Hydroxypropyl methylcellulose (HPMC) ndeye multifunctional polymer inoshandiswa zvakanyanya mumaindasitiri akasiyana siyana kusanganisira kuvaka. Mukuumbwa kweputty, HPMC inoshandisa mabasa akasiyana-siyana, kusanganisira kuwedzera kushanda, kuvandudza kunamatira, kudzora kuchengetwa kwemvura, uye kugadzirisa zvinhu zvemuchina.
Putty maumbirwo anoita basa rakakosha mukuvaka sechinhu chinogoneka chinozadza mapundu, chinotsvedzerera nzvimbo, uye chinopa hwaro hwakafanana hwependi uye machira. Hydroxypropyl methylcellulose (HPMC) ndechimwe chezvinhu zvakakosha zvinoshandiswa mukuumbwa kweputty nekuda kwekusiyana kwayo uye kuita kwakasiyana-siyana.
1.HPMC makemikari ehupfumi
Hydroxypropylmethylcellulose is a semi-synthetic polymer inotorwa kubva ku cellulose. Iyo inoratidzirwa neyakasiyana chimiro, inosanganisira cellulose maketani akabatana nehydroxypropyl uye methyl mapoka. Dhigirii rekutsiviwa kwemapoka aya rinotarisa zvimiro zveHPMC, kusanganisira solubility, viscosity uye kugona kugadzira firimu. Kazhinji, HPMC inoshandiswa mune putty formulations inowanikwa pakati kusvika yakakwira viscosity mamakisi anopa anodiwa rheological properties.
2. Iyo nzira yekuita kwe putty formula
Vandudza kushanda
HPMC inoshanda seyakakora uye rheology modhifita yekuvandudza kushanda kwe putty maumbirwo. Iyo polymer mamorekuru anonamira uye anoita matatu-dimensional network, iyo inopa viscosity uye inodzivirira yakasimba zvimedu kubva pakugadzika. Izvi zvinogonesa kunyange kugovera uye nyore kushandisa kweiyo putty, ichiibvumira kupararira uye kuumbwa zvakanaka pasina kuwandisa sagging kana kudonha.
Kuvandudza kunamatira
Adhesion chinhu chakakosha mukugadzirwa kweputty sezvo ichitarisa kusimba kwechisungo pakati pe putty ne substrate. HPMC inosimudzira kunamatira nekugadzira firimu rakatetepa pane substrate pamusoro, inosimudzira mechaniki kupindirana uye kuwedzera nzvimbo yekubatana pakati peputty uye substrate. Pamusoro pezvo, iyo hydrophilic chimiro cheHPMC inobvumira kuti iwirirane ne putty matrices uye substrates, inosimudzira kunamatira kunyangwe pane inonetsa nzvimbo.
kudzora kwekuchengetedza mvura
Kuchengetedzwa kwemvura kwakakosha pakurapa kwakakodzera uye kuomeswa kweputty formulations. HPMC inoshanda sechinhu chinochengetedza mvura nekutora uye kuchengetedza unyoro mukati meiyo molecular chimiro. Izvi zvinodzivirira kukurumidza kubuda kwemvura kubva kune putty matrix, kuve nechokwadi chekushanda kwenguva refu uye kuwana yakakwana hydration ye simenti zvinongedzo. Kuchengetedzwa kwemvura kunodzorwa zvakare kunoderedza shrinkage uye kuputika panguva yekuomesa, kuvandudza kusimba uye kupera kwepamusoro.
Mechanical performance optimization
HPMC inovandudza ma mechanic properties ye putty formulations nekusimbisa matrix nekuvandudza kubatana. Iyo polymer inoumba hydrogen zvisungo pamwe nezvimwe zvinongedzo mu putty, ichiwedzera simba rayo, kushanduka uye kukanganisa kuramba. Pamusoro pezvo, kugona kwekugadzira firimu reHPMC kunogadzira chipingamupinyi chinodzivirira iyo putty kubva kumatambudziko ekunze uye mamiriro ezvakatipoteredza, ichiwedzera kuwedzera kusimba kwayo uye hupenyu hurefu.
3.Kufurira kweHPMC pane putty performance
Rheological properties
HPMC inokanganisa zvakanyanya rheological maitiro e putty formulations, inokanganisa viscosity, thixotropy uye kuyerera zvivakwa. Kuiswa kwepolymer, huremu hwemamorekuru uye dhigirii rekutsiva zvinotarisisa dhigirii reviscosity gadziriso, zvichibvumira vanogadzira kuti vagadzirise rheological zvimiro kune chaiyo application zvinodiwa. Kugadziriswa kwakaringana kweHPMC dosage inova nechokwadi chekuvaka uye kuita kwekushandisa.
adhesion
Kuvapo kweHPMC kunowedzera kusimba kwechisungo chekuumbwa kweputty, zvichiita kuti kuwedzere kunamatira kune akasiyana-siyana substrates anosanganisira kongiri, huni, simbi uye masonry. MaFormulators anogona kugadzirisa HPMC giredhi uye kutarisisa kuti uwane inodiwa yekubatanidza zvivakwa, kuve nechokwadi chekuenderana nezvinhu zvakasiyana zvepasi uye mamiriro ezvakatipoteredza. Kugadzirira kwepamusoro kwepamusoro uye maitiro ekushandisa anogona kuzadzisa chisungo-yekusimudzira mhedzisiro yeHPMC kuti iwedzere kusimba kwebhondi uye kusimba kwenguva refu.
vapanduki vemvura
HPMC inobatsira kuvandudza kudzivirira kwemvura kwe putty formulations nekudzora kuchengetwa kwemvura uye kuderedza mvura permeability. Iyo polymer inoumba hydrophilic firimu inodzivirira kupinda kwemvura mukati me putty matrix, kudzivirira kuzvimba, kushatisa uye kurasikirwa kwemishini. Kusarudzwa kwakaringana kwemagiredhi eHPMC uye madhizaini ekugadzira anogona kuwedzera kuramba kwemvura, zvichiita kuti putty ikwane mukati nekunze kwekushandisa kwakafumurwa hunyoro.
4. Mechanical simba uye kusimba
Kubatanidza HPMC mune putty maumbirwo kunowedzera simba remuchina, kusimba, uye kuramba kutsemuka, shrinkage, uye mamiriro ekunze. Iyo polymer inoshanda senge inosimbisa mumiriri, inosimbisa iyo putty matrix uye inovandudza kubatana. Pamusoro pezvo, kugona kweHPMC kudzora kuchengetwa kwemvura uye kukurudzira kurapwa kwakakodzera kunobatsira kuwedzera simba rebhondi uye kushanda kwenguva refu. Maformulators anogona kukwirisa HPMC dosage uye ekugadzirisa maparamendi kuti awane yakaringana chiyero chemakanika zvivakwa uye kusimba.
5. Mafungiro anoshanda ekugadzirisa
Kusarudzwa kwemagiredhi eHPMC
Pakusarudza giredhi rakakodzera reHPMC rekugadzira putty, vagadziri vanofanirwa kufunga zvakasiyana siyana, zvinosanganisira viscosity, dhigirii rekutsiva, uye kuenderana nezvimwe zvinongedzo. Yepamusoro viscosity mamakisi akakodzera kune akakora putties uye vertical application, nepo yakaderera viscosity mamakisi akakodzera kune akapfava mameseji uye nyore kupararira. Vagadziri vanofanirwawo kuona kuenderana pakati peHPMC uye zvimwe zvekuwedzera senge mafirita, pigment, uye zvinochengetedza kudzivirira nyaya dzekuenderana uye kuderera kwekuita.
dose optimization
Huwandu hwakakwana hweHPMC hunoenderana nezvinhu zvakaita sezvinodiwa zvivakwa, nzira yekushandisa, substrate mhando uye mamiriro ezvakatipoteredza. Vagadziri vanofanira kuita bvunzo dzakakwana kuti vaone iyo yakaderera inoshanda dosi inowana kuita kwaunoda pasina kukanganisa mutengo-kubudirira. Kunyanya kushandiswa kweHPMC kunogona kukonzera viscosity yakawandisa, kuomerwa kwekushandisa, uye nguva yekuwomesa kwenguva refu, nepo kusashandiswa kunogona kukonzera kusakwana kwekudzora rheology uye kuderedzwa kwekuita.
6. Kuenderana nezvimwe zvinowedzera
HPMC inodyidzana neakasiyana-siyana ekuwedzera anowanzo shandiswa mune putty maumbirwo, akadai thickeners, dispersants uye preservatives. Vagadziri vanofanira kunyatsoongorora kuenderana uye kuwirirana kweHPMC nezvimwe zvinongedzo kuti ive nechokwadi chekushanda kwakakwana uye kugadzikana. Kuyedzwa kwekuenderana, kusanganisira rheological ongororo uye yenguva refu yekuchengetedza kuyedzwa, kunobatsira kuona chero chingangoitika chekudyidzana kana nyaya dzekugadzira pakutanga kwemaitiro ekusimudzira kuitira kuti zvigadziriso uye optimization iitwe.
7. Michina yekushandisa
Maitiro ekushandisa akakodzera akakosha kuti uwedzere kuita kweputty mafomati ane HPMC. Vagadziri vanofanira kupa mirairo yakajeka uye nhungamiro yekugadzirira kwepamusoro, kusanganisa, kushandisa uye kurapa kuti ive nechokwadi chemhedzisiro. Kuti uwane kusungirirwa kunodiwa, kutsetseka uye kusimba, maitiro akadai sepriming, substrate conditioning uye akawanda-layer coatings anogona kudiwa. Kudzidziswa uye kudzidziswa kwevashandi vekuvaka kunoenderera mberi kunovimbisa kuenderana, kwemhando yepamusoro mhedzisiro, kuderedza rework uye nyaya dzewaranti.
Nguva yekutumira: Feb-22-2024