조보화%리건탁%류고%리동풍
酚醛泡沫%改性%单宁%力学性能%热稳定性
酚醛泡沫%改性%單寧%力學性能%熱穩定性
분철포말%개성%단저%역학성능%열은정성
phenolic foams%modification%tannin%mechanical property%thermostability
制备了生物质单宁改性的酚醛泡沫，利用傅里叶变换红外光谱仪对产物进行了表征，测试了不同单宁添加量对酚醛泡沫力学性能的影响。结果表明，含有单宁结构的酚醛泡沫的力学性能有了显著提升。相比于普通酚醛泡沫，改性酚醛泡沫的压缩强度提高79%，冲击强度提高71%，弯曲强度提高30%。热失重分析表明，改性酚醛泡沫的热稳定性有所下降，相同温度下的失重率较酚醛泡沫增加2%～5%，但依然具有较好的热稳定性。
製備瞭生物質單寧改性的酚醛泡沫，利用傅裏葉變換紅外光譜儀對產物進行瞭錶徵，測試瞭不同單寧添加量對酚醛泡沫力學性能的影響。結果錶明，含有單寧結構的酚醛泡沫的力學性能有瞭顯著提升。相比于普通酚醛泡沫，改性酚醛泡沫的壓縮彊度提高79%，遲擊彊度提高71%，彎麯彊度提高30%。熱失重分析錶明，改性酚醛泡沫的熱穩定性有所下降，相同溫度下的失重率較酚醛泡沫增加2%～5%，但依然具有較好的熱穩定性。
제비료생물질단저개성적분철포말，이용부리협변환홍외광보의대산물진행료표정，측시료불동단저첨가량대분철포말역학성능적영향。결과표명，함유단저결구적분철포말적역학성능유료현저제승。상비우보통분철포말，개성분철포말적압축강도제고79%，충격강도제고71%，만곡강도제고30%。열실중분석표명，개성분철포말적열은정성유소하강，상동온도하적실중솔교분철포말증가2%～5%，단의연구유교호적열은정성。
Phenolic foams modified by tannin,a macromolecule obtained from natural sources,were prepared and characterized.The influence of tannin content was investigated in order to optimize mechanical property and keep thermostability. The results show that significant improvements in mechanical properties are realized by adding tannin.Compared with unreinforced foams, the compression strength improves 79%,impact strength improves 71% and flexural strength improves 30%.The thermal analysis shows that the thermostability of reinforced foams decreases.Compared with unreinforced foam,weight-loss ratios increase 2%~5% at the same temperature ,however,reinforced foams still have excellent thermostability.
