Tsebo ea mantlha ea phofo ea polymer e qhalahang

1. mohopolo oa motheo

Phofo ea polymer e ka qhaloang hapeke motsoako o ka sehloohong oa seretse se omeletseng se tsoakiloeng se kang samente kapa se entsoeng ka gypsum.

Redispersible latex powder ke emulsion ea polymer e omisitsoeng le ho kopanngoa ho tloha 2um ea pele ho etsa likaroloana tse chitja tsa 80 ~ 120um. Hobane bokaholimo ba likaroloana bo koahetsoe ka phofo e sa tsitsang, e thata-thata sebopeho, re fumana phofo e omeletseng ea polima. Li bonolo haholo ho li tšela le ho kenya mokotla bakeng sa polokelo ka matlong a polokelo. Ha phofo e kopantsoe le metsi, samente kapa seretse se entsoeng ka gypsum, e ka qhaloa hape, 'me likaroloana tsa motheo (2um) tse ho eona li tla boela li fetohe boemong bo lekanang le latex ea pele, kahoo e bitsoa redispersible latex powder.

E na le redispersibility e ntle, e qhalakana hape ho emulsion ha e kopana le metsi, 'me e na le lik'hemik'hale tse tšoanang hantle le emulsion ea pele. Ka ho eketsa phofo ea polymer e qhalahang ho seretse se entsoeng ka samente kapa se entsoeng ka gypsum, lisebelisoa tse fapaneng tsa seretse li ka ntlafatsoa, ​​tse kang:

Ntlafatsa ho khomarela le ho momahana ha seretse;

Fokotsa ho monya ha metsi ha thepa le modulus ea elastic ea thepa;

Matla a Flexural, ho hanyetsa tšusumetso, ho hanyetsa abrasion le ho tšoarella ha thepa ea ho matlafatsa;

Ntlafatsa ts'ebetso ea kaho ea lisebelisoa, joalo-joalo.

2. Mefuta ea li-polymer powders tse qhalakahang

Hajoale, lits'ebetso tsa mantlha 'marakeng li ka aroloa ka li-disperse latex:

Vinyl acetate le ethylene copolymer rabara phofo (Vac/E), ethylene le vinyl chloride le vinyl laurate ternary copolymer rabara phofo (E/Vc/VL), vinyl acetate le ethylene le mafura a phahameng a acid vinyl ester terpolymerization Rubber powder (Vac/E/ VeoVa), vinyl acetate le mafura a phahameng a acid vinyl ester copolymer rabara phofo (Vac/VeoVa), acrylate le styrene copolymer rabara phofo (A/S), vinyl acetate le acrylate le mafura a phahameng a acid Vinyl ester terpolymer rabara phofo (Vac/A/ VeoVa), vinyl acetate homopolymer rabara phofo (PVac), styrene le butadiene copolymer rabara phofo (SBR), joalo-joalo.

3. Sebopeho sa phofo ea polymer e qhalakaneng

Hangata li-polymer powders tse senyehang ke liphofshoana tse tšoeu, empa tse 'maloa li na le mebala e meng. Metsoako ea eona e kenyelletsa:

Resin ea polymer: E fumaneha karolong ea mantlha ea likaroloana tsa phofo ea rabara, hape ke karolo ea mantlha ea phofo ea polima e ka sebelisoang hape.

Keketso (ka hare): hammoho le resin, e bapala karolo ea ho fetola resin.

Li-additives (ka ntle): Lisebelisoa tse ling li eketsoa ho eketsa ts'ebetso ea phofo ea polymer e qhalakahang.

Protective colloid: lera la thepa ea hydrophilic e phuthetsoeng holim'a likaroloana tsa phofo tsa latex tse ka sebelisoang hape, colloid e sireletsang ea phofo e ngata ea latex e qhalakantsoeng ke joala ba polyvinyl.

Anti-caking agent: e ntle ea liminerale filler, haholo-holo e sebelisetsoang ho thibela phofo ea rabara hore e se ke ea e-ba kaka nakong ea polokelo le lipalangoang le ho thusa ho phalla ha phofo ea rabara (ho lahla ho tloha mekotleng ea pampiri kapa litanka).

4. Karolo ea phofo ea polymer e qhalakahang ka seretse

The redispersible latex phofo e qhalakanngoa ka filimi 'me e sebetsa e le ntho e matlafatsang e le sekhomaretsi sa bobeli;

Colloid e sireletsang e kenngoa ke tsamaiso ea seretse (e ke ke ea senngoa ke metsi ka mor'a ho thehoa ha filimi, kapa "ho hasana ha bobeli";

Resin ea polymer e entsoeng ka filimi e ajoa ho pholletsa le tsamaiso ea seretse e le thepa e matlafatsang, kahoo e eketsa ho kopana ha seretse;

5. Karolo ea phofo ea polymer e qhalakantsoeng seretseng se metsi:

Ntlafatsa tshebetso ya kaho;

Ntlafatsa thepa ea phallo;

Eketsa thixotropy le sag resistance;

ntlafatsa momahano;