Ts'ebetso ea Tlhahiso ea Phofo ea Polymer e Redispersible

Ts'ebetso ea tlhahiso ea phofo ea polymer e ka sebelisoang hape (RPP) e kenyelletsa mekhahlelo e mengata, ho kenyelletsa le polymerization, ho omisa ka spray, le kamora ho sebetsa. Mona ke kakaretso ea ts'ebetso e tloaelehileng ea tlhahiso:

1. Polymerization:

Ts'ebetso e qala ka polymerization ea li-monomers ho hlahisa ho hasana ha polymer kapa emulsion e tsitsitseng. Khetho ea li-monomers e ipapisitse le thepa e lakatsehang le ts'ebeliso ea RPP. Li-monomers tse tloaelehileng li kenyelletsa vinyl acetate, ethylene, butyl acrylate, le methyl methacrylate.

1. Tokisetso ea Monomer: Li-monomers lia hloekisoa 'me li kopantsoe le metsi, li-initiators le li-additives tse ling ka sekepeng sa reactor.
2. Polymerization: Motsoako oa monoma o feta polymerization tlas'a mocheso o laoloang, khatello le maemo a pherekano. Li-initiators li qala karabelo ea polymerization, e lebisang ho thehoeng ha liketane tsa polymer.
3. Ho tsitsa: Li-surfactants kapa li-emulsifiers li eketsoa ho tsitsisa ho hasana ha polymer le ho thibela ho kopana kapa ho kopana ha likaroloana tsa polymer.

2. Ho Omisa:

Kamora ho etsoa ha polymerization, ho hasana ha polymer ho ka omisoa ka ho fafatsa ho e fetola hore e be mofuta o omileng oa phofo. Ho omisa ka ho fafatsa ho kenyelletsa ho hasanya ha atomizing hore e be marotholi a matle, ebe a omisoa moeeng o chesang.

1. Atomization: Phatlalatso ea polymer e pompeloa ho molomo oa spray, moo e kenngoang ka marotholi a manyenyane ka moea o hatelitsoeng kapa atomizer ea centrifugal.
2. Ho omisa: Marotholi a kenngoa ka kamoreng ea ho omisa, moo a kopanang le moea o chesang (hangata o futhumala ho ea ho mocheso o pakeng tsa 150 ° C ho ea ho 250 ° C). Ho fetoha mouoane ka potlako ha metsi ho tloha marotholi ho lebisa ho thehoa ha likaroloana tse tiileng.
3. Pokello ea Particle: Likaroloana tse omisitsoeng li bokelloa ka phaposing ea ho omisa ho sebelisoa maholiotsoana kapa li-filters tsa mokotla. Likaroloana tse ntle li ka 'na tsa aroloa ka ho eketsehileng ho tlosa likaroloana tse kholo le ho etsa bonnete ba kabo ea boholo ba likaroloana tse tšoanang.

3. Ka mor'a Ts'ebetso:

Ka mor'a ho omisa ka ho fafatsa, RPP e kena mehatong ea morao-rao ho ntlafatsa thepa ea eona le ho netefatsa botsitso ba sehlahisoa.

1. Ho pholisa: RPP e omisitsoeng e pholile mocheso oa kamore ho thibela ho kenngoa ha mongobo le ho netefatsa botsitso ba sehlahisoa.
2. Ho paka: RPP e pholileng e kenngoa ka mekotleng kapa lijaneng tse thibelang mongobo ho e sireletsa mongobo le mongobo.
3. Taolo ea Boleng: RPP e etsa liteko tsa taolo ea boleng ho netefatsa thepa ea eona ea 'mele le ea lik'hemik'hale, ho kenyeletsoa boholo ba likaroloana, bongata ba bongata, mongobo o setseng, le litaba tsa polymer.
4. Polokelo: RPP e pakiloeng e bolokiloe sebakeng se laoloang ho boloka botsitso le bophelo ba sethala ho fihlela e romelloa ho bareki.

Qetello:

Ts'ebetso ea tlhahiso ea phofo ea polymer e ka sebelisoang hape e kenyelletsa polymerization ea li-monomers ho hlahisa ho hasana ha polymer, ho lateloa ke ho omisa ho fafatsa ho fetolela ho hasana ka mokhoa o omileng oa phofo. Mehato ea ka morao ho ts'ebetso e netefatsa boleng ba sehlahisoa, botsitso, le ho paka bakeng sa ho boloka le ho aba. Ts'ebetso ena e thusa ho etsa li-RPP tse fapaneng le tse sebetsang tse ngata tse sebelisoang liindastering tse fapaneng, ho kenyeletsoa kaho, lipente le liphahlo, likhomaretsi le masela.