HydroxyPropyl methylcellose (HPMC) is is is is is is-ionic yemvura-yekunyora polymer compind, inowanzoshandiswa mune zvekuvakisa, kunyanya mukugadziridzwa kweiyo coment-yakavakirwa nzvimbo. HPMC ine yakanakisa kuDhipatimendi, kuumbwa kwemvura, kushandiswa uye kuparadzaniswa, kuti zvive zvemutercs
1. Basic maitiro uye mabasa eHPMC
Semunhu anoshambadzira kuComent, HPMC anonyanya kukanganisa mashandiro eiyo simendi kuburikidza neyekutevera michina:
Kuchengeta mvura: HPMC inogona kunonoka kunyorera kubhururuka kwemvura muComent Paste, nekudaro nekutsvaga nguva yekuvaka yekuvakwa uye kudzivisa kupaza kwemvura yakakonzerwa nekuwedzera kwemvura.
Kuita kwakasimba: HPMC ine chiyero chakakora, chinogona kuita kuti simenti yacho ive yunifomu panguva yekuvaka yekuvaka uye nekusimudzira nzvimbo yekubatira.
Kuvandudza Rheology: HPMC inogona kugadzirisa zvivakwa zvezvivakwa zveSement paste, zvichiita kuti ive neyakajeka uye yekuvaka zvinhu, uye kudzivisa kuunganidzira pakuvaka panguva yekuvaka.
Anti-kugadzirisa zvinhu: Nekuda kweiyo molecular chimiro cheHPMC, zvinobatsira kuvandudza kugadzikana kweiyo slurry uye kudzivirira iyo singivation yezvikamu zvakasimba mumisimboti.
2. Mhedzisiro yeHPMC pane dzakasiyana mhando dzeSement
(1) Yakajairika Portland Sement (OPC)
Specled Portland Sement ndiyo inonyanya kushandiswa mhando yeiyo simenti. Basa reHPMC mazviri rinonyanya kuratidzwa mune zvinotevera zvinhu:
Kuvandudza Kushanda: Kana uchishandisa OPC, imwe huwandu hwemvura inowanzowedzerwa. HPMC inogona kuvandudza zvivakwa zvayo uye kugadzikana kweiyo slurry kuburikidza nekukasira, nekudaro kudzivirira simende slurry kubva pakuwedzera kwekuyerera kana kuoma nekukurumidza panguva yekuvaka.
Kunonoka kutanga kuseta nguva: HPMC inogona kunonoka nguva yekuisa yeiyo simende uye kudzivirira simende kubva pakuisa pakutanga. Izvo zvakakodzera zvakanyanya kune yakakura-yekuvaka kuvaka kana nzvimbo dzakakwirira-tembiricha.
Kuvandudza Kwemvura Kuchengeta Kwemvura: HPMC inowedzera kuchengetwa kwemvura yeSement slurry, kudzivirira mvura kubva mukubuda nekukurumidza panguva yekuporesa, nekukonzera kukurudzira kusimba kwesimbe.
(2) yakakwirira-alumina cement
Nekuda kwechikamu chikuru chealuminate zvicherwa muchimiro chayo chemakemikari, repamusoro-alumina simende ine simba rinokurumidza kuwedzera mushure mekuomesa. Nekudaro, nekuda kwekupisa kwakanyanya kwehydration yekupisa kweiyo yepamusoro-alumina cement, marara uye zvimwe zvinetso zvinowanzoitika panguva yekuvaka. Kuwedzerwa kweHPMC kunogona kubatsira zvinobudirira zvivakwa zvayo zvinotevera:
Kunonoka hydration reaction: HPMC inogona kunonoka kuitwa kwehydration, kunyanya muchikamu chekutanga chechikamu chepamusoro-alumina, kuderedza hydration kupisa uye kudzivirira marara.
Kuvandudza HPMC inobatsira kuvandudza iyo fluidity uye kufanana panguva yekuvakwa nekuwedzera viscosity uye kugadzirisa kugadzikana kweiyo paste.
Kuvandudza kuparara kupokana: Kuchengeta kwemvura kweHPMC kunovandudza kurapa kwemamiriro ekurapa kweiyo yepamusoro-alumina cement uye inodzivisa kupaza inokonzerwa nekuvhura kwemvura.
(3) chena cement
Chena simende inowanzoshandiswa muzvivakwa zvekushongedza uye zvivakwa zvakakosha zvinoshanda. Mhedzisiro mikuru yeHPMC mune chena cement ndeye:
Kuvandudza Dhezheni uye Kupokana Kwemvura: HpMC inogona kuwedzera kusimba kweiyo clement chena, kunyanya munzvimbo ine hunyoro. White sumbeni inowanzoshandiswa mune yekudzima madziro madziro uye yakakwirira-yekupedzisira yekushongedza zvinhu. Kuwedzerwa kweHPMC kunogona kuvandudza zvinobudirira kwemvura kwayo kwemvura uye kuramba mamiriro ekunze.
