Nhanganyaya
Hydroxypropyl Methylcellulose (HPMC) isiri-ionic cellulose ether inotorwa kubva kune yakasikwa cellulose. Yakave chinhu chinodiwa chekuwedzera muindasitiri yekuvaka, kunyanya mukugadzira simende dhaka. HPMC inokwidziridza zvimiro zvedhaka, zvichibatsira mukuvandudza kushanda, kuchengetedza mvura, kunamatira, uye simba remuchina.
Kuumbwa uye Zvivakwa zveHPMC
HPMC inogadzirwa ne etherification ye cellulose ine methyl chloride uye propylene oxide. Iyo inokonzeresa polymer inoratidzirwa nekunyungudika kwayo kwemvura, viscosity-inogadzirisa zvivakwa, uye kugona kugadzira firimu. Aya maitiro anoita kuti HPMC ive yakanakira yekuwedzera yekushandura rheological zvimiro zvesimende-based zvinhu.
Benefits dzeHPMC muCement Mortar
1. Kuvandudzwa Kwekushanda
Imwe yemabhenefiti ekutanga eHPMC mudhaka sesimende kugona kwayo kusimudzira kushanda. HPMC inoshanda semafuta pakati pemasimende, kuderedza kukweshera uye kubvumira kushandiswa kwakapfava. Izvi zvakagadziridzwa kushanda zvinoita kuti zvive nyore kupararira uye kuenzana kwedhaka, zvakakosha kuti uwane yunifomu kupera.
2. Kuchengetedzwa kweMvura kwakasimbiswa
HPMC inovandudza zvakanyanya simba rekuchengetedza mvura yesamende dhaka. Kuchengetwa kwemvura kwakakosha panguva yekurapa sezvo ichigonesa hydration yakakwana yemasimende, zvichitungamira mukuvandudzika kwesimba. Nekuchengetedza mvura, HPMC inodzivirira kuoma nguva isati yakwana uye inoderedza njodzi yekutsemuka uye kuderera mudhaka.
3. Kuwedzera Kunamatira
Kunamatira kwakakosha pakusimba uye kuita kwesamende dhaka. HPMC inonamira zvivakwa zvedhaka nekuvandudza simba rayo rekubatanidza kune akasiyana substrates, sezvidhinha, matombo, uye kongiri nzvimbo. Uku kuwedzera kwekunamatira kunovimbisa kuti dhaka rinoramba rakasimba pasi pekunetseka uye mamiriro ezvakatipoteredza.
4. Mechanical Simba
Iko kubatanidzwa kweHPMC mudhaka resimende kunobatsira pakusimba kwayo kwemuchina. Nekugadzirisa iyo hydration maitiro uye kuvandudza iyo microstructure yedhaka, HPMC inobatsira kuwana yakakwirira compressive uye flexural simba. Uku kukwidziridzwa kwakakosha kune zvimiro zvekushandisa uko kutakurwa kwemutoro kuri kunetseka.
Maitiro eHPMC Chiito muSimende Mota
1. Viscosity Modification
HPMC inogadzirisa viscosity yemusanganiswa wevhu, ichiita kuti iwedzere kubatana uye nyore kubata. Iyo polymer cheni yeHPMC inodyidzana nemamorekuru emvura, ichigadzira gel-senge chimiro chinowedzera viscosity yechikamu chemvura. Iyi gelation effect inobatsira mukuchengetedza homogeneity yedhaka uye inodzivirira kupatsanurwa kwezvikamu.
2. Kuchengeta Mvura
HPMC's hydrophilic nature inobvumira kuti itore uye ichengetedze yakakura huwandu hwemvura. Kana yawedzerwa kudhaka resimende, HPMC inogadzira chipingamupinyi chinoderedza kuwanda kwemvura. Uku kuvapo kwenguva refu kwemvura kunovimbisa kuenderera mberi kwe hydration ye simenti zvimedu, izvo zvakakosha pakuvandudzwa kwesimba uye kusimba mudhaka.
