paraffin
Cov lus txhais ua lus Askiv
paraffin
cov khoom siv tshuaj lom neeg
CAS: 8002-74-2 EINECS:232-315-6 Qhov Ceev: 0.9 g/cm³ Qhov Ceev Sib Piv: 0.88 ~ 0.915
Kev taw qhia txog khoom thiab nta
Paraffin wax, tseem hu ua crystal wax, yog ib hom soluble hauv roj av, carbon disulfide, xylene, ether, benzene, chloroform, carbon tetrachloride, naphtha thiab lwm yam tshuaj uas tsis yog polar, insoluble hauv dej thiab methanol thiab lwm yam tshuaj polar.
siv
Vim nws muaj roj ntau, paraffin nyoos feem ntau yog siv rau hauv kev tsim cov ntais ntawv, fiberboard thiab canvas. Tom qab ntxiv POLYOLEFIN ADDITIVE rau paraffin, nws qhov melting point nce, nws cov adhesion thiab elasticity nce, thiab nws yog dav siv rau hauv kev tsim cov ntawv qhwv uas tsis muaj dej noo thiab tsis muaj dej, cardboard, txheej txheej ntawm qee cov ntaub thiab tswm ciab.
Cov ntawv uas muab tso rau hauv cov roj paraffin tuaj yeem npaj tau nrog kev ua haujlwm zoo ntawm ntau yam ntawv roj, tuaj yeem siv rau hauv cov khoom noj, tshuaj thiab lwm yam ntim khoom, hlau xeb thiab kev lag luam luam ntawv; Thaum ntxiv paraffin rau hauv cov xov paj rwb, nws tuaj yeem ua rau cov ntaub mos, du thiab ywj. Paraffin kuj tseem tuaj yeem ua cov tshuaj ntxuav tes, emulsifier, dispersant, plasticizer, roj, thiab lwm yam.
Cov paraffin uas tau ua kom tiav tag nrho thiab cov paraffin uas tau ua kom tiav ib nrab yog siv dav, feem ntau yog cov khoom siv thiab cov ntaub ntawv ntim khoom noj, tshuaj noj thiab qee yam khoom lag luam (xws li ntawv ciab, cwj mem xim, tswm ciab thiab ntawv carbon), ua cov ntaub ntawv hnav khaub ncaws rau cov thawv ci, rau kev khaws cia txiv hmab txiv ntoo [3], rau kev rwb thaiv tsev ntawm cov khoom siv hluav taws xob, thiab rau kev txhim kho kev tiv thaiv kev laus thiab kev ywj pheej ntawm roj hmab [4]. Nws kuj tseem siv tau rau kev oxidation los tsim cov roj fatty acids.
Ua ib hom khoom siv khaws cia lub zog cua sov latent, paraffin muaj qhov zoo ntawm qhov kub latent loj ntawm kev hloov pauv theem, kev hloov pauv me me thaum lub sijhawm hloov pauv khoom-kua, kev ruaj khov thermal zoo, tsis muaj qhov tshwm sim tsis zoo, tus nqi qis thiab lwm yam. Tsis tas li ntawd, kev txhim kho ntawm kev tsav dav hlau, aerospace, microelectronics thiab optoelectronics thev naus laus zis feem ntau xav tau tias ntau qhov kub dissipated tsim thaum lub sijhawm ua haujlwm ntawm cov khoom siv hluav taws xob siab tsuas yog tuaj yeem dissipated hauv thaj chaw dissipation cua sov tsawg thiab lub sijhawm luv luv, thaum cov khoom siv hloov pauv theem qis qis tuaj yeem ncav cuag qhov melting piv rau cov khoom siv hloov pauv theem siab melting, thiab siv tag nrho cov cua sov latent kom ua tiav kev tswj kub. Lub sijhawm teb thermal luv luv ntawm paraffin tau siv dav hauv ntau qhov chaw xws li kev tsav dav hlau, aerospace, microelectronics thiab lwm yam tshuab high-tech nrog rau kev txuag hluav taws xob hauv tsev. [5]
GB 2760-96 tso cai siv cov khoom siv qab zib ua los ntawm cov kua nplaum, qhov txwv yog 50.0g/kg. Txawv teb chaws kuj siv rau kev tsim cov ntawv mov nplaum, qhov ntau npaum li cas ntawm 6g/kg. Tsis tas li ntawd, nws kuj siv dav hauv cov khoom ntim khoom noj, xws li cov khoom uas tsis lo, tsis nplaum thiab tsis muaj roj. Nws yog qhov tsim nyog rau cov khoom noj uas zom cov kua nplaum, cov kua nplaum thiab cov roj kub zoo rau tshuaj, nrog rau cov khoom siv thauj cua sov, rhuav cov pwm, nias cov ntsiav tshuaj, txhuam thiab lwm yam roj nplaum uas sib cuag ncaj qha nrog cov khoom noj thiab tshuaj (ua los ntawm cov roj nplaum lossis roj shale los ntawm kev nias txias thiab lwm txoj kev).
pob khoom thiab kev thauj mus los
B. Cov khoom no siv tau,,25KG, 200KG, 1000KGBAERRLS。
C. Khaws cia rau hauv qhov chaw txias, qhuav thiab muaj cua nkag hauv tsev. Yuav tsum kaw cov thawv kom nruj tom qab siv txhua zaus ua ntej siv.
D. Cov khoom no yuav tsum tau kaw zoo thaum lub sijhawm thauj mus los kom tiv thaiv cov dej noo, alkali thiab acid muaj zog, nag thiab lwm yam tsis huv los ntawm kev sib tov.
