Txoj Cai Ntawm Cold-Resistant Plasticizer

Lub nplhaib yas yas li niaj zaus feem ntau yog muab los ntawm cov tshuaj tiv thaiv ntawm benzene raws li cov kuab tshuaj, thiab yuav muaj cov kab mob benzene hauv cov khoom; Thaum lub tshuab txias-resistant plasticizer yog synthesized los ntawm cov txheej txheem siab hnyav-dawb thiab tsis muaj cov kuab tshuaj lom, uas tuaj yeem txo cov pa phem ntawm cov pa phem hauv PVC ua.

Lub hauv paus ntsiab lus ntawm kev ua ntawm cov yas tiv taus txias yog feem ntau suav tias yog ob qho hauv qab no:

1) Thaum cov plasticizer thiab cov resin yaj ua ke, cov molecules me me ntawm plasticizer lub hauv paus ntsiab lus ntawm kev txiav txim yuav muab tso rau ntawm lub polymer molecular chains, tsis muaj zog gravitational quab yuam ntawm cov polymer molecular chains, thiab cov plasticizer lub hauv paus ntsiab lus ntawm kev txiav txim nce qhov kev ncua deb ntawm. Lawv, raws li qhov tshwm sim, ua kom muaj peev xwm ntawm polymer molecular saw txav, txo cov entanglement ntawm polymer molecular chains, kom cov resin tuaj yeem hloov mus rau iav ntawm qhov kub thiab txias, yog li ua kom cov yas ntawm cov yas. . Nws tuaj yeem pom tias lub hauv paus ntsiab lus ntawm kev ua ntawm plasticizers yog lub zog gravitational thiab entanglement ntawm polymer molecular chains, uas yog ib qho tseem ceeb ntawm kev tiv thaiv plasticization.

2) Cov qauv molecular ntawm cov polymer kuj cuam tshuam rau kev nyiam ntawm cov saw hlau polymer molecular, tshwj xeeb tshaj yog cov khoom ntawm cov pab pawg ntawm cov saw hlau molecular. Kev sib cuam tshuam ntawm cov saw hlau molecular nrog cov pab pawg polar muaj zog yog qhov loj, thiab muaj cov pab pawg tsis-polar. Lub zog ntawm cov saw hlau molecular yog me me. Txhawm rau ua kom cov polymer nrog cov pawg polar muaj zog yooj yim rau cov duab, cov yas tuaj yeem muab ntxiv. Cov pawg polar ntawm cov plasticizer yuav cuam tshuam nrog pawg polar ntawm cov polymer, yog li tsis muaj zog Lub zog gravitational ntawm cov polymers ua tiav lub hom phiaj ntawm plasticization.