Kodi ufa wa putty umaupanga bwanji?

Posachedwapa, pakhala kufunsa kawirikawiri kuchokera kwamakasitomala okhudza ufa wa putty, monga chizolowezi chake chopuntha kapena kulephera kwake kupeza mphamvu. Amadziwika kuti kuwonjezeracellulose etherndikofunikira kupanga putty ufa, ndipo ogwiritsa ntchito ambiri samawonjezera dispersible latex ufa. