Ulwazi olusisiseko lwepolymer powder ehlakazekayo

1. ingcamango esisiseko

I-polymer powder enokuchithwa kwakhonasesona songezo somgubo owomileyo osele uxutywe nodaka olufana nesamente-based okanye igypsum-based.

I-latex i-powder e-redispersible i-emulsion ye-polymer e-spray-yomisiwe kwaye ihlanganiswe ukusuka kwi-2um yokuqala ukwenza iincinci ze-spherical ze-80 ~ 120um. Ngenxa yokuba umphezulu wamasuntswana agqunywe nge-inorganic, i-hard-structure-resistant powder, sifumana i-polymer powders eyomileyo. Kulula kakhulu ukugalela kunye nengxowa yokugcina kwiindawo zokugcina iimpahla. Xa i-powder ixutywe namanzi, i-samente okanye i-gypsum-based mortar, inokuphinda ihlakazwe, kwaye iinqununu ezisisiseko (i-2um) kuyo ziya kuphinda zenziwe kwimeko elinganayo ne-latex yasekuqaleni, ngoko ibizwa ngokuba yi-redispersible latex powder.

Ine-redispersibility entle, iphinda ihlakazeke kwi-emulsion xa idibana namanzi, kwaye ineempawu ezifanayo zeekhemikhali njenge-emulsion yasekuqaleni. Ngokudibanisa umgubo wepolymer ohlakazekayo kwisamente esekwe okanye kwi-gypsum-based powder eyomileyo esele ixutywe nodaka, iipropathi ezahlukeneyo zodaka zinokuphuculwa, ezinje:

Ukuphucula ukubambelela kunye nokudibanisa kodaka;

Ukunciphisa ukufunxa kwamanzi kwizinto eziphathekayo kunye ne-elastic modulus yezinto eziphathekayo;

Amandla e-Flexural, ukuchasana kwempembelelo, ukuxhathisa i-abrasion kunye nokuqina kwezinto zokuqinisa;

Ukuphucula ukusebenza kokwakhiwa kwezinto, njl.

2. Iintlobo zeepolymer powders ezichithwayo

Okwangoku, ezona zicelo ziphambili kwimarike zinokwahlulwa zibe yi-disperse latex:

IVinyl acetate kunye ne-ethylene copolymer rubber powder (Vac/E), ethylene nevinyl chloride kunye nevinyl laurate ternary copolymer rubber powder (E/Vc/VL), ivinyl acetate kunye ne-ethylene kunye ne-fatty acid ephezulu yevinyl ester terpolymerization Umgubo weRubber (Vac/E/ I-VeoVa), i-vinyl acetate kunye ne-fatty acid ephezulu ye-vinyl ester copolymer rubber powder (Vac/VeoVa), i-acrylate kunye ne-styrene copolymer rubber powder (A/S), i-vinyl acetate kunye ne-acrylate kunye ne-fatty ephezulu ye-Vinyl ester terpolymer umgubo werabha (Vac/A/ I-VeoVa), i-vinyl acetate homopolymer rubber powder (PVac), i-styrene kunye ne-butadiene copolymer rubber powder (SBR), njl.

3. Ukuqulunqwa kwepolymer powder echithwayo

Iipolymer powders ezihlakazekayo zihlala zimhlophe, kodwa ezimbalwa zineminye imibala. Izithako zayo ziquka:

I-polymer resin: Ifumaneka kwindawo engundoqo ye-rubber powder particles, kwaye ikwayeyona nto iphambili yomgubo wepolymer ophinda uhlakazwe.

I-additive (yangaphakathi): kunye ne-resin, idlala indima yokuguqula i-resin.

Izongezo (zangaphandle): Izixhobo ezongezelelweyo zongezwa ukwandisa ngakumbi ukusebenza kwepolymer powder.

I-colloid ekhuselayo: umaleko wezinto ze-hydrophilic ezisongelwe kumphezulu we-latex powder particles redispersible, i-colloid ekhuselayo ye-latex eninzi i-redispersible powder yi-polyvinyl alcohol.

I-agent ye-Anti-caking: i-fine mineral filler, isetyenziselwa ukukhusela i-rubber powder kwi-caking ngexesha lokugcinwa kunye nokuthutha kunye nokuququzelela ukuhamba komgubo werabha (ukulahla kwiingxowa zephepha okanye iitanki).

4. Indima yomgubo wepolymer echithwayo kwidaka

I-latex powder ehlaziywayo ihlakazwa kwifilimu kwaye yenza njenge-agent yokuqinisa njenge-adhesive yesibini;

I-colloid ekhuselayo ixutywa yinkqubo yodaka (ayiyi kutshatyalaliswa ngamanzi emva kokubunjwa kwefilimu, okanye "i-dispersion yesibili";

Ifilimu yokwenza i-polymer resin ihanjiswa kulo lonke inkqubo yodaka njengento yokuqinisa, ngaloo ndlela ikhulisa ukudibanisa komdaka;

5. Indima yomgubo wepolymer osasazwayo kudaka olumanzi:

Ukuphucula ukusebenza kolwakhiwo;

Ukuphucula iimpawu zokuhamba;

Yandisa i-thixotropy kunye ne-sag resistance;

ukuphucula umanyano;