Hydroxypropyl Methylcellulose (HPMC)i-non-ionic cellulose ether inoshandiswa zvakanyanya mukuvaka, kunyanya muzvishandiso zvekubatanidza (Joint Filler kana Tile Grout). Seimwe yezvakawedzerwa zvakakosha, HPMC ine basa risingatsiviwi. Zvakanakira zvayo zvikuru zvinosanganisira kuchengetedza mvura zvakanaka, kukora, mafuta uye kuvandudzwa kwekushanda kwekuvaka.
1. Pfupiso Yekutanga Yezvizadza Majoini
Zvishandiso zvekubatanidza zvinoshandiswa zvakanyanya kuzadza mipata iri pakati pemataira nematombo. Hazvingoiti basa rekushongedza chete, asiwo zvine mabasa ekudzivirira mvura, asinganyungudike uye asingatsemuke. Zvishandiso zvekubatanidza zvakajairika zvinosanganisira mhando dzesimende, epoxy resin uye polymer-modified. Zvishandiso zvekubatanidza zvakagadzirwa nesimende zvinoshandiswa zvakanyanya nekuda kwemutengo wakaderera uye kushanda kwakawanda.
Zvisinei, majoini echinyakare akagadzirwa nesimende ane matambudziko akadai sekutsemuka kuri nyore, kusanyatsonamira zvakanaka uye kusanzwa zvakanaka pakuvaka. Kuti zvisanyanya kuipa izvi, zvinhu zvinowedzerwa mu cellulose ether zvakaita seHPMC zvinowanzoiswa mufomura.
2. Basa reHPMC mukuzadza majoini
2.1. Kuchengetedzwa kwemvura kwakawedzerwa
HPMC ine hunhu hwakasimba hwekuchengetedza mvura, izvo zvinogona kuvharira hunyoro, kudzivirira simende kuti isarasike nemvura nekukurumidza, uye kuwedzera mwero wemvura yesimende, nokudaro zvichiwedzera simba rekubatanidza uye kuramba kutsemuka kwemajoini. Izvi zvakakosha zvikuru pakuvaka kwakatetepa uye munzvimbo dzakaoma.
2.2. Kuvandudzwa kwekushanda kwekuvaka
Munguva yekuvaka, HPMC inogona kuvandudza zvakanyanya kunyorova uye kuyerera kwechigadzirwa, zvichiita kuti zvive nyore kuparadzira nekuzadza matope, zvichideredza kuoma kwekuvaka. Panguva imwe chete, inogonawo kudzivirira matope kuti asaome nguva isati yakwana, zvichiwedzera nguva yekushanda uye nguva yekugadzirisa.
2.3. Kudzora kukora uye thixotropy
HPMC inoumba mhinduro yakafanana yecolloidal, zvichiita kuti slurry ive yakasimba uye thixotropy, zvichiita kuti chivharo chejoin chive nyore kushandisa uye kuchengetedza kushanda kwakanaka kwekurembera kwakamira, kudzivirira matambudziko akadai sekudzika nekutsvedza panguva yekuvaka.
2.4. Kunamira kwakavandudzwa
Huwandu hwakakodzera hweHPMC hunogona kunatsiridza kunamira pakati petsvina nemucheto wetaira nepasi, nokudaro zvichivandudza kugadzikana kwechimiro chose uye kuderedza kutsemuka nekudonha kwemvura gare gare.
2.5. Kudzivirira kutsemuka uye kudzivirira kuderera
HPMC inogona kuderedza zvakanyanya mwero wekupwanyika kwemvura nekuchengetedza mvura uye kuvandudza huwandu hwezvinhu, uye kuderedza njodzi yekutsemuka kunokonzerwa nekurasikirwa nemvura uye kupwanyika mushure mekuvharwa kwemvura. Yakakodzera kushandiswa munzvimbo dzine kuchinja kwekushisa nehunyoro kakawanda.
2.6. Kuramba kwenguva refu uye kutsungirira chando kwakawedzera
Munzvimbo dzine tembiricha yakaderera, HPMC inogona kubatsira chinhu chinobata mhepo kuti chirambe chichichinjika uye kudzivirira kukuvara kwechando; chimiro chayo chakasimba chemorekuru chinogonawo kuvandudza kugadzikana kwenguva refu kwechinhu chinobata mhepo.
3. Mazano ekushandisa
3.1. Huwandu hunokurudzirwa hwekuwedzera
Huwandu hunokurudzirwa hweHPMC mujoint filler hunowanzova 0.2%~0.5%, iyo inogona kugadziriswa nemazvo zvichienderana nefomura yechigadzirwa. Huwandu hwakanyanya hwekuwedzera hunogona kukonzera kudzikira kwekumhanya kwekuomesa uye simba, saka fomura inofanira kugadziriswa pamwe chete nekuyedza.
3.2. Nzira yekupararira nekunyungudutsa
HPMC inofanira kunyungudutswa muchinhu chakaoma painoshandiswa kudzivirira kuungana kunokonzerwa nekuwedzera mvura zvakananga; zvinokurudzirwa kuiisa mumvura kana ichikurunga nekukurumidza kuti inyunguduke zvakaenzana.
3.3. Simba rekubatana nezvimwe zvinowedzera
HPMC inogona kushandiswa pamwe chete ne starch ether, redispersible latex powder, water reducer, nezvimwewo kuti ibudirire zviri nani. Kunyanya, kana ikashandiswa pamwe chete neRDP (latex powder), inogona kuvandudza zvakanyanya kuchinjika uye simba rekubatanidza.
4. Mazano ekusarudza HPMC
HPMC ine mhando dzakasiyana-siyana, uye mashandiro ayo anokanganiswa nedanho rekutsiva (DS), viscosity, saizi yezvikamu uye kupararira kwayo. Muzvishandiso zvekuzadza majoini, zvinokurudzirwa kusarudza mhando dzinotevera dzeHPMC:
Kusviba kwepakati nepakati uye kwakaderera (40,000~100,000 mPa·s): tichifunga nezvekugadzirwa uye kuchengetwa kwemvura, zvakakodzera mafomura mazhinji.
Rudzi rwechinguvana (rudzi rwekurapa pamusoro): rwakakodzera kupararira nekukurumidza uye nguva shoma yekunyungudika.
Chigadzirwa chinotsiva zvakanyanya: kuchengetedza mvura kwakasimba, kwakakodzera kuvaka munzvimbo dzinopisa zvakanyanya kana dzakaoma.
Sechinhu chinobatsira zvikuru chinowedzera muzvizadza zvemajoini HPMChaingogadzirisi chete mashandiro ekuvaka uye hupenyu hwebasa rechinhu chacho, asiwo inovandudza zvikuru mhando yese uye ruzivo rwemushandisi wechigadzirwa. Nekugadzirwa kwezvinhu zvekuvaka zvakasvibirira uye zvine hushamwari kune nharaunda, HPMC ichaita basa rakakosha mukuzadza majoini nemamwe makemikari ekuvaka nekuda kwezvakanaka zvayo zvakaita sezvinobva muzvinhu zvipenyu, zvisingakuvadzi uye zvinoora.
Nguva yekutumira: Chikumi-05-2025