Focus on Cellulose ethers

Yintoni i-HPMC yodaka lomxube owomileyo?

I-HPMC (i-Hydroxypropyl Methylcellulose) esetyenziswe kwi-dry-mix mortar iyisihlomelo esibalulekileyo sekhemikhali, esisetyenziswa kakhulu njenge-thickener, i-agent egcina amanzi kunye ne-agent-forming agent. I-HPMC yi-ether ye-cellulose engeyo-ionic eyenziwe kwiselulosi yendalo ngokuguqulwa kweekhemikhali. Isetyenziswe ngokubanzi kwizinto zokwakha, ngakumbi kwi-dry-mix mortar.

1. Iimpawu ezisisiseko ze-HPMC
I-HPMC iyikhompawundi yepolymer ngendlela yomgubo omhlophe okanye omhlophe, kunye neempawu zokungabi netyhefu, ukuvumba kunye nokunyibilika okulungileyo. Inokunyibilika emanzini abandayo ukwenza isisombululo se-viscous esicacileyo okanye esincinci, kwaye sinozinzo oluhle kunye nokunamathela. I-HPMC ineempawu ezingezizo i-ionic, ngoko iyakwazi ukuziqhelanisa neentlobo ezahlukeneyo zeendaba, ngakumbi kwiindawo zealkaline. Isenako ukuwugcina umsebenzi wayo kwaye ayinako ukujongana neekhemikhali.

Iimpawu eziphambili zeHPMC ziquka:

Ukugcinwa kwamanzi: Inokugcina ukufuma kwizinto eziphathekayo, ukwandisa ixesha lokumisa, kunye nokuphucula ukulungelelaniswa kokwakhiwa.
Isiphumo sokuqina: Ngokwandisa i-viscosity yodaka, ulwakhiwo lwalo luyaphuculwa ukunqanda ukudilika nokuhamba.
Isiphumo sokuthambisa: Ukuphucula ukusebenza kwezinto kwaye wenze udaka lube lula ngexesha lenkqubo yokwakha.
Ipropathi yokwenza ifilimu: Ngexesha lokumisa udaka, ifilimu efanayo inokuqulunqwa, enceda ukuphucula amandla ezinto eziphathekayo.

2. Indima ye-HPMC kumdaka oxutywe owomileyo
Kwiiprojekthi zolwakhiwo, udaka oluxubeneyo olomileyo (olwaziwa ngokuba yi-premixed mortar) ngumgubo owomileyo owenziwe ngokuchanekileyo kumzi-mveliso. Ngexesha lokwakha, kufuneka ixutywe kuphela ngamanzi kwindawo. I-HPMC yongezwa rhoqo ukuphucula ukusebenza kwayo yokwakha, ukwandisa ixesha lokusebenza kunye nokuphucula umgangatho wemveliso yokugqibela. Ngokukodwa, indima ye-HPMC kudaka oluxubeneyo olomileyo lubandakanya la manqaku alandelayo:

Ukuphucula ukugcinwa kwamanzi
Ngodaka, ukuhanjiswa okufanayo kunye nokugcinwa kwamanzi kuyisitshixo sokuqinisekisa amandla ayo, ukusebenza ngokubambisana kunye nokusebenza. Njengearhente yokugcina amanzi, i-HPMC inokutshixa ngokufanelekileyo amanzi kudaka kwaye yehlise izinga lokulahleka kwamanzi. Oku kubaluleke ngakumbi kwizinto ezifana nesamente kunye negypsum ezifuna ukuphendulwa kwamanzi. Ukuba amanzi alahlekile ngokukhawuleza, izinto eziphathekayo zingenako ukugqiba ukuphendula kwe-hydration, okubangelwa ukuhla kwamandla okanye ukuqhekeka. Ngokukodwa phantsi kobushushu obuphezulu, imeko eyomileyo okanye efunxa kakhulu, isiphumo sokugcinwa kwamanzi se-HPMC sinokuphucula kakhulu ukusebenza kolwakhiwo kunye nomgangatho wemveliso ogqityiweyo wodaka.

Ukuphucula ukusebenza kolwakhiwo
Ukusebenza kodaka kuchaphazela ngokuthe ngqo ukukhululeka komsebenzi ngexesha lenkqubo yokwakha. I-HPMC iphucula i-viscosity kunye nokuthambisa kodaka, okwenza kube lula ukusebenza ngexesha lenkqubo yokwakha. Nokuba ikhutshiwe, isasazeke okanye ifafaziwe, udaka olune-HPMC lunokuba lula ngakumbi kwaye ludityaniswe ngokulinganayo kumphezulu wokwakha, ngaloo ndlela kuphuculwe ukusebenza kakuhle kolwakhiwo kunye nokunciphisa inkunkuma yezinto.

