Umphumela wokuqina we-hydroxypropyllllm methylcellulose

I-Hydroxypropyllylyl methylcellulose inikela ngodaka olumanzi nge-viscosity enhle kakhulu, engakhuphula kakhulu ukunamathela phakathi kodaka olumanzi kanye nongqimba lwesisekelo, futhi kuthuthukise ukusebenza kwe-anti-sagging yodaka. ngodaka. The thickening effect of cellulose ether can also increase the homogeneity and anti-dispersion ability of fresh cement-based materials, prevent delamination, segregation and bleeding of mortar and concrete, and can be used in fiber-reinforced concrete, underwater concrete and self-compacting concrete .

IHydroxypropyllylylylylylylyllose inyusa ukubonwa kwezinto zokwenza usimende ezisuselwa ekuboniseni isixazululo se-cellulose ether. I-viscosity ye-cellulose ether solution ivame ukuhlolwa yinkomba "i-viscosity". I-viscosity ye-cellulose ether ngokuvamile isho okuhlushwa okuthile (okufana ne-2%) ye-cellulose ether isixazululo endaweni ecacisiwe (njenge-20 ° CETE

I-Viscosity iyipharamitha ebalulekile yokuhlola ukusebenza kwe-cellulose ether. Ukuphakama kwe-viscoxprosity methylcellose solution, okungcono kakhulu kwendlela esekelwe kasimende, okungcono ukunamathela ku-substrate, kungcono ikhono lokulwa nokulwa nokusabalalisa. Iqinile, kepha uma i-viscosity yayo inkulu kakhulu, izothinta uketshezi nokusebenza kwezinto zokwenziwa kokhonkolo (njengokunamathela imimese yokubumba ngenkathi kulungiswa ngodaka). Ngakho-ke, i-viscosity ye-cellulose ether esetshenziswa ngodaka oluxutshwe omile imvamisa i-15,000 ~ 60,000 MPA. I-S-1, isikhungo sokuzimela ngodaka nokhonkolo ozimisele ngokuzikhethela ezidinga uketshezi oluphezulu ludinga ukubonakala okuphansi kwe-cellulose ether.

Ngaphezu kwalokho, umphumela wokuqina we-hydroxypropylllllllylylylylyllllllysyllose wenyusa ukufunwa kwamanzi kwezinto zokwenziwa kosimende, ngaleyo ndlela kwamukele isivuno sodaka.

I-viscoxprosity methylcellulose solution incike kulezi zinto ezilandelayo:

Isisindo se-cellulose ether molecular (noma idigri ye-polymerization) kanye nokuhlushwa, izinga lokushisa lixazululwa, izinga lokuhlola, nezindlela zokuhlola.

1. Kukhuphuka izinga le-polymerization ye-polymerization ye-cellulose ether, kukhulu isisindo molecular, futhi kuphakama isisombululo salo esinamanzi;

2. Iphakeme umthamo (noma ukugxila) kwe-cellulose ether, okuphezulu kwe-viscosity yesisombululo sawo esinamanzi, kepha kufanele kukhokhwe ukukhetha umthamo ofanele lapho uyisebenzisa, ukuze ugweme umthamo owedlulele futhi uthinte ukusebenza kodaka nokhonkolo;

I-3. Njengoketshezi oluningi, ukubonakala kwe-purlulose ether ikhambi kuzokwehla ngokunyuka kwamazinga okushisa, futhi kukhuphuka ukugcwala kwe-cellulose ether, umphumela wokushisa kwezinga lokushisa;

4. I-Celsulose Etr Solutions imvamisa ama-pseudoplastics nge-shear anciphiswa izakhiwo. Izinga eliphakeme kakhulu lapho kuhlolwa, kwehlise ukubonakala.

Ngakho-ke, ukubumbana kodaka kuzoncishiswa ngenxa yesenzo samandla angaphandle, okuzuzisa ekwakhiweni kodaka, ukuze udaka akwazi ukusebenziseka okuhle nokubumbana ngasikhathi sinye. Kodwa-ke, lapho ukugcwaliseka kwe-cellulose ether solution kuphansi kakhulu futhi i-viscosity incane kakhulu, izokhombisa izici zoketshezi lweNewtonian fluid. Lapho okuhlushwa kunyuka, ikhambi lizokhombisa kancane kancane izici ze-pseudoplastic fluid, futhi ziphezulu, i-pseudoplalicity ngokwengeziwe.