I-HPMC kwizizalisi zamalungu

IHydroxypropyl Methylcellulose (HPMC)yi-non-ionic cellulose ether esetyenziswa kakhulu kwizixhobo zokwakha, ingakumbi kwi-joint fillers (Joint Filler okanye iTile Grout). Njengenye yezongezo ezibalulekileyo, i-HPMC idlala indima engenakutshintshwa. Iingenelo zayo eziphambili ziquka ukugcinwa kwamanzi okugqwesileyo, ukuqina, ukuthambisa kunye nokusebenza ngcono kolwakhiwo.

1. Isishwankathelo esiSiseko seeJoint Fillers

Izizalisi ezidibeneyo zisetyenziswa kakhulu ukugcwalisa izikhewu phakathi kweethayile namatye. Azidlali nje kuphela indima yokuhombisa, kodwa zikwanazo nemisebenzi yokungangeni manzi, yokumelana nokungunda kunye neyokuthintela ukuqhekeka. Izizalisi ezidibeneyo eziqhelekileyo ziquka iintlobo ezisekwe kwisamente, ezisekwe kwi-epoxy resin kunye neentlobo eziguqulwe yi-polymer. Izizalisi ezidibeneyo ezisekwe kwisamente zisetyenziswa kakhulu ngenxa yexabiso lazo eliphantsi kunye nokusetyenziswa kwazo ngokubanzi.

Nangona kunjalo, izizalisi zesiqhelo ezisekwe kwisamente zineengxaki ezifana nokuqhekeka okulula, ukunamathela okunganelanga kunye nokuziva ulwakhiwo olubi. Ukuze kuphuculwe ezi ziphene, izongezo ze-cellulose ether ezifana ne-HPMC zihlala zongezwa kwifomyula.

2. Indima ye-HPMC kwizalisa amalungu

2.1. Ukugcinwa kwamanzi okwandisiweyo

I-HPMC ineempawu zokugcina amanzi eziqinileyo kakhulu, ezinokugcina umswakama ungena, zithintele isamente ukuba ingaphulukani namanzi ngokukhawuleza, kwaye ziphucule izinga lokufuma kwesamente, ngaloo ndlela zonyusa amandla okubopha kunye nokumelana nokuqhekeka kwezihlanganisi zamalungu. Oku kubaluleke kakhulu kulwakhiwo oluncinci kunye neendawo ezomileyo.

2.2. Ukuphuculwa kokusebenza kolwakhiwo

Ngexesha lenkqubo yokwakha, i-HPMC inokuphucula kakhulu ukutyeba kunye nokugeleza kwemveliso, yenze kube lula ukusasazeka nokuzalisa udaka, inciphise ubunzima bokwakha. Kwangaxeshanye, inokuthintela udaka ukuba lume ngaphambi kwexesha, inyuse ixesha lokusebenza kunye nexesha lokulungisa.

2.3. Ulawulo lokutyeba kunye ne-thixotropy

I-HPMC yenza isisombululo esifanayo se-colloidal, inika ulusu ukuqina okuhle kunye ne-thixotropy, yenza kube lula ukuyisebenzisa i-joint filler kwaye igcine ukusebenza kakuhle kokuxhoma ngokuthe nkqo, iphephe iingxaki ezinje ngokugoba nokutyibilika ngexesha lokwakha.

2.4. Ukunamathela okuphuculweyo

Isixa esifanelekileyo se-HPMC sinokuphucula ukunamathelana phakathi kodaka kunye nomphetho wethayile kunye ne-substrate, ngaloo ndlela kuphuculwe uzinzo lwesakhiwo siphela kwaye kuncitshiswe ukuqhekeka nokuwa kamva.

