Kedu ọrụ nke ihe eji ejide mmiri agwakọtara na ihe eji gypsum mee?
Azịza: a na-eji plastering gypsum, gypsum ejikọtara ọnụ, gypsum caulking, gypsum putty na ihe ndị ọzọ e ji eme ntụ ntụ owuwu. Iji mee ka ọ dị mfe ịrụ ọrụ, a na-agbakwụnye ihe mgbochi gypsum n'oge mmepụta iji mee ka oge owuwu nke gypsum slurry dị ogologo. A na-agbakwunye ihe mgbochi iji gbochie usoro mmiri nke gypsum hemihydrate. A ga-edebe ụdị gypsum slurry a na mgbidi ruo awa 1 ruo 2 tupu ọ gbakọta, ọtụtụ mgbidi nwekwara ihe ndị na-amịkọrọ mmiri, ọkachasị mgbidi brik, yana mgbidi simenti ikuku, bọọdụ mkpuchi oghere na ihe ndị ọzọ dị mfe ibu, yabụ a ga-ejigide mmiri gypsum slurry iji gbochie akụkụ nke mmiri dị na slurry ịkwaga na mgbidi, na-ebute ụkọ mmiri mgbe gypsum slurry siri ike ma ghara inwe mmiri zuru oke. Nke a na-eme ka nkewa na mgbawa nke nkwonkwo dị n'etiti plaster na elu mgbidi dị mfe. Mgbakwunye nke ihe na-ejide mmiri bụ iji nọgide na-enwe mmiri dị na gypsum slurry, iji hụ na mmeghachi omume mmiri nke gypsum slurry na njikọ ahụ, iji hụ na ike njikọ ahụ siri ike. Ihe ndị a na-ejikarị eme ihe maka idobe mmiri bụ cellulose ethers, dịka: methyl cellulose (MC), hydroxypropyl methyl cellulose (HPMC), hydroxyethyl methyl cellulose (HEMC), wdg. Na mgbakwunye, enwere ike iji polyvinyl alcohol, sodium alginate, modified starch, diatomaceous earth, rare earth powder, wdg. iji melite arụmọrụ idobe mmiri.
N'agbanyeghị ụdị ihe na-ejide mmiri nwere ike ime ka gypsum ghara ịdị mmiri ruo n'ọkwa dị iche iche, mgbe ọnụọgụ ihe na-ejide mmiri anaghị agbanwe agbanwe, ihe na-ejide mmiri nwere ike ime ka ọnọdụ ahụ ghara ịdị mma ruo nkeji iri na ise ruo iri atọ. Ya mere, enwere ike ibelata ọnụọgụ ihe na-ejide mmiri nke ọma.
Kedu otu esi eji ihe eji ejide mmiri eme ihe n'ime ihe eji gypsum mee ihe?
Azịza: A na-ejikarị ihe ndị na-ejide mmiri eme ihe n'ihe eji arụ ọrụ dịka plastering gypsum, bonding gypsum, caulking gypsum, na gypsum putty. Ebe ọ bụ na a na-agwakọta ụdị gypsum a na ihe na-egbochi mmiri, nke na-egbochi usoro mmiri nke hemihydrate gypsum, ọ dị mkpa ịme ọgwụgwọ mmiri na gypsum slurry iji gbochie akụkụ nke mmiri dị na slurry ịkwaga na mgbidi, na-ebute ụkọ mmiri na mmiri zuru oke mgbe gypsum slurry siri ike. Mgbakwunye nke ihe na-ejide mmiri bụ iji nọgide na-enwe mmiri dị na gypsum slurry, iji hụ na mmeghachi omume mmiri nke gypsum slurry na njikọ ahụ, iji hụ na njikọ ahụ siri ike.
Ọnụọgụ ya na-abụkarị site na 0.1% ruo 0.2% (dịka gypsum si dị), mgbe ejiri gypsum slurry mee mgbidi nwere mmiri siri ike (dịka simenti aerated, bọọdụ mkpuchi perlite, blọk gypsum, mgbidi brik, wdg), na Mgbe ị na-akwadebe gypsum njikọ, gypsum caulking, gypsum plastering elu ma ọ bụ putty dị gịrịgịrị elu, ọnụọgụ ihe na-ejide mmiri kwesịrị ịdị ukwuu (n'ozuzu 0.2% ruo 0.5%).
