Ukadaulo woletsa moto wa raba

Kupatulapo zinthu zingapo zopangira mphira, zinthu zambiri zopangira mphira, monga mphira wachilengedwe, zimatha kuyaka kapena kuyaka. Pakalipano, njira zazikulu zomwe zimagwiritsidwa ntchito kuti ziwongolere kuchedwa kwa malawi ndi kuwonjezera zoletsa moto kapena zodzaza moto, ndi kusakaniza ndi kusintha ndi zipangizo zomwe zimawotcha moto. Pali mitundu ingapo ya matekinoloje oletsa moto wa raba:
1. Labala wa Hydrocarbon
Labala ya hydrocarbon imaphatikizapo NR, SBR, BR, ndi zina zotero. Labala ya Hydrocarbon nthawi zambiri imakhala yosagwira bwino kutentha komanso kusagwira ntchito kwa malawi, ndipo zinthu zambiri zomwe zimawola zikayaka zimakhala mpweya woyaka. Kuonjezera zoziziritsa moto ndi njira yofunikira yowonjezeretsa kuchedwa kwa labala la hydrocarbon, ndipo mphamvu ya synergistic ya zoletsa moto zimagwiritsidwa ntchito kuti zipititse patsogolo mphamvu ya retardancy. Komabe, chidwi chiyenera kulipidwa ku zotsatirapo za kuchuluka kwa lawi retardant pa makina zimatha mphira.
Onjezani ma inorganic retardant filler monga calcium carbonate, dongo, talcum powder, white carbon black, Aluminium hydroxide, etc. kuti muchepetse kuchuluka kwa zinthu zomwe zimayaka. Calcium carbonate ndi nitrogen alumina amakhala ndi endothermic zotsatira zikavunda. Njirayi idzachepetsa zinthu zina zakuthupi ndi zamakina za mphira, ndipo kuchuluka kwake sikuyenera kukhala kwakukulu.
Kuphatikiza apo, kuchulukitsa kachulukidwe ka mphira kumatha kukulitsa index yake ya oxygen. Chifukwa chake, imatha kuwongolera kuwonongeka kwa lawi la mphira. Izi zikhoza kukhala chifukwa cha kuwonjezeka kwa kutentha kwa kutentha kwa zinthu za rabara. Njirayi yagwiritsidwa ntchito mu rabala ya Ethylene propylene
2. Labala wa halojeni
Rabara ya halogenated imakhala ndi zinthu za halogen, zomwe zimakhala ndi ndondomeko ya okosijeni nthawi zambiri pakati pa 28 ndi 45, ndipo ndondomeko ya okosijeni ya FPM imaposa 65. Kukwera kwa halogen mu rabara ya halogenated, kumapangitsa kuti mpweya wake ukhale wapamwamba. Labala wamtundu woterewu umakhala ndi mphamvu yochedwa ndi moto ndipo umazimitsa ukayaka. Chifukwa chake, chithandizo chake choletsa moto ndi chosavuta kuposa mphira wa hydrocarbon. Kuti apititse patsogolo kuwonongeka kwa malawi a rabara ya halogenated, njira yowonjezerera zoletsa moto nthawi zambiri imatengedwa.
3. Heterochain rabala
Mtundu woyimilira kwambiri wa mphira m'gululi ndi rabara ya dimethyl silicone, yokhala ndi index ya okosijeni pafupifupi 25. Njira zenizeni zochepetsera moto zomwe zimagwiritsidwa ntchito ndikuwonjezera kutentha kwake kwa kutentha, kuwonjezera zotsalira pakuwola kwamafuta, ndikuchepetsa kupanga kwamafuta. mpweya woyaka.