Kushandiswa kweHEC mupendi yelatex

Hydroxyethyl Cellulose (HEC)ipolymer isinganyungudike mumvura, iyo inogadziriswa nemakemikari kubva ku cellulose yechisikigo. Ine hunhu hwakanaka hwekunyungudika kwemvura, kukora, kuchengetedza mvura uye kugadzira firimu. Mupendi yelatex, hydroxyethyl cellulose chinhu chakakosha uye chinoshandiswa zvakanyanya mumadziro emukati nekunze kuti aite gobvu, agare akasimba, aparadzire, amire uye awedzere kushanda.

1. Hunhu hukuru hwehydroxyethyl cellulose

Kunyungudika kwemvura kwakanaka: HEC inogona kunyungudika nekukurumidza mumvura inotonhora nemvura inopisa kuti igadzire mhinduro inoonekera uye yakafanana yecolloidal.

Kusimba kuri pachena: Kunogona kuwedzera kunaka kwependi yelatex uye kuvandudza kushanda kwayo uye kuenzana kwayo.

Kugadzikana kwakasimba kwekusungirirwa: Kunogona kudzivirira kusvibiswa kwemavara nemafuta uye kuvandudza kugadzikana kwekuchengetwa kwependi yelatex.

Hunhu hwakanaka hwekugadzira firimu: Inobatsira kugadzira firimu rakakora uye kuvandudza kuzara uye kutsetseka kwefirimu rependi.

Kuenderana kwakasimba: Inoenderana zvakanaka nemhando dzakasiyana dze emulsions, pigments, fillers nezvimwe zvinowedzera. 

2. Basa rehydroxyethyl cellulose mupendi yelatex

Kukora: Kudzora hunhu hwependi, kudzivirira kudonha kwemvura nekupwanya, uye kunatsiridza mashandiro ekukwesha nekumonera.

Chinhu chinochengetedza mvura: Chinodzivirira kurasikirwa nemvura mupendi panguva yekuvaka uye chinovandudza kunaka kwekugadzira firimu panguva yekuomesa.

Stabilizer: Kuvandudza kupararira uye kugadzikana kwe emulsion uye pigment filler mufomura kudzivirira kupatsanurwa uye kuungana.

Kuvandudza mashandiro ekuvaka: Kuvandudza kunyorova uye kutsetseka kwekuvaka kuitira kuti kukwesha kuite kunyorova uye kuve kwechisikigo.

3. Nzira yekushandisa

3.1. Nzira yekupararira zvakananga nehupfu hwakaoma

Inoshanda mumamiriro ekugadzira nemidziyo yekupararira inokurumidza:

Wedzera huwandu hwakatarwa hwemvura yakachena mutangi rekusanganisa;

Tanga nekukurunga nekukurumidza wobva wawedzera zvishoma nezvishoma HEC dry powder;

Ramba uchikurunga kwemaminitsi gumi nemashanu kusvika makumi matatu kusvika HEC yanyorova zvakakwana uye yapararira;

Mira kweawa imwe kusvika mbiri (kana kupfuura) kuti ikwanise kuzvimba zvizere;

Kurunga zvakare kusvika yanyungudika zvachose kuti pave nemushonga wakafanana uye wakajeka unonamira;

Wedzera mamwe ma emulsions, pigments, zvinowedzera, nezvimwewo kuti ugadzire pendi ye latex.

3.2. Nzira yekuchenesa doro remumai risati raiswa gelatinized

Yakakodzera kugadzirwa kwehuwandu, iri nyore kushandisa uye kuyera:

Chekutanga nyorovesa HEC nemvura;

Pisa zvishoma nezvishoma kusvika pa60-70℃ uchikurunga zvishoma nezvishoma kuti inyungudike;

Kana kuti shandisa nzira yekunyungudutsa mvura nekuwedzera chidimbu chidiki chealkali (senge mvura yeammonia);

Mushure mekunyungudika, doro remhando yepamusoro rinogadzirwa, iro rinogona kuwedzerwa papendi yelatex kana zvichidikanwa.

4. Kurudziro yemushonga wekushandisa

Huwandu hwehydroxyethyl cellulose inowedzerwa papendi yelatex hunowanzova 0.2% ~ 1.0% (zvichienderana nemhando yechigadzirwa chapera), iyo inogadziriswa zvichienderana nekunaka kunodiwa uye mashandiro ekuvaka.

Kusviba (kunowanzo shandiswa pa2% yemvura) kune mhando dzakasiyana dzesarudzo, kubva pamakumi ema mPa·s kusvika kumazana ezviuru zve mPa·s. Anoshandiswa kazhinji ndeaya:

30,000~60,000 mPa·s: yependi dzelatex dzine viscosity yepakati neyakakwira;

100,000~200,000 mPa·s: yependi dzakakora kana pendi dzakanamirwa.

5. Kungwarira

Kurongeka kwekupararira kwakakosha: hupfu hwakaoma hunofanira kupararira zvakaenzana kudzivirira kusangana kwenzvimbo uye kuoma kwekunyungudika.

Dzivisa kuchekwa: Pakuwedzera HEC, kukurunga nekukurumidza kunofanira kuitwa kuti hupfu husakanganiswe nekunyungudika.

Kugadzikana kwekuchengetedza: Mushonga weHEC unofanirwa kuchengetwa patembiricha yemukamuri kudzivirira kuratidzwa kwenguva refu pakupisa kwakanyanya kana mamiriro ekunze ane acid yakawanda uye alkali.

Kuedzwa kwekuenderana: Kuenderana kweHEC nema emulsions nezvimwe zvinowedzerwa kubva kuvagadziri vakasiyana kunogona kusiyana, uye fomura inofanira kusarudzwa mushure meedzo.

Sechinonyungudutsa mvura chinoshanda zvakanaka, chisingadhuri uye chisina njodzi kunharaunda, kushandiswa kwehydroxyethyl cellulose mupendi yelatexinopa chigadzirwa ichi ruzivo rwakanaka rwekudzora rheological uye kuvaka. Nekusarudza zvine musoro giredhi re viscosity, kudzora nzira yekuwedzera uye chiyero chefomula, mashandiro ependi yelatex anogona kuvandudzwa zvakanyanya. Nekutsvaga nguva dzose kuchengetedzwa kwezvakatipoteredza uye mashandiro muindasitiri yekupenda kwezvivakwa, kukosha kwekushandisa kweHEC kuchasimbiswa zvakanyanya.