2024 Tus sau: Priscilla Miln | [email protected]. Kawg hloov kho: 2024-02-18 01:34
Paraffin - yog dab tsi? Cov khoom no paub zoo rau peb txhua tus. Tsawg kawg ib zaug hauv peb lub neej peb yuav tsum tau nrog nws. Nws yog dav siv nyob rau hauv ntau yam kev lag luam - tshuaj, khoom noj khoom haus, thiab hluav taws xob engineering. Cia peb sim nkag siab txog cov khoom ntawm cov khoom no thiab nws hom.
Paraffin - yog dab tsi?
Cov khoom siv saum toj no yog cov khoom sib xyaw ua ke ntawm high-molecular hydrocarbons ntawm qhov txwv. Cov muaj pes tsawg leeg ntawm paraffin kuj muaj xws li cyclic hydrocarbons, uas tau los ntawm ozocerite thiab roj.
Purified paraffin - yog dab tsi? Nws muaj cov yam ntxwv hauv qab no:
- khoom tsis muaj xim;
- roj rau kov;
- tsis muaj ntxhiab;
- tsis saj;
- dissolve zoo hauv cov roj ntxhia thiab cov kuab tshuaj organic;
- insoluble hauv dej thiab cawv.
Tsis zoo ua kom zoo nkauj paraffin wax yog ib yam khoom uas muaj xim av lossis xim daj thiab tsaus nti thaum raug teeb.
Cov khoom saum toj no muaj kev tiv thaiv zoo rauKev txiav txim ntawm cov hauv paus thiab acids, oxidizing tus neeg sawv cev, alkali hlau thiab halogens.
Tseem ntawm paraffin
Cov khoom no tau muab faib ua cov paraffins hauv qab no:
- kev ua kom zoo heev (qib A thiab B);
- unpeeled (matchstick);
- kev ua kom huv (qib G thiab D);
- kho mob.
Cov yam ntxwv tseem ceeb ntawm paraffin yog:
- melting kub - 50 degrees Celsius (tsis qis dua);
- Cov ntsiab lus roj yog 0.6% yam tsawg kawg nkaus thiab 2.3% siab tshaj (tsis siab dua).
Ua los ntawm paraffin sib tw. Nws cov ntsiab lus melting yuav tsum yog 42 degrees Celsius, tab sis nyob rau hauv tsis muaj cov ntaub ntawv qis dua, thiab cov roj cov ntsiab lus tso cai tsis pub siab tshaj 5%.
Daim ntawv thov ntawm paraffin
Cov khoom lag luam saum toj no tau siv dav hauv kev lag luam hauv qab no:
- printing;
- paper;
- khoom noj khoom haus;
- electrotechnical;
- paint thiab kua roj vanish.
Kuj siv:
- rau kev kho paraffin hauv cosmetology thiab tshuaj;
- like tswm ciab;
- ua lub roj nplua nyeem rau cov khoom txav ua los ntawm cov ntoo;
- ua ke nrog roj av ua raws li cov txheej txheem tiv thaiv corrosion;
- rau kev tsim tawm ntawm Vaseline;
- cov khoom no tau sau npe ua E905 - khoom noj khoom haus ntxiv;
- ua raws li lub roj nplua nyeem rau kev caij ski snowboard;
- siv hauv engineering thiab nuclear physics (slows neurons thiab yog "generator" ntawm protons).
Tsis tas li ntawd, paraffin nquag siv hauv xov tooj cua engineering. Nws yog siv nyob rau hauv cov xwm txheej uas muaj hluav taws xob muaj zog, tsis tshua muaj nqi, tsawg kawg nkaus AC poob thiab muaj peev xwm tso tawm sai sai rau lub potting nrog ib qho yooj yim cua sov txoj kev xav tau.
Dab tsi yog qhov sib txawv ntawm cov roj saum toj no thiab siv quav ciab?
Wax yog ib qho sib xyaw ntawm cov khoom esters uas tsim fatty acids thiab ntau dua cawv (siab molecular hnyav).
Dab tsi yog qhov txawv ntawm cov tshuaj saum toj no? Nws yuav tsum raug sau tseg tias cov khoom uas tsis hlawv txhua, tab sis tsuas yog melts, yog, ntawm chav kawm, siv quav ciab. Paraffin, ntawm qhov tsis sib xws, hlawv tag nrho.
Wax muaj xim daj-xim av. Paraffin tsuas yog dawb xwb. Cov neeg tsim khoom tau txais tag nrho nws lwm qhov ntxoov ntxoo los ntawm kev ntxiv dyes rau nws.
Natural wax yog ib yam khoom ntuj tsim, ib puag ncig tus phooj ywg. Paraffin tau txais los ntawm cov khoom siv roj av, yog li nws yog cov khoom siv hluavtaws.
Wax hauv nws cov khoom feem ntau zoo li plasticine. Nws yog yooj yim heev, mos heev, yas heev. Paraffin, ntawm qhov tod tes, crumbles ntau dhau thaum txiav.
Yuav siv cov tshuaj paraffin hauv tsev li cas?
Cov khoom no yog siv rau kev kho paraffin. Qhov no yog ib txoj kev zoo heev thiab ntuj tsim uas muab lub sijhawm los tshem tawm qhov tsis xws luag thiab tsis zoo ntawm daim tawv nqaij thiab tsis yog xwb. Cov txheej txheem kev kho paraffin yog raws li kev siv cov yeeb yaj kiab tshwj xeeb ua los ntawmcov khoom saum toj no, uas tsim cov nyhuv tsev cog khoom.
Paraffin hauv tsev tuaj yeem siv rau:
- tawv nqaij dawb;
- tshem tawm ob lub puab tsaig thiab gravitational ptosis;
- tiv thaiv kab nrib pleb thiab qhuav;
- ntxuav daim tawv nqaij, nws rejuvenation.
Kev kho Paraffin rau tes hauv tsev yog, tau kawg, tsis yooj yim ua. Txhawm rau ua qhov no, koj yuav tsum tau yuav cov tshuaj pleev ib ce kom huv si. Cov kws tshaj lij kos xim rau qhov tseeb tias cov neeg ua xua yuav tsum tau yuav cov khoom no uas muaj cov roj txiv duaj.
Paraffin yuav tsum tau muab tso rau hauv lub xeev ua kua. Ua li no, siv txoj kev da dej. Tom qab ntawd nws yog ib qho tseem ceeb uas yuav tsum tau txhuam tes nrog txhuam los yog, piv txwv li, ib qho tshwj xeeb mitten. Tom ntej no, koj yuav tsum txo koj txhais tes mus rau hauv cov kua paraffin thiab tshem tawm tam sim ntawd. Rov ua qhov kev txiav txim no tom qab 10 vib nas this. Nws yog ib qho tsim nyog kom nyias nyias "cov hnab looj tes" ua rau ntawm tes. Tom qab ntawd qhwv koj txhais tes nrog zaj duab xis los yog, piv txwv li, ib lub hnab yas thiab tuav tsawg kawg 20 feeb.
Tom qab ntawd tshem tawm cov paraffin. Cov kws tshaj lij tsis pom zoo kom rov siv cov khoom no. Tom qab cov txheej txheem, daim tawv nqaij moisturizing cream yuav tsum tau siv rau ob txhais tes.
Paraffin yog ib yam khoom zoo heev uas tau pom nws txoj hauv kev mus rau ntau qhov chaw.
Pom zoo:
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