Ihe ndị na-ejide mmiri dịka methyl cellulose (MC) na hydroxypropyl methylcellulose (HPMC) na-agbaze n'oyi, mana ha ga-etolite ntụpọ n'oge mbụ mgbe a gbazere ha ozugbo na mmiri. A ga-agwakọta ihe na-ejide mmiri na ntụ gypsum tupu oge eruo. Kwadebe ka ọ bụrụ ntụ akọrọ; tinye mmiri ma gwakọta ya, hapụ ya ka ọ nọrọ ruo nkeji ise, gwakọta ya ọzọ, mmetụta ya ka mma. Agbanyeghị, ugbu a, enwere ngwaahịa cellulose ether nke enwere ike ịgbaze ozugbo na mmiri, mana ha enweghị mmetụta dị ukwuu na mmepụta nke ngwa agha ntụ akọrọ.
Kedu ka ihe na-egbochi mmiri si arụ ọrụ mmiri na-adịghị na ahụ gypsum siri ike?
Azịza: Ụdị ihe mkpuchi mmiri dị iche iche na-arụ ọrụ ha na-anaghị ekpuchi mmiri n'ime ahụ gypsum siri ike dịka ụzọ dị iche iche esi arụ ọrụ. N'ụzọ dị iche iche, enwere ike ịkọwa ya n'ụzọ anọ ndị a:
(1) Belata ike ịgbaze nke ahụ gypsum siri ike, mee ka ihe na-eme ka ahụ dị nro dịkwuo mma, ma gbanwee akụkụ ụfọdụ nke calcium sulfate dihydrate nwere oke mgbaze n'ime ahụ siri ike ka ọ bụrụ nnu calcium nke nwere obere mgbaze. Dịka ọmụmaatụ, a na-agbakwunye saponified synthetic fatty acid nke nwere C7-C9, a na-agbakwunyekwa oke kwesịrị ekwesị nke quicklime na ammonium borate n'otu oge ahụ.
(2) Mepụta ihe mkpuchi ihe mkpuchi mmiri iji gbochie oghere ndị dị nro n'ahụ siri ike. Dịka ọmụmaatụ, ịgwakọta paraffin emulsion, asphalt emulsion, rosin emulsion na paraffin-rosin composite emulsion, mma asphalt composite emulsion, wdg.
(3) Gbanwee ike elu nke ahụ siri ike, ka molekul mmiri wee dịrị n'otu ma ghara ịbanye n'ime ọwa capillary. Dịka ọmụmaatụ, a na-etinye ọtụtụ ihe mgbochi mmiri silicone, gụnyere mmanụ silicone dị iche iche emulsed.
(4) Site na mkpuchi mpụta ma ọ bụ itinye mmiri iji kewapụ mmiri ka ọ ghara ịbanye n'ime ọwa capillary nke ahụ siri ike, enwere ike iji ọtụtụ ihe eji egbochi mmiri silicone. Silicone ndị e ji ihe mgbaze mee ka ha dị mma karịa silicone ndị e ji mmiri mee, mana nke mbụ na-eme ka ike gas nke ahụ gypsum siri ike belata.
Ọ bụ ezie na enwere ike iji ihe dị iche iche na-egbochi mmiri iji melite mmiri nke ihe owuwu gypsum n'ụzọ dị iche iche, gypsum ka bụ ihe na-eme ka ikuku sie ike, nke na-adịghị mma maka gburugburu ebe obibi dị n'èzí ma ọ bụ ogologo oge, ọ dịkwa mma naanị maka gburugburu ebe obibi nwere ọnọdụ mmiri na akọrọ na-agbanwe agbanwe.
Kedu ihe bụ mgbanwe nke gypsum ụlọ site na ihe na-egbochi mmiri?
Azịza: E nwere ụzọ abụọ isi arụ ọrụ nke ihe na-egbochi mmiri gypsum: otu bụ ịbawanye ihe na-eme ka ọ dị nro site na ibelata mmiri, nke ọzọ bụ ibelata ọsọ mmiri nke ihe gypsum. Enwere ike ime mbelata mmiri site na akụkụ abụọ. Otu bụ ịbawanye obere gypsum siri ike, ya bụ, ibelata mmiri mmiri nke gypsum site na ibelata porosity na mgbawa nhazi, ka gypsum wee melite iguzogide mmiri. Nke ọzọ bụ ịbawanye ike elu nke ahụ gypsum siri ike, ya bụ, ibelata mmiri mmiri nke gypsum site na ime ka elu oghere ahụ bụrụ ihe nkiri hydrophobic.
