Qhov hnyav molecular ntawm polyether polyols muaj qhov cuam tshuam tseem ceeb rau lawv lub hardness. Polyether Polyols uas muaj qhov hnyav dua molecular muaj qis dua cov khoom siv ua npuas dej tau qis dua, kev ua kom zoo thiab lub siab yuav ua rau kom haum.
Ntawm qhov tsis sib xws, polyether polyols nrog hnyav me me ntsha ceeb toom, thiab cov txiaj ntsig mos ua kom muaj zog qis dua, tab sis siab dua elongation.
Qhov hnyav molecular ntawm polyether polyols ncaj qha cuam tshuam rau lawv cov kev cuam tshuam thiab crosslinking degree. Polyether polyols nrog hnyav molecular muaj qis dua molecular muaj qis dua qib siab, ua rau muaj kev nyuaj siab dua tab sis qis dua ntawm cov khoom siv mos ua npuas ncauj; Thaum cov polyetic polyols nrog hnyav me me molecular hnyav muaj cov kev cuam tshuam ntau dua thiab qis dua hardness tab sis ntau dua elongation tab sis elongation ntawm cov khoom siv mos ua npuas. Ib qho ntxiv, kev ua haujlwm ntawm polyether Polyols tseem yuav cuam tshuam lawv lub hardness. Kev ua haujlwm nce ntxiv yuav ua rau muaj kev cuam tshuam ntxiv, thiab tom qab ntawd ntxiv cov kev sib tw ntawm cov npuas dej, tab sis txo qhov kev txom nyem ntawm kev sib tw.
Hauv kev siv cov kev siv, cov hnyav sib txawv ntawm cov polyether polyols tuaj yeem xaiv tau kom tau raws li cov kev xav tau sib txawv. Piv txwv li, thaum lub hardness mos muag khoom siv, polyether polyols nrog hnyav hnyav molecular hnyav tuaj yeem xaiv tau; Thaum siab dua elongation thiab qis dua hardness mos muag khoom siv, polyether polyols nrog hnyav dua molecular hnyav tuaj yeem xaiv tau. Ib qho ntxiv, tswj hwm ntau yam tsis nyob hauv cov txheej txheem ntau lawm, siab, cathetyst hom molecular phaus ntawm polyety polyols, yog li tswj hwm lub hardness ntawm cov khoom.