工程塑料应用
工程塑料應用
공정소료응용
ENGINEERING PLASTICS APPLICATION
2015年
3期
94-97
,共4页
刘渊%杜婕%罗军%冯晓琴
劉淵%杜婕%囉軍%馮曉琴
류연%두첩%라군%풍효금
酚醛树脂%腰果壳酚%固化行为%动力学
酚醛樹脂%腰果殼酚%固化行為%動力學
분철수지%요과각분%고화행위%동역학
phenolic resin%cardanol%curing behavior%kinetics
在以气质联谱分析腰果壳酚组成的基础上,以腰果壳酚、苯酚、甲醛为原料制备了腰果壳酚改性酚醛预聚体,采用不同的升温速率,利用差示扫描量热(DSC)仪将预聚体在50~380℃的范围内进行动态固化行为分析,并运用Kissinger方程和Ozawa方程对改性树脂的固化行为进行了动力学研究。结果表明,实验中所使用的腰果壳酚仅有相对分子量为300,302和304的三种结构,根据质谱结果估算其整体平均相对分子质量为302;此外,通过对改性后的酚醛树脂的DSC表征可以看出,随着升温速率的加快,树脂固化的峰值温度逐渐向高温方向移动,从203.10℃移动至246.73℃;通过Kissinger法拟合直线计算的改性树脂固化反应的活化能约为11.44103 kJ/mol;通过Ozawa法计算改性树脂固化活化能约为15.1566 kJ/mol,两种方法计算所得的结果较为相近。
在以氣質聯譜分析腰果殼酚組成的基礎上,以腰果殼酚、苯酚、甲醛為原料製備瞭腰果殼酚改性酚醛預聚體,採用不同的升溫速率,利用差示掃描量熱(DSC)儀將預聚體在50~380℃的範圍內進行動態固化行為分析,併運用Kissinger方程和Ozawa方程對改性樹脂的固化行為進行瞭動力學研究。結果錶明,實驗中所使用的腰果殼酚僅有相對分子量為300,302和304的三種結構,根據質譜結果估算其整體平均相對分子質量為302;此外,通過對改性後的酚醛樹脂的DSC錶徵可以看齣,隨著升溫速率的加快,樹脂固化的峰值溫度逐漸嚮高溫方嚮移動,從203.10℃移動至246.73℃;通過Kissinger法擬閤直線計算的改性樹脂固化反應的活化能約為11.44103 kJ/mol;通過Ozawa法計算改性樹脂固化活化能約為15.1566 kJ/mol,兩種方法計算所得的結果較為相近。
재이기질련보분석요과각분조성적기출상,이요과각분、분분、갑철위원료제비료요과각분개성분철예취체,채용불동적승온속솔,이용차시소묘량열(DSC)의장예취체재50~380℃적범위내진행동태고화행위분석,병운용Kissinger방정화Ozawa방정대개성수지적고화행위진행료동역학연구。결과표명,실험중소사용적요과각분부유상대분자량위300,302화304적삼충결구,근거질보결과고산기정체평균상대분자질량위302;차외,통과대개성후적분철수지적DSC표정가이간출,수착승온속솔적가쾌,수지고화적봉치온도축점향고온방향이동,종203.10℃이동지246.73℃;통과Kissinger법의합직선계산적개성수지고화반응적활화능약위11.44103 kJ/mol;통과Ozawa법계산개성수지고화활화능약위15.1566 kJ/mol,량충방법계산소득적결과교위상근。
On the basis of analyzing cardanol composition by GC-MS spectrogram,cardanol modified phenolic oligomer was synthesized by using cardanol,phenol,and formaldehyde. Furthermore,the oligomer was cured by DSC at different heat speed rates. Kissinger function and Ozawa function were employed to perform the kinetic analysis of curing behaviors of oligomers. The results show that the selected cardanol contains three components whose relative molecular mass was 300,302,304 respectively. Besides, the curing peak temperature of modified phenolic resin moves from 203.10℃to 246.73℃;the curing reaction activation energy is about 11.441 03 kJ/mol obtained by Kissinger formula,and it is around 15.156 6 kJ/mol calculated by Ozawa formula,and the two results were quite similar with each other.