Zeziphi iintlobo ezahlukeneyo zodaka olomileyo? Ukusetyenziswa komgubo welatex onokuphinda uhlakazwe

Udaka lomgubo olomileyo lubhekiselele kwigranular okanye kwimathiriyeli engumgubo eyenziwe ngokuxutywa ngokwasemzimbeni kweeaggregates, imathiriyeli yesamente ye-inorganic, kunye nezongezo eziye zomiswa zaze zajongwa ngokomlinganiselo othile. Zeziphi izongezo ezisetyenziswa ngokuqhelekileyo kumgubo wodaka owomileyo? Udaka lomgubo olomileyo lusebenzisa isamente yasePortland njengesixhobo sesamente, kwaye isixa semathiriyeli yesamente sidla ngokubalelwa kwi-20% ukuya kwi-40% yodaka olomileyo lomgubo; Uninzi lwee-aggregates ezintle ziyisanti ye-quartz kwaye zifuna isixa esikhulu sonyango lwangaphambili olunjengokomisa kunye nokuhlolwa ukuqinisekisa ukuba ubungakanani bamasuntswana kunye nomgangatho wabo uhlangabezana neemfuno zefomula; Ngamanye amaxesha i-fly ash, i-slag powder, njl. I-Admixtures isetyenziswa ngokubanzi kwiimali ezincinci, ukusuka kwi-1% ukuya kwi-3%, kodwa ibe nefuthe elibalulekileyo. Zihlala zikhethwa ngokweemfuno zefomyula yemveliso yokuphucula ukusebenza, ukubekwa, amandla, ukuncipha, kunye nokumelana neqabaka yodaka.

Zeziphi iindidi ezisetyenziswa ngokuqhelekileyo zezongezo zodaka olomileyo lomgubo?

I-latex powder enokuchithwa kwakhona

I-latex powder ephinda ikwazi ukuphucula ezi mpawu zilandelayo kudaka olomileyo lomgubo:

① Ukugcinwa kwamanzi kunye nokusebenza kodaka oluxutywe ngokutsha;

② Ukusebenza kokudibanisa kwemigangatho eyahlukeneyo yesiseko;

③ Ukuba bhetyebhetye kunye nokusebenza kokuguqulwa kodaka;

④ Amandla okugoba kunye nomanyano;

⑤ Ukumelana nokunxiba;

⑥ Ukomelela;

⑦ Ukuqina (ukungangeni).

Ukusetyenziswa kwei-latex powder enokuchithwa kwakhonaKumaleko abhityileyo wokutyabeka udaka, isibophelelo sethayile yethayile, inkqubo yokugquma eludongeni yangaphandle, kunye nezinto zokuzilinganisa phantsi zibonise iziphumo ezilungileyo.

Ukugcina amanzi kunye ne-ejenti yokuqina

Amanzi okugcina atyebileyo ikakhulu abandakanyai-cellulose ethers, starch ethers, njl.I-MHEC) kunye ne-hydroxypropyl methyl cellulose ether (HPMC).

I-arhente yokunciphisa amanzi

Umsebenzi osisiseko wokunciphisa amanzi kukunciphisa imfuno yamanzi yodaka, ngaloo ndlela iphucula amandla ayo oxinzelelo. Ezona arhente zokunciphisa amanzi ezisetyenziswa kudaka lomgubo owomileyo ziquka i-casein, i-agent yokunciphisa amanzi esekwe kwi-naphthalene, i-melamine formaldehyde condensate, kunye ne-polycarboxylic acid. I-Casein yi-superplasticizer egqwesileyo, ngakumbi yodaka olubhityileyo, kodwa ngenxa yendalo yayo, umgangatho wayo kunye nexabiso lihlala liguquguquka. I-series ye-Naphthalene yokunciphisa amanzi esetyenziselwa ngokuqhelekileyo i-β-Naphthalenesulfonic acid formaldehyde condensate.

I-Coagulant

Kukho iintlobo ezimbini ze-coagulants: i-accelerator kunye ne-retarder. I-Accelerating agents zisetyenziselwa ukukhawuleza ukubeka kunye nokuqina komdaka, kunye ne-calcium formate kunye ne-lithium carbonate zisetyenziswa ngokubanzi. I-aluminate kunye ne-sodium silicate nayo ingasetyenziswa njengeejenti ezikhawulezayo. I-retarder isetyenziselwa ukucotha ukubeka kunye nokuqina komdaka, kunye ne-asidi ye-tartaric, i-citric acid kunye neetyuwa zayo, kunye ne-gluconate zisetyenziswe ngempumelelo.

Iarhente yokungangeni manzi

Ii-agent zokuthintela amanzi zibandakanya iikhompawundi ze-polymer ezifana ne-iron chloride, i-organic silane compounds, i-fatty acid salts, i-polypropylene fibers, kunye ne-rabha ye-styrene butadiene. I-agent ye-iron chloride yokukhusela amanzi inefuthe elihle lokungangeni kwamanzi, kodwa iyancipha ukubola kweentsimbi zetsimbi kunye neengxenye ezifakwe kwintsimbi. Iityuwa ze-calcium ezinganyibilikiyo eziveliswa kukusabela kweetyuwa ze-asidi ezinamafutha kunye ne-calcium ion kwidiphozithi yesigaba sesamente kwiindonga ze-capillaries, zidlala indima ekuthinteleni ii-pores kunye nokwenza ezi ndonga ze-capillary tube zibe yimiphezulu ye-hydrophobic, ngaloo ndlela idlala indima yokungena kwamanzi. Ixabiso leyunithi yezi mveliso liphantsi, kodwa kuthatha ixesha elide ukuxuba udaka ngokulinganayo ngamanzi.

ifayibha

Iintsinga ezisetyenziselwa udaka lomgubo owomileyo ziquka i-alkali resistant glass fiber, polyethylene fiber (polypropylene fiber), high-high-high and high modulus polyvinyl alcohol fiber (polyvinyl alcohol fiber),umcu womthinjl Amandla aphezulu kunye ne-modulus ephezulu ye-polyvinyl alcohol fibers inomsebenzi ongcono kunye nexabiso eliphantsi kunemicu ye-polypropylene evela kumazwe angaphandle. Iifayibha zisasazwa ngokungaqhelekanga kwaye ngokulinganayo kwi-matrix yesamente, kwaye zisondelelene ngokusondeleyo nesamente ukuthintela ukubunjwa kunye nophuhliso lwe-microcracks, ukwenza i-matrix yodaka ixinene, kwaye ngaloo ndlela inokusebenza kokungangeni kwamanzi kunye nefuthe elihle kakhulu kunye nokumelana nokuqhekeka. Ubude buyi-3-19 mm.

Defoamer

Okwangoku, i-powder defoamers esetyenziswa kudaka olomileyo lomgubo ikakhulu ziipolyols kunye neepolysiloxanes. Ukusetyenziswa kwe-defoamers akunakulungelelanisa kuphela umxholo we-bubble, kodwa kunye nokunciphisa i-shrinkage. Kwizicelo ezisebenzayo, ukwenzela ukuba kuphuculwe ukusebenza okubanzi, izongezo ezininzi kufuneka zisetyenziswe ngaxeshanye. Ngeli xesha, kuyimfuneko ukunikela ingqalelo kwimpembelelo efanayo phakathi kwezongezo ezahlukahlukeneyo. Ukongeza, kuyafuneka ukuba ubeke ingqalelo kwisixa sezongezo ezongeziweyo. Bambalwa kakhulu ukubonisa umphumo wezongezo; Kakhulu, kunokubakho iziphumo ebezingalindelekanga.