Seretse sa phofo se ommeng se bolela ntho e entsoeng ka granular kapa phofo e entsoeng ka ho kopanya 'mele ea li-aggregates, lisebelisoa tsa samente tse sa sebetseng, le li-additives tse omisitsoeng le ho hlahlojoa ka tekanyo e itseng. Ke li-additives tse atisang ho sebelisoa bakeng sa seretse sa phofo se omileng? Se latelang ke selelekela sa litaba tsa mantlha tsa li-additives tsa seretse sa phofo se omeletseng se tlisitsoeng ke Jianshe Net bakeng sa tšupiso.
Seretse sa phofo se omileng ka kakaretso se sebelisa samente ea Portland e le thepa ea samente, 'me bongata ba thepa ea samente hangata bo nka 20% ho isa ho 40% ea seretse se omeletseng; Li-aggregate tse ngata tse ntle ke lehlabathe la quartz 'me li hloka tekanyo e kholo ea phekolo ea pele e kang ho omisa le ho hlahloba ho netefatsa hore boholo ba likaroloana tsa tsona le boleng ba tsona li finyella litlhoko tsa foromo; Ka linako tse ling molora oa fofa, phofo ea slag, joalo-joalo le tsona li eketsoa e le li-admixtures; Li-admixtures hangata li sebelisoa ka bongata bo fokolang, ho tloha ho 1% ho isa ho 3%, empa li na le phello e kholo. Hangata li khethoa ho ea ka litlhoko tsa sehlahisoa sa sehlahisoa ho ntlafatsa ho sebetsa, ho beha, matla, ho fokotseha, le ho hanyetsa serame sa seretse.
Ke mefuta efe e sebelisoang hangata ea li-additives tsa seretse sa phofo?
Phofo ea latex e ka qhaloang hape
EVA copolymere ka ntlafatsa thepa e latelang ka seretse sa phofo se omileng:
① Ho boloka metsi le ho sebetsa ha seretse se sa tsoa tsoakoa;
② Ts'ebetso ea tlamahano ea likarolo tse fapaneng tsa motheo;
③ The tenyetseha le deformation tshebetso ya seretse;
④ Matla a ho koba le momahano;
⑤ Apara khanyetso;
⑥ Ho mamella;
⑦ Compactness (ho se khonehe).
Tšebeliso ea phofshoana ea latex e ka sebelisoang hape ka seretse se sephara se tšesaane, se tlamang lithaele tsa ceramic, sistimi ea ho kenya lebota kantle, le lisebelisoa tsa ho ipeha fatše li bontšitse litholoana tse ntle.
Setsi sa ho boloka metsi le se teteaneng
Metsi a bolokang metsi haholo-holo a kenyelletsa cellulose ethers, starch ethers, joalo-joalo The cellulose ether e sebelisoang seretseng sa phofo e omileng haholo-holo ke methyl hydroxyethyl cellulose ether (MHEC) lehydroxypropyl methyl cellulose ether(HPMC).
Mosebetsi oa mantlha oa lisebelisoa tse fokotsang metsi ke ho fokotsa tlhokahalo ea metsi a seretse, ka hona ho ntlafatsa matla a eona a khatello. Lisebelisoa tse ka sehloohong tse fokotsang metsi tse sebelisoang seretseng sa phofo e omileng li kenyelletsa casein, naphthalene e fokotsang metsi, melamine formaldehyde condensate le polycarboxylic acid. Casein ke Plasticizer e phahameng ka ho fetisisa e nang le ts'ebetso e ntle haholo, haholo-holo bakeng sa seretse se tšesaane, empa hobane ke sehlahisoa sa tlhaho, boleng ba eona le theko hangata lia fetoha. Naphthalene letoto la lisebelisoa tse fokotsang metsi tse sebelisoang hangata β-Naphthalenesulfonic acid formaldehyde condensate.
Coagulant
Ho na le mefuta e 'meli ea li-coagulants: accelerator le retarder. Li-accelerator li sebelisetsoa ho potlakisa ho beha le ho thatafala ha seretse, Calcium formate le Lithium carbonate li sebelisoa haholo, 'me metasilicate ea Aluminate le Sodium le eona e ka sebelisoa e le li-accelerator. Li-retarders li sebelisetsoa ho liehisa maemo le ho thatafala ha seretse. Asiti ea tartaric, citric acid le letsoai la eona le Gluconic acid li sebelisitsoe ka katleho.
Moemeli o sa keneleng metsi
Moemeli o sa keneleng metsi haholo-holo o kenyelletsa: Iron(III) chloride, motsoako oa organic silane, letsoai le mafura a acid, polypropylene fiber, Styrene-butadiene le metsoako e meng ea macromolecular. Iron(III) chloride e thibelang metsi e na le phello e ntle ea ho thibela metsi, empa ho bonolo ho baka ts'obotsi ea matla le likarolo tse kentsoeng tsa tšepe. Matsoai a insoluble a k'halsiamo a hlahisoang ke karabelo ea matsoai a acid e mafura a nang le li-ion tsa calcium sebakeng sa samente sa depositi maboteng a li-capillaries, a bapala karolo ea ho thibela li-pores le ho etsa hore mabota ana a li-capillary tube a fetohe libaka tsa hydrophobic, ka hona a bapala karolo e sa keneleng metsi. Theko ea lihlahisoa tsena e batla e le tlase, empa ho nka nako e telele ho kopanya seretse ka ho lekana le metsi.
Likhoele tse sebelisoang bakeng sa seretse sa phofo e omileng li kenyelletsa fiber ea khalase e hanyetsanang le alkali, fiber ea polyethylene (polypropylene fiber), matla a phahameng le a phahameng a modulus polyvinyl fiber (polyvinyl alcohol fiber), fiber ea lehong, joalo-joalo Tse sebelisoang ka ho fetisisa ke tse matla haholo le tse phahameng. likhoele tse phahameng tsa modulus polyvinyl alcohol le likhoele tsa polypropylene. Matla a phahameng le likhoele tse phahameng tsa modulus polyvinyl alcohol li na le ts'ebetso e ntle le theko e tlase ho feta likhoele tsa polypropylene tse tsoang kantle ho naha. Li-fibers li ajoa ka mokhoa o sa tloaelehang le ka mokhoa o ts'oanang ka har'a matrix a samente, 'me li tlamahanngoa haufi-ufi le samente ho thibela ho thehoa le nts'etsopele ea li-microcracks, ho etsa hore matrix a seretse a teteane, ka hona a na le ts'ebetso e sa keneleng metsi le tšusumetso e babatsehang le ho hanyetsa ho phunyeha. Bolelele ke 3-19 mm.
Nako ea poso: Jul-14-2023