Ii-ether zesitatshizizinto eziphuma kwi-polymer ezinyibilikayo emanzini ezenziwe ngesitatshi sendalo ngokuguqulwa kweekhemikhali okanye ngokwasemzimbeni. Zisetyenziswa kakhulu ekwakheni njengezongezo zokugcina amanzi, ukuqina, ukuphucula ukusebenza, kunye nokuphucula iipropati ze-rheological zezinto. Zihlala zivela kwisitatshi sezityalo ezifana nombona, iitapile, kunye ne-cassava. Amaqela e-ether aziswa nge-etherification reaction, etshintsha ukunyibilika kwawo, ukuzinza, kunye neepropati zokuqina, okubenza bakwazi ukusebenza kwiindawo ze-alkaline kunye neenkqubo ezintsonkothileyo.
Kwishishini lokwakha, ii-starch ethers zisetyenziswa kakhulu kwiinkqubo ze-dry-mix mortar ezifana nee-adhesive zethayile, ii-wall putty powders zangaphakathi nezangaphandle, ii-insulation mortars, kunye nezinto ezizilinganisayo ezisekwe kwi-gypsum okanye kwi-samente. Ukusetyenziswa kwazo kuhlala kuphantsi kakhulu, ngokuqhelekileyo phakathi kwe-0.02% kunye ne-0.1%, kodwa zinokuphucula kakhulu ukusebenza. Iindlela eziphambili zokusebenza ziquka:
Ukulungisa ukuhambelana kunye ne-rheology: Ii-starch ethers ziyadumba emanzini ukuze zenze isisombululo esiqinileyo. Xa zisetyenziswa kunye nezinye izinto ezithinayo (ezifana ne-hydroxypropyl methylcellulose (HPMC) kunye ne-hydroxyethyl methylcellulose (MHEC), zinokuphucula ixabiso lemveliso kunye ne-thixotropy ye-mortar, ziqinisekisa ukuhamba kakuhle ngexesha lokusetyenziswa kunye nokuncipha kokugoba emva kokuma.
Ukuphucula ukugcinwa kwamanzi: Iimolekyuli zesitatshi eziguquliweyo ziyakwazi ukufunxa amanzi kakhulu, ziyawafunxa kwaye zivaleleke emanzini, zinciphisa ukufunxwa kwamanzi kunye nokuphuma komphunga kwi-substrate, ziqinisekisa ukufuma okwaneleyo kwesamente okanye i-gypsum, kwaye ziphucula amandla kunye nokunamathela.
Ukuthintela ukugoba nokopha: Kwizinto zokuncamathelisa iithayile okanye ukusetyenziswa ngokuthe nkqo, ii-starch ethers zinokuphucula iipropati ze-mortar ezichasene nokugoba. Kwizinto ezizilinganisayo okanye ezinciphileyo, zinokunciphisa ukopha nokopha kwaye ziqinisekise ukuba umphezulu uthambile.
Ukuphucula indlela yokufaka: Zenza ukukrwela nokusasaza kube lula, zinciphisa "ukunamathela kwemela," ziphucula ukusebenza kakuhle kokufaka kunye nomgangatho wemveliso yokugqibela.
Ii-starch ethers zihlala zisetyenziswa kunye nee-cellulose ethers (HPMC, HEMC, kunye ne-MHEC) kwiifomyula. Ii-cellulose ethers zibonelela ngokugcinwa kwamanzi kunye neempawu zokutyeba, ngelixa ii-starch ethers zilungisa i-thixotropy kunye nokuvumelana kwe-mortar, zifezekisa ukusebenza okulinganayo. Umzekelo, kwiifomyula ze-tile adhesive, isixa esifanelekileyo se-starch ether sinokunciphisa i-stringiness egqithisileyo ebangelwa zii-high-viscosity cellulose ethers, okwenza kube lula ukuyisebenzisa i-mortar. Kwii-putty powders, inokuphucula ukuguda kunye nokunciphisa umngcipheko wokushwabana nokuqhekeka.
Kwizicelo zokwakha, ii-starch ethers zibonelela ngezi nzuzo zilandelayo zokusebenza:
Ubuhlobo nokusingqongileyo: Zenziwe ngesitatshi sezityalo zendalo, ziyabola kwaye azinampembelelo ingako kukusingqongileyo.
Ukusebenza kakuhle kweendleko: Amanqanaba aphantsi okusetyenziswa avelisa uphuculo olukhulu, nto leyo enciphisa ukuxhomekeka kwizongezo ezibizayo.
Ukuzivumelanisa nokuguquguquka kwefomyula: Ifanelekile kwiimortars ezisekwe kwisamente, ezisekwe kwigypsum, kunye nezisekwe kwimixed, kwaye iyahambelana neentlobo ngeentlobo zezongezo.
Yahlukilei-starch etherIintlobo kunye neendlela zokuguqula zikhokelela kumanqanaba ahlukeneyo okunyibilika, amandla okujiya, ukumelana ne-alkali, kunye nokuzinza. Ke ngoko, kwizicelo ezisebenzayo, kubalulekile ukukhetha uhlobo olufanelekileyo ngokusekelwe kwinkqubo yokwenza, indawo yokwakha, kunye nokusebenza okucwangcisiweyo, kunye nokumisela idosi efanelekileyo ngokuvavanya. I-Starch ether sisithako "esincinci, isiphumo esikhulu" kwizixhobo zokwakha. Siphucula kakhulu i-rheology ye-mortar, ukugcinwa kwamanzi, kunye nokusebenza kakuhle, siphucula kakhulu ukusebenza kakuhle kokwakha kunye nomgangatho wemveliso egqityiweyo. Sisithako esisebenzayo esiyimfuneko kwiinkqubo zanamhlanje ze-mortar ezomileyo.
Ixesha lokuthumela: Agasti-11-2025