Hydroxypropylmethylcellulose HPMC na plasta ngwa agha

Hydroxypropyl methylcellulose (HPMC) ngwaahịa maka mpụga mgbidi mkpuchi plasta ngwa agha na-akwadoro si elu-ọcha owu cellulose site pụrụ iche etherification n'okpuru alkaline ọnọdụ. A na-emecha usoro a niile n'okpuru nlekota akpaaka na enweghị ihe ọ bụla anụmanụ. Ihe na-arụ ọrụ dị ka akụkụ ahụ na mmanụ. A na-eji ya eme ihe n'ọtụtụ ebe iji melite arụmọrụ nke ihe ụlọ hydraulic dị ka ciment na gypsum. Na ngwa ngwa nke sitere na ciment, ọ nwere ike melite njide mmiri, gbatịa oge mgbazi na oge oghere, ma belata nkwụsị.

N'ime ngwa agha plasta, ihe mgbakwunye hydroxypropyl methylcellulose dị ntakịrị, mana ọ nwere ike imeziwanye arụmọrụ nke ngwa agha plasta, ọ bụkwa isi ihe na-emetụta arụmọrụ nke ngwa agha ahụ. Nhọrọ ezi uche dị na ya nke hydroxypropyl methylcellulose na viscosities dị iche iche na ego mgbakwunye na-enwe mmetụta dị mma n'ịkwalite arụmọrụ nke ụrọ ntụ ntụ.

Na plasta ngwa agha, hydroxypropyl methylcellulose HPMC na-ekere òkè na njide mmiri, ndim, na-egbu oge hydration ciment, na imeziwanye arụmọrụ ihe owuwu.

Ikike njide mmiri dị mma na-eme ka hydration ciment zuo oke, nwere ike ịbawanye viscosity mmiri mmiri mmiri mmiri, kwalite ike njikọta nke ngwa agha, ma nwee ike ịhazigharị oge ọrụ. Na mgbakwunye, enwere ike ịkwalite arụmọrụ mgbapụta nke ngwa agha spraying n'ihi mgbakwunye nke hydroxypropyl methylcellulose HPMC, yabụ a ga-akwalite hydroxypropyl methylcellulose HPMC ka ọ bụrụ mgbakwunye ngwa agha.

1. Ụlọ ndị na-ejide mmiri - hydroxypropyl methylcellulose HPMC bụ iji gbochie mmiri ịbanye n'ime mgbidi ahụ.

A na-ahapụ mmiri kwesịrị ekwesị na ngwa ngwa, na-ekwe ka ciment nwee ogologo oge hydration.

Njide mmiri na-adaba na viscosity nke cellulose ether ngwọta na ngwa agha.

Nke dị elu nke viscosity, ka mma na-ejigide mmiri. Ozugbo ụmụ irighiri mmiri na-abawanye, njide mmiri ga-ebelata.

N'ihi na otu ego nke hydroxypropyl methylcellulose HPMC ngwọta maka ewu, mmụba nke mmiri pụtara mbelata nke viscosity.

Mmụba njide mmiri ga-ebute ogologo oge ọgwụgwọ maka ngwa agha eji.

2. HPMC thickener na tumadi ji dị ka a thickener na interface gị n'ụlọnga.

Ọ nwere ike imeziwanye ike nkwụsị na ike na-agbanwe agbanwe, melite mkpuchi elu, mee ka adhesion dịkwuo elu, ma mee ka ike nkwụnye nke ngwa agha dịkwuo elu.

Ezi permeability na-eme ka ịdị n'otu nke interface ahụ dịkwuo mma. Mee ka mmanu na mmiri mmiri nke ngwa agha dịkwuo mma, mee ka ọ dị mfe itinye ma melite arụmọrụ ọrụ.

3. Ngwa nke hydroxypropyl methylcellulose HPMC nwere ike imeziwanye ihe owuwu nke ngwa agha.

Enwere ike iji gluu tile dị ka onye na-ejigide mmiri na nrapado na njikọ nke taịl nile, nke nwere ike ime ka arụ ọrụ nke nrapado dịkwuo mma, mee ka ọ nwee ogologo oge na-emeghe na ntanye siri ike, ma gbochie taịl nile ka ọ daa ngwa ngwa. .

Ọ na-eme ka usoro nhazi dị mma, njide mmiri dị mma, nkwalite na-eme ka adhesion na nnukwu nguzogide sag.

Melite arụmọrụ tiling, kwalite arụmọrụ tiling, kwalite ike njikọta na ike ịkwa akwa.

4. Ikike mmanu mmanu.

Ihe niile na-eme ka ikuku na-arụ ọrụ dị ka mmiri mmiri.

Ebe ọ bụ na ha na-ebelata esemokwu elu, ha na-enyere aka na mgbasa nke ezigbo ntụ ntụ na ngwa agha mgbe agwakọta ya na mmiri.

5. mgbochi sag ngwa agha pụtara na ọ dịghị ihe ize ndụ nke sag ma ọ bụ sag n'oge oké oyi akwa ewu.

Enwere ike imeziwanye nguzogide sag site na iji hydroxypropyl methylcellulose HPMC plasta ngwa agha.

Karịsịa hydroxypropyl methylcellulose HPMC emepụtara ọhụrụ maka plasta ngwa agha nwere ike inye mma mgbochi sag arụmọrụ nke ngwa agha.