Ukusetyenziswa kunye nomsebenzi we-latex powder owenziwe kwakhona

Isinyathelo sokuqala ekuveliseni i-polymer powder ephindwe kabini kukuvelisa i-polymer dispersion, eyaziwa ngokuba yi-emulsion okanye i-latex. Kule nkqubo, i-monomers yamanzi e-emulsified (izinziswe yi-emulsifiers okanye i-macromolecular protective colloids) isabela kunye nabaqalisi ukuqalisa i-emulsion polymerization. Ngale ndlela yokusabela, ii-monomers zinxulunyaniswa zenze iimolekyuli ezinde (i-macromolecules), ezizezi iipolymers. Ngethuba le mpendulo, amaconsi e-emulsion e-monomer aguquka abe ngamaqhekeza "aqinile" e-polymer. Kwii-emulsions ze-polymer ezinjalo, i-stabilizers kwi-particle surfaces kufuneka ithintele i-latex kuyo nayiphi na indlela yokudibanisa kwaye ngaloo ndlela idibanise. Emva koko umxube ulungiselelwe ukomisa ukutshiza ngokufaka izongezo ezahlukeneyo, kwaye ukongezwa kwee-colloids ezikhuselayo kunye ne-anti-caking agents zivumela i-polymer ukuba yenze i-powder-free-flowing powder enokuthi iphinde ihlakazwe emanzini emva kokumisa ukutshiza.

I-latex powder enokuchithwa kwakhona isasazwa kwi-powder eyomileyo exutywe kakuhle. Emva kokuba udaka luxutywe namanzi, i-polymer powder iphinda ihlakazwe kwi-slurry edibeneyo edibeneyo kwaye i-emulsified kwakhona; ngenxa ye-hydration ye-cement, i-evaporation ye-surface kunye / okanye i-absorption ye-base layer, i-pores yangaphakathi ikhululekile Ukusetyenziswa ngokuqhubekayo kwamanzi kwenza i-latex particles yome ukwenza ifilimu eqhubekayo engenamanzi emanzini. Le filimu eqhubekayo yenziwa ngokuxutywa kweengqungquthela ezidibeneyo ezihlakazekileyo kwi-emulsion ibe ngumzimba olinganayo. Ukuze wenze ukuba i-latex powder ikwazi ukuphinda ikwazi ukwenza ifilimu kwi-mortar eqinile, kufuneka kuqinisekiswe ukuba iqondo lokushisa elincinci lokubumba ifilimu lingaphantsi kweqondo lokushisa lokunyanga lodaka olulungisiweyo.

Ubume besuntswana lomgubo wepolymer owenziwe ngokutsha kunye neempawu zayo zokwenza ifilimu emva kokusasazwa kwakhona kwenza kube lula ukuba neziphumo ezilandelayo ekusebenzeni kodaka kwimeko entsha kunye nelukhuni:

1. Umsebenzi kudaka olutsha

◆ I-"lubricating effect" yeengqungquthela yenza ukuba umxube wodaka ube ne-fluidity enhle, ukuze ufumane ukusebenza kakuhle kokwakhiwa.

◆ Impembelelo yokungenisa umoya yenza ukuba i-mortar icinezele, yenza ukunyathela kube lula.

◆ Ukongeza iintlobo ezahlukeneyo ze-latex powder ezihlanjululwayo zinokufumana udaka olulungisiweyo kunye neplastiki engcono okanye i-viscous engaphezulu.

2. Umsebenzi kudaka oluqinileyo

◆ Ifilimu ye-latex ingakwazi ukuvala iintanda ze-shrinkage kwi-interface ye-base-mortar kwaye iphilise i-shrinkage cracks.

◆ Ukuphucula ukutywinwa kodaka.

◆ Ukuphucula amandla adibeneyo odaka: ubukho beendawo eziguquguqukayo kunye ne-elastic yepolymer kuphucula ukuguquguquka kunye nokuqina kodaka,

Ibonelela ngokuziphatha okuhambelanayo kunye nokuguquguqukayo kumathambo aqinileyo. Xa amandla esetyenziswa, ngenxa yokuguquguquka okuphuculweyo kunye nokunwebeka kwe

Ii-Microcracks zilibaziseka de kufike uxinzelelo oluphezulu.

