Cov tswm ciab, cov cuab yeej teeb pom kev zoo niaj hnub, feem ntau yog ua los ntawm paraffin, nyob rau hauv ancient sij hawm, feem ntau yog ua los ntawm cov roj roj. Yuav hlawv kom muab lub teeb. Tsis tas li ntawd, tswm ciab yog siv rau ntau lub hom phiaj: nyob rau hauv lub hnub yug, kev cai dab qhuas festivals, pab pawg neeg mourning, thiab kab tshoob kev kos thiab ntees tuag. Hauv kev sau ntawv thiab kos duab, tswm ciab muaj lub ntsiab lus ntawm kev txi thiab kev mob siab rau.
Nyob rau lub sijhawm niaj hnub no, nws feem ntau ntseeg tias tswm ciab pib los ntawm lub teeb ntawm lub sijhawm qub. Cov neeg thaum ub tau pleev xim rau cov tawv nqaij los yog siv quav ciab ntawm cov tawv ntoo los yog cov ntoo chips thiab khi lawv ua ke los ua lub teeb rau teeb pom kev zoo. Nws kuj tau hais tias nyob rau hauv lub pre-Qin thiab ancient sij hawm, ib txhia neeg khi mugwort thiab reed rau hauv ib pawg, thiab ces dipped nyob rau hauv ib co roj thiab ci rau teeb pom kev zoo. Tom qab ntawd, ib tug neeg qhwv ib tug hollow reed nrog daim ntaub thiab sau nws nrog beeswax rau ignite nws.
Lub ntsiab raw khoom ntawm tswm ciab yog paraffin (C₂₅H₅₂), uas yog tsim los ntawm cov wax feem ntawm cov roj tom qab txias xovxwm los yog hnyav dewaxing. Nws yog qhov sib xyaw ntawm ntau cov alkanes, feem ntau n-dodecane (C22H46) thiab n-dioctadecane (C28H58), muaj li ntawm 85% carbon thiab 14% hydrogen. Cov khoom pabcuam ntxiv muaj xws li cov roj dawb, stearic acid, polyethylene, essence, thiab lwm yam, uas stearic acid (C17H35COOH) feem ntau yog siv los txhim kho cov softness, thiab qhov tshwj xeeb ntxiv yog nyob ntawm seb hom tswm ciab yog tsim. Yooj yim rau yaj, ceev tsawg dua dej nyuaj soluble hauv dej. Thaum tshav kub kub yaj mus rau hauv cov kua, tsis muaj xim pob tshab thiab me ntsis tshav kub volatile, tuaj yeem hnov tsw tsw ntxhiab paraffin. Thaum txias, nws yog dawb, nrog ib tug me ntsis tsw tshwj xeeb.
Lub tswm ciab hlawv peb pom tsis yog qhov sib xyaw ntawm cov khoom paraffin, tab sis cov khoom siv hluav taws xob ignites cov paj rwb, thiab cov cua sov tso tawm ua rau cov khoom paraffin yaj thiab revaporize los tsim paraffin vapor, uas yog flammable. Thaum lub tswm ciab tau teeb, lub nplaim taws pib me dua thiab maj mam loj dua. Cov nplaim taws muab faib ua peb txheej (nplaim sab nraud, nplaim sab hauv, nplaim taws lub plawv). Cov nplaim hluav taws kub yog feem ntau tswm ciab vapor nrog qhov kub siab tshaj plaws; Cov nplaim hluav taws sab hauv paraffin tsis tau hlawv tag nrho, qhov kub thiab txias siab tshaj qhov chaw nplaim taws, thiab muaj cov pa roj carbon; Cov nplaim hluav taws sab nrauv tiv thaiv cov huab cua nrog cov huab cua, thiab cov nplaim taws yog qhov ci ntsa iab, tag nrho kub hnyiab, thiab kub siab tshaj plaws. Yog li ntawd, thaum lub match stick yog sai sai flattened rau hauv lub nplaim taws thiab tshem tawm tom qab li 1 vib nas this, lub match stick kov cov nplaim sab nraud tig dub ua ntej. Thaum lub sijhawm tshuab lub tswm ciab, koj tuaj yeem pom cov pa luam yeeb dawb, nrog rau qhov kub hnyiab los ua kom pom cov pa luam yeeb dawb, tuaj yeem rov ua dua lub tswm ciab, yog li nws tuaj yeem ua pov thawj tias cov pa luam yeeb dawb yog cov khoom me me uas tsim los ntawm paraffin. vapor. Thaum lub tswm ciab kub hnyiab, cov khoom ntawm kev hlawv yog carbon dioxide thiab dej. Kev qhia tshuaj: C25H52 + O2 (lit) CO2 + H2O. Qhov tshwm sim kub hnyiab hauv lub raj mis oxygen yog cov nplaim taws ci dawb, tso cua sov, thiab cov dej pos huab ntawm phab ntsa ntawm lub raj mis.
Tswv yim - Shijiazhuang Zhongya Candles Co., Ltd
Post lub sij hawm: Aug-04-2023