I-hydroxypropyl methylcelluloseUkuba ne-viscosity eyi-100,000 ngokuqhelekileyo yanele kwi-putty powder, ngelixa i-mortar inemfuneko ephezulu ye-viscosity, ngoko ke i-viscosity eyi-150,000 kufuneka ikhethwe ukuze isetyenziswe ngcono. Umsebenzi obaluleke kakhulu wei-hydroxypropyl methylcellulosekukugcinwa kwamanzi, kulandele ukuqina. Ke ngoko, kwi-putty powder, lo gama nje ukugcinwa kwamanzi kufezekiswa, i-viscosity ephantsi nayo iyamkeleka. Ngokubanzi, xa i-viscosity iphezulu, kokukhona ukugcinwa kwamanzi kungcono, kodwa xa i-viscosity idlula i-100,000, impembelelo ye-viscosity ekugcinweni kwamanzi ayibalulekanga.
I-hydroxypropyl methylcellulosengokubanzi yahlulwe ngokweendidi ezilandelayo ngokwe-viscosity:
1. I-viscosity ephantsi: I-cellulose ye-viscosity engama-400, esetyenziselwa ikakhulu udoti ozimele.
Ubuninzi obuphantsi, ukunyibilika kakuhle, emva kokuyongeza kuya kulawula ukugcinwa kwamanzi kumphezulu, ukuvuza kwamanzi akubonakali, ukuncitshiswa kuncinci, ukuqhekeka kuyancipha, kwaye kunokumelana nokuqhekeka, kuphucule ukunyibilika kunye nokumpompa.
2. I-viscosity ephakathi nephantsi: I-cellulose ye-viscosity engama-20,000-50,000, esetyenziswa kakhulu kwiimveliso ze-gypsum kunye nee-caulking agents.
Ukuqina okuphantsi, ukugcinwa kwamanzi, ukusebenza kakuhle kolwakhiwo, ukongezwa kwamanzi okuncinci.
3. Ubuninzi obuphakathi: I-cellulose eyi-75,000-100,000 viscosity, esetyenziselwa ikakhulu i-putty yangaphakathi nangaphandle eludongeni.
Ukuqina okuphakathi, ukugcinwa kwamanzi okuhle, ulwakhiwo oluhle kunye neempawu zokuxhoma
4. Ubuninzi be-viscosity: 150,000-200,000, esetyenziswa kakhulu kwi-polystyrene particle insulation mortar kunye ne-vitrified micro-bead insulation mortar. Ubuninzi be-viscosity, ukugcinwa kwamanzi aphezulu, ubuninzi be-mortar akulula ukuyiwisa, ukuhambahamba, ukuphucula ulwakhiwo.
Ngokubanzi, okukhona i-viscosity iphezulu, kokukhona ukugcinwa kwamanzi kuphucuka. Ke ngoko, abathengi abaninzi baya kukhetha ukusebenzisa i-cellulose ene-viscosity ephakathi (75,000-100,000) endaweni ye-cellulose ene-viscosity ephakathi (20,000-50,000) ukunciphisa isixa esongeziweyo ngaloo ndlela balawule iindleko.
I-Hydroxypropyl methylcellulose (HPMC)yipolymer exutyiweyo esetyenziswa kakhulu kumashishini ahlukeneyo, kuquka ulwakhiwo, amayeza, kunye nemveliso yokutya. Ukuqina kwe-HPMC luphawu olubalulekileyo oluchaza ukusebenza kwayo kwizicelo ezahlukeneyo.
Ubunzima be-HPMC buchatshazelwa zizinto ezifana nobungakanani bokutshintshwa (DS), ubunzima be-molecular, kunye noxinzelelo lwesisombululo se-HPMC. Ngokubanzi, njengoko ubunzima be-HPMC bukhula, ubuninzi bayo buyakhula.
I-HPMC ifumaneka kwiindidi ezahlukeneyo ze-viscosity, eziqhele ukulinganiswa ngokwe "ubunzima bayo be-molecular" okanye "umxholo we-methoxyl." I-viscosity ye-HPMC ingatshintshwa ngokukhetha i-grade efanelekileyo okanye ngokulungisa uxinzelelo lwesisombululo se-HPMC.
Kwizicelo zokwakha, i-HPMC ene-viscosity ephezulu idla ngokusetyenziswa ukuphucula ukusebenza kakuhle kunye nokugcinwa kwamanzi kwezinto ezisekwe kwisamente. Kwimithi, i-viscosity yinto ebalulekileyo ekulawuleni izinga lokukhululwa kwezithako ezisebenzayo kwimixube yamayeza.
Ke ngoko, ukuqonda i-viscosity ye-hydroxypropyl methylcellulose kubalulekile ekukhetheni umgangatho ofanelekileyo kwizicelo ezithile kunye nokuqinisekisa iimpawu zokusebenza ezifunekayo.
Ixesha lokuthumela: Meyi-30-2024