Cellulose ether HPMC na ciment ngwa agha na gypsum dabeere slurry, tumadi na-arụ ọrụ nke mmiri njigide na ndim, nwere ike n'ụzọ dị irè melite adhesion na sag iguzogide slurry.
Okpomọkụ ikuku, ọnọdụ okpomọkụ na ọnụego ikuku nwere ike imetụta ọnụ ọgụgụ mmiri nke evaporation na ngwa ngwa ciment na ngwaahịa gypsum.N'oge dị iche iche, enwere ike gbanwee mmetụta njide mmiri nke slurry site na ịba ụba ma ọ bụ ibelata ego HPMC.N'ịrụ ụlọ okpomọkụ dị elu, iji nweta mmetụta nke nchekwa mmiri, ọ dị mkpa ịgbakwunye ngwaahịa HPMC n'ụzọ zuru ezu dịka usoro ahụ si dị.Ma ọ bụghị ya, a ga-enwe hydration ezughi oke, mbelata ike, mgbawa, oghere oghere na mwụfu nke ihicha ngwa ngwa kpatara, yana nsogbu ndị ọzọ dị mma.Ka okpomọkụ na-ebelata, a pụrụ iji nwayọọ nwayọọ belata ọnụ ọgụgụ nke HPMC, na otu mmetụta njigide mmiri nwere ike nweta.
Enwere ụfọdụ ọdịiche na ihe kpatara mmetụta njide mmiri nke otu ego ngwaahịa agbakwunyere HPMC.Ngwaahịa usoro HPMC mara mma nwere ike dozie nsogbu nke njide mmiri n'okpuru oke okpomọkụ.N'oge okpomọkụ dị elu, karịsịa na ebe a na-ekpo ọkụ ma na-ekpo ọkụ na nke dị nro na-ewu n'akụkụ anwụ na-acha, ọ dị mkpa ka HPMC dị elu dị mkpa iji melite njigide mmiri nke slurry.HPMC dị elu, methoxy na hydroxypropyl dị iche iche yana nkesa agbụ cellulose molecular, nwere ike melite hydroxyl na ether bond na ikuku oxygen na njikọ mmiri hydrogen njikọ ike, mee ka mmiri efu ghọọ mmiri jikọtara ọnụ.Na n'ụzọ dị irè gbasasịa na slurry na ọbọp niile siri ike ahụ, hydration mmeghachi omume na inorganic cementing ihe, na e guzobere a oyi akwa nke wetting film, mmiri na isi nwayọọ nwayọọ tọhapụrụ ruo ogologo oge, ka n'ụzọ dị irè ịchịkwa evaporation nke mmiri mere. site na ihu igwe dị elu, iji nweta njigide mmiri dị elu.
Ihe ndị a na-emetụtakarị njide mmiri nke ngwaahịa HPMC:
1. The HPMC uniformity: Uniform mmeghachi omume nke HPMC, methoxy, hydroxypropoxy edo nkesa, elu mmiri njide.
2 HPMC thermal gel okpomọkụ: Gel na-ekpo ọkụ nwere elu
okpomọkụ na oke njigide mmiri;ma ọ bụghị ya, ọ nwere obere njigide mmiri.
3. The viscosity nke HPMC: Mgbe viscosity nke HPMC na-abawanye, mmiri njigide ọnụego na-abawanye.Mgbe
viscosity ruru ogo ụfọdụ, mmụba nke njide mmiri na-achọ ịdị nwayọọ.
4. Ọdịnaya HPMC: Ka a na-agbakwunye HPMC, ọnụ ọgụgụ dị elu nke mmiri na-eme ka ọ dịkwuo mma mmetụta njide mmiri.Na nso nke 0.25-0.6%, ọnụ ọgụgụ nchekwa mmiri na-abawanye ngwa ngwa na mmụba nke ego agbakwunyere.Mgbe ego agbakwunyere mụbara n'ihu, usoro mmụba nke ọnụego nchekwa mmiri bịara nwayọ.
Oge nzipu: Jul-29-2022