Putty na plasta bụ ihe na-ewu ewu nke a na-ejikarị eme ihe na ụlọ ọrụ ihe owuwu. Ha dị mkpa maka ịkwadebe mgbidi na elu ụlọ maka eserese, na-ekpuchi ihe mgbawa, ịrụzi ebe ndị mebiri emebi, na ịmepụta ihe dị mma, ọbụnadị elu. Ha na-agụnye ihe dị iche iche gụnyere ciment, ájá, lime na ihe mgbakwunye ndị ọzọ iji nye ọrụ na njirimara achọrọ. Methylhydroxyethylcellulose (MHEC) bụ otu n'ime ihe mgbakwunye isi eji emeputa putty na plasta ntụ ntụ. A na-eji ya emeziwanye ihe nke powders, mee ka ọrụ ha dịkwuo mma ma kwalite ngwa ha.
Uru nke iji MHEC na-emepụta putty na gypsum ntụ ntụ
MHEC sitere na cellulose wee mepụta ya site na usoro mgbanwe kemịkalụ. Ọ bụ ihe na-edozi mmiri nke a na-ejikarị eme ihe dị ka thickener, stabilizer na emulsifier na ụlọ ọrụ ihe owuwu. Mgbe agbakwunyere na putty na gypsum powders, MHEC na-ekpuchi ihe ndị ahụ, na-enye mkpuchi nchebe nke na-egbochi ha ịchịkọta na idozi. Nke a na-emepụta ihe na-agbanwe agbanwe, na-agbanwe agbanwe nke dị mfe iji rụọ ọrụ ma na-enye njedebe dị mma.
Otu n'ime uru ndị bụ isi nke iji MHEC na putties na plasta bụ na ọ na-eme ka ihe ndị na-ejide mmiri na-eme ka ha dịkwuo mma. MHEC na-amịkọrọ ma na-ejigide mmiri, na-eme ka ngwakọta ahụ ka dị irè ma ọ dịghị akpọnwụ ngwa ngwa. Nke a dị mkpa karịsịa na gburugburu ebe dị ọkụ na nke kpọrọ nkụ ebe ngwakọta ngwa ngwa na-aghọ nke a na-apụghị iji mee ihe, na-eme ka njedebe kwụsị.
MHEC na-akwalitekwa ịrụ ọrụ na oge ọrụ nke putties na plasta. MHEC na-eme ka ịgwakọta na itinye ngwakọta ahụ dị mfe site n'ijigide mmiri na igbochi ngwakọta site na ihicha. Tụkwasị na nke ahụ, MHEC dị nro na-egbuke egbuke na-enye ohere ka putty na stucco gbasaa n'elu elu na-ahapụghị lumps ma ọ bụ clumps, na-eme ka ọ bụrụ ihe na-enweghị ntụpọ, mara mma.
Na mgbakwunye na ịkwalite udidi na ịrụ ọrụ nke putties na plasta, MHEC nwekwara ike melite njirimara njikọ ha. Site n'ịmepụta oyi akwa mkpuchi gburugburu ihe ndị ahụ, MHEC na-ahụ na ha na-ejikọta nke ọma na elu ha na-agwọ. Nke a na-ebute elu siri ike, na-adịgide adịgide nke na-adịkarịghị agbawa, mgbawa ma ọ bụ bee ka oge na-aga.
Uru ọzọ dị ịrịba ama nke iji MHEC na putty na plasta bụ na ọ na-abawanye iguzogide ikuku na mmiri. Nke a pụtara na ozugbo etinyere putty ma ọ bụ stucco, ọ ga-eguzogide mmebi sitere na ikuku na mmiri, na-eme ka elu ahụ nọgide na-adịgide adịgide ma mara mma ogologo oge.
Na-ebuli arụmọrụ Putty na Gypsum Iji MHEC
Iji kwalite arụmọrụ nke putty na plasta ntụ ntụ, ọ dị mkpa iji hụ na a na-eji MHEC mee ihe n'ụzọ ziri ezi. Nke a pụtara na iji ego ziri ezi nke MHEC nwere ike nweta ọrụ a chọrọ na njirimara nke putty ma ọ bụ stucco na-emepụta.
A ghaghị ịtụle ihe gbasara gburugburu ebe obibi nke nwere ike imetụta arụmọrụ nke putty na gypsum ntụ ntụ. Dịka ọmụmaatụ, n'ebe dị ọkụ na nke kpọrọ nkụ, enwere ike ịgbakwunye MHEC ọzọ iji hụ na ngwakọta ahụ na-adịgide adịgide ma na-agbanwe agbanwe.
Ọ dị mkpa iji hụ na a na-eji putty ma ọ bụ stucco mee ihe nke ọma iji bulie arụmọrụ ya. Nke a pụtara ịgbaso ntuziaka onye nrụpụta nke ọma na ijide n'aka na ngwakọta agwakọtara nke ọma tupu ejiri ya. Na mgbakwunye, enwere ike ịchọ ngwaọrụ pụrụ iche iji hụ na etinyere putty ma ọ bụ stucco n'otu n'otu na mgbe niile n'elu a na-agwọ ya.
