Kushandiswa kweHydroxypropyl Methylcellulose muGypsum

Hydroxypropyl Methylcellulose (HPMC)chinhu chinowedzera chinowanzo shandiswa mukuvaka, kunyanya mune gypsum-based zvigadzirwa. HPMC ine kuchengetedza kwemvura kwakanaka, kukora, lubricity uye kunamatira, zvichiita kuti ive chinhu chakakosha muzvigadzirwa zvegypsum.

1. Basa reHPMC mugypsum

Kuvandudza kuchengetedza kwemvura

HPMC ine yakanakisa kunyudza mvura uye kuchengetedza mvura zvivakwa. Munguva yekushandiswa kwezvigadzirwa zvegypsum, kuwedzera huwandu hwakakodzera hweHPMC kunogona kunyatso kunonoka kurasikirwa kwemvura, kunatsiridza kushanda kwegypsum slurry, kuichengeta yakanyorova kwenguva yakareba panguva yekuvaka, uye kudzivirira kuputika kunokonzerwa nekukurumidza kubuda kwemvura.

Kuvandudza adhesion uye anti-sagging zvivakwa

HPMC inopa gypsum slurry yakanaka adhesion, ichiibvumira kuti inamire zvakanyanya kumadziro kana mamwe ma substrates. Kune zvigadzirwa zvegypsum zvakavakwa panzvimbo yakatwasuka, iko kukora kweHPMC kunogona kuderedza kusagika uye kuve nechokwadi chekufanana uye kutsvinda kwekuvaka.

Kuvandudza kushanda kwekuvaka

HPMC inoita kuti gypsum slurry ive nyore kushandisa uye kupararira, inovandudza kuvaka kwekuvaka, uye inoderedza tsvina yezvinhu. Mukuwedzera, inogonawo kuderedza kukwesha panguva yekuvaka, zvichiita kuti zvive nyore uye zvakapfava kuti vashandi vekuvaka vashande.

Vandudza crack resistance

Munguva yekubatana kwezvigadzirwa zvegypsum, kusaenzana kwemvura kunogona kukonzera kuputika kwepamusoro. HPMC inoita kuti gypsum hydration iwedzere yunifomu kuburikidza nekuita kwayo kwakanakisa kwekuchengetedza mvura, nekudaro ichidzikisa kuumbwa kwekutsemuka nekuvandudza huwandu hwese hwechigadzirwa chakapedzwa.

Kufurira pane coagulation nguva

HPMC inogona kuwedzera zvakakodzera nguva yekushanda yegypsum slurry, ichibvumira vashandi vekuvaka kuti vave nenguva yakakwana yekugadzirisa uye kucheka, uye kudzivirira kukundikana kwekuvaka nekuda kwekumhanya kwakanyanya kwegypsum.

2. Kushandiswa kweHPMC mune zvakasiyana-siyana zvegypsum zvigadzirwa

Gypsum plastering

Mune gypsum plastering zvinhu, basa guru reHPMC nderekuvandudza kuchengetwa kwemvura uye kuvandudza mashandiro ekuvaka, kuitira kuti gypsum inogona kunamatira zviri nani kumadziro, kuderedza kuputika, uye kuvandudza kunaka kwekuvaka.

Gypsum putty

HPMC inogona kuvandudza lubricity uye kutsvedzerera kweputty, uku ichiwedzera kunamatira, ichiita kuti ive yakakodzera kushongedza kwakanaka.

Gypsum board

Mukugadzira gypsum board, HPMC inonyanya kushandiswa kudzora chiyero che hydration, kudzivirira bhodhi kubva pakuwoma nekukasira, kuvandudza kunaka kwechigadzirwa chakapedzwa, uye kuwedzera kurongeka kwayo.

Gypsum self-leveling

HPMC inogona kuita gobvu mukuita gypsum self-leveling zvinhu, ichipa zviri nani fluidity uye kugadzikana, kudzivirira kupatsanurwa uye sedimentation, uye kunatsiridza basa rekuvaka.

3. Mashandisiro eHPMC

Kune kunyanya dzinotevera nzira dzekuwedzera HPMC kune gypsum zvigadzirwa:
Yakananga yakaoma musanganiswa: Sanganisa HPMC zvakananga nezvinhu zvakaoma senge gypsum poda, uye wedzera mvura uye kurunga zvakaenzana panguva yekuvaka. Iyi nzira yakakodzera kune pre-yakasanganiswa gypsum zvigadzirwa, senge gypsum putty uye plastering zvinhu.

Wedzera mushure mekutanga-kuparara: Dissolve HPMC mumvura mune colloidal mhinduro kutanga, uye wobva wawedzera kune gypsum slurry kuitira kupararira kuri nani uye kuparara. Inokodzera zvigadzirwa zvine zvimwe zvakakosha maitiro zvinodiwa.

4. Kusarudzwa uye kudzora kuyerwa kweHPMC

Sarudza viscosity yakakodzera

HPMC ine akasiyana viscosity modhi, uye iyo yakakodzera viscosity inogona kusarudzwa zvinoenderana nezvinodiwa chaizvo zvegypsum zvigadzirwa. Semuenzaniso, high-viscosity HPMC yakakodzera kuwedzera kunamatira uye anti-sagging, nepo yakaderera-viscosity HPMC inonyanya kukodzera gypsum zvinhu zvine fluidity yakakwirira.

Kudzora kunonzwisisika kwehuwandu hwekuwedzera

Huwandu hweHPMC hwakawedzerwa hunowanzo hushoma, kazhinji pakati pe0.1% -0.5%. Kuwedzeredza kwekuwedzera kunogona kukanganisa nguva yekumisikidza uye simba rekupedzisira regypsum, saka inofanirwa kugadziridzwa zvine mutsindo zvinoenderana nehunhu hwechigadzirwa uye zvinodiwa zvekuvaka.

Hydroxypropyl methylcelluloseinoita basa rakakosha mune gypsum-based materials. Haingonatsiridza kuchengetedza kwemvura uye kuita kwekuvaka, asi zvakare inosimudzira kunamatira uye kutsemuka kuramba, zvichiita kuti zvigadzirwa zvegypsum zvigadzikane uye zvigare. Kusarudzwa kwakanaka uye kushandiswa kweHPMC kunogona kuvandudza zvakanyanya kunaka kwezvigadzirwa zvegypsum uye kusangana nezvinodiwa zvakasiyana zvekuvaka.