3. Kugadzira Mafirimu
Pakuomeswa, HPMC inoumba inoenderera, inochinjika firimu mukati medhaka matrix. Iyi firimu inosimudzira kubatana pakati pesimende paste uye aggregates, inovandudza kutendeseka kwese kwedhaka. Iyi firimu inobatsirawo kuti dhaka rirambe richipinda mumvura uye mamiriro ekunze.
Mafungiro Anoshanda Mukushandiswa kweHPMC
1. Dosage
Iyo yakakwana dosage yeHPMC mudhaka simende inosiyana zvichienderana neiyo chaiyo application uye inodiwa zvivakwa. Kazhinji, kuyerwa kunotangira pa0.1% kusvika 0.5% nekurema kwesamende. Madosi epamusoro anogona kudikanwa kune akakosha maapplication, senge ega-leveling madhaka kana mataira anonamira.
2. Kusanganisa Maitiro
Maitiro ekusanganisa akakosha kuti ave nechokwadi chekugovera yunifomu yeHPMC mudhaka. Dry kusanganisa HPMC nezvimwe zvinhu zvehupfu usati wawedzera mvura zvinokurudzirwa. Izvi zvinovimbisa kuti iyo polymer yakaparadzirwa zvakaenzana uye inogadziriswa kana yasangana nemvura.
3. Kuenderana nemamwe maAdditives
HPMC inowirirana nehuwandu hwakawanda hwezvimwe zvinowedzera zvinoshandiswa mumatope esimende, senge superplasticizers, accelerators, uye retarders. Nekudaro, zvakakosha kuita bvunzo dzekuenderana kuti uve nechokwadi chekuti zvakasanganiswa mhedzisiro yezvakawanda zvinowedzera hazvikanganisi kuita kwedhaka.
Zvishandiso zveHPMC muMarudzi Akasiyana eSimende Mota
1. Tile Adhesives
Mumataira anonamira, HPMC inovandudza yakavhurika nguva, kutsvedza kuramba, uye kusimba kwekunamatira. Iyo yakagadziridzwa kuchengetedza kwemvura inovimbisa kuti iyo inonamira inoramba ichishanda kwenguva yakareba, ichibvumira kunyatsoiswa mataira.
2. Render uye Plaster Motars
Yekupa uye plaster dhaka, HPMC inopa yakanakisa kushanda uye inoderedza njodzi yekudonha. Iyo yakagadziridzwa yekunamatira uye kuchengetwa kwemvura inobatsira pakupera kwakatsetseka, kwakasimba.
3 Self-Leveling Motars
Madhaka ekuzvimisa anobatsirwa kubva kune viscosity-inogadzirisa zvivakwa zveHPMC, iyo inovimbisa yunifomu, nhanho yepamusoro. Iyo polymer inobatsira kuchengetedza kuyerera kwedhaka uku ichidzivirira kupatsanurwa uye kubuda ropa.
4. Gadzirisa Madhaka
Mukugadzirisa madhaka, HPMC inosimudzira kunamatira kune iripo substrates uye inovandudza ma mechanika enzvimbo dzakagadziriswa. Iyo yekuchengeta mvura yeHPMC inovimbisa kurapwa kwakaringana uye kusimba kwenguva refu.
HPMC ndeyekuwedzeredza kwakasiyana-siyana iyo inosimudzira zvakanyanya mashandiro esimende. Mabhenefiti ayo, anosanganisira kuvandudzwa kwekushanda, kuchengetwa kwemvura, kunamatira, uye simba remuchina, inoita kuti ive chinhu chakakosha mumabasa akasiyana ekuvaka. Kunzwisisa mashandiro eHPMC chiito uye kufunga zvinoshanda senge dosage uye kuenderana kwakakosha pakugadzirisa kushandiswa kwayo mumatope esimende. Sezvo indasitiri yekuvaka iri kuramba ichishanduka, kushandiswa kweHPMC kunogona kuwedzera, kufambisa kufambira mberi mumhando uye kusimba kwesimende-yakavakirwa zvinhu.
Nguva yekutumira: May-24-2024