MHEC bụ ihe mgbakwunye dị mkpa na-eji na-emepụta putty na plasta ntụ ntụ. Ọ na-eme ka ihe ndị a na-emepụta ihe na ihe ndị a na-eme ka ọ dịkwuo mma, na-eme ka usoro nhazi ha dịkwuo mma, njide mmiri, nrapado na iguzogide ikuku na mmiri. Nke a na-ebute mmecha na-agbanwe agbanwe, na-adịgide adịgide na mma nke na-adịkarịghị agbawa, mgbawa ma ọ bụ bee ka oge na-aga. Iji kwalite arụmọrụ nke putty na gypsum ntụ ntụ, ọ dị mkpa iji hụ na a na-eji usoro ziri ezi nke MHEC eme ihe, na-eburu n'uche ihe gburugburu ebe obibi nwere ike imetụta ọrụ ha. Na mgbakwunye, ọ dị mkpa itinye putty ma ọ bụ stucco n'ụzọ ziri ezi iji bulie arụmọrụ ya wee nweta nsonaazụ achọrọ.
A na-eji HEMC n'ụdị ciment iji meziwanye akụrụngwa ya Hydroxyethyl methylcellulose (HEMC) bụ kemịkalụ nke a na-ejikarị eme ihe na ụlọ ọrụ ihe owuwu. Ọ bụ njikọ dị n'etiti ịrụ ọrụ, njide mmiri, thixotropy, wdg N'oge a, ụdị cellulose ether ọhụrụ na-enweta nlebara anya karị. Ihe dọtara mmasị karịa bụ hydroxyethyl methylcellulose (MHEC).
Otu n'ime ihe kachasị mkpa nke na-ekpebi àgwà ngwaahịa ciment bụ ọrụ nke ngwakọta. Nke ahụ bụ ka simenti dị mfe ịgwakọta, ịkpụzi na ebe. Iji mezuo nke a, ngwakọta ciment kwesịrị ịdị mmiri nke ọma iji wụsa ma na-asọpụta ngwa ngwa, ma ọ kwesịkwara ịdị viscous iji jide ọdịdị ya. MHEC nwere ike nweta ihe onwunwe a site n'ịbawanye viscosity nke ciment, si otú a na-eme ka ọrụ ya dịkwuo mma.
MHEC nwekwara ike mee ka hydration nke ciment dịkwuo ngwa ma melite ike ya. Ike ikpeazụ nke ciment na-adabere n'otú mmiri si ejikọta ya. Mmiri dị ukwuu ga-ebelata ike nke ciment, ebe obere mmiri ga-eme ka ọ sie ike ịrụ ọrụ na ya. MHEC na-enyere aka idowe mmiri ụfọdụ, si otú ahụ na-eme ka hydration kacha mma nke ciment na-akwalite ịmepụta njikọ siri ike n'etiti akụkụ ciment.
MHEC na-enyere aka belata ọnụ ọgụgụ nke ciment. Dị ka ciment na-agwọ ọrịa, ngwakọta ahụ na-ebelata, nke nwere ike iduga n'ịkpụpụta mgbawa ma ọ bụrụ na achịkwaghị mbelata. MHEC na-egbochi nkwụsịtụ a site n'ịkwado mmiri kwesịrị ekwesị na ngwakọta, si otú a na-egbochi ciment site na mgbawa.
MHEC na-arụkwa ọrụ dị ka ihe nkiri nchebe n'elu ciment, na-egbochi mmiri ịpụpụ n'elu. Ihe nkiri a na-enyekwa aka ịnọgide na-enwe mmiri mbụ nke ciment, na-ebelata ohere nke ịgbawa.
MHEC dịkwa mma maka gburugburu ebe obibi. Nke mbụ, ọ bụ biodegradable, nke pụtara na ọ naghị adịgide na gburugburu ebe obibi ogologo oge. Nke abuo, o nwere ike inye aka belata ciment a choro na oru owuwu. Nke a bụ n'ihi na MHEC na-abawanye arụmọrụ na viscosity nke ciment, na-ebelata mkpa maka mmiri ọzọ nke na-eme ka ngwakọta ciment dị mfe.
Iji MHEC na ciment na-enye ọtụtụ uru ma nwee ike inye aka dị ukwuu na ụlọ ọrụ mmepụta ihe. Ọ na-eme ka arụ ọrụ nke ngwakọta ciment na-arụ ọrụ, na-ebelata ọnụ ọgụgụ nke ọkpụkpụ a na-emepụta n'oge a na-agwọ ọrịa, na-akwalite hydration ciment na ike, na-eme ihe dị ka ihe nkiri nchebe n'elu ciment. Ọzọkwa, MHEC dị mma maka gburugburu ebe obibi. Ya mere, MHEC bụ ngwaahịa bara uru maka ụlọ ọrụ mmepụta ihe ka ọ na-eme ka ciment dị mma ma na-enye ndị ọrụ na gburugburu ebe obibi uru.
Oge nzipu: Ọktoba 18-2023