Impembelelo ye-hydroxypropyl methylcellulose kwiipropati zezinto eziphathekayo!

IHydroxypropyl methylcellulose (HPMC) ineempawu ezigqwesileyo zokujiya kwaye ingasetyenziswa njengesixabanisi esigqwesileyo se-anti-dispersant kwikhonkrithi.Ngaphambili, le nto yayiyimveliso yeekhemikhali eyayinqongophele e-China, kwaye ixabiso layo liphezulu.Ngenxa yezizathu ezahlukeneyo, ukusetyenziswa kwayo kwiSicelo kwishishini lokwakha ilizwe lam, kwiminyaka yakutshanje, kunye nophuhliso oluqhubekayo lwetekhnoloji yokufakelwa kodonga lwangaphandle, ukungabikho kwenkqubela phambili kwitekhnoloji yokuvelisa icellulose, kunye neempawu ezibalaseleyo zenqununu yeHPMC kunye nomdla, HPMC. isetyenziswe ngokubanzi kushishino lokwakha.

Enye: Uvavanyo lokuchasa ukusasazeka:

Ukuxhatshazwa kwe-dispersion luphawu olubalulekileyo lobugcisa ukulinganisa umgangatho wokwahlula.I-HPMC yikhompawundi yepolymer enyibilikayo emanzini, eyaziwa ngokuba yintlaka enyibilikayo emanzini okanye ipolima enyibilikayo emanzini.Iyakwandisa ukucwangcisa umxube ngokunyusa i-viscosity ngamanzi.Yimathiriyeli ye-polymer esekelwe kuManzi inokunyibilika emanzini ukwenza izisombululo okanye i-dispersions.Iimvavanyo zibonisa ukuba xa inani le-naphthalene-based based-high-efficiency reducers yamanzi linyuka, ukongezwa kokunciphisa amanzi kuya kunciphisa ukunyanzeliswa kwe-dispersion ye-cement esanda kuxutywa.Oku kungenxa yokuba isinciphisi samanzi esisekwe kwi-naphthalene sisebenza ngokugqithisileyo.Xa umnciphisi wamanzi wongezwa kumdaka, umnciphisi wamanzi ujoliswe kumphezulu weengqungquthela zesamente ukwenzela ukuba umphezulu weengqungquthela zesamente ube nentlawulo efanayo.Le ngqungquthela yombane yenza iinqununu zesamente Isakhiwo se-flocculation esakhiweyo sichithwa, kwaye amanzi aqulethwe kwisakhiwo akhululwa, okuya kubangela ukulahlekelwa kwenxalenye yesamente.Kwangaxeshanye, kufunyaniswe ukuba ngokunyuka komxholo we-HPMC, ukuxhathisa ukusasazwa kodaka oluxutyiweyo lwesamente lubangcono kwaye lubengcono.

Zimbini: iimpawu zokomelela kwekhonkrithi:

(1) Ukongezwa kwe-hydroxypropyl methylcellulose kunempembelelo ebonakalayo yokucotha kumxube wodaka.Ngokunyuka kwesixa se-HPMC, ixesha lokubuyiswa kodaka liyandiswa ngokulandelelana.Ngaphantsi komlinganiselo ofanayo we-HPMC, ukubunjwa kwamanzi angaphantsi kwamanzi Ixesha lokumisela udaka emoyeni lide kunomoya, onenzuzo yokumpompa ikhonkrithi esekelwe emanzini.

(2) Udaka lwesamente olusandul’ ukuxutywa oluxutywe nehydroxypropyl methylcellulose luneempawu ezintle ezidityanisiweyo kwaye luphantse lungophi.

(3) Isixa se-hydroxypropyl methylcellulose kunye nemfuno yamanzi yodaka yehla kuqala kwaye yanda ngokucacileyo.

(4) Ukudityaniswa kwearhente yonciphiso lwamanzi kuphucula ingxaki yokwanda kwesidingo samanzi sodaka, kodwa umthamo walo kufuneka ulawulwe ngokufanelekileyo, kungenjalo into echasene nokusasazeka ngaphantsi kwamanzi yodaka oluxutyiweyo lwesamente luya kuncitshiswa ngamanye amaxesha.

(5) Ukongeza i-hydroxypropyl methylcellulose ngaphantsi kwamanzi i-admixture yekhonkrithi engabonakaliyo, ukulawula umthamo kunenzuzo kumandla.Uvavanyo lubonisa ukuba umlinganiselo wamandla wekhonkrithi eyenziwe ngamanzi kunye ne-air-formed concrete yi-84.8%, kwaye umphumo uthelekiswa kakhulu.