Kuvandudza Fluidity uye Kuvaka Kuita: chena simende inoda yakakwira fluidity uye kusafanana panguva yekuvaka. HPMC inogona kuvandudza kufanana kweiyo slurry, dzivisa kusaenzana kweiyo chena cement panguva yekuvaka, uye uve nechokwadi chekubata kwekucheka.
(4) kukurumidza-kuomesa simenti
Kukurumidza-kuomesa simende ine chiyero chekukurumidza hydration uye chakakodzera kumapurojekiti ayo anoda kuvakwa nekukurumidza. Iko kushandiswa kweHPMC mukukurumidza-kuomesa simende inonyanya kuratidzwa mu:
Kunonoka nguva yekugara: iyo yekukurumidza hydration yekukurumidza kusimbisa inogona kutungamira kuronga nguva isati yasvika, nepo Hpmc ichigona kunonoka nguva yekugadzika kwenguva, ichiona kuti kuvakwa kwapera munguva pfupi.
Kugadzirisa iyo hydration rate: HPMC inogona kugadzirisa hyment hydration chiyero nekuvandudza iyo visikopa uye rateological zvivakwa zveSement slurry, ichiita kuti ive inochinjika kune zvakasiyana zvekuvaka zvinodiwa.
Simbisa kudzorwa kwenguva yekuvaka: Iko kushandiswa kweHPMC kunogona kuwedzera nguva yakavhurika yeiyo simende, kupa vashandi vekuvaka nguva yakawanda yekugadzirisa uye kuvakwa.
(5) simende rakaderera
Simbe-kupisa-kupisa rinowanzo shandiswa mune yakakura-vhoriyamu mapurojekiti ekudzora kupisa kwakaburitswa panguva yeiyo coment hydration. Basa reHPMC mune yakaderera-kupisa simende inosanganisira:
Kuderedza Hydration Kupisa: Yakapfeka-kupisa simende inowanzoshandiswa mune zviitiko uko hydration kupisa kunoda kudzorwa. HPMC inogona kudzora zvinobudirira kuyerera kweiyo coment paste uye kuderedza kuunganidzwa kwekutanga kwehydration kupisa, nekudaro kudzivirira chizvarwa chemusiyano tembiricha.
Kuvandudza Kuchengeta Kwemvura kweStention: Sezvo simende yakadzika-inopisa inowanzoshandiswa kuridza ruzha rukuru, iyo Kuchengeta kwemvura kunogona kuchengeta iyo SEENT SAME PEIST uye kusimudzira kukura kwesaini yesimba rezvemument.
3. Zvinotangira mukushandiswa kweHPMC
Kunyangwe HPMC inoshanda nemazvo musike, kushandiswa kwayo kuchiri kufanira kufunga nezvezvinhu zvinotevera:
DOSAGE Control: Iyo huwandu hweHPMC yakawedzerwa inoda kuve yakagadzirirwa zvichienderana nerudzi rwe simende uye chaicho zvido. Kana zvakawandisa zvikawedzerwa, zvinogona kukanganisa simba uye kuomesa kwesimu; Kana zvishoma zvishoma zvakawedzerwa, mashandiro aro anogona kunge asina kunyatsogadziriswa.
Kuenderana nedzimwe Admixture: HPMC inogona kudyidzana nedzimwe danho rekurwadzisa (senge mvura inoderedza, etc.), saka formula optimization inodiwa.
Kuchengetedza Mamiriro eStember: Iko kuita kweHPMC mumasimende kunokanganiswa nenzvimbo yekuchengetedza yeSetsi. Naizvozvo, mukuvakwa chaiko, kutarisirwa kunofanirwa kubhadharwa kumamiriro ekuchengetedza eSimende kuti adzivise kutadza kusimba kwesimendi.
Sezvo simiment inowedzera, HPMC inoita basa rakakosha mumhando dzakasiyana dze simenti. Zvinogona kuvandudza zvakanyanya basa rekuvaka uye rekupedzisira mhando nekuvandudza hunhu hwe simende, kunonoka nguva yekugara, uye kuwedzera kuchengetwa kwemvura. Maererano nehunhu hwehunhu hwakasiyana hwemhando dzakasiyana, kusarudzwa zvine musoro kwehuwandu hwekuwedzera uye shandisa nzira yeHPMC inogona kukurudzira kuita kwesimendi uye kuzosangana nezvinodiwa zvakasiyana.
Kutumira Nguva: Kukadzi-15-2025