1、rgggfgTdTdVVVV0)()(grgTTdTdVVV)()(ggrfTfTTdTdVdTdVVVrgrdTdVV1gggdTdVV1grf)()(ggfgTTTTTff)(6.51)(44.17)()(lggggTTTTTT025.0gfDoolittle方程把液体的粘度与自由体积联系起来方程把液体的粘度与自由体积联系起来)/exp(0fVBVA)(/)(ln)(ln0TVTBVATf)(/)(ln)(ln0gfggTVTBVAT)(/)()(/)()()(ln00gfgfgTVTVTVTVBTT由上两式得由上两式得因为)()()()()(00TVTVTVTVTVffffT所以)(/)
2、()()(11)()(lngffggggfgggfgTTggTgTTfTTfBTTffTTBffffBffBTT)(/)(303.2)()(loggffggggTTfTTfBTT比较WLF方程,有:44.17303.2gfB6.51/fgf通常1B这样,%5.2025.0gf度/108.44fPE:CH268。CH2nCH2nO83。POM:CH3nO123。聚二甲基硅氧烷:CH3SiPE:CH268。CH2nPP:CH10。CH2n20。CH3CH20。CH2nOCH3聚甲氧乙烯CHCH2nOCH3聚丙稀酸甲酯CO15。PVC:CHCH2nClCHCH2n聚丙烯酸:COOH106。87。PA
3、N:CHCH2n104。CNCCH2nOCH3CO120。CH3PMMA:侧基极性增加,偶极距增加。Tg增高igiigTnTiiiigZYT/PP:CHCH2nCH310。40。PIB:CCH2nCH3CH370。CHCH2nCCH2n40。FFF87。CHCH2nCCH2n17。ClClCl208。100。CH2CH2n29。CHCH2nCH2CCH3CH3CHCH2nNCHCH2n68。刚性侧基增大,Tg增大。PE聚4甲基戊烯1PS聚乙烯咔BBgAgBgAgWKWTKTTT)1(1)(此式被广泛应用于非晶无规共聚物中。此式被广泛应用于非晶无规共聚物中。gBBBBBgABABBABAgAAA
4、AAgTPWTPWPWTPWT1gBBgAAgTWTWT1xgxgKTTxgTgTgTgTMKTTgg)(nMN/2)(2ggfnTTMNnfggMNTT2)(2fNK测量方法测量方法介电损耗介电损耗动态力学动态力学慢拉伸慢拉伸膨胀计法膨胀计法频率频率1000893Tg()3225157 作用频率减小,玻璃化转变温度降低。作用频率减小,玻璃化转变温度降低。Tgbalognnn/yxxy(1)非晶高聚物)非晶高聚物 a)链段链段 b)整链整链(2)结晶高聚物)结晶高聚物 a)链段链段 b)整链整链 c)晶粒晶粒)1cos3(212F11cos,02f3/1sincos41cos22dd4454,0F)12(31arccosF2cos21CCFu22321cosCCu