HPMC (hydroxypropyl methylcellulose) chinhu chakasiyana-siyana chemakemikari chinoshandiswa zvakanyanya mukuvaka uye mamwe maindasitiri minda. Iyo isiri-ionic cellulose ether yakagadzirwa kubva kumakemikari yakagadziridzwa selulosi chaiwo. HPMC ine mabasa akasiyana-siyana akadai sekukora, kuchengetwa kwemvura, kuumbwa kwemafirimu, mafuta ekuzora, uye kunamatira, zvichipa mukana wakawanda wekushandisa muindasitiri yekuvaka.
1. Kushanda kwakakosha kweHPMC mumashandisirwo ekuvaka
(1) Kukora mhedzisiro
Kana HPMC yakanyungudika mumvura, inogona kuwedzera zvakanyanya viscosity yemvura. Iyi thickening effect yakakosha zvikuru mukuvaka zvinhu. Semuenzaniso, mune simende dhaka, HPMC inogona kuvandudza viscosity yedhaka, kuvandudza kusununguka kwekuvaka, uye kuita kuti chivakwa chive chakapfava.
(2) Kuchengeta mvura
HPMC ine yakanakisa kuchengetedza mvura, iyo inononoka kubuda kwemvura mumamiriro akaoma. Izvi zvinonyanya kukosha musimende-based zvinhu kudzivirira dhaka kana kongiri kubva pakuoma kana kurasikirwa nesimba nekuda kwekukurumidzira kurasikirwa kwemwando usati wagadzika. Mukuwedzera, kuchengetedza mvura kunogona kuvandudza nguva yekuvhura yeadhesives uye putty powder, kupa vashandi vekuvaka nguva yakawanda yekugadzirisa.
(3) Anti-sag pfuma
Mukuvaka kwakamira (sekupurasita madziro kana kuisa matairi), HPMC inogona kudzivirira zvinhu kubva pakutsvedza pasi nekuda kwesimba rinokwevera zvinhu pasi. Inobatsira dhaka kana kunamira kuchengetedza kunamatira kwakanaka uye inovimbisa kuvakwa kwakatsetseka.
(4) Yakanakisa firimu-kugadzira zvinhu
HPMC inoumba firimu rakafanana mushure mekuoma, firimu-kuumba chivakwa chakakosha mukuputira kusapinda mvura uye kudzikamisa pasi. Iyo firimu-yakagadzirwa coating inogona kuwedzera kupikisa kwemvura uye kusagadzikana kwemamiriro ekunze kwezvinhu.
(5) Lubrication uye bonding mhedzisiro
HPMC inogona kuvandudza lubricity yezvivakwa zvekuvaka, kuderedza kupokana panguva yekuvaka, uye kuita kuti zvinhu zvipararire zvakanyanya pamusoro peiyo substrate. Uye zvakare, HPMC inogona kukwidziridza zvivakwa zvekubatanidza uye kugadzirisa simba rekubatanidza mune mamwe anonamira.
2. Kushandiswa kweHPMC mune chaiyo minda yekuvaka
(1) Cement-based mortar
Mukupura dhaka, masonry dhaka, uye dhaka rinozvimisa, HPMC inogona kuvandudza kuchengetwa kwemvura uye kuyerera kwedhaka, nekudaro ichivandudza kuita kwekuvaka uye yekupedzisira kuumba mhando. Pamusoro pezvo, iyo anti-sag pfuma yeHPMC inova nechokwadi chekuti dhaka haritsvedzeri pasi zviri nyore kana rakaiswa kumadziro akatwasuka.
(2) Ceramic tile adhesive
Izvo zvakakosha zvinodikanwa zvekunamira kwetairi isimba rekubatanidza uye nyore kwekuvaka. HPMC mune mataira adhesive haingogone kuvandudza kunamatira kweiyo colloid, asi zvakare kuwedzera nguva yekuvhura, ichibvumira vashandi vekuvaka kuti vave nenguva yakareba yekugadzirisa, nekudaro kuvandudza kugona kwekuvaka.
(3) Putty powder
HPMC inopa putty poda yakanaka kuchengetedza mvura uye fluidity. Munguva yekuvaka putty, kuchengetwa kwemvura kunodzivirira base layer kubva pakutora mvura nekukurumidza, inova nechokwadi chekuti putty inomesa zvakaenzana, uye inoderedza njodzi yekutsemuka nekudonha.
(4) Kuvhara kwemvura
Iyo firimu-inogadzira zvimiro zveHPMC yakanyatsokodzera kuti isapinda mvura. Inogona kubatsira iyo yekuputira kuumba dense uye yunifomu isina mvura layer pamusoro peiyo substrate kuti iwedzere kusapinda kwemvura kugona kwechivako chivakwa.
(5) Gypsum-based products
Mune gypsum-based screeding uye plastering zvinhu, HPMC inopa kuchengetedza kwemvura kwakanaka, kudzivirira iyo gypsum kubva pakurasikirwa nesimba nekuda kwekuwanda kwekurasikirwa kwehunyoro. Panguva imwecheteyo, iyo thickening mhedzisiro inogona kuvandudza kusununguka kwekushandisa.
3. Zvakanakira uye zvisingakwanisi zveHPMC
Zvakanakira:
Wide applicability: Inokodzera kwakasiyana-siyana substrates, semendi, gypsum, lime, nezvimwe.
Kudzivirirwa kwezvakatipoteredza: Sechinobva cellulose, HPMC yakachengeteka, haina chepfu uye inosangana nekuchengetedzwa kwezvakatipoteredza zvinodiwa.
Versatility: Inopa akasiyana zvivakwa zvakaita sekuchengetedza mvura, kukora, uye kuumbwa kwemafirimu, uye inogona kuenderana nezvinodiwa zveakasiyana mamiriro ekuvaka.
muganhu:
Mutengo: Mutengo weHPMC wakakwira zvishoma zvichienzaniswa nezvimwe zvechinyakare, izvo zvinogona kuwedzera mutengo wekugadzira zvinhu zvekuvaka.
Alkaline Resistance Limitations: Kuita kweHPMC kunogona kuderedzwa mune dzimwe nzvimbo dzine alkaline, zvinoda kuyedzwa uye kugadzirisa kune chaiyo nharaunda.
4. Kugona kweHPMC mukuvaka mune ramangwana
Sezvo kudiwa kweindasitiri yekuvaka kwepamusoro-kuita, zvinhu zvine hushamwari zvakatipoteredza zvichikura, nzvimbo dzekushandisa dzeHPMC dziri kuwedzerawo. Semuyenzaniso, muzvivakwa zvakasvibira uye zvivakwa zvakaderera-simba, HPMC inogona kushandiswa sechinhu kiyi yekuwedzera kugadzira yakawanda-inoshanda simba uye ine hushamwari zvivakwa zvekuvaka. Panguva imwecheteyo, nekufambira mberi kwetekinoroji, mashandiro uye kugadzikana kwekuita kweHPMC kuchawedzerwa kuvandudzwa.
Sekuwedzera kwemaitiro akawanda,HPMCine basa risingatsivike muzvikumbiro zvekuvaka. Kubva kune simende dhaka kusvika kune inonamira mataira, kubva putty poda kusvika pakuputira mvura, inogona kushandiswa munenge zvese zvekuvaka. Nezvivakwa zvayo zvakanaka, HPMC inobatsira kuvandudza mashandiro ekuvaka uye kusimba kwezvivakwa zvekuvaka uye chikamu chakakosha chebudiriro yeramangwana yeindasitiri yekuvaka.
Nguva yekutumira: Nov-11-2024