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Sidee buu polycarboxylate superplastisizer uga shaqeeyaa hoobiye sibidhka?

Horumarinta iyo codsigapolycarboxylic superplasticizerwaa mid aad u degdeg badan.Gaar ahaan mashaariicda waaweyn iyo kuwa muhiimka ah sida ilaalinta biyaha, tamarta biyaha, injineernimada hydraulic, injineernimada badda, iyo buundooyinka, polycarboxylate superplastisizer ayaa si weyn loo isticmaalaa.

Ka dib marka sibidhka lagu qaso biyaha, dareeraha sibidhka wuxuu sameeyaa qaab dhismeed qulqulaya sababtoo ah cuf-jiidka molecular ee qaybaha sibidhka, si 10% ilaa 30% biyaha isku dhafan ay ku duudduubaan qaybaha sibidhka mana ka qaybqaadan karaan socodka bilaashka ah iyo sifeynta. , sidaas darteed saameynaya Socodka isku dhafka la taaban karo.Marka supreplasticizer lagu daro, molecules wakiilka biyaha-yareeya ayaa si jihada ah loogu dhejin karaa dusha sare ee qaybaha sibidhka, si ay dusha sare ee qaybaha sibidhka ay leeyihiin lacag isku mid ah (caadiyan lacag diidmo ah), sameynta dib-u-celinta elektrostatic, taas oo kor u qaadaysa labada dhinacba. kala firdhinta qaybaha sibidhka iyo burburinta qaab-dhismeedka qulqulka., sii daaya qayb ka mid ah biyaha duudduuban si ay uga qayb qaataan socodka, taas oo si wax ku ool ah u kordhinaysa dareeraha isku dhafka la taaban karo.

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Kooxda hydrophilic ee ku jirtawakiilka biyaha yareeyawaa mid aad u daraf ah, sidaas darteed filimka adsorption wakiilka biyaha yareeya ee dusha sare ee qaybaha sibidhka waxay samayn karaan filim biyo ah oo xasilan oo leh molecules biyaha.Filimkan biyuhu wuxuu leeyahay saameyn sifayn wanaagsan wuxuuna si wax ku ool ah u yareeyn karaa iska caabbinta qulqulaya ee u dhexeeya qaybaha sibidhka, taas oo sii wanaajineysa dareeraha hoobiye iyo shubka.

Silsiladda laamood ee hydrophilic ee ku taalsuperplasticizerqaabdhismeedku waxa uu ku fidsan yahay xalalka aqueous, taas oo samaynaysa lakabka xayaysiinta ee saddex-geesoodka ah ee hydrophilic oo leh dhumuc gaar ah oogada qaybaha sibidhka.Marka qaybaha sibidhka ay isku dhow yihiin midba midka kale, lakabyada xayeysiinta waxay bilaabaan inay isku dhejiyaan, taas oo ah, caqabado adag ayaa ka dhex dhaca qaybaha sibidhka.Mar kasta oo is-daba-marintu ay sii korodho, way sii weynaataa is-jiidhsiga steric-ka ah, waxaana sii weynaata xannibaadda isku-xidhkaaanshaha u dhexeeya qaybaha sibidhka, taas oo ka dhigaysa hoobiye iyo slump la taaban karo ayaa weli ah mid wanaagsan.

Inta lagu jiro habka diyaarinta eepolycarboxylate wakiilka biyaha dhimaya, Silsilada laamoodka ah qaarkood ayaa lagu tallaalaa molecules ee wakiilka biyaha yareeya.Silsiladdan laanta ma aha oo kaliya waxay bixisaa saameyn xannibaadyo adag, laakiin sidoo kale, deegaanka alkalinity sare ee fuuq-celinta sibidhka, silsiladda laanta ayaa sidoo kale si tartiib tartiib ah loo gooyn karaa, taas oo sii deynaysa polycarboxylic acid oo leh saameyn kala firdhisan, taas oo hagaajin karta saameynta kala firdhinta qaybaha sibidhka iyo xakamaynta luminta hoos u dhaca.


Waqtiga boostada: Mar-29-2024