2.5. Ukungaqhekeki kunye nokunganciphisi

I-HPMC inokunciphisa kakhulu izinga lokuncipha ngokugcina amanzi nokuphucula uxinano lwesakhiwo, kwaye inciphise umngcipheko wokuqhekeka okubangelwa kukulahleka kwamanzi kunye nokuncipha emva kokufakwa kwe-caulking. Ifanelekile ngokukodwa ukusetyenziswa kwiindawo ezinotshintsho oluqhelekileyo kubushushu kunye nokufuma.

2.6. Ukumelana nokuqandusela okuphucukileyo kunye nokuqina kwayo

Kwiindawo ezishushu kakhulu, i-HPMC inokunceda i-caulking agent ukuba igcine ukuguquguquka okuthile kwaye ithintele umonakalo wokukhenkceza; ulwakhiwo lwayo oluzinzileyo lweemolekyuli lunokuphucula uzinzo lwexesha elide lwe-caulking agent.

3. Iingcebiso zokusetyenziswa

3.1. Isixa esicetyiswayo sokongeza

Isixa esicetyiswayo se-HPMC kwi-joint filler ngokubanzi yi-0.2% ~ 0.5%, enokulungiswa ngokufanelekileyo ngokwefomula yemveliso. Isixa esongeziweyo esiphezulu kakhulu sinokukhokelela ekunciphiseni isantya sokomisa kunye namandla, ngoko ke ifomula kufuneka yenziwe ngcono xa idityaniswe novavanyo.

3.2. Indlela yokuchithachitha nokucoca

I-HPMC kufuneka isasazwe kwangaphambili kwizinto ezomileyo xa isetyenziswa ukuze kuthintelwe ukuhlangana okubangelwa kukufakwa ngqo emanzini; kuyacetyiswa ukuba yongezwe emanzini phantsi kweemeko zokuxukuxa ngesantya esiphezulu ukuze kukhuthazwe ukunyibilika okufanayo.

3.3. Isiphumo sokusebenzisana nezinye izongezo

I-HPMC ingasetyenziswa kunye ne-starch ether, umgubo we-latex ophinda unyibilike, i-water reducer, njl.njl. ukuze kufezekiswe ukusebenza okugqibeleleyo. Ngokukodwa, xa isetyenziswa kunye ne-RDP (umgubo we-latex), inokuphucula kakhulu ukuguquguquka kunye namandla okubopha.

4. Iingcebiso zokukhetha i-HPMC

I-HPMC ineentlobo ngeentlobo, kwaye ukusebenza kwayo kuchaphazeleka bubungakanani bokutshintshwa (DS), uburhabaxa, ubungakanani bamasuntswana kunye nokusasazeka. Kwizizalisi zamalungu, kucetyiswa ukuba ukhethe ezi ntlobo zilandelayo ze-HPMC:

I-viscosity ephakathi nephantsi (40,000~100,000 mPa·s): kuthathelwa ingqalelo ulwakhiwo kunye nokugcinwa kwamanzi, okufanelekileyo kwiifomyula ezininzi.

Uhlobo olukhawulezileyo (uhlobo lonyango lomphezulu): lufanelekile ukusasazeka ngokukhawuleza kunye nexesha elincitshisiweyo lokunyibilika.

Imveliso yokutshintsha indawo ephezulu: ukugcinwa kwamanzi okuqinileyo, okufanelekileyo ukwakhiwa kwiindawo ezinobushushu obuphezulu okanye ezomileyo.

Njengesongezelelo esisebenzayo esiyimfuneko kwiizizalisi zamalungu ze-HPMCAyiphuculi nje kuphela ukusebenza kolwakhiwo kunye nobomi benkonzo yezinto zokwakha, kodwa ikwaphucula kakhulu umgangatho uwonke kunye namava omsebenzisi wemveliso. Ngophuhliso lwezixhobo zokwakha eziluhlaza nezinobuhlobo nokusingqongileyo, i-HPMC iya kudlala indima ebaluleke ngakumbi kwizizalisi ezidibeneyo kunye nezinye iikhemikhali zokwakha ngenxa yeenzuzo zayo ezifana ne-bio-based, ezingenabungozi kwaye zibola.