1. Mhedziso yemethyl hydroxyethyl cellulose (MHEC)
Methyl hydroxyethyl cellulose (MHEC) isiri-ionic cellulose ether inowanikwa nemethylation modification pahwaro hwehydroxyethyl cellulose. Nekuda kwechimiro chayo chakasiyana chemamorekuru, MHEC ine yakanaka solubility, thickening, adhesion, film-forming and surface activity, uye yakashandiswa zvakanyanya mukuvhara, zvivakwa zvekuvaka, makemikari ezuva nezuva nemimwe minda.
2. Mhedziso yezvipfeko zvepende
Paint strippers gadziriro dzemakemikari dzinoshandiswa kubvisa machira epamusoro sesimbi, huni, uye mapurasitiki. Chinyakare pendi strippers anonyanya kuvimba neakaomarara masisitimu ekunyungudutsa, senge dichloromethane uye toluene. Kunyange zvazvo makemikari aya ari kushanda, ane matambudziko akadai sepamusoro-soro, chepfu uye njodzi dzezvakatipoteredza. Nekuwedzera kuomesera mirau yezvakatipoteredza uye kuvandudzwa kwezvinodiwa nharaunda yekushanda, mvura-yakavakirwa uye yakaderera-chepfu pendi strippers zvishoma nezvishoma zvave zvakanyanya pamusika.
3. Mechanism yezviito zveMHEC mumapuranga epende
Mune pendi strippers, MHEC inoita basa rakakosha seyakakora uye rheology modifier:
Kukora mhedzisiro:
MHEC ine yakanaka thickening maitiro mumvura-based systems. Nekugadzirisa viscosity yependi stripper, MHEC inogona kuita kuti pendi yependi inamate kune yakatwasuka kana yakarerekera nzvimbo isina kudonha. Iyi pfuma inonyanya kukosha panguva yekushandiswa kwependi strippers nekuti inobvumidza iyo pendi stripper kuti irambe iri panzvimbo yakanangwa kwenguva yakareba, nekudaro ichivandudza pendi yekubvisa mhedzisiro.
Gadzirisa iyo suspension system:
Paint strippers kazhinji ine zvakasiyana siyana zvinoshanda, izvo zvinogona stratify kana kugadzirisa panguva yekuchengetedza. Nekusimudzira viscosity yegadziriro yemhinduro, MHEC inogona kudzivirira zvinobudirira kusvibiswa kwezvikamu zvakasimba, kuchengetedza kugoverwa kweyunifomu yezvigadzirwa, uye kuvimbisa kushanda kwakagadzikana kwependi stripper.
Rongedza rheological properties:
Kushandiswa kwependi strippers kunoda kuti ine yakanaka rheological properties, kureva kuti, inogona kuyerera zvakanaka kana simba rekunze rinoshandiswa, asi rinogona kukora nekukurumidza kana yakamira. Iyo molecular chain chimiro cheMHEC inopa iyo yakanaka shear thinning properties, ndiko kuti, pakukwirira kweshear rates, viscosity yemhinduro ichaderera, zvichiita kuti jira repende rive nyore kushandisa; panguva yakaderera shear rates kana iri static state, mhinduro viscosity yakakwira, iyo inobatsira zvinhu kuumba yunifomu yejasi pane inotarirwa pamusoro.
Kurudzira kugadzirwa kwemafirimu:
Munguva yekubvisa pendi maitiro, MHEC inogona kubatsira mupendero wependi kugadzira firimu reyunifomu pane inotarirwa nzvimbo. Iyi firimu haigoni kungorebesa nguva yekuita yezvishandiso zvinoshanda, asi zvakare kuwedzera kugona kwekuvhara kwependi stripper kune imwe nhanho, kuitira kuti ikwanise kupinda muzvikamu zvese zvekupfeka.
