Focus on Cellulose ethers

Impembelelo ye-Cellulose Etere kwi-Putty Powder Application

Impembelelo ye-Cellulose Etere kwi-Putty Powder Application

Sisiphi isizathu sokuba i-putty powder yome ngokukhawuleza?

Oku kuhambelana ikakhulu nokongezwa kwe-calcium yothuthu kunye nesantya sokugcinwa kwamanzi kwifayibha, kwaye kunxulumene nokoma kodonga.

Kuthekani ngokuxobula nokuqengqeleka?

Oku kuhambelana nesantya sokugcinwa kwamanzi, okulula ukwenzeka xa i-viscosity ye-cellulose iphantsi okanye inani lokongezwa lincinci.

Ngaba ngamanye amaxesha iba neengongoma?

Oku kuhambelana ne-cellulose, eneempawu ezimbi zokwenza ifilimu, kwaye kwangaxeshanye, ukungcola kwi-cellulose kusabela kancinci nge-ash calcium. Ukuba impendulo inzima, i-putty powder iya kubonakala njengentsalela yebhontshisi. Ayinakubekwa eludongeni, kwaye ayinayo amandla adibeneyo ngexesha elinye. Ukongeza, le meko iyenzeka nakwiimveliso ezinje ngamaqela e-carboxyl afakwe kwiselulosi.

Iintaba-mlilo kunye neepinhole?

Ngokucacileyo oku kunxulumene nokuxinana komphezulu wamanzi we-hydroxypropyl methylcellulose isisombululo samanzi. Uxinzelelo lwetafile yamanzi kwisisombululo samanzi se-hydroxyethyl ayicacanga. Kuya kulunga ukwenza unyango lokugqiba.

Kutheni le nto i-putty powder iba yincinci emva kokongeza amanzi?

I-cellulose isetyenziswe njenge-thickener kunye ne-agent egcina amanzi kwi-putty. Ngenxa ye-thixotropy ye-cellulose ngokwayo, ukongezwa kwe-cellulose kwi-putty powder kukhokelela kwi-thixotropy emva kokongeza amanzi kwi-putty. Le thixotropy ibangelwa ukutshatyalaliswa kwesakhiwo esidibeneyo samacandelo kwi-putty powder. Esi sakhiwo sivela ekuphumleni kwaye siphule phantsi koxinzelelo. Oko kukuthi, i-viscosity iyancipha phantsi kokuvuselela, kwaye i-viscosity iphinda ibuyele xa imile.

Sesiphi isizathu sokuba i-putty inzima kakhulu kwinkqubo yokukrazula?

Kule meko, i-viscosity ye-cellulose esetyenziswa ngokubanzi iphezulu kakhulu. Abanye abavelisi basebenzisa i-200,000 yeselulosi ukwenza i-putty. I-putty eveliswe ngolu hlobo ine-viscosity ephezulu, ngoko ivakalelwa kakhulu xa ikhuhla. Isixa esicetyiswayo se-putty kwiindonga zangaphakathi yi-3-5 kg, kwaye i-viscosity yi-80,000-100,000.

Kutheni i-putty kunye nomdaka owenziwe nge-cellulose kunye ne-viscosity efanayo uziva uhlukile ebusika nasehlotyeni?

Ngenxa ye-thermal gelation yemveliso, i-viscosity yemveliso iya kuncipha ngokuthe ngcembe ngokunyuka kweqondo lokushisa. Xa iqondo lokushisa lidlula ukushisa kwe-gel yemveliso, imveliso iya kuhlanjululwa emanzini kwaye ilahlekelwe yi-viscosity yayo. Ukushisa kwegumbi ehlotyeni ngokuqhelekileyo kungaphezulu kwama-30 degrees, okuhluke kakhulu kwiqondo lokushisa ebusika, ngoko i-viscosity iphantsi. Kucetyiswa ukuba ukhethe iimveliso ezinobushushu obuphezulu be-gel xa usebenzisa iimveliso ehlotyeni. Ubushushu be-gel yemveliso ngokuqhelekileyo bungaphezulu kwama-75 degrees. I-Wall putty umgangatho wesizwe (JG/T298-2009) iimfuno ezisemgangathweni, umgangatho wemveliso uzinzile, i-zero voc yokusebenza kwendalo ilungile. Ngokubanzi, ubushushu bejeli ye-methyl cellulose bumalunga nama-55 degrees ehlotyeni. Ukuba ubushushu buphezulu kancinci, i-viscosity yayo iya kuchaphazeleka kakhulu.


Ixesha lokuposa: May-06-2023
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