采用三聚氰胺对聚乙烯醇进行化学改性,制备了聚乙烯醇缩甲醛泡沫材料(PVFM).探讨了材料的制备并研究了三聚氰胺用量对材料性能的影响.采用红外光谱、热失重分析法和差示扫描量热法对材料进行了测试表征.当三聚氰胺含量相对于聚乙烯醇为7.5%时,材料的拉伸强度为1.96 MPa,比未改性材料提高两倍多;初始热分解温度为322.5℃,比改性前提高了81.6℃.上述结果表明,三聚氰胺的加入明显改善了PVFM的拉伸强度和耐热性.
Poly(vinyl formal) cellular plastics(PVFM) modified by melamine was prepared.The preparation of PVFM and the effect of the melamine amount on the properties were investigated.The formation of the modified material was confirmed by Fourier transform infrared spectroscopy(FT-IR).The thermal property was determined by thermogravimetry analysis(TGA), derivative thermogravimetry analysis(DTG) and differential scanning calorimetry(DSC).By adding of 7.5% melamine, the tensile strength is 1.96 MPa, which is 200% higher than that of the material in the absence of melamine.The onset thermal decomposition temperature is 322.5 ℃, which is 81.6 ℃ higher than that of the origin PVFM.Melamine has obvious effect on the tensile strength and the thermal stability of PVFM.
参考文献
| [1] | 王光钊,李静.PVFM泡沫塑料的研究及应用[J].塑料科技,2006(05):70-73. |
| [2] | Chetri P.;Dass NN. .PREPARATION OF POLY(VINYL FORMYL) OF HIGH ACETALIZATION[J].Polymer: The International Journal for the Science and Technology of Polymers,1997(15):3951-3956. |
| [3] | 贺鹏,齐鲁.改性三聚氰胺树脂纤维性能的研究[J].高分子材料科学与工程,2007(01):165-168. |
| [4] | Youliang Hu;Lin Ye;Xiaowen Zhao .Synthesis of the melamine-formaldehyde polycondensate and its thermal stabilization effect on polyoxymethylene[J].Polymer: The International Journal for the Science and Technology of Polymers,2006(8):2649-2659. |
| [5] | 马天信.聚乙二醇对三聚氰胺甲醛树脂的改性研究[J].粘接,1999(02):23. |
| [6] | Devallencourt C.;Fafet A.;Ubrich E.;Saiter JM. .THERMOGRAVIMETRY FOURIER TRANSFORM INFRARED COUPLING INVESTIGATIONS TO STUDY THE THERMAL STABILITY OF MELAMINE FORMALDEHYDE RESIN[J].Thermochimica Acta: An International Journal Concerned with the Broader Aspects of Thermochemistry and Its Applications to Chemical Problems,1995(1):143-151. |
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