Daim ntaub yaj tawm los tiag tiag! Cia peb ua raws lichaw tsim khoom siv ntaub yajkom nkag siab:
Cov txheej txheem ntaub Meltblown tau pib xyoo 1950, thaum Tebchaws Meskas txhawm rau sau cov khoom me me hauv huab cua sab saud los tsim cov khoom siv lim dej zoo heev, kev txhim kho ntawm lub xeev molten ntawm polymer nyob rau hauv qhov kev ua ntawm qhov kub thiab txias thiab cua ntws, ncaj qha tsim cov ntaub tsis-woven.
Cov thev naus laus zis no ua ke cov thev naus laus zis ua cov khoom siv polymer ntawm kev lag luam tshuaj lom neeg thiab cov thev naus laus zis tsim cov khoom siv tsis-woven ntawm kev lag luam textile, tsim cov thev naus laus zis tshiab hauv kev tshawb fawb txog cov ntaub ntawv los ua cov khoom siv lim dej tshiab thiab ua haujlwm tau zoo.
Cov khoom siv raw ntawm daim ntaub melting tsuag yog polypropylene nrog cov ntsuas melting siab.
Qhov siab dua qhov ntsuas yaj ntawm polypropylene, qhov zoo dua cov fiber, thiab qhov zoo dua qhov lim tau ntawm daim ntaub yaj-tshuaj tsuag yog.
Polypropylene yog ib qho polymer tsim los ntawm kev ntxiv cov tshuaj propylene. Cov khoom siv dawb waxy, pob tshab thiab lub teeb pom kev zoo. Qhov ceev yog 0.89 ~ 0.91g / cm3, flammable, melting point yog 165 ℃, softening ntawm 155 ℃, thiab qhov kub thiab txias yog -30 ~ 140 ℃
Hauv qab 80 ℃ tuaj yeem tiv taus cov kua qaub, alkali, ntsev thiab ntau yam organic solvents corrosion, tuaj yeem decomposed nyob rau hauv kub siab thiab oxidation. Polypropylene yog dav siv rau hauv khaub ncaws, pam thiab lwm yam khoom fiber, khoom siv kho mob, tsheb, tsheb kauj vab, spare qhov chaw, kev thauj mus los pipelines, tshuaj thawv thiab lwm yam khoom, kuj siv rau hauv zaub mov, tshuaj ntim.
Peb yog lub Hoobkas tshuaj tsuag yaj, cov khoom yog:KF94 yaj tshuab,BFE99 yaj tshuab,pp yaj tshuab,n95 yaj-blown;Thov tsis txhob yig tiv tauj peb rau qhov kev hais nqe tshiab tshaj plaws ~
Lub sijhawm tshaj tawm: Kaum Ib Hlis-14-2020