Umgaqo wokusebenza we-hydroxypropyl methylcellulose kwi-mortar

I-Hydroxypropyl methylcellulose (HPMC)yi-polymer compound enyibilikayo emanzini esetyenziswa kakhulu kushishino lokwakha, ingakumbi kwi-mortar esekelwe kwisamente, i-mortar esekelwe kwi-gypsum kunye ne-adhesive yethayile. Njengesongezelelo se-mortar, i-HPMC inokuphucula ukusebenza kolwakhiwo, iphucule ukusebenza kakuhle, ukunamathela, ukugcinwa kwamanzi kunye nokumelana nokuqhekeka kwe-mortar, ngaloo ndlela iphucula umgangatho uwonke we-mortar.

1. Iimpawu ezisisiseko ze-HPMC

I-HPMC ifunyanwa ikakhulu ngokuguqulwa kwe-cellulose nge-etherification, kwaye inokunyibilika kakuhle kwamanzi, iyenza ibe nkulu, iyenza ifilimu, ityebile kwaye izinzile. Iimpawu zayo ezibalulekileyo zomzimba ziquka:

Ukunyibilika kwamanzi: Anganyibilika emanzini abandayo okanye ashushu ukuze enze isisombululo esicacileyo okanye esikhanyayo esibhityileyo.
Isiphumo sokutyeba: Inganyusa kakhulu ubungqindilili besisombululo kwaye ibonise isiphumo esihle sokutyeba xa kugxilwe kakhulu.
Ukugcinwa kwamanzi: I-HPMC inokufunxa amanzi ize idumbe, kwaye idlala indima ekugcinweni kwamanzi kwi-mortar ukuthintela ukulahleka kwamanzi ngokukhawuleza.
Iimpawu ze-Rheological: Ine-thixotropy elungileyo, enceda ukuphucula ukusebenza kolwakhiwo lwe-mortar.

2. Indima ephambili ye-HPMC kwi-mortar

Indima ye-HPMC kwi-mortar ibonakaliswa kakhulu kwezi nkalo zilandelayo:

2.1 Ukuphucula ukugcinwa kwamanzi kwi-mortar

Ngexesha lenkqubo yokwakha i-samente mortar, ukuba amanzi ayaphuma ngokukhawuleza kakhulu okanye afunxwa kakhulu sisiseko, oku kuya kukhokelela ekunganeli kwe-samente hydration reaction kwaye kuchaphazele uphuhliso lwamandla. I-HPMC yenza isakhiwo se-mesh esifanayo kwi-samente ngokuthanda kwayo ukufunxa amanzi kunye nokukwazi kwayo ukwandisa, ivala umswakama, inciphisa ukulahleka kwamanzi, ngaloo ndlela yandisa ixesha lokuvula kwe-samente kwaye iphucule ukulungelelaniswa kolwakhiwo.

2.2 Isiphumo sokuqina, ukuphucula ukusebenza kakuhle kwesamente

I-HPMC inefuthe elihle lokutyeba, elinokunyusa ukutyeba kwe-mortar, lenze i-mortar ibe ne-plasticity engcono, kwaye lithintele i-mortar ukuba ingahlukani, ihlukaniswe kwaye iphume amanzi. Kwangaxeshanye, ukutyeba okufanelekileyo kunokuphucula ukwakhiwa kwe-mortar, kwenze kube lula ukuyisebenzisa kunye nokulinganisa ngexesha lenkqubo yokwakha, kwaye kuphucule ukusebenza kakuhle kokwakha.

2.3 Ukuphucula ukubopha kunye nokuphucula ukunamathela kwesamente

Kwizicelo ezifana ne-tile adhesive, i-masonry mortar kunye ne-plaster mortar, amandla okubopha kwe-mortar abalulekile. I-HPMC yenza ifilimu ye-polymer efanayo phakathi kwesiseko kunye ne-coating ngokusebenzisa isenzo sokwenza ifilimu, esiphucula amandla okubopha kwe-mortar kwi-substrate, ngaloo ndlela sinciphisa umngcipheko wokuqhekeka kwe-mortar nokuwa.

