Invention ntawm yas
Yas - Lo lus los ntawm Greek (plastikos), lub ntsiab lus haum rau molding, uas yog, plasticity nyob rau hauv cov txheej txheem tsim, cia lawv mus cam khwb cia.
Ua ntau yam duab. Lub invention ntawm yas tuaj yeem hu ua ib tug masterpiece ntawm noob neej nyob rau hauv lub xyoo pua 20th, tom qab ntau tshaj 100 xyoo ntawm txoj kev loj hlob, yas tau nyob txhua qhov chaw Nws tau dhau los ua ib qho tseem ceeb raw khoom rau niaj hnub civilized haiv neeg.
Paxsing
"Paksin" yog thawj zaug pom - loj hlob yas. Nyob rau xyoo 1850, English chemist Parkes tau tshawb fawb txog kev ua collodion, Kev sib xyaw collodion nrog camphor, tsim ib qho. Cov khoom siv tawv muaj peev xwm khoov. Thiab hu ua 'Paksin'. Parkes siv "Paxine" ua txhua yam los ntawm combs mus rau cov nyees khawm rau cov hniav nyiaj hniav kub, thiab cov neeg nyiam nws.
celluloid
Xyoo 1860, Hiatt tau txhim kho cov txheej txheem tsim khoom ntawm "Paksin" thiab hloov npe nws "Celluloid". "Ceruloc yog thawj zaug siv rau hauv kev tsim cov pob billiard, tab sis raws li kev lag luam yas txuas ntxiv, "Ceruloc" tau ua rau ntau hom.
Khoom. "Celluloid" yog ib tug txiv neej-tsim yas, nrog rau cov yam ntxwv flammable, yog li nws cov khoom ntau lawm yog txwv.
Invention ntawm polyethylene
Xyoo 1933, Reginald Gibson thiab Eric Fawcett ntawm ICI tau pom tias ethylene tuaj yeem ua polymerized rau hauv polyethylene nyob rau hauv kev kub siab.Qhov no yog hu ua txoj kev kub siab, thiab kev lag luam tsim tau pib xyoo 1939. Polyethylene (PE) ces hloov mus rau hauv qis-density. polyethylene (LDPE) thiab high-density polyethylene (HDPE) nyob rau hauv ob daim ntawv. Thaum xyoo 1950, Asmeskas Phillips Roj Tuam Txhab nrhiav tau chromium oxide Raws li cov khoom siv hluav taws xob, ethylene tuaj yeem ua polymerized los tsim cov polyethylene high-density polyethylene nyob rau hauv nruab nrab siab, thiab kev lag luam tsim tau tiav nyob rau hauv 1957. Nyob rau hauv lub 60s, Canada lub tuam txhab DuPont pib siv ethylene thiab a-Low density poly (B) teb tau npaj los ntawm olefin los ntawm txoj kev daws teeb meem. PE yog pheej yig, yoog raws, txuas thiab tiv taus tshuaj lom neeg corrosion. LDPE yog siv rau hauv kev tsim cov yeeb yaj kiab thiab ntim cov ntaub ntawv HDPE feem ntau yog siv los ua cov thawv, cov kav dej thiab qhov chaw pib.
Peb lub tuam txhab siv cov khoom siv polyethylene
Zhongshang huangpu guoyu yas khoom Hoobkas Lub lag luam tseem ceeb ntawm kev faib yog cov yas kev lag luam, tab sis nyob rau hauv cov kev xaiv ntawm cov ntaub ntawv yuav xaiv polyethylene, Yog vim li cas yog nws Polyethylene odorless, non-toxic, zoo li wax, muaj zoo heev kub tsis kam (tsawg kawg siv Qhov kub thiab txias tuaj yeem ncav cuag -100 ~ -70 ° C), tshuaj lom neeg ruaj khov, ua haujlwm rau feem ntau cov kua qaub thiab alkali yaig (tsis tiv taus cov kua qaub nrog oxidation zog). Insoluble nyob rau hauv cov kuab tshuaj nyob rau hauv chav tsev kub, tsis tshua muaj dej nqus, zoo hluav taws xob rwb thaiv tsev .. hnyav dua. Nyiv tsis quav ntsej txog kev txwv thoob ntiaj teb rau kev tso tawm ntawm cov pov tseg nuclear, uas ua rau kev puas tsuaj rau ib puag ncig ecological. Qhov peb ua tau yog peb ua tau zoo tshaj plaws los tiv thaiv ib puag ncig uas peb muaj peev xwm ciaj sia
Post lub sij hawm: Aug-28-2023