Lub ntsiab lus ntawm Keeb Kwm Ntawm Polypropylene Fibers

Keeb Kwm Ntawm Polypropylene Fibers

Nyob rau theem pib, propylene polymerization tsuas tuaj yeem tau txais cov khoom lag luam nrog cov ntawv pov thawj polymerization tsawg, uas yog amorphous compounds thiab tsis muaj txiaj ntsig.Xyoo 1954, Ziegler thiab Natta tau tsim cov Ziergler-Natta catalyst thiab ua crystalline polypropylene, uas muaj cov stereotactic siab tsis tu ncua, hu ua tag nrho isotactic polypropylene lossis isotactic polypropylene. Cov txiaj ntsig kev tshawb fawb no tau qhib qhov kev taw qhia tshiab hauv kev ua haujlwm ntawm polymerization, tso lub hauv paus rau kev lag luam loj ntawm polypropylene thiab nws daim ntawv thov dav hauv cov khoom yas thiab fiber ntau.

Xyoo 1957, kev tsim khoom ntawm polypropylene yog thawj zaug pom los ntawm Italian Montecatini tuam txhab. Los ntawm 1958 mus rau 1960, lub tuam txhab siv polypropylene rau fiber ntau lawm, tsim polypropylene fibers nyob rau hauv lub lag luam npe Meraklon, thiab tom qab ntawd pib ntau lawm nyob rau hauv lub tebchaws United States thiab Canada.

Tom qab xyoo 1964, polypropylene membrane cais fiber ntau rau bundling tau tsim, thiab cov zaj duab xis fibrillation tau ua rau hauv textile fiber thiab ntaub pua plag yarn.
Nyob rau hauv lub xyoo pua 70s ntawm lub xyoo pua 20th, cov txheej txheem luv luv spinning thiab cov cuab yeej txhim kho cov txheej txheem ntawm polypropylene fiber ntau. Nyob rau tib lub sijhawm, nthuav cov filaments txuas ntxiv tau pib siv hauv cov ntaub pua plag kev lag luam. Tam sim no, 90 feem pua ​​​​ntawm cov ntaub pua plag rov qab thiab 25 feem pua ​​​​ntawm cov ntaub pua plag thoob ntiaj teb yog tsim los ntawm polypropylene fibers.