Natural rubber is made by extracting a kuasap, hu ua latex, from some types of tree. Muaj ntau tshaj 2,500 hom ntoo uas tsim cov kua txiv hmab txiv ntoo no (xws li cov nroj tsuag zoo li dandelions), tab sis feem ntau ntawm cov latex rau cov roj hmab ntau lawm yog los ntawm tsob ntoo Hevea brasiliensis, los yog tsob ntoo muaj npe zoo.
Koj puas tuaj yeem ua roj hmab hauv tsev?
Natural roj hmab muab los ntawm tsob ntoo roj hmab cov kua; hluavtaws roj hmab yog cov khoom siv los ntawm tib neeg. Koj tuaj yeem ua koj tus kheej roj hmab hauv tsev siv pob kws thiab silicone, uas tuaj yeem dyed thiab molded rau hauv txhua yam koj xav tau. Thaum koj ua cov roj hmab hauv tsev, koj tuaj yeem tsim nws ntawm tes lossis muab tso rau hauv pwm.
roj hmab ua ib kauj ruam li cas?
Kev ua cov roj hmab muaj plaub theem pib: (1) mastication, thaumcov elastomer yog sheared thiab cov molecules tau tawg kom yooj yim ntws, (2) sib tov, feem ntau nqa tawm tam sim ntawd tom qab mastication, thaum additives yog incorporated, (3) shaping ntawm viscous huab hwm coj, piv txwv li, extrusion los yog molding, thiab …
Cov khoom xyaw hauv roj hmab yog dab tsi?
Cov tshuaj lom neeg tseem ceeb ntawm cov roj hmab yogelastomers, lossis "elastic polymers," loj chainlike molecules uas tuaj yeem ncab mus rau qhov ntev thiab tseem rov qab zoo li qub. Thawj hom elastomer yog polyisoprene, los ntawm cov roj hmab ntuj tsim.
Yuav ua li cas ua cov roj hmab ntuj?
Roj hmab yog sau los ntawmcov ntoo roj hmab, uas yog ib tsev neeg ntawm cov ntoo uas yog tsev neeg Euphorbiace; Hevea brasilienisis lossis Sharinga ntoo yog qhov ntau tshaj plaws. Cov roj hmab ntuj yog muab rho tawm los ntawm txoj kev hu ua tapping, los ntawm kev txiav rau hauv cov tawv ntoo thiab sau cov kua rau hauv cov hlab uas txuas nrog cov ntoo roj hmab.
