Txawm hais tias seem thib ob - hais txog cov muaj pes tsawg leeg ntawm cov thermoplastic vulcanizates (TPV)- sau tseg tias kwv yees li 99 ntau hom TPVs tuaj yeem tsim tau raws li kev xav, qhov tseeb, tsuas yog qee tus lej tau ua tiav kev lag luam. Kev ua lag luam feem ntau yog tswj hwm los ntawm ob pawg tshwj xeeb ntawm TPVs:
1. Polyolefin-raws li Thermoplastic Dynamic Vulcanizates (PP/EPDM-raws li)
Cov no sawv cev rau cov chav kawm siab tshaj plaws ntawm polyolefin-raws li thermoplastic elastomers, synthesized siv dynamic full-vulcanization technology. Muab piv rau cov pa polyolefin-raws li cov thermoplastic elastomers, lawv pom cov ntsiab lus roj hmab tau qis dua ntawm chav tsev kub - feem ntau tsawg dua 3%. Nyob rau hauv cov nqe lus ntawm microphase morphology, cov pa polyolefin elastomers feem ntau pom txawv cov qauv kev npaj nyob ntawm seb tus txheeb ze proportions ntawm polyolefin thiab roj hmab Cheebtsam. Nyob rau hauv sib piv, lub microphase morphology ntawm thermoplastic vulcanizates yog tus yam ntxwv los ntawm ib tug heev cross- txuas roj hmab theem uas, thaum lub sij hawm yaj- cov txheej txheem sib tov, yog sheared rau hauv zoo hais thiab dispersed nyob rau hauv lub polyolefin matrix los ua ib tug dispersed theem; qhov morphology no tseem zoo ib yam tsis hais cov roj hmab theem cov ntsiab lus. Cov micro-cov cheeb tsam ntawm cov roj hmab thiab cov yas theem muaj nyob rau hauv ib lub xeev ntawm kev sib cais thaum ib txhij tuav cov ntaub ntawv tshwj xeeb ntawm kev sib txuas. Cov yam ntxwv no tso cai rau cov khoom siv nrog ntau yam khoom zoo tshaj plaws, tso cai rau nws los ze ze rau qhov kev ua tau zoo ntawm cov thermoset elastomers hauv ntau qhov kev hwm-thaum khaws cov txheej txheem ntawm cov thermoplastics-yog li tsim nws ua ib qho kev sib tw rau cov khoom siv thermoset elastomers.
2. Roj-Resistant Thermoplastic Dynamic Vulcanizates (PP/NBR-raws li)
Vim muaj Nitrile Butadiene Roj Hmab (NBR) nyob rau hauv qhov system no, nws nthuav tawm cov roj zoo dua piv rau PP/EPDM-raws li TPV system. Txawm li cas los xij, vim tias kev daws teeb meem kev sib raug zoo ntawm PP thiab NBR nthuav tawm cov kev sib tw tseem ceeb, tsuas yog xaiv ob peb lub lag luam muaj peev xwm tsim cov khoom siv no ntawm kev lag luam.
Tau ntau tshaj li ob xyoo lawm, Dawn Group tau koom nrog kev lag luam tawm tswv yim- kev kawm koom tes nrog Beijing University of Chemical Technology. Los ntawm kev siv lawv cov kev muaj zog, ob lub koom haum tau ua tiav txoj hauv kev tshiab kev sib koom ua ke nrog "kev tsim khoom, kev kawm, kev tshawb fawb, thiab daim ntawv thov." Qhov kev sib koom tes no tau pab txhawb kev ua lag luam ua tiav thiab kev siv ntau yam kev tsim kho tshiab, suav nrog siab -kev ua tau zoo thermoplastic elastomers (TPV), hydrogenated nitrile butadiene roj hmab (HNBR), thiab thib peb- tiam roj hmab barrier cov ntaub ntawv (DVA).