Ndezvipi zvinhu zvine chekuita ne carboxymethyl cellulose?

Ndezvipi zvinhu zvine chekuita ne carboxymethyl cellulose?

Mhinduro:Carboxymethyl celluloseine hunhu hwakasiyana nekuda kwemadhigirii ayo akasiyana ekutsiva. Dhigirii rekutsiva, rinozivikanwawo sedhigirii re etherification, zvinoreva huwandu hweavhareji yeH mumapoka matatu eOH hydroxyl akatsiviwa neCH2COONa. Kana mapoka matatu ehydroxyl ari pa ring yakavakirwa pa cellulose aine 0.4 H muboka rehydroxyl rakatsiviwa ne carboxymethyl, rinogona kunyungudutswa mumvura. Panguva ino, inonzi 0.4 substitution degree kana medium substitution degree (substitution degree 0.4-1.2).

Hunhu hwe carboxymethyl cellulose:

(1) Ihupfu huchena (kana kuti hura hwakakora, hune fibrous), hahuna kunaka, hahukuvadzi, hunonyungudika nyore nyore mumvura, uye hunoita chimiro chinonamira chakajeka, uye mushonga wacho hauna kwaunorerekera kana kuti une alkaline zvishoma. Une simba rakanaka rekupararira uye kusunga.

(2) Mvura yayo inogona kushandiswa semushonga wemhando yemafuta/mvura uye mhando yemvura/mafuta. Ine simba rekubatanidza mafuta newakisi, uye imushonga wakasimba wekubatanidza.

(3) Kana mvura ikasangana nemunyu wesimbi wakaita se lead acetate, ferric chloride, silver nitrate, stannous chloride, uye potassium dichromate, mvura inogona kunaya. Zvisinei, kunze kwe lead acetate, inogona kunyungudutswa zvakare mu sodium hydroxide solution, uye mvura yakaita se barium, iron nealuminium inonyungudutswa nyore nyore mu 1% ammonium hydroxide solution.

(4) Kana mvura yasangana ne organic acid ne inorganic acid solution, mvura inogona kunaya. Sekureva kweongororo, kana pH yava 2.5, mvura yatanga kunaya. Saka pH 2.5 inogona kutorwa senzvimbo inokosha.

(5) Kune munyu wakaita secalcium, magnesium nemunyu wetafura, hapana mvura inonaya, asi viscosity inofanira kuderedzwa, zvakaita sekuwedzera EDTA kana phosphate nezvimwe zvinhu kudzivirira izvi.

(6) Tembiricha ine simba guru pakupenya kwemvura inobuda mumvura. Kupenya kunodzikirawo kana tembiricha yakwira, uye zvinopesana. Kugadzikana kwekupenya kwemvura inobuda mumvura tembiricha yemumba hakuchinji, asi kupenya kunogona kudzikira zvishoma nezvishoma kana yapiswa pamusoro pe80°C kwenguva yakareba. Kazhinji, kana tembiricha isingapfuure 110°C, kunyangwe tembiricha ikachengetwa kwemaawa matatu, yozotonhodzwa kusvika 25°C, kupenya kunodzokera pakwayo kwekutanga; asi kana tembiricha yapiswa kusvika 120°C kwemaawa maviri, kunyangwe tembiricha yadzorerwa, kupenya kunodzikira ne18.9%.

(7) pH kukosha kuchavewo nemhedzisiro yakati pa viscosity yemvura yayo. Kazhinji, kana pH ye low-viscosity solution ikatsauka kubva kune neutral, viscosity yayo haina zvayakanakira, nepo kune medium-viscosity solution, kana pH yayo ikatsauka kubva kune neutral, viscosity inotanga kudzikira zvishoma nezvishoma; kana pH ye high-viscosity solution ikatsauka kubva kune neutral, viscosity yayo ichadzikira. Kudzikira kukuru.

(8) Inoshanda nemamwe manamati, zvinonyorovesa uye maresini anonyungudika mumvura. Semuenzaniso, inoenderana neglue yemhuka, gum arabic, glycerin uye soluble starch. Inoshandawo negirazi remvura, polyvinyl alcohol, urea-formaldehyde resin, melamine-formaldehyde resin, nezvimwewo, asi zvishoma.

