Gypsum bụ ihe eji ewu ụlọ a na-ejikarị eme ihe maka ime mgbidi na mpụta.Ọ na-ewu ewu maka ịdịte aka ya, ịma mma ya na nguzogide ọkụ.Otú ọ dị, n'agbanyeghị uru ndị a, plasta nwere ike ịmepụta mgbawa ka oge na-aga, nke nwere ike imebi iguzosi ike n'ezi ihe ya ma na-emetụta ọdịdị ya.Plaster mgbawa nwere ike ime n'ihi ihe dịgasị iche iche, gụnyere ihe ndị metụtara gburugburu ebe obibi, iwu na-adịghị mma, na ihe ndị na-adịghị mma.N'afọ ndị na-adịbeghị anya, ihe mgbakwunye hydroxypropyl methylcellulose (HPMC) apụtala dị ka ihe ngwọta iji gbochie mgbawa plasta.Edemede a na-egosipụta mkpa mgbakwunye HPMC dị na igbochi mgbawa plasta yana otu ha si arụ ọrụ.
Kedu ihe mgbakwunye HPMC na kedu ka ha si arụ ọrụ?
A na-ejikarị ihe mgbakwunye HPMC eme ihe na ụlọ ọrụ ihe owuwu dị ka ihe mkpuchi mkpuchi na ihe ngbanwe viscosity n'ọtụtụ ngwa, gụnyere plasta.E sitere na cellulose, ha na-agbaze na mmiri oyi na mmiri ọkụ, ya mere enwere ike iji ya mee ihe n'ọtụtụ ihe owuwu.Mgbe agwakọta ya na mmiri, HPMC ntụ ntụ na-etolite ihe dị ka gel nke nwere ike ịgbakwunye na ngwakọta stucco ma ọ bụ tinye ya dị ka ihe mkpuchi n'elu mgbidi plastered.Ụdị gel-dị ka gel nke HPMC na-enye ya ohere ịgbasa nke ọma, na-egbochi oke evaporation nke mmiri na ibelata ihe ize ndụ nke mgbawa.
Uru dị ịrịba ama nke mgbakwunye HPMC bụ ikike ijikwa ọnụego hydration nke gypsum, na-enye ohere maka oge nhazi dị mma.Ihe mgbakwunye ndị a na-emepụta ihe mgbochi nke na-ebelata ntọhapụ nke mmiri, si otú ahụ na-ebelata ohere nke ihicha oge na mgbawa na-esote.Na mgbakwunye, HPMC nwere ike ịgbasa ikuku ikuku na ngwakọta gypsum, nke na-enyere aka melite arụmọrụ ya ma mee ka ọ dị mfe itinye.
Gbochie mgbawa plasta site na iji mgbakwunye HPMC
ihicha shrinkage
Otu n'ime isi ihe na-akpata mgbawa plasta bụ ihicha mbelata nke elu nke plasta.Nke a na-eme mgbe stucco na-akpọnwụ ma daa, na-eme ka esemokwu na-akpata mgbawa.Ihe mgbakwunye HPMC nwere ike inye aka belata mbelata ihicha site na ibelata ọnụego mmiri na-esi na ngwakọta gypsum, na-ebute nkesa mmiri karịa.Mgbe ngwakọta nke plasta nwere mmiri na-agbanwe agbanwe, ọnụ ọgụgụ ihicha ahụ bụ otu, na-ebelata ihe ize ndụ nke mgbawa na mbelata.
Ngwakọta na-ezighi ezi
N'ọtụtụ ọnọdụ, plasta agwakọtaghị nke ọma ga-ebute ebe adịghị ike nke nwere ike ịgbaji ngwa ngwa.Iji ihe mgbakwunye HPMC na ngwakọta gypsum nwere ike inye aka melite akụrụngwa ihe owuwu ma mee ka usoro ihe owuwu dị nro.Ihe mgbakwunye ndị a na-agbasasị mmiri nke ọma na plasta, na-enye ohere maka ike na-agbanwe agbanwe na ibelata ihe ize ndụ nke mgbawa.
mgbanwe okpomọkụ
Mgbanwe dị ukwuu nke okpomọkụ nwere ike ime ka stucco gbasaa na nkwekọrịta, na-emepụta esemokwu nke nwere ike iduga mgbawa.Iji ihe mgbakwunye HPMC na-ebelata ọnụ ọgụgụ nke evaporation mmiri, si otú ahụ na-ebelata usoro ọgwụgwọ na ibelata ihe ize ndụ nke mgbasawanye ọkụ ngwa ngwa.Mgbe plasta na-akpọnwụ nke ọma, ọ na-ebelata ohere nke mpaghara mpaghara nwere ike asacha, na-ebute esemokwu nke nwere ike ibute mgbawa.
Oge ọgwụgwọ ezughị oke
Ikekwe ihe kacha mkpa na plasta na-agbawa bụ oge ọgwụgwọ ezughị ezu.Ihe mgbakwunye HPMC na-ebelata ntọhapụ nke mmiri site na ngwakọta gypsum, si otú ahụ na-agbatị oge nhazi.Ogologo oge ọgwụgwọ na-eme ka stucco na-agbanwe agbanwe ma belata ọdịdị nke ntụpọ adịghị ike nke nwere ike ịgbawa.Ọzọkwa, ihe mgbakwunye HPMC na-enyere aka ịmepụta ihe mgbochi megide ọnọdụ ihu igwe dị oke egwu nke nwere ike ịkpata mgbawa na mpaghara ndị ekpughere.
na ngwụcha
Ịgbawa na stucco bụ ihe a na-ahụkarị na ụlọ ọrụ ihe owuwu ma nwee ike iduga nrụzi dị oke ọnụ na ntụpọ na-adịghị mma.Ọ bụ ezie na enwere ọtụtụ ihe nwere ike ịkpata mgbawa na plasta, iji ihe mgbakwunye HPMC bụ ihe ngwọta dị irè iji gbochie mgbawa.Ọrụ nke mgbakwunye HPMC bụ imepụta ihe mgbochi nke na-egbochi oke ikuku mmiri na-ebelata ihicha shrinkage na mgbasawanye ọkụ.Ihe mgbakwunye ndị a na-emekwa ka arụ ọrụ dịkwuo mma, na-ebute ike na-agbanwe agbanwe na mma plasta ka mma.Site n'ịgbakwụnye ihe mgbakwunye HPMC na ngwakọta plasta, ndị na-ewu ụlọ nwere ike hụ na elu na-adịte aka karị, na-adọrọ adọrọ.
Oge nzipu: Sep-26-2023