Ihe ndị na-egbochi mmiri nke na-ebelata porosity na-arụ ọrụ site n'igbochi obere oghere nke gypsum ma na-eme ka ahụ gypsum dịkwuo mma. E nwere ọtụtụ ihe ndị e ji eme ka porosity belata, dịka: paraffin emulsion, asphalt emulsion, rosin emulsion na paraffin asphalt composite emulsion. Ihe ndị a na-egbochi mmiri na-ebelata porosity nke gypsum n'okpuru usoro nhazi kwesịrị ekwesị, mana n'otu oge ahụ, ha nwekwara mmetụta ọjọọ na ngwaahịa gypsum.
Ihe na-egbochi mmiri nke na-agbanwe ike elu bụ silicone. Ọ nwere ike ịbanye n'ime ọdụ nke oghere ọ bụla, gbanwee ike elu n'ime oke ogologo ụfọdụ, wee si otú a gbanwee akụkụ kọntaktị na mmiri, mee ka molekul mmiri gbakọta ọnụ iji mepụta ntapụ mmiri, gbochie mmiri ịbanye, mezuo ebumnuche nke igbochi mmiri, ma n'otu oge ahụ nọgide na-enwe ike ikuku nke plasta. Ụdị ihe na-egbochi mmiri a gụnyere: sodium methyl siliconate, silicone resin, mmanụ silicone emulsified, wdg. N'ezie, ihe na-egbochi mmiri a chọrọ ka dayameta nke oghere ndị ahụ ghara ịdị oke ibu, n'otu oge ahụ ọ nweghị ike iguzogide mmiri nrụgide, ọ nweghịkwa ike idozi nsogbu mmiri na-adịghị na mmiri ogologo oge nke ngwaahịa gypsum.
Ndị nchọpụta ime obodo na-eji usoro nke ijikọta ihe ndị dị ndụ na ihe ndị na-adịghị ndụ, ya bụ, dabere na ihe na-egbochi mmiri emulsion organic nke e nwetara site na co-emulsification nke polyvinyl alcohol na stearic acid, na ịgbakwunye nkume alum, naphthalenesulfonate aldehyde condensate. A na-eme ụdị ihe na-egbochi mmiri gypsum ọhụrụ site na iji ihe na-egbochi mmiri nnu mee ihe. Enwere ike ịgwakọta ihe na-egbochi mmiri gypsum ahụ ozugbo na gypsum na mmiri, sonye na usoro kristal nke gypsum, ma nweta mmetụta mgbochi mmiri ka mma.
Kedu ihe na-egbochi ihe na-egbochi mmiri silane na ihe na-eme ka mmiri ghara ịdị na gypsum mortar?
Azịza: (1) Mgbakwunye nke ihe na-egbochi mmiri silane nwere ike ibelata oke nke gypsum mortar, na oke nke mgbochi gypsum mortar na-abawanye ka mmụba nke mgbakwunye silane n'ime oke ụfọdụ. Mmetụta mgbochi nke silane na 0.4% silane dị mma, mmetụta mgbochi ya na-adịgidekwa mgbe ọnụọgụgụ gafere oke a.
(2) Mgbakwunye nke silane abụghị naanị na ọ na-emepụta oyi akwa hydrophobic n'elu ihe mkpuchi ahụ iji gbochie mmiri mpụga ịbanye, kamakwa ọ na-ebelata mbugharị nke lye dị n'ime iji mepụta efflorescence, nke na-eme ka mmetụta mgbochi nke efflorescence ka mma nke ukwuu.
(3) Ọ bụ ezie na mgbakwunye nke silane na-egbochi mmịpụta nke ukwuu, ọ nweghị mmetụta ọjọọ na ihe onwunwe nke gypsum mortar ụlọ ọrụ mmepụta ihe, ọ naghịkwa emetụta nhazi nke nhazi ime na ikike ibuli ihe ikpeazụ nke ihe owuwu gypsum dry-mix ụlọ ọrụ mmepụta ihe.
Oge ozi: Nọvemba-22-2022