I-HPMC kuma-joint fillers

I-Hydroxypropyl Methylcellulose (HPMC)iyi-non-ionic cellulose ether esetshenziswa kabanzi ezintweni zokwakha, ikakhulukazi kuma-joint filler (i-Joint Filler noma i-Tile Grout). Njengenye yezithasiselo ezibalulekile, i-HPMC idlala indima engenakuphikwa. Izinzuzo zayo eziyinhloko zifaka phakathi ukugcinwa kwamanzi okuhle kakhulu, ukuqina, ukuthambisa kanye nokusebenza okuthuthukisiwe kokwakhiwa.

1. Ukubuka Okuyisisekelo Kwama-Joint Fillers

Ama-joint filler asetshenziswa kakhulu ukugcwalisa izikhala phakathi kwamathayili namatshe. Awagcini nje ngokudlala indima yokuhlobisa, kodwa futhi anemisebenzi yokungangeni manzi, evikela ukubola kanye neyokuvikela ukuqhekeka. Ama-joint filler avamile afaka phakathi izinhlobo ezisekelwe kusimende, ezisekelwe ku-epoxy resin kanye nezinhlobo eziguquliwe nge-polymer. Ama-joint filler asekelwe kusimende asetshenziswa kabanzi ngenxa yezindleko zawo eziphansi kanye nokusebenza kwawo kabanzi.

Kodwa-ke, izigcwalisi zamalunga ezisekelwe kusimende zendabuko zinezinkinga ezifana nokuqhekeka okulula, ukunamathela okunganele kanye nomuzwa omubi wokwakhiwa. Ukuze kuthuthukiswe la maphutha, izithasiselo ze-cellulose ether ezifana ne-HPMC zivame ukungezwa kufomula.

2. Indima ye-HPMC kuma-joint fillers

2.1. Ukugcinwa kwamanzi okuthuthukisiwe

I-HPMC inezakhiwo eziqinile kakhulu zokugcina amanzi, ezingavimba umswakama ngempumelelo, zivimbele usimende ekulahlekelweni amanzi ngokushesha, futhi zithuthukise izinga lokumanzisa usimende, ngaleyo ndlela zithuthukise amandla okubopha kanye nokumelana nokuqhekeka kwama-filler amalunga. Lokhu kubaluleke kakhulu ekwakheni okunezingqimba ezincane kanye nezindawo ezomile.

2.2. Ukusebenza okuthuthukisiwe kokwakha

Ngesikhathi senqubo yokwakha, i-HPMC ingathuthukisa kakhulu ukugcotshwa kanye nokugeleza komkhiqizo, okwenza kube lula ukusabalalisa nokugcwalisa udaka, kuncishiswe ubunzima bokwakha. Ngesikhathi esifanayo, ingavimbela futhi udaka ukuthi lome ngaphambi kwesikhathi, yandise isikhathi sokusebenza kanye nesikhathi sokulungisa.

2.3. Ukulawulwa kokujiya kanye ne-thixotropy

I-HPMC yakha isixazululo se-colloidal esifanayo, okwenza i-slurry ihambisane kahle futhi ibe ne-thixotropy, okwenza kube lula ukuyisebenzisa i-joint filler futhi igcine ukusebenza kahle kokulenga okuqondile, igwema izinkinga ezifana nokugoba nokushelela ngesikhathi sokwakha.

2.4. Ukunamathela okuthuthukisiwe

Inani elifanele le-HPMC lingathuthukisa ukunamathelana phakathi kwe-slurry kanye nomphetho wethayela kanye ne-substrate, ngaleyo ndlela kuthuthukiswe ukuzinza kwesakhiwo sonke futhi kuncishiswe ukuqhekeka nokuwa kamuva.

