Idethi yokuthunyelwe:17,Jul,2023

Izinkinga ezivame kakhulu zokwakhiwa kokuthunyelwe kodonga lwangaphakathi lwe-putty powder ziyaxebuka futhi zibe mhlophe. Ukuze uqonde izizathu zokucwecwa kwe-putty powder yangaphakathi, kubalulekile ukuqonda kuqala ukwakheka kwezinto ezingavuthiwe kanye nesimiso sokuphulukisa se-putty yangaphakathi yodonga lwe-putty. Khona-ke, ngokusekelwe ekomeni, ukumuncwa kwamanzi, izinga lokushisa, nokomisa kwesimo sezulu odongeni ngesikhathi sokwakhiwa kwe-putty, thola izizathu eziyinhloko zokucwecwa kwe-putty powder yangaphakathi futhi usebenzise izindlela ezihambisanayo ukuxazulula inkinga ye-putty powder peeling.

一、 Ukwakheka kwempahla eluhlaza okuyisisekelo kodonga lwangaphakathi lwe-putty powder:

Izingxenye eziyisisekelo kakhulu ze-putty powder yangaphakathi zihlanganisa: i-inorganic bonding material (i-calcium empunga), izigcwalisi (impushana ye-calcium esindayo, i-talcum powder, njll.), kanye nezithasiselo ze-polymer (i-HPMC, i-polyvinyl alcohol, i-rubber powder, njll.). Phakathi kwazo, i-putty powder yangaphakathi yodonga ngokuvamile ayifaki usimende omhlophe noma ingeza usimende omncane omhlophe. Impushana ye-latex ehlakazeka kabusha inomphumela omncane esikalini esiphansi, ngakho-ke ayisetshenziswa kakhulu ku-putty powder yangaphakathi ngenxa yezinkinga zezindleko noma ayivamisile ukusetshenziswa.

Ngakho-ke ngenxa yenkinga ngefomula ye-putty yangaphakathi yodonga uqobo ngokwayo:

1. Izinto zokuhlanganisa ezingaphili, njengokwengezwa okuphansi kwe-calcium empunga kanye nekhwalithi ephansi ye-calcium empunga;

2. Ukwengezwa kwezingxenye zokubopha ezithasiselweni ze-polymer eziphansi kakhulu noma ezingahlangabezani nezindinganiso zekhwalithi kungabangela ukuba i-putty yodonga lwangaphakathi liwe.

二、Umshini wokwelapha we-putty yangaphakathi odongeni powder:

Ukuphulukiswa kwe-putty powder yangaphakathi yodonga ngokuyinhloko kuncike kumphumela we-synergistic we-lime calcium powder, i-HPMC nezinye izithasiselo ze-polymer ngaphansi kwezimo zokumanzisa ukuze kuqiniswe, kwenziwe ifilimu, futhi kusimamise inqubo yokwelapha.

Umgomo wokuqina we-gray calcium powder:

Ukomisa nokuqina: Phakathi nenqubo yokukhuhla, inani elikhulu lamanzi liyahwamuka lisuka kumpushana we-calcium ompunga, lenze inethiwekhi enkulu yama-pores afanayo odaka. Amanzi amahhala asele ezimbotsheni, ngenxa yokuqina kwamanzi angaphezulu, akhiqiza umfutho we-capillary, okwenza izinhlayiya zempuphu ye-calcium empunga zihlangane kakhudlwana, ngaleyo ndlela zithole amandla. Lapho i-slurry iqhubeka yomiswa, lo mphumela ubuye uqiniswe. Ukuqina kwe-Crystallization: Izinhlayiya ze-colloidal ezihlakazeke kakhulu ku-slurry zihlukaniswa ungqimba oluhlukanisayo phakathi kwezinhlayiya. Njengoba okuqukethwe kwamanzi kuncipha kancane kancane, ungqimba lwe-diffusion luya kancane kancane, futhi ngaleyo ndlela izinhlayiya ze-colloidal zinamathela komunye nomunye ngaphansi kwesenzo samandla amangqamuzana, zakha inethiwekhi yendawo yezakhiwo ezihlanganisiwe, ngaleyo ndlela zithola amandla. Ukuqina kwekhabhoni: I-slurry imunca igesi ye-CO2 emoyeni, yakhe i-calcium carbonate empeleni engancibiliki emanzini. Le nqubo ibizwa ngokuthi i-carbonation of slurry. I-co reactions imi kanje:

I-Ca(OH)2+CO2+H2O→CaCO3+(n+1)H2O

Amakristalu e-calcium carbonate akhiqiziwe ahlala ndawonye noma anezinhlayiya ze-calcium hydroxide, enza inethiwekhi yekristalu ephothene ngokuqinile, ngaleyo ndlela athuthukise amandla e-slurry. Ukwengeza, ngenxa yokwanda kancane kwevolumu eqinile ye-calcium carbonate uma kuqhathaniswa ne-calcium hydroxide, udaka oluyimpunga olumpunga lwe-calcium luvame ukuba luqine kakhulu. 3, Ngemuva kokuthi i-putty powder isetshenziswa odongeni, amanzi aku-putty alahleka kakhulu ngezindlela ezintathu:

Ukuhwamuka kwamanzi ebusweni be-putty lapho i-calcium empunga nosimende omhlophe kusabela kumpushana emuncayo odongeni oluyisisekelo. 3. Umthelela wezici zokwakha ekuchithekeni kwempushana ye-putty powder:

Izizathu zokulahlekelwa impushana okubangelwa ukwakhiwa zihlanganisa: izimo ezingezinhle zokunakekelwa okubangela ukuthi i-putty yome ngokushesha futhi ingabi namandla anele; Udonga oluyisisekelo lomile kakhulu, okwenza i-putty ilahlekelwe amanzi ngokushesha; Ukuqina okweqile kwe-putty ku-batch eyodwa.