◆ Imimandla yepolymer ephothiweyo iphinda ithintele ukudityaniswa kwee-microcracks kwiintanda ezigqobhozayo. Ngoko ke, i-polymer powder ehlaziywayo iphucula uxinzelelo lokungaphumeleli kunye nokungaphumeleli kwezinto eziphathekayo.

Kuyimfuneko ukongeza umgubo we-latex ophinda uhlawulwe ukomisa udaka lwesamente, kuba umgubo we-latex odispersible ikakhulu unezi nzuzo zintandathu zilandelayo, kwaye oku kulandelayo kukwazisa kwakho.

1. Ukuphucula amandla okudibanisa kunye nokubambisana

I-latex powder ye-redispersible idlala indima enkulu ekuphuculeni amandla okudibanisa kunye nokudibanisa kwezinto. Ngenxa yokungena kwe-polymer particles kwi-pores kunye ne-capillaries ye-matrix ye-samente, ukudibanisa okulungileyo kwenziwa emva kokuxutywa kunye ne-samente. I-polymer resin ngokwayo ineempawu ezintle. Isebenza ngakumbi ekuphuculeni ukunamathela kweemveliso zodaka lwesamente kwii-substrates, ngakumbi ukunganyaniseki kakuhle kwezibophelelo ze-inorganic ezifana nesamente kwii-substrates eziphilayo ezifana nemithi, i-fiber, i-PVC kunye ne-EPS.

2. Ukuphucula ukuzinza kwe-frize-thaw kunye nokuthintela ngokufanelekileyo ukuqhekeka kwezinto

I-latex powder ekwazi ukuphinda iphindwe, iplastiki ye-resin ye-thermoplastic inokuwoyisa umonakalo obangelwa kukwandiswa kwe-thermal kunye nokucutha kwezinto ze-samente zodaka olubangelwa ngumahluko weqondo lokushisa. Ukugqithisa iimpawu ze-shrinkage enkulu eyomileyo kunye nokuqhekeka okulula kodaka lwe-samente olula, kunokwenza izinto eziguquguqukayo, ngaloo ndlela kuphuculwe ukuzinza kwexesha elide lezinto eziphathekayo.

3. Ukuphucula ukugoba kunye nokumelana nokuqina

Kwi-skeleton eqinile eyenziwe emva kokuba udaka lwe-samente lufakwe emanzini, i-polymer membrane i-elastic kwaye iqinile, kwaye isebenza njengentlangano ehambayo phakathi kweengqungquthela zodaka lwesamente, ezinokumelana nemithwalo ephezulu yokuguqulwa kunye nokunciphisa uxinzelelo. Ukonyuka kokuqina kunye nokugoba ukumelana.

4. Ukuphucula ukuxhathisa impembelelo

Redispersible latex powder is a thermoplastic resin. Ifilimu ethambileyo efakwe kumphezulu weengqungquthela zodaka inokuthatha impembelelo yamandla angaphandle kwaye iphumle ngaphandle kokuphuka, ngaloo ndlela iphucula ukuchasana kwempembelelo yodaka.

5. Ukuphucula i-hydrophobicity kunye nokunciphisa ukufunxa kwamanzi

Ukongeza i-cocoa redispersible polymer powder inokuphucula i-microstructure yodaka lwesamente. I-polymer yayo yenza inethiwekhi engenakuguqulwa ngexesha lenkqubo ye-cement hydration, ivala i-capillary kwi-gel ye-samente, ivimbela ukungena kwamanzi, kwaye iphucula ukunganyangeki.

6. Ukuphucula ukumelana nokunxiba kunye nokuqina

Ukongeza i-latex powder enokuphinda ihlaziywe inokunyusa ukuhambelana phakathi kwamasuntswana odaka lwesamente kunye nefilimu yepolymer. Ukwandiswa kwamandla okubambisana ngokuhambelanayo kuphucula amandla odaka ukumelana noxinzelelo lokucheba, kunciphisa izinga lokunxiba, kuphucula ukuxhathisa ukunxiba, kunye nokwandisa ubomi benkonzo yodaka.