Ukuphucula ukubambelela kunye neempawu ezichasayo
Isiphumo esityebileyo se-HPMC sivumela udaka ukuba lubambelele ngokuqinileyo ngexesha lolwakhiwo lwe-facade kwaye aluqhelekanga ukudilika okanye ukutyibilika. Oku kubaluleke ngakumbi kwiimeko zesicelo ezifana nodaka oludibanisa iithayile, udaka lokutyabeka eludongeni lwangaphakathi nangaphandle. Ngokukodwa xa kusakhiwa umaleko wodaka olutyebileyo, ukusebenza kokuncamathela kwe-HPMC kunokuqinisekisa ukuzinza kodaka kwaye uphephe ingxaki yokulahla umaleko wodaka ngenxa yobunzima obufileyo obugqithisileyo.

Yandisa ixesha elivulekileyo
Kulwakhiwo oluyinyani, ixesha elivulekileyo (oko kukuthi, ixesha lokusebenza) lodaka libalulekile ukuqinisekisa umgangatho wokwakha. Ngokukodwa kwiimeko zolwakhiwo olukhulu, ukuba udaka loma ngokukhawuleza kakhulu, kunokuba nzima kubasebenzi bokwakha ukuba bagqibezele yonke imisebenzi, okukhokelela kumgangatho ongalinganiyo womphezulu. I-HPMC inokwandisa ixesha elivulekileyo lodaka, iqinisekisa ukuba abasebenzi bokwakha banexesha elaneleyo lokulungelelanisa nokusebenza.

3. Izinto ezilungileyo zokusetyenziswa kweHPMC
Ukuguquguquka okubanzi
I-HPMC ingasetyenziswa ngokubanzi kwiindidi ezahlukeneyo zodaka oluxubeneyo olomileyo, olufana nodaka lwe-masonry, udaka lokutyabeka, i-tile yokuncamathelisa, i-self-leveling mortar, njl. indima yokuzinzisa.

Ukongezwa okuphantsi, ukusebenza kakuhle okuphezulu
Isixa se-HPMC ngokuqhelekileyo sincinci (malunga ne-0.1% -0.5% ye-powder eyomileyo iyonke), kodwa umphumo wayo wokuphucula ukusebenza ubaluleke kakhulu. Oku kuthetha ukuba umsebenzi wokwakha kunye nomgangatho wodaka unokuphuculwa kakhulu ngaphandle kokunyusa kakhulu iindleko.

Ilungele indalo kwaye ayinayo ityhefu
I-HPMC ngokwayo ayinayo ityhefu, ayinavumba, kwaye ayingcolisi indalo. Ngokwandiswa kolwazi lokusingqongileyo, imfuno yezixhobo zokwakha eziluhlaza iyaqhubeka nokukhula. I-HPMC, njengezongezo zekhemikhali ezikhuselekileyo nezinobuhlobo nokusingqongileyo, ihlangabezana nemigangatho yokusingqongileyo yezinto zokwakha zale mihla.

4. Imiqathango yokusetyenziswa
Nangona i-HPMC idlala indima ebalulekileyo kudaka oluxutyiweyo olomileyo, la manqaku alandelayo kufuneka aqatshelwe ngexesha lokusetyenziswa:

Ulawulo lokunyibilika: I-HPMC kufuneka yongezwe ngokuthe ngcembe emanzini ngexesha lokuvuselela ukuphepha ukudibanisa ngenxa yokutshatyalaliswa okungalinganiyo, okuchaphazela umphumo wokugqibela wodaka.

Impembelelo yobushushu: Ukunyibilika kwe-HPMC kunokuchatshazelwa bubushushu. Ukushisa kwamanzi aphezulu kakhulu okanye aphantsi kakhulu kunokubangela utshintsho kwisantya sokuchithwa, ngaloo ndlela kuchaphazela ixesha lokwakha kunye nesiphumo sodaka.

Ukudibanisa nezinye izongezo: I-HPMC idla ngokusetyenziswa kunye nezinye izongezo zekhemikhali, ezifana nezinciphisi zamanzi, i-air entraining agents, njl. Xa kuyilwa ifomula, ingqalelo kufuneka ihlawulwe kwimpembelelo ehambelanayo phakathi kwamacandelo ukuphepha ukusabela okubi.

Ukusetyenziswa kwe-HPMC kudaka oluxutyiweyo olomileyo kuneenzuzo ezibalulekileyo. Inokuphucula ukusebenza okubanzi kodaka ngokuphucula ukugcinwa kwamanzi, ukwandisa ukusebenza kolwakhiwo, kunye nokuphucula ukubambelela. Ngokuphuculwa kobuchule bokwakha kunye neemfuno zomgangatho kwishishini lokwakha, i-HPMC, njengesongezo esibalulekileyo sekhemikhali, iya kudlala indima ebaluleke kakhulu kumdaka oxubeneyo owomileyo.


Ixesha lokuposa: Oct-09-2024
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