Keeb Kwm Kev Loj Hlob

Xim yog txheej txheej ua los ntawm cov ntaub ntawv xws li hlau oxide lossis cob ua haujlwm los kho kom zoo nkauj thiab tiv thaiv cov lus. Lub hauv paus chiv keeb ntawm cov xim yog tseem tsis tau muaj. Hauv 6000 BC, Tuam Tshoj tau txhim kho cov xim los ntawm kev sib xyaw thiab ci inorganic sib xyaw thiab cov organic pigments. Hauv 1500 BC, hauv qhov tsua ntawm Fabkis thiab Spain, xim tau siv rau kev pleev xim thiab dai kom zoo nkauj. Hauv 1500 BC, cov neeg Iyiv tau siv DYES xws li Is Nrias teb thiab Valerian los ua cov xim xiav thiab liab, tab sis cov xim tseem tsis zoo tag nrho. Nyob rau hauv lub xyoo pua 18th, kev txhim kho cov roj ntaws thiab zinc oxide ua cov xim lag luam tau sai. Nyob rau hauv lub xyoo pua 20, cov xim pleev xim tau dhau los tsim kev loj hlob. Cov xim tsev thiab xim pleev xim rau ntau cov xim nrog cov xim nplaum ntau dua, cov nplaim hluavtaws tsis tshua muaj zog thiab muaj cov roj zaub feem ntau tau siv cov khoom lag luam tseem ceeb. "Pleev xim", xws li kev noj qab haus huv thiab ib puag ncig tus phooj ywg rung roj. Seb nws yog cov khoom siv tsoos ua cov khoom siv uas yog cov khoom siv hluav taws xob ua haujlwm hauv cov khoom siv hluav taws xob, thiab cov txheej txheem hluavtaws uas muaj cov khoom siv hluav taws xob, thiab cov txheej txheem xov xwm hluav taws xob yog cov khoom siv hluav taws xob niaj hnub no Raws li kev faib tawm ntawm cov khoom siv tshuaj niaj hnub, cov tshuaj pleev xim yog cov khoom siv tshuaj lom zoo. Niaj hnub nimno txheej yog maj ua ib chav kawm ntawm ntau cov ntaub ntawv engineering thiab kev lag luam tseem ceeb hauv kev lag luam tshuaj.