2.5. Ukulwa nokuqhekeka kanye nokulwa nokuncipha

I-HPMC inganciphisa kakhulu izinga lokuncipha ngokugcina amanzi nokuthuthukisa ubuningi besakhiwo, futhi inciphise ingozi yokuqhekeka okubangelwa ukulahleka kwamanzi nokuncipha ngemva kokufaka i-caulking. Ifaneleka kakhulu ukusetshenziswa ezindaweni ezinezinguquko ezivamile zokushisa nomswakama.

2.6. Ukumelana nokuqhwa okuthuthukisiwe kanye nokuqina

Ezindaweni eziphansi zokushisa, i-HPMC ingasiza i-caulking agent ukuthi igcine ukuguquguquka okuthile futhi ivimbele umonakalo wokuqandisa; isakhiwo sayo esizinzile sama-molecule singathuthukisa nokuzinza kwesikhathi eside kwe-caulking agent.

3. Izincomo zokusetshenziswa

3.1. Inani elinconyiwe lokwengeza

Inani elinconywayo le-HPMC ku-joint filler ngokuvamile lingu-0.2% ~ 0.5%, elingalungiswa ngokufanele ngokwefomula yomkhiqizo. Inani eliningi kakhulu lokwengeza lingaholela ekunciphiseni isivinini sokomisa namandla, ngakho ifomula kufanele ilungiselelwe kahle ngokuhambisana nokuhlolwa.

3.2. Indlela yokuhlakazeka nokuhlakazeka

I-HPMC kufanele ihlakazwe kusengaphambili ezintweni ezomile uma isetshenziswa ukuze kugwenywe ukuhlangana okubangelwa ukungezwa ngqo emanzini; kunconywa ukuthi uyifake emanzini ngaphansi kwezimo zokuxuba ngesivinini esikhulu ukuze kukhuthazwe ukuncibilika okufanayo.

3.3. Umphumela wokubambisana nezinye izithasiselo

I-HPMC ingasetshenziswa ngokuhlanganiswa ne-starch ether, i-latex powder ephinde ihlakazeke, i-water reducer, njll. ukuze kufezwe ukusebenza okungcono okuphelele. Ikakhulukazi, uma isetshenziswa ngokuhlanganiswa ne-RDP (i-latex powder), ingathuthukisa kakhulu ukuguquguquka kanye namandla okubopha.

4. Izincomo zokukhetha i-HPMC

I-HPMC inezinhlobo ezahlukene, futhi ukusebenza kwayo kuthinteka yizinga lokushintshana (DS), i-viscosity, usayizi wezinhlayiya kanye nokuhlakazeka. Kuma-joint fillers, kunconywa ukukhetha izinhlobo ezilandelayo ze-HPMC:

I-viscosity ephakathi nendawo nephansi (40,000~100,000 mPa·s): uma kucatshangelwa ukwakhiwa kanye nokugcinwa kwamanzi, kufanelekile ekwakhiweni okuningi.

Uhlobo olusheshayo (uhlobo lokwelashwa kobuso): lufanele ukuhlakazeka okusheshayo kanye nesikhathi esincishisiwe sokuncibilika.

Umkhiqizo oshintsha kakhulu: ukugcinwa kwamanzi okuqinile, okufanele ukwakhiwa ezindaweni ezinokushisa okuphezulu noma ezomile.

Njengesengezo esibalulekile esisebenzayo kuizigcwalisi zamalunga ze-HPMCAkugcini nje ngokuthuthukisa kakhulu ukusebenza kokwakhiwa kanye nokuphila kwenkonzo kwezinto zokwakha, kodwa futhi kuthuthukisa kakhulu ikhwalithi iyonke kanye nolwazi lomsebenzisi lomkhiqizo. Ngokuthuthuka kwezinto zokwakha eziluhlaza nezinobungani nemvelo, i-HPMC izodlala indima ebaluleke kakhulu kuma-joint fillers kanye namanye amakhemikhali okwakha ngenxa yezinzuzo zayo ezifana ne-bio-based, non-toxic kanye ne-degradable.