HPMC mu gypsum plaster

Hydroxypropyl Methylcellulose (HPMC)i-non-ionic cellulose ether, iyo inoshandiswa zvakanyanya muzvinhu zvekuvaka, kunyanya mudhaka rakasanganiswa rakaoma, tile adhesive, putty powder uye zvigadzirwa zvegypsum.

1. Pfupiso ye gypsum plaster

Gypsum plaster chinhu chinoyera madziro chine gypsum yekuvaka sechinhu chikuru chekusimbisa, chine zvakanakira zvekuvaka zviri nyore, kuoma nekukurumidza uye hushamwari kune nharaunda. Zvichienderana nehuwandu hwezvimwe zvinhu zvakasiyana, zvigadzirwa zvine hunhu hwakasiyana senge plaster yemaoko, gypsum yekupfapfaidza uye gypsum yekuzvienzanisa zvinogona kugadzirwa. Kunyangwe gypsum plaster ine hukama hwakati wandei uye kumhanya kwayo kuomesa, ichiri nematambudziko akadai sekusachengeta mvura zvakanaka, kutsemuka kuri nyore uye kuvaka kusina kunaka panguva yekuvaka, saka zvakakosha kuwedzera zvinhu zvakagadziriswa zvakakodzera kuti ivandudze mashandiro ayo akazara.

2. Maitiro ekuita kweHPMC

Sechinhu chinoshanda zvakanyanya chepolymer chinonyungudika mumvura, HPMC inonyanya kuvandudza mashandiro egypsum plaster kuburikidza nezvinhu zvinotevera:

2.1. Kuchengetedzwa kwemvura kwakavandudzwa:

HPMC ine kugona kwakanaka kwekuchengetedza mvura uye inogona kuderedza zvakanyanya kurasikirwa kwemvura kwegypsum panguva yekuvaka. Chinhu ichi chakakosha pakuwedzera nguva yekutanga yekuisa gypsum uye kuvandudza nguva yekushanda kwekuvaka, kunyanya pakupisa kwakanyanya kana kuti ma base layers anonyudza zvakanyanya, izvo zvinogona kudzivirira kutsemuka uye kudzikira kwekunamatira.

2.2. Kuvakwa kwakavandudzwa uye kushanda zvakanaka:

HPMC inogona kuwedzera kugadzikana uye kunyorova kwetsvina, zvichiita kuti gypsum plaster ive yakapfava panguva yekupurasita nekuenzanisa madziro, kuderedza kuramba kwemidziyo uye kuvandudza kushanda zvakanaka kwekuvaka. Kune gypsum yakapfapfaidzwa nemuchina, HPMC inyanzvi inodzora rheology.

2.3. Kubudirira kwekudzivirira kudonha kwemvura:

Mukuvaka madziro akakora kana kuti akamira, kuwedzera HPMC kunogona kuwedzera zvakanyanya kushanda kwepurasita kunodzivirira kudonha, zvichiita kuti irambe yakagadzikana uye isingatsvedzereki.

2.4. Kugadzikana kwemabhuru uye kupararira kwakafanana:

Mabhuru madiki anogadzirwa zviri nyore panguva yekusanganisa. HPMC inogona kudzikamisa mabhuru aya, izvo zvinobatsira kuderedza huwandu hweplaster uye kuvandudza mashandiro ekudzivirira kupisa, asi hazvizokanganisi hunhu hwayo hwemuchina.

2.5. Kubatanidzwa kwakasimbiswa:

HPMC inogona kugadzira chimiro chefirimu chinochinjika pakati pegypsum ne substrate, nokudaro ichivandudza mashandiro ekubatanidza uye kuderedza matambudziko emhando yepamusoro akadai sekukwenya nekukwenya.

3. Mazano ekushandisa HPMC uye kurudziro yemushonga

HPMC inowanzo wedzerwa mumusanganiswa we gypsum dry muchimiro cheupfu uye yakasanganiswa zvizere nezvimwe zvinhu (zvakaita se lightweight aggregate, quartz jecha, retarder, nezvimwewo) kuburikidza nekuita musanganiswa wakaoma. Chiyero chayo chinowanzo dzorwa pa 0.1% ~ 0.3% (zvichibva pazvinhu zvakaoma), uye chiyero chaicho chinofanira kugadziriswa uye kugadziriswa zvichienderana nezvinhu zvakaita sefomura yechigadzirwa, nzira yekuvaka uye mamiriro ekunze.

Mukupfapfaidza gypsum, kuitira kuvandudza kutsetseka kwechivakwa uye kugona kupomba, HPMC ine mwero wepamusoro wekutsiva uye viscosity yakakodzera (yakadai se50,000100,000 mPa.s) inogona kusarudzwa, nepo mu gypsum yakapurastwa nemaoko, viscosity yepakati (20,00060,000 mPa.s) inogona kusarudzwa kuti ifunge nezvekunzwa kwechivakwa uye hunhu hwekudzivirira kudonha.

4. Kudzivirira nematambudziko

Kunyangwe HPMC yakaunza mabhenefiti akawanda ku gypsum plaster, zvinhu zvinotevera zvinofanira kucherechedzwa panguva yekugadzira nekushandisa gypsum plaster:

Kupararira kwakafanana: HPMC inofanira kupararira zvizere kudzivirira kusangana, uye kupararira kwayo kunogona kuvandudzwa nekusanganisa kwakaoma kana kunyungudika kusati kwaitwa.

Kuenderana nezvimwe zvinowedzerwa: HPMC inofanira kushanda pamwe chete nezvinodzora mvura, zvinoderedza mvura, zvinosimudzira kupararira kwemvura, nezvimwewo kudzivirira matambudziko.

Kusarudzwa kwakanaka kwekusviba: kusviba kwakanyanya hakusi kwakakwira asi kuri nani. Kusviba kwakanyanya kunokonzera matambudziko ekusanganisa, kusayerera zvakanaka, uye kutokanganisa mashandiro ekupomba.

Nekugadzirwa kwezvinhu zvekuvaka zvakasvibira uye kufarirwa kwekuvaka nemashini, zvinodiwa pakushanda kwegypsum plaster zviri kuwedzerawo. HPMC icharamba ichiita basa guru mukudzora mashandiro ekuvaka uye kuvandudza kugadzikana kwemhando. Panguva imwe chete, zvigadzirwa zve cellulose ether zvakagadziriswa zvichashandiswa pamwe cheteHPMCkusangana nezvinodiwa zvekushanda, zvakaita seHPMC/HEMC compounding system uye multifunctionalupfu hwelatex hunonyungudikamhinduro yakasanganiswa, kubatsira zvigadzirwa zvegypsum kukura zvine divi rekushanda kwepamusoro uye kushanda kwakawanda.