E904 Shellac Cov

Shellac (Shellac, E904) - glazier. Cov khoom siv ntuj tsim los ntawm cov kab lacworm (Laccifer lacca), cov kab mob cab ntawm qee qhov chaw sov thiab cov ntoo nyob rau hauv Is Nrias teb thiab cov teb chaws Es Xias Qab Teb (Croton laccifera thiab lwm tus).

Shellac yog siv rau hauv kev tsim cov lacquers, cov ntaub ntawv rwb thaiv tsev thiab hauv kev yees duab. Ua ntej invention ntawm vinyl nyob rau hauv 1938, shellac tau siv rau zus tau tej cov ntaub ntawv.

Shellac - lo lus no nyob rau hauv ntau tus neeg yog txuam nrog manicure txheej txheem. Qhov tseeb, cov khoom, txawm hais tias muaj feem xyuam rau cov tshuaj pleev ib ce zoo nkauj rau cov rau tes, paub raws li txoj cai E904 hauv kev faib tawm thoob ntiaj teb ntawm cov khoom noj ntxiv, thiab hais txog cov khoom siv tshuaj tua hluav taws thiab glazing siv hauv kev lag luam khoom noj. Lub ci ci icing ntawm cov khoom qab zib, dragees, lollipops, chocolate thiab txiv hmab txiv ntoo, feem ntau tshuav nws cov tsos rau cov khoom noj shellac. Lwm lub npe ntawm cov tshuaj ntxiv yog sticklak, gummilak resin lossis stocklak, thiab ib qho ntawm qhov zoo uas nws tau txais txiaj ntsig los ntawm cov tuam txhab khoom noj khoom haus yog nws lub hauv paus chiv keeb.

Kev piav qhia ntawm SHELLAC E904

Shellac E904 yog ib qho amphora granular cob, uas belongs rau pawg ntawm cov khoom noj additives: anti-flaming thiab glazing neeg sawv cev. Cov resin muaj lub hauv paus chiv keeb thiab raug tso cai. Nws yog siv ob qho tib si hauv kev lag luam khoom noj thiab hauv tshuaj, cosmetology thiab kev tsim kho. Cov tsho sab saum toj nrog E904 yog cov tiv taus av, plua plav, khawb thiab teeb. Lub ntuj xim ntawm shellac muab cov rooj tog zaum zoo li monarchic antique.

Txoj kev tau txais Shellac E904

Shellac yog cov khoom pov tseg ntawm cov cab. Qhov chaw nyob ntawm kab yog Thaib thiab Is Nrias teb. Cov worms nyob ntawm tsob ntoo thiab pub rau lawv cov kua txiv hmab txiv ntoo. Cov khoom siv rov ua dua yog tso tawm ntawm daim tawv nqaij pores. Qhov no yog cov khoom siv raw kom tau txais E904 additive.Raw cov ntaub ntawv yog cov txheej txheem, uas nyob ntawm qhov kawg ntawm cov khoom lag luam. Resin tuaj yeem muag hauv daim ntawv qhuav. Nws yog flakes los yog pebbles. Kuj tseem muaj yog kua shellac. Yuav kom tau txais nws, cov resin yog yaj hauv ethyl cawv.

Cov khoom ntawm E904, tshuaj lom neeg yam ntxwv thiab cov txheej txheem ntau lawm

Shellac zaub mov additive structurally sawv cev cov tebchaw thiab esters ntawm aromatic thiab fatty hydroxy acids - auretic, shellolic thiab lwm yam. Cov muaj pes tsawg leeg muaj lactones, pigments thiab shellac ciab. Cov khoom xyaw tseem ceeb (resin) yog 60-80% ntawm E904 additive.

Cov khoom no feem ntau nkag mus rau hauv cov khoom ntawm flakes uas tsuas yog ob peb millimeters tuab. Shellac tsis yaj nyob rau hauv dej, rog, acetone thiab ethers. Nws muaj zoo solubility hauv alkalis, aliphatic cawv, nruab nrab solubility hauv benzene, ethanol.

Lub melting point ntawm cov khoom yog 80 degrees Celsius. Ntxiv nrog rau cov dej tsis kam, nws kuj muaj kev tiv thaiv rau lub teeb raug, nrog rau cov hluav taws xob insulating nyhuv.

Thawj qhov hais txog kev siv cov khoom siv no rov qab rau xyoo pua 1st BC. Is Nrias teb thiab cov tebchaws nyob rau sab hnub tuaj Asia - thaj chaw ntawm cov kab hu ua Laccifer lacca (lacquer kab), zoo li cov kab tsuag.

Cov kab no pub rau tsob ntoo resin thiab kua txiv hmab txiv ntoo uas secreted los ntawm cov ceg, tawv ntoo thiab nplooj ntoo. Vim lub digestive txheej txheem ntawm worms, cov tshuaj uas lawv noj tig mus rau hauv resin, uas cov kab tso rau ntawm ceg thiab bark ntawm ntoo. Cov resin los yog lacquer dries los tsim ib lub crust uas yog sau rau kev ua ntxiv.

Ua ntej, cov khoom siv raw yog yaj nrog sodium carbonate - nyob rau hauv txoj kev no yav tom ntej shellac yog ntxuav ntawm ntau yam organic impurities (kab hais, nplooj).

Lub resulting tshuaj yog bleached siv sodium hypochlorous acid thiab ces qhuav.

Txhawm rau tshem tawm cov quav ciab hauv cov tshuaj ntxiv, thaum kawg nws raug rau cov tshuaj tiv thaiv nrog cov tshuaj tsis muaj zog ntawm sulfuric acid thiab cov quav ciab insoluble yog lim tawm. Yog li ntawd, ib tug bleached shellac purified los ntawm wax yog tau.