2.4 Ukuphucula ukusebenza kolwakhiwo kunye nokunciphisa ukuwohloka

Kwisakhiwo somphezulu othe nkqo (njengokuplasta eludongeni okanye ukwakhiwa kwethayile yokuncamathelisa), i-mortar ithambekele ekubhodlokeni okanye ekutyibilikeni ngenxa yobunzima bayo. I-HPMC yonyusa uxinzelelo lwemveliso kunye nokungaboli kwe-mortar, ukuze i-mortar ikwazi ukunamathela ngcono kumphezulu wesiseko ngexesha lokwakhiwa okuthe nkqo, ngaloo ndlela iphucula uzinzo lokwakha.

2.5 Yonyusa ukumelana neentanda kunye nokuphucula ukuqina kwazo

I-mortar ithanda ukuqhekeka ngenxa yokuncipha ngexesha lenkqubo yokuqina, nto leyo echaphazela umgangatho weprojekthi. I-HPMC inokulungisa uxinzelelo lwangaphakathi lwe-mortar kwaye inciphise izinga lokuncipha. Kwangaxeshanye, ngokuphucula ukuguquguquka kwe-mortar, inokumelana ngcono nokuqhekeka phantsi kotshintsho lobushushu okanye uxinzelelo lwangaphandle, ngaloo ndlela iphucula ukuqina.

2.6 Ichaphazela ixesha lokubeka i-mortar

I-HPMC ichaphazela ixesha lokuseta i-mortar ngokulungelelanisa isantya sokumanziswa kwesamente. Ubungakanani obufanelekileyo be-HPMC bunokwandisa ixesha lokwakha i-mortar kwaye buqinisekise ixesha elaneleyo lokulungisa ngexesha lenkqubo yokwakha, kodwa ukusetyenziswa ngokugqithisileyo kunokwandisa ixesha lokuseta kwaye kuchaphazele inkqubela phambili yeprojekthi, ngoko ke umthamo kufuneka ulawulwe ngokufanelekileyo.

3. Impembelelo yedosi ye-HPMC ekusebenzeni kodaka

Umlinganiselo we-HPMC kwi-mortar ngokubanzi uphantsi, ngesiqhelo uphakathi kwe-0.1% kunye ne-0.5%. Umlinganiselo othile uxhomekeke kuhlobo lwe-mortar kunye neemfuno zokwakha.:

Umthamo ophantsi (≤0.1%): Ingaphucula ukugcinwa kwamanzi kwaye iphucule kancinci ukusebenza kakuhle kwesamente, kodwa isiphumo sokutyeba sibuthathaka.

Umlinganiselo ophakathi (0.1%~0.3%): Iphucula kakhulu ukugcinwa kwamanzi, ukunamathela kunye nokukwazi ukulwa nokuwa kwesamente kwaye iphucula ukusebenza kolwakhiwo.

Umthamo ophezulu (≥0.3%): Uya kwandisa kakhulu i-viscosity ye-mortar, kodwa inokuchaphazela ukugeleza, yandise ixesha lokuseta, kwaye ingabi ntle xa isakhiwa.

Njengesongezelelo esibalulekileyo kwi-mortar,I-HPMCIdlala indima ebalulekileyo ekuphuculeni ukugcinwa kwamanzi, ukuphucula ukusebenza kolwakhiwo, ukuphucula ukunamathela kunye nokumelana nokuqhekeka. Ukongezwa okufanelekileyo kwe-HPMC kunokuphucula kakhulu ukusebenza kwe-mortar iyonke kwaye kuphucule umgangatho weprojekthi. Kwangaxeshanye, umthamo kufuneka ulawulwe ukuze kuthintelwe iziphumo ezimbi ekubekeni ixesha kunye nokugeleza kolwakhiwo. Kwixesha elizayo, ngophuhliso oluqhubekayo lweshishini lokwakha, amathuba okusetyenziswa kwe-HPMC kwizixhobo ezintsha zokwakha eziluhlaza aya kuba banzi.