(9) Firimu rinogadzirwa nechiedza cheultraviolet kwemaawa zana harina kusviba kana kuputsika.

(10) Kune mhando nhatu dze viscosity dzekusarudza kubva zvichienderana nekushandiswa. Pa gypsum, shandisa viscosity yepakati (2% mvura ine 300-600mPa·s), kana ukasarudza viscosity yakakwira (1% mhinduro ine 2000mPa·s kana kupfuura), unogona kuishandisa muchiyero chinofanira kuderedzwa zvakakodzera.

(11) Mvura yayo inoshanda semushonga unodzivisa gypsum.

(12) Mabhakitiriya netupukanana hazvina zvazvinoita pahupfu hwayo, asi zvine zvazvinoita pamvura yayo. Mushure mekusvibiswa, viscosity inodonha uye mildew inoonekwa. Kuwedzera huwandu hwakakodzera hwezvinodzivirira pachine nguva kunogona kuchengetedza viscosity yayo uye kudzivirira mildew kwenguva yakareba. Zvinodzivirira zviripo ndeizvi: BIT (1.2-benzisothiazolin-3-one), racebendazim, thiram, chlorothalonil, nezvimwewo. Huwandu hwekuwedzera hunowanikwa mumvura inodziya i0.05% kusvika 0.1%.

Hydroxypropyl methylcellulose inoshanda sei semushonga unochengetedza mvura weanhydrite binder?

Mhinduro: Hydroxypropyl methylcellulose chinhu chinochengetedza mvura chinoshanda zvakanyanya pazvinhu zvinosimbisa gypsum. Nekuwedzera kwehuwandu hwehydroxypropyl methylcellulose. Kuchengetwa kwemvura kwezvinhu zvinosimbisa gypsum kunowedzera nekukurumidza. Kana pasina chinhu chinochengetedza mvura chinowedzerwa, mwero wekuchengetedza mvura wezvinhu zvinosimbisa gypsum cement ungangoita 68%. Kana huwandu hwechinhu chinochengetedza mvura huri 0.15%, mwero wekuchengetedza mvura wezvinhu zvinosimbisa gypsum cement unogona kusvika 90.5%. Uye zvinodiwa zvekuchengetedza mvura zveplaster yepasi. Muyero wechinhu chinochengetedza mvura unodarika 0.2%, zvichiwedzera mwero, uye mwero wekuchengetedza mvura wezvinhu zvinosimbisa gypsum unowedzera zvishoma nezvishoma. Kugadzirira zvinhu zvinosimbisa anhydrite. Muyero wakakodzera wehydroxypropyl methylcellulose i0.1%-0.15%.

Ndezvipi zvakasiyana-siyana zvinokonzerwa ne cellulose yakasiyana pa plaster ye paris?

Mhinduro: Zvese zviri zviviri carboxymethyl cellulose nemethyl cellulose zvinogona kushandiswa sezvinhu zvinochengetedza mvura paplaster ye paris, asi simba rekuchengetedza mvura re carboxymethyl cellulose rakaderera zvikuru pane re methyl cellulose, uye carboxymethyl cellulose ine sodium salt, saka yakakodzera Plaster ye Paris ine simba rekudzora uye inoderedza simba replaster.Methyl celluloseMusanganiswa wakakodzera wezvinhu zve gypsum cementitious zvinosanganisa kuchengetedza mvura, kukora, kusimbisa, uye viscosifying, kunze kwekuti mamwe marudzi ane simba rekunonoka kana dosage yacho yakakura kupfuura carboxymethyl cellulose. Nekuda kweizvi, zvinhu zvakawanda zve gypsum composite gelling zvinoshandisa nzira yekubatanidza carboxymethyl cellulose ne methyl cellulose, izvo zvisingangoshandisi hunhu hwazvo chete (senge simba rekunonoka kwe carboxymethyl cellulose, simba rekusimbisa re methyl cellulose), uye zvinoshandisa zvakanakira zvadzo zvakafanana (senge simba radzo rekuchengetedza mvura uye kukora). Nenzira iyi, simba rekuchengetedza mvura re gypsum cementitious material pamwe nekushanda kwakazara kwe gypsum cementitious material zvinogona kuvandudzwa, nepo kuwedzera kwemutengo kuchichengetwa padanho rakaderera.