Leej twg tsim lub hnab yas?

2024 Tus sau: Stanley Ellington | [email protected]. Kawg hloov kho: 2023-12-16 00:17

Lub hnab ntim khoom niaj hnub no peb txhua tus paub thiab siv niaj hnub no tau tsim nyob rau xyoo 1960 los ntawm Sten Gustaf Thulin, uas yog Swedish engineer. Nws tau tsim txoj hauv kev tsim cov hnab yas rau lub tuam txhab ntim khoom lag luam Swedish, Celloplast, uas suav nrog kev sib dhos, tuav thiab tuag-txiav lub raj yas.

Ib yam li ntawd, nws tau nug, thaum twg lub hnab yas tau tsim?

Thawj pawg ntawm Gatorade Tasted Terrible Los ntawm 1960s rau, lub tuam txhab tau ua raws li txoj cai nruj rau polyethylene ntim patents thiab los ntawm 1977 tau tsim nws tus kheej hnab . Yas khoom noj hnab tau qhia hauv Asmeskas xyoo 1979; Kroger thiab Safeway tau khaws lawv hauv xyoo 1982.

Ib sab saum toj no, cov hnab yas ua qhov twg? hnab yas feem ntau yog ua los ntawm ib qho ntawm peb hom yooj yim: high-density polyethylene (HDPE), low-densitypolyethylene (LDPE), lossis linear low-density polyethylene (LLDPE). Cov khoom tuab, glossy khoom hnab los ntawm lub khw yog LLDPE, thaum khoom noj khoom haus hnab yog HDPE, thiab tsoos tsho hnab los ntawm lub tshuab ziab khaub ncaws yog LDPE.

Ib yam li ntawd ib tug yuav nug, leej twg invented yas?

Leo Hendrik Baekeland

Vim li cas cov hnab yas hloov cov hnab ntawv?

hnab yas tau tsim los ua lwm txoj hauv kev ntawv khoom noj hnab thaum xyoo 1970s los tiv thaiv tsob ntoo thiab tiv thaiv kev txiav tawm ntawm peb cov hav zoov. hnab yas yog aby-product ntawm natural gas extraction thiab muab ib qho environmentalsolution rau qhov hlawv tawm ntawm cov pa roj thaum lub sij hawm refiningprocess.