Thiab nws yog txhua yam hais txog nws: roj av jelly

Vaseline tau tsim nyob rau xyoo 19th thiab tau ua haujlwm rau ib tug neeg los ntawm kev ntseeg thiab qhov tseeb. Nyob rau hauv qhov tseeb, qhov no kev kho yog ib tug sib tov ntawm kua thiab tau carbohydrates zoo. Nws yog muab los ntawm txoj kev los sib txuas cov roj (tshwj tsis yog castor ib leeg) nrog cov roj carbon monoxide. Tom qab ntawd cov khoom yog kom huv si. Rau qhov no, sulfuric acid los yog ib qib tshwj xeeb ntawm cov av nplaum nrog cov nyhuv dej dawb feem ntau yog siv.

Outwardly, roj av jelly yog xim daj los sis grey-xim av. Nws muaj ib tug creamy sheen thiab yog tsiag ntawv los ntawm ib tug tsis muaj tsis hnov tsw thiab saj.

Hom Vaseline

Peb paub los ntawm Vaseline los ntawm pog cov khoom siv xub thawj, nws hloov tawm, tsis yog tib hom ntawm nws cov hom. Rau hnub tim, muaj ob peb hom hom khoom no:

1. Cosmetic Vaseline.
2. Kev kho mob Vaseline.
3. Kev kawm roj av.

Nov yog qhov kawg peb mam li tham ntau dua.

Nta thiab cov khoom ntawm cov khoom

Vaseline technical (GOST 38.0156-79) yog yam tsis tu ncua. Tias yog vim li cas nws muaj ib tug peculiar ntxoov ntxoo - brownish. Tsis tas li ntawd, kev tsim roj ntsha tawg yog ua cim los ntawm qhov tsw ntxhiab tsw (nrog sau ntawv ntawm kerosene). Qhov homogeneous loj, reminiscent ntawm ointment, yog feem ntau siv raws li ib tug lubricant. Nyob rau hauv nws muaj pes tsawg leeg, nws muaj additives tiv thaiv corrosion thiab txhawb zoo dua adhesion mus rau saum npoo raug kho.

Nws yuav tsum nco ntsoov tias thaum ua hauj lwm nrog hom vas vas nthiv, koj yuav tsum tsis txhob sib cuag nrog daim tawv nqaij. Vim nws tuaj yeem ua rau kom khaus thiab khaus. Tsis tas li ntawd, tshem tawm cov kev kho mob yuav tsis yooj yim li, vim hais tias nws xyaum tsis yaj hauv dej.

Ntawm cov khoom tseem ceeb uas muaj cov roj petrolatum, koj tuaj yeem pom cov hauv qab no:

• Tsis kam mus acids thiab alkalis. Raws li pom los ntawm kev tshawb fawb, qhov kev zoo tshuaj no tuaj yeem tiv taus lawv li 3 teev.
• Vaseline kev tsis yog nyob rau hauv dej thiab glycerin, nws yog qhov nyuaj rau dissolve hauv cawv, tab sis ether, roj thiab chloroform yog cov tshuaj zoo tshaj plaws rau cov khoom no.
• Nws muaj cov khoom ntub noo, raws li qhov tshwm sim ntawm qhov uas nws zoo kawg nkaus tiv thaiv kev ua haujlwm ntawm qhov xeb.
• Nws muaj qhov siab ua kom zoo. Ua tau kom muaj peevxwm kub tau -40 txog +45 degrees.

Vaseline kev: daim ntawv thov kev npaj

Qhov cuab yeej no yog siv dav hauv ntau qhov chaw ntawm peb lub neej.

1. Lawv feem ntau impregnate ntawv thiab ntaub nyob rau hauv lub chaw ua khoom ntawm hluav taws xob engineering.
2. Nws yog siv rau kev tsim cov lubricants uas txawv hauv cov khoom siv thiab yog cov uas ua rau oxidants. Piv txwv, nws yuav tiv thaiv tau oxidation ntawm lub roj teeb terminals.
3. Cov khoom no yog siv nyob rau hauv lub khob kev lag luam.
4. Nws yog feem ntau ntxiv raws li ib tug softener nyob rau hauv cov roj hmab txuas.
5. Vaseline npog cov txheej txheem sab nrauv ntawm cov mechanisms, yog hais tias lawv yuav tsum tau thauj, los yog thaum muaj sij hawm ntev cia.
6. Ntau zaus nws yog siv rau hauv cov khoom siv ntawm cov ntaub ntawv uas yog npaj rau kev rwb thaiv tsev.

Raws li koj tau pom, kev tsim roj petrolatum, tus nqi ntawm cov yoojyim 2120 Roses rau 25 kg, muaj peev xwm ua tau zoo ntau lub zog tsis muaj txheej txheem kev lag luam ruaj khov tsis yooj yim sua.