Ntxiv nrog rau cov xim dawb, nws tuaj yeem yog txiv kab ntxwv lossis lub teeb xim av. Nws kuj tseem tuaj yeem ua kom muaj cov xim tsis muaj xim ntxiv.

Lub hom phiaj thev naus laus zis ntawm E904 additive yog tsim cov txheej txheej glazing, kev tiv thaiv lossis txo qis ntawm kev siv ua npuas ncauj, thiab kev tiv thaiv ntawm cov nplaum glazing rau ib leeg.

Cov khoom siv li cas hauv kev lag luam

Hauv kev lag luam tshuaj, E904 yog siv los ua xim, polishes, varnishes rau cov twj paj nruag ntoo thiab rooj tog. Ua ntej invention ntawm vinyl nyob rau hauv lub 40s ntawm lub xyoo pua xeem, cov tivthaiv tau siv nyob rau hauv tus txheej txheem ntawm kev ua cov ntaub ntawv.

Shellac yog lub hauv paus rau polyethylene zaj duab xis thiab aluminium ntawv ci, yog siv nyob rau hauv textile kev lag luam kom stiffen xav thiab zoo li fabrics, thiab kuj yog ib feem ntawm hluav taws xob insulating varnishes rau impregnating coils ntawm cov khoom siv hluav taws xob thiab ua cov khoom hluav taws xob.

Shellac yog ib feem ntawm cov tshuaj zawv plaub hau thiab tshuaj zawv plaub hau, ntau yam khoom siv styling ntev, nrog rau cov mascara waterproof.

Kev lag luam tshuaj pleev ib ce tsis ua tiav yam tsis muaj shellac: cov tuam txhab tau txais txiaj ntsig zoo heev rau nws cov dej-tiv thaiv cov khoom, qhov kub thiab txias thiab muaj peev xwm los tsim qhov tsim nyog kev ntxhib los mos ntawm cov khoom.

Txij li xyoo 2010, kev tsim khoom loj ntawm cov tshuaj tiv thaiv gel polish pib hauv Tebchaws Meskas, uas muaj cov tshuaj ntxiv E904, feem, nws tau hu ua "Shellac". Cov txheej yog qhov txawv los ntawm nws lub zog tshwj xeeb, xim saturation thiab muaj peev xwm ua kom cov ntsia hlau phaj.

Nws kuj tseem ntxiv rau cov khoom noj khoom haus thiab cov khoom siv tiv thaiv kab mob rau qee hom cheese.

Nyob rau hauv daim ntawv ntawm glazing los yog defoaming tivthaiv, E904 muaj nyob rau hauv xws li cov khoom noj:

• txiv hmab txiv ntoo tshiab (citrus txiv hmab txiv ntoo, txiv duaj, txiv duaj, txiv apples, melons - rau kev kho mob saum npoo);
• khoom qab zib, lollipops, dragees, chocolate;
• hmoov cov khoom nrog icing;
• nplej kas fes;
• zom cov pos hniav;
• marzipan loj.

Ntxiv nrog rau kev tsim khoom noj khoom haus, shellac kuj tau pom nws daim ntawv thov hauv kev lag luam kws tshuaj - ua ib txheej glazing rau qee cov tshuaj hauv cov ntsiav tshuaj thiab dragees.

shellac tuaj yeem cuam tshuam rau tib neeg kev noj qab haus huv

Tsis muaj lus teb meej hauv kev pom zoo lossis tawm tsam kev siv shellac hauv cov zaub mov niaj hnub no.

Cov tshuaj tau kawm nyob rau hauv lub chaw kuaj mob, thiab tsis muaj ntaub ntawv hais txog nws muaj peev xwm toxicity los yog oncogenicity tau tshaj tawm. Qhov txaus ntshai tsuas yog nws tuaj yeem ua rau muaj kev tsis haum tshuaj.

Qee qhov xwm txheej ntawm tus kheej intolerance, cov khoom noj thiab tshuaj pleev ib ce nrog cov khoom siv hauv cov khoom xyaw tuaj yeem ua rau khaus thiab khaus tawv nqaij.

Khoom noj khoom haus E904 tsis nqus los ntawm lub cev nyob rau hauv txhua txoj kev thiab raug tshem tawm los ntawm nws tsis hloov.

Cov cai ntim thiab khaws cia

Shellac tuaj yeem thauj thiab khaws cia rau hauv ntau lub thawv, piv txwv li, jute lossis cov hnab hluavtaws (cov ntaub ntawv yuav tsum tau pom zoo rau kev sib cuag nrog cov khoom noj), hauv cov thawv ntoo lossis cov thawv ntawv, thawv, nruas.

Hauv khw muag khoom, cov khoom muaj nyob hauv cov thawv ntawv lossis hauv ntim yas.

E904 additive yog cais los ntawm lub ntiaj teb no zej zog raws li kev nyab xeeb. Nws raug tso cai siv ntau lub xeev: hauv Asmeskas, Canada, EU lub tebchaws, Russia. Qhov nrov Ritter kev ua si nawv qhob noom xim kasfes nyob rau hauv nws muaj pes tsawg leeg muaj shellac raws li ib tug glazing tivthaiv.

Txij li cov khoom yog los ntawm ntuj tsim, nws muaj ob peb tus neeg tawm tsam: feem ntau, nws siv los ua ib feem ntawm cov khoom noj khoom haus tsis ua rau muaj kev sib cav.

Kev kawm txog cov teebmeem ntawm shellac rau tib neeg noj qab haus huv tseem niaj hnub no, tab sis tam sim no tag nrho cov kev tshawb fawb qhia tias cov khoom noj ntxiv E904 tsis muaj txiaj ntsig, tab sis tsis ua rau lub cev.