Maleic Anhydride: Ib qho khoom siv tseem ceeb ntawm cov tshuaj lom neeg organic uas tsav tsheb kev loj hlob thoob plaws ntau qhov chaw
Cov Ntawv Thov Tseem Ceeb
Hauv kev lag luam tshuaj lom neeg, maleic anhydride yog cov khoom siv tseem ceeb rau kev tsim cov unsaturated polyester resins (UPR). Cov resins no muaj cov khoom siv kho tshuab zoo heev, tiv taus tshuaj lom neeg, thiab tiv taus huab cua thiab siv dav hauv kev tsim cov iav fiber-reinforced plastics (GFRP), xws li nkoj, cov khoom siv tsheb, thiab cov hniav cua turbine. Tsis tas li ntawd, maleic anhydride tuaj yeem siv los ua cov alkyd resins, uas muaj qhov ci ntsa iab thiab ruaj khov thiab siv dav hauv kev lag luam coatings thiab inks.
Hauv kev lag luam yas, maleic anhydride yog siv los tsim cov yas maleic anhydride-modified. Los ntawm kev sib xyaw nrog cov monomers sib txawv, maleic anhydride tuaj yeem txhim kho cov khoom ntawm cov yas, xws li kev ua kom tsis txhob kub thiab lub zog kho tshuab. Piv txwv li, maleic anhydride grafted polystyrene, copolymerized nrog styrene, muaj kev tiv thaiv kub thiab cov khoom kho tshuab zoo heev thiab siv dav hauv kev lag luam hluav taws xob thiab tsheb.
Hauv kev lag luam roj hmab, maleic anhydride siv los tsim cov roj hmab ntxiv. Nws tuaj yeem ua rau cov roj hmab sib txuas ua ke, ua rau cov roj hmab tiv taus cua sov thiab hnav tsis kam. Maleic anhydride kuj tseem siv los tsim cov roj hmab vulcanizing agents thiab cov neeg sawv cev tiv thaiv kev laus, ua rau cov khoom siv roj hmab ntev dua.
Hauv kev lag luam tshuaj tsw qab thiab tshuaj, maleic anhydride yog siv ua ib qho nruab nrab hauv kev tsim cov organic. Nws tuaj yeem siv los tsim ntau yam tshuaj tsw qab, xws li diethyl maleate, uas yog siv dav hauv tshuaj tsw qab thiab tshuaj pleev ib ce. Tsis tas li ntawd, maleic anhydride tuaj yeem siv los tsim qee yam tshuaj nruab nrab, xws li cov derivatives ntawm maleic anhydride, rau kev tsim cov tshuaj tua kab mob thiab cov tshuaj kho mob plawv.
Hauv kev kho dej, maleic anhydride siv los tsim cov tshuaj kho dej. Nws tuaj yeem cuam tshuam nrog calcium thiab magnesium ions hauv dej los tsim cov dej tsis yaj, yog li txo qhov tawv ntawm dej. Maleic anhydride kuj tseem siv tau los tsim cov tshuaj tiv thaiv xeb thiab cov tshuaj tiv thaiv nplai kom tiv thaiv kev xeb thiab nplai hauv cov kab ke dej.
Txawm hais tias nws siv tau ntau yam los xij, maleic anhydride yog acidic thiab corrosive, thiab nws txoj kev siv thiab kev khaws cia yuav tsum tau ceev faj txog kev nyab xeeb. Maleic anhydride yooj yim nqus cov dej noo hauv cov chaw noo noo, yog li nws yuav tsum tau khaws cia rau hauv lub thawv kaw. Tsis tas li ntawd, cov tshuaj ntawm maleic anhydride yog qee yam corrosive, thiab cov khoom siv tiv thaiv tsim nyog yuav tsum tau hnav thaum siv kom tsis txhob kov cov tawv nqaij thiab qhov muag. Hauv kev tsim khoom lag luam, kev siv maleic anhydride feem ntau tshwm sim hauv cov kab ke kaw kom txo qis kev cuam tshuam rau ib puag ncig.
Cov Lus Qhia Tshwj Xeeb
| Lub Npe Khoom | Maleic Anhydride | |||||||||
| Cov Qauv Tshuaj | C4H2O3 | |||||||||
| Qhov Hnyav Molecular | 98.06 g/mol | |||||||||
| Qhov tsos | Cov briquettes dawb | |||||||||
| Qhov Kub Yaj | 52.8°C | |||||||||
| Kub Kub | 202°C | |||||||||
| Qhov Ceev | 1.48 g/cm³ | |||||||||
| CAS TSIS MUAJ | 108-31-6 | |||||||||
| Tus lej HS | 2917140000 | |||||||||
| EINECS TSIS MUAJ | 203-571-6 | |||||||||
| Daim Ntawv Thov | Siv rau hauv cov tshuaj polyester tsis muaj roj, tshuaj pleev xim, tshuaj tua kab | |||||||||
Daim Ntawv Tswj Xyuas Zoo
| Lub Npe Khoom | Maleic Anhydride | ||||||
| YAM KHOOM | TUS NQI TXUJ CI (%) | TUS NQI XEEM (%) | |||||
| Qhov tsos | Cov briquettes dawb | Cov briquettes dawb | |||||
| Kev Huv Si (los ntawm MA) | 99.5WT% feeb | 99.72WT% | |||||
| Xim yaj | 25APHA Max | 15APHA | |||||
| Chaw Kho Kom Ruaj Khoov | 52.5 ℃ Yam tsawg kawg nkaus | 52.6 ℃ | |||||
| Tshauv | 0.005WT% Max | ||||||
| Hlau | 3PPM Siab Tshaj | 0.32PPM | |||||
Hauv kev xaus lus
Hauv kev xaus lus, maleic anhydride, ua ib yam khoom siv organic tseem ceeb, ua lub luag haujlwm tseem ceeb hauv ntau yam lag luam. Nws tsis yog tsuas yog txhim kho kev ua tau zoo ntawm cov khoom thiab qhov zoo xwb tab sis kuj txhawb nqa kev txhim kho ntawm kev lag luam niaj hnub. Nrog rau kev nce qib ntawm thev naus laus zis tas mus li, cov kev thov rau maleic anhydride yuav dav dua.