4. Mashandisiro eMHEC mumapendi strippers
Kugadzirira kweaqueous solution:
MHEC inowanzovapo mune fomu yehupfu uye inoda kugadzirirwa mumhinduro yemvura isati yashandiswa. Muitiro wakawanda ndewekuwedzera zvishoma nezvishoma MHEC kumvura yakamutswa kuti usasangana. Izvo zvinofanirwa kucherechedzwa kuti solubility yeMHEC ichakanganiswa nekupisa kwemvura uye pH kukosha. Tembiricha yepamusoro yemvura (50-60 ℃) inogona kukurumidzira kunyungudika kweMHEC, asi yakanyanya tembiricha ichakanganisa kuita kwayo viscosity.
Yakasanganiswa mupende strippers:
Paunenge uchigadzira pendi strippers, MHEC aqueous solution inowanzowedzerwa zvishoma nezvishoma kune pendi stripper base fluid iri kubvongodzwa. Kuti uve nechokwadi chekupararira kweyunifomu, kukurumidza kwekuwedzera kweMHEC hakufaniri kunge kwakakurumidza, uye kubvongodza kunofanira kuenderera mberi kusvikira mhinduro yeyunifomu yawanikwa. Kuita uku kunoda kudzora kumhanya kwekusimudzira kudzivirira kuumbwa kwemafuru.
Kugadziriswa kweformula:
Huwandu hweMHEC mumapendi strippers hunowanzo gadziridzwa zvinoenderana neiyo chaiyo fomati uye chinangwa chekuita kwependi strippers. Iyo yakawanda yekuwedzera huwandu huri pakati pe0.1% -1%. Yakanyanya kusimba yekukora mhedzisiro inogona kukonzera kusaenzana kupfekedza kana kuwandisa viscosity, nepo kusakwana dosi inogona kusawana yakaringana viscosity uye rheological zvivakwa, saka zvinodikanwa kukwirisa kushandiswa kwayo kuburikidza nekuyedza.
5. Zvakanakira zveMHEC mune pendi strippers
Kuchengetedza uye kuchengetedza kwezvakatipoteredza:
Kana ichienzaniswa neyechinyakare thickeners, MHEC isiri-ionic cellulose ether, haina chepfu uye inokuvadza zvinhu, yakachengeteka kumuviri wemunhu uye zvakatipoteredza, uye inofambirana nedanho rekuvandudza remazuva ano egirinhi chemistry.
Kugadzikana kwakanyanya: MHEC ine kugadzikana kwakanaka kwekemikari muhupamhi pH (pH 2-12), inogona kuchengetedza yakagadzikana thickening mhedzisiro mune akasiyana pendi stripper masisitimu, uye haisi nyore kukanganiswa nezvimwe zvikamu muhurongwa.
Kugarisana kwakanaka: Nekuda kwechimiro chisiri-ionic cheMHEC, inonyatso kuenderana neakawanda anoshanda zvigadzirwa, hazvizodyidzana kana kukonzera kusagadzikana kwehurongwa, uye inokodzera mhando dzakasiyana dzependi stripper formulations.
Inoshanda thickening mhedzisiro: MHEC inogona kupa yakakosha kukora mhedzisiro, nekudaro ichidzikisa huwandu hwemamwe makobvu mumucheka wependi, kurerutsa fomula uye kuderedza mitengo.
Methyl hydroxyethyl cellulose (MHEC) yakashandiswa zvakanyanya mumachira ependi emazuva ano nekuda kwekukora kwayo, kugadzikana uye kuenderana. Kuburikidza nekugadzira uye kushandiswa kweformula inonzwisisika, MHEC inogona kuvandudza zvakanyanya mashandiro ependi strippers, ichiita kuti varatidze kugona kwepamusoro uye kuchengetedza kwezvakatipoteredza mumashandisirwo anoshanda. Mune ramangwana, nekuenderera mberi kwekuvandudza tekinoroji yependi stripper uye nekumwe kuvandudzwa kwezvinodiwa zvekuchengetedza kwezvakatipoteredza, tarisiro yekushandiswa kweMHEC mumapendi strippers ichawedzera.
Nguva yekutumira: Jun-14-2024