I-Redispersible polymer powder (RDP) yi-copolymer ye-vinyl acetate kunye ne-ethylene eveliswa ngenkqubo yokomisa nge-spray. Yinto ephambili kwizicelo ezahlukeneyo zokwakha, inika ukunamathela okungcono, ukuguquguquka kunye nokuqina kwiimveliso ezisekwe kwisamente. Ukwenziwa kwe-redispersible polymer powders kubandakanya amanyathelo aliqela.
1. Ukukhetha izinto eziluhlaza:
I-vinyl acetate-ethylene copolymer: Eyona nto iphambili kwi-RDP yi-copolymer ye-vinyl acetate kunye ne-ethylene. Le copolymer ikhethwe ngenxa yeempawu zayo zokuncamathelisa ezibalaseleyo kunye nokukwazi kwayo ukwandisa ukuguquguquka kunye nokuqina kwezinto eziqinisa isamente.
2. Ukwenziwa kwe-polymer ye-emulsion:
Inkqubo yemveliso iqala nge-emulsion polymerization, apho i-vinyl acetate kunye ne-ethylene monomers zenziwa i-polymer phambi kwabaqalisi kunye nabaqinisi.
Inkqubo ye-emulsion polymerization ilawulwa ngononophelo ukuze kufunyanwe ubunzima be-molecular, ukwakheka, kunye nesakhiwo se-copolymer esifunekayo.
3. Impendulo kunye ne-copolymerization:
Ii-vinyl acetate kunye nee-ethylene monomers ziyasabela xa kukho i-catalyst ukuze zenze i-copolymer.
Inkqubo ye-copolymerization ibalulekile ekufumaneni iipolymers ezineempawu ezifunwayo, kubandakanya iimpawu ezilungileyo zokwenza ifilimu kunye nokuphinda zisasazeke.
4. Ukomisa ngesitshizi:
Emva koko i-emulsion ifakwa kwinkqubo yokomisa nge-spray. Oku kuquka ukutshiza i-emulsion kwigumbi elishushu, apho amanzi aphuma khona, eshiya amasuntswana aqinileyo e-polymer ephinda inyibilike.
Iimeko zokomisa ngesitshizi, ezifana nobushushu kunye nokuhamba komoya, zilawulwa ngononophelo ukuqinisekisa ukwakheka kwamasuntswana e-powder fat-flowing free-flowing.
5. Unyango lomphezulu:
Unyango lomphezulu luhlala lusetyenziselwa ukuphucula uzinzo lokugcina kunye nokusasazeka kwakhona kweempuphu zepolymer.
Izongezo ze-hydrophobic okanye ii-colloids ezikhuselayo zihlala zisetyenziswa kunyango lomphezulu ukuthintela ukuhlangana kwamasuntswana kunye nokuphucula ukusasazeka komgubo emanzini.
6. Ulawulo lomgangatho:
Amanyathelo okulawula umgangatho angqongqo ayasetyenziswa kuyo yonke inkqubo yokuvelisa. Iiparameter ezinje ngokusasazwa kobungakanani bezinto ezincinci, uxinano olukhulu, umxholo we-residual monomer kunye nobushushu bokutshintsha kweglasi ziyajongwa ukuqinisekisa ukuhambelana kwemveliso.
7. Ukupakisha:
Umgubo wepolymer wokugqibela ophinda uchitheke upakishwa kwizikhongozeli ezingangenisi manzi ukuthintela ukufunxwa kwamanzi, nto leyo enokuchaphazela kakubi ukusebenza kwawo.
Ukusetyenziswa kweMigubo yePolymer eDisparable:
I-RDP isetyenziswa kwiintlobo ngeentlobo zezicelo zokwakha eziquka izincamathelisi zeethayile, iikhompawundi ezizilinganisayo, iinkqubo zokugqiba ukugquma kwangaphandle (ii-EIFS) kunye neemortar zesamente.
Lo mgubo uphucula iipropati ezifana nokumelana namanzi, ukuguquguquka kunye nokunamathela, okunceda ukuphucula ukusebenza ngokubanzi kunye nokuqina kwezi zixhobo zokwakha.
ukuququmbela:
Umgubo wepolymer ophinda udibane sisixhobo esinokusetyenziswa ngeendlela ezahlukeneyo esinokusetyenziswa kakhulu kwishishini lokwakha. Imveliso yaso ibandakanya ukukhetha ngononophelo izinto ezikrwada, ukupholisa i-emulsion, ukomisa nge-spray, unyango lomphezulu kunye namanyathelo angqongqo okulawula umgangatho.
Ukwenziwa kweempuphu zepolymer eziphinda zichithwe yinkqubo enzima efuna ukuchaneka kunye nengqalelo kwiinkcukacha ukuze kufunyanwe imveliso esemgangathweni ophezulu eneempawu ezifunekayo kwizicelo zokwakha.
Ixesha leposi: Disemba-18-2023