Ziziphi izinto eziya kuchaphazela i-viscosity ye-hydroxypropyl methylcellulose?

Ukusetyenziswa kodaka olumanzi, i-hydroxypropyl methylcellulose ineempawu ezintle zokutyeba, inokunyusa kakhulu amandla okudibanisa phakathi kodaka olumanzi kunye nomgangatho wesiseko, kwaye inokuphucula ukusebenza kwe-anti-sag yodaka, ngoko isetyenziswa ngokubanzi ekudakaleni udaka, lwangaphandle. inkqubo yokugquma eludongeni kunye nodaka lokudibanisa izitena.

Ngenxa yesiphumo esityebileyo se-cellulose ether, inokunyusa i-homogeneity kunye nesakhono sokuchasa ukusasazeka kwezinto ezisandul' ukuxutywa esekwe kwisamente, kwaye inokuthintela iingxaki ze-delamination, ulwahlulo kunye nokopha kwidaka kunye nekhonkrithi. Ingafakwa kwi-Fiber-reinforced concrete, ikhonkrithi engaphantsi kwamanzi kunye ne-self-compacting concrete.

I-Hydroxypropyl methylcellulose inokunyusa ukusebenza kwe-viscous yezinto ezisekelwe kwi-samente. Lo msebenzi uvela ikakhulu kwi-viscosity yesisombululo se-cellulose ether. Ngokuqhelekileyo, isalathisi samanani se-viscosity sisetyenziselwa ukugweba i-viscosity yesisombululo se-cellulose ether, ngelixa i-cellulose I-viscosity ye-ether idla ngokubhekiselele kugxininiso oluthile lwesisombululo se-cellulose ether, ngokuqhelekileyo i-2%, kwiqondo lokushisa elichaziweyo, njenge-degrees ezingama-20 kwaye umyinge wokujikeleza, usebenzisa isixhobo sokulinganisa esichaziweyo, njenge-viscometer ejikelezayo. Ixabiso leViscosity.

I-Viscosity yenye yeeparameters ezibalulekileyo zokuvavanya ukusebenza kwe-cellulose ether. Ukuphakama kwe-viscosity yesisombululo se-hydroxypropyl methylcellulose, ngcono i-viscosity yezinto ezisekelwe kwi-samente, kunye nokusebenza kakuhle kokubambelela kwi-substrate. Ngelo xesha, i-Anti-sagging ikhono kunye ne-anti-dispersion inamandla, kodwa ukuba i-viscosity yayo iphezulu kakhulu, iya kuchaphazela ukusebenza kokuhamba kunye nokusebenza kwezixhobo ezisekelwe kwi-samente.

Ziziphi izinto eziya kuchaphazela i-viscosity ye-hydroxypropyl methylcellulose? Ikakhulu ixhomekeke kwezi zizathu zilandelayo.

1. Iqondo eliphezulu le-polymerization ye-cellulose ether ye-hydroxypropyl methylcellulose, ubukhulu bayo bubunzima be-molecular, obukhokelela kwi-viscosity ephezulu yesisombululo sayo samanzi.

2. Ukuba isixa okanye i-concentration ye-cellulose ether iphezulu, i-viscosity yesisombululo sayo samanzi iya kuba phezulu. Nangona kunjalo, kufuneka kuthathelwe ingqalelo ekukhetheni isixa esifanelekileyo se-cellulose ether xa uyisebenzisa, ingakumbi ukunqanda isixa esikhulu se-cellulose ether. Kuya kuchaphazela ukusebenza kodaka kunye nekhonkrithi.

3. Njengamanzi amaninzi, i-viscosity yesisombululo se-cellulose ether iya kuncipha ngokunyuka kweqondo lokushisa, kwaye iphezulu i-concentration ye-cellulose ether, iyancipha iqondo lokushisa. Impembelelo enkulu.

4. Isisombululo se-cellulose ether ngokuqhelekileyo i-pseudoplastic, eneempawu zokunciphisa i-shear. Isantya esikhulu sokucheba ngexesha lovavanyo, incinci i-viscosity.

Ukudityaniswa kodaka kuya kuncitshiswa ngenxa yesenzo samandla angaphandle, nto leyo ekwanceda ukukhuhla ukwakhiwa kodaka, okubangela ubumbano oluhle kunye nokusebenza kodaka ngaxeshanye. Nangona kunjalo, ukuba isisombululo se-cellulose ether sine-concentration ephezulu Xa i-viscosity iphantsi kwaye i-viscosity encinci, iya kubonisa iimpawu ze-Newtonian fluid. Xa ugxininiso lukhula, isisombululo siya kubonisa ngokuthe ngcembe iimpawu ze-pseudoplastic fluid, kwaye ukuba ugxininiso luphezulu, i-pseudoplasticity iya kubonakala ngakumbi.