Exterior Insulation and Finishing Systems (EIFS) madhaka anoita basa rakakosha mukupa insulation, kudzivirira mamiriro ekunze uye aesthetics kune zvivakwa.Hydroxypropyl methylcellulose (HPMC) inowanzoshandiswa mumatope eEIFS nekuda kwekusiyana-siyana, kuchengetedza mvura uye kukwanisa kugadzirisa kushanda.
1. Nhanganyaya kune EIFS dhaka:
EIFS dhaka chinhu chakaumbwa chinoshandiswa kuisa uye kupedzisa kwekunze kwemadziro masisitimu.
Kazhinji ine simende binder, aggregates, fibers, additives uye mvura.
EIFS dhaka inogona kushandiswa senge yekutanga yekujoinha mapaneru ekudzivirira uye sejasi repamusoro kuti riwedzere kunaka uye kudzivirira mamiriro ekunze.
2.Hydroxypropylmethylcellulose (HPMC):
HPMC is a cellulose ether inotorwa kubva kune zvakasikwa polymer cellulose.
Inoshandiswa zvakanyanya mukuvaka zvivakwa zvekuchengetedza mvura, kukora uye kushanda-kusimudzira zvinhu.
MuEIFS matope, HPMC inoshanda seye rheology modifier, inovandudza kunamatira, kubatana uye sag kuramba.
3. Formula ingredients:
a.Cement-based binder:
Portland Cement: Inopa simba uye kunamatira.
Simende yakasanganiswa (semuenzaniso Portland limestone simende): Inowedzera kusimba uye inoderedza kabhoni tsoka.
b.Aggregation:
Jecha: Huwandu uye magadzirirwo eakaunganidzwa akakwana.
Huremu hweaggregates (semuenzaniso yakawedzera perlite): Kuvandudza zvivakwa zvekupisa.
C. fiber:
Alkali-resistant fiberglass: Inokwidziridza simba rekusimba uye kutsemuka kuramba.
d.Additives:
HPMC: kuchengetedza mvura, kushanda, uye sag kuramba.
Air-entraining agent: Kuvandudza kutonhora-kunyunguduka kwekudzivirira.
Retarder: Inodzora kuseta nguva munzvimbo dzinopisa.
Polymer Modifiers: Wedzera kuchinjika uye kusimba.
e.Mvura: Yakakosha kune hydration uye kushanda.
4. Hunhu hweHPMC mudhaka reEIFS:
a.Kuchengetedza Mvura: HPMC inotora uye inochengeta mvura, ichiva nechokwadi chekugara kwenguva refu uye kuvandudza kushanda.
b.Kushanda: HPMC inopa dhaka kutsvedzerera uye kuenderana, zvichiita kuti zvive nyore kuvaka.
C. Anti-sag: HPMC inobatsira kudzivirira dhaka kubva pakudonha kana kunyura panzvimbo yakatwasuka, ichiva nechokwadi chekukora yunifomu.
d.Adhesion: HPMC inosimudzira kunamatira pakati pedhaka uye substrate, kukurudzira kunamatira kwenguva refu uye kusimba.
e.Crack kuramba: HPMC inovandudza kuchinjika uye kusimba kwechisungo chedhaka uye inoderedza njodzi yekutsemuka.
5. Kusanganisa nzira:
a.Pre-wet nzira:
Pre-nyorovesa HPMC mugaba rakachena rine 70-80% yemvura yese yakasanganiswa.
Nyatsosanganisa yakaoma zvinwiwa (sement, aggregate, fibers) mumusanganisi.
Zvishoma nezvishoma wedzera iyo premoistened HPMC mhinduro uchikurudzira kusvika kuenderana kunodiwa kwasvika.
Gadzirisa mvura yemukati sezvinodiwa kuti uwane kushanda kwaunoda.
b.Dry kusanganisa nzira:
Dry musanganiswa HPMC pamwe yakaoma zvokubikisa (simende, aggregates, faibha) ari musanganisi.
Zvishoma nezvishoma wedzera mvura uchikurunga kusvikira kuwirirana kunodiwa kwasvikwa.
Sanganisa zvakakwana kuti uve nechokwadi chekugovera HPMC uye zvimwe zvinongedzo.
C. Compatibility Testing: Kuenderana kuedza neHPMC uye zvimwe zvinowedzera kuti zvive nechokwadi chekubatana kwakakodzera uye kushanda.
6. Tekinoroji yekushandisa:
a.Kugadzirira kwe substrate: Ita shuwa kuti substrate yakachena, yakaoma uye isina zvinosvibisa.
b.Kutanga application:
Isa EIFS Mortar Primer kune substrate uchishandisa trowel kana midziyo yekupfapfaidza.
Ita shuwa kuti ukobvu hwakaenzana uye kuvharika kwakanaka, kunyanya kutenderedza makona nemakona.
Isai bhodhi rekudzivirira mudhaka rakanyorova uye bvumira nguva yakakwana yekurapa.
C. Topcoat Application:
Isa dhaka retopcoat reEIFS pamusoro pemushonga wapora uchishandisa trowel kana midziyo yekupfapfaidza.
Mavara kana kupedzisa nzvimbo sezvaunoda, kuchenjerera kuti uwane kufanana uye aesthetics.
Poresa topcoat maererano nekurudziro yemugadziri kuti uichengetedze kubva kune yakaoma mamiriro ekunze.
7. Kudzora kwemhando uye kuyedzwa:
a.Consistency: Tarisa kuenderana kwedhaka mukati memusanganiswa uye maitiro ekushandisa kuti uve nechokwadi chekufanana.
b.Adhesion: Adhesion bvunzo inoitwa kuti iongorore kusimba kwechisungo pakati pedhaka uye substrate.
C. Kushanda Kwekushanda: Ongorora kushanda kuburikidza nekuongorora kudonha uye kucherechedzwa panguva yekuvaka.
d.Durability: Ita durability bvunzo, kusanganisira chando-thaw kutenderera uye kudzivirira mvura, kuongorora kushanda kwenguva refu.
Kushandisa HPMC kugadzira EIFS dhaka kunopa akawanda mabhenefiti maererano nekushanda, kunamatira, sag kuramba uye kusimba.Nekunzwisisa zvimiro zveHPMC uye nekutevera kwakaringana kusanganisa uye nzira dzekushandisa, makondirakiti anogona kuwana emhando yepamusoro EIFS kumisikidzwa inosangana nemaitiro ekuita uye kuwedzera kuvaka aesthetics uye hupenyu hurefu.
Nguva yekutumira: Feb-23-2024