Methylcellulose

Methyl cellulose, yakapfupikiswa seMC, inozivikanwawo se cellulose methyl ether, is nonionic cellulose ether. Iine chitarisiko chechena, chiyero cheyero kana chakareruka grey poda, granular kana fibrous, isina kunhuwa, isinganakidze, isina chepfu uye isingatsamwire, hygroscopic.

Methylcellulose inonyungudika mu glacial acetic acid, asi isinganyunguriki muorganic solvents senge ethanol, ether, acetone, uye chloroform. Methylcellulose ine yakasarudzika thermal gel zvivakwa. Kana yakanyungudutswa mumvura inopisa pamusoro pe50 ° C, inogona Kukurumidza kupararira uye inoputika kuita gel. Kana tembiricha yemvura ichidzika pasi pe50°C, inonyungudika mumvura kuita mvura ine mvura. Aqueous solutions uye gel mafomu anogona kudyidzana.

Kugadzirira kwemethyl cellulose kunoshandisa cellulose yechisikigo yakadai sedonje pulp uye pulp yehuni semidziyo, uye inobatwa nealkali (senge sodium hydroxide, nezvimwewo) kuti iwane alkali cellulose, uyezve etherified nekuwedzera methyl chloride. Kuita pane imwe tembiricha, mushure mekugeza, neutralization, kupera mvura mumuviri, kuomesa uye mamwe maitiro, zvinoenderana nekuchena kwechigadzirwa uye zvemukati zvemukati, methyl cellulose inogona kukamurwa kuita mishonga giredhi methyl cellulose, chikafu giredhi methyl cellulose, general-chinangwa methyl cellulose uye zvimwe zvigadzirwa. .

Methylcellulose inopikisa acids uye alkalis, mafuta, kupisa, microorganisms uye chiedza. Iine kukora kwakanaka, kugadzira firimu, kuchengetedza mvura, emulsifying, kunyorova, kuparadzira, uye kunamatira zvinhu.

Methylcellulose ine huwandu hwakasiyana hwemashandisirwo ezasi, kubva kumachira, ingi, zvinonamira kune machira, kudhinda uye dhayi kusvika kumushonga uye kugadzira chikafu. Maindasitiri mazhinji ane zvinodiwa zvekushandisa zvezvigadzirwa uye ane nzvimbo yakakura yekusimudzira. Mushure mekuenderera mberi kwenguva yakareba, indasitiri yemethyl cellulose yenyika yakagadzira imwe chiyero, uye huwandu hwechigadzirwa huri kuramba huchiwedzera kukwana, asi hunofanirwa kuve hwakakwana maererano nehukuru uye budiriro yakazara!