Cov roj hmab ntuj, raws li peb feem ntau xa mus rau nws, yog cov khoom siv los ntawm cov khoom siv roj hmab uas tau sau los ntawm cov ntoo roj hmab, tom qab coagulation, ziab thiab lwm yam txheej txheem.Cov roj hmab ntuj yog lub ntuj polymer compound nrog polyisoprene ua nws cov khoom tseem ceeb, nrog rau cov mis mos molecular (C5H8)n.Nws cov roj hmab hydrocarbon (polyisoprene) cov ntsiab lus yog ntau dua 90%, thiab nws kuj muaj cov protein me me, fatty acids, qab zib thiab tshauv.
Lub cev muaj zog ntawm cov roj hmab ntuj.Cov roj hmab ntuj muaj qhov elasticity siab nyob rau hauv chav tsev kub, me ntsis yas, zoo heev mechanical zog, tsis tshua muaj hysteresis poob, tsawg tshav kub tiam thaum muaj ntau yam deformations, yog li ntawd nws flexural kuj kuj zoo heev, thiab vim hais tias nws yog ib tug tsis-polar roj hmab, nws muaj zoo. hluav taws xob rwb thaiv tsev zog.
Roj hmab, ua ke nrog cov yas thiab fibers, yog ib qho ntawm peb cov khoom siv hluavtaws nrog cov qib siab ntawm stretchability thiab elasticity.Roj hmab yog tus yam ntxwv ua ntej los ntawm ib qho me me modulus ntawm elasticity thiab siab elongation tus nqi.Thib ob, nws muaj qhov zoo sib xws rau permeability nrog rau kev tiv thaiv ntau yam tshuaj lom neeg thiab hluav taws xob rwb thaiv tsev.Qee cov roj hmab hluavtaws tshwj xeeb muaj cov roj zoo thiab kub tsis kam, tiv thaiv cov roj o ntawm cov roj, lubricating roj, roj hydraulic, roj roj thiab cov roj hnyav;Kev tiv thaiv txias tuaj yeem qis li -60 ° C txog -80 ° C thiab kub tsis kam tuaj yeem siab li +180 ° C txog + 350 ° C.Roj hmab kuj yog resistant rau txhua yam ntawm flexural thiab dabtsi yog khoov deformations, raws li hysteresis poob yog me me.Cov yam ntxwv thib peb ntawm cov roj hmab yog tias nws tuaj yeem siv tau, sib xyaw thiab sib xyaw nrog ntau yam khoom siv thiab yog li hloov kho kom tau txais kev sib xyaw ua ke zoo ntawm cov khoom.
Post lub sij hawm: Jun-20-2023
