Nyob rau hauv qhov kev txiav txim ntawm sab nraud rog, polymers tsim elastic deformation ntawm cov khib nyiab, tshwj xeeb siab elastic deformation thiab viscous ntws zoo ib yam li cov kua. Cov cuab yeej no hu ua viscoelasticity. Lub adhesion ntawm lub siab-rhiab nplaum nplaum (xws li tev quab yuam, ceev viscosity, thiab lwm yam) nyob ntawm qhov loj ntawm elasticity ntawm cov polymers uas ua rau lub siab-rhiab nplaum nplaum, los yog lub siab-rhiab khoom ntawm siab-rhiab nplaum nplaum. Feem ntau yog nyob ntawm elasticity ntawm cov polymer. Txij li thaum cov lus teb ntawm lub siab-rhiab nplaum nplaum rau sab nraud rog yog ib nrab elastic thiab ib nrab viscous, qhov kub ntawm lub polymer raws li lub siab-rhiab nplaum nplaum yog txwv rau iav hloov kub TG thiab melting point TM, uas yog, nws yog nyob rau hauv ib tug heev elastic xeev. Hauv lwm lo lus, lub iav hloov pauv kub ntawm lub siab-rhiab nplaum nplaum yuav tsum yog -600 degree Tsawg dua lossis sib npaug li 200 C.
Txij li thaum lub siab-rhiab nplaum nplaum muaj viscoelasticity, thaum lub siab-rhiab nplaum daim kab xev (daim ntawv) txuas mus rau saum npoo ntawm cov khoom raug adhered rau thiab siv lub siab tsim nyog, lub siab-rhiab nplaum nplaum feem ntau nthuav tawm cov kua nplaum zoo ib yam li cov kua dej. qeeb thiab txawm siab. Kaw kev sib cuag ntawm lub siab-rhiab nplaum nplaum thiab qhov chaw ntawm cov khoom raug sib raug zoo kom ua tiav kev sib raug zoo. Feem ntau ntawm lawv yog nqa tawm ntawm kev kub ceev. Nyob rau ntawm lub sijhawm no, viscoelasticity ntawm lub siab-rhiab nplaum nplaum tso cai rau lub siab-rhiab nplaum cov khoom kom ua tiav ib qho kev cog lus ruaj khov, tsuav yog siv lub siab tsim nyog yam tsis muaj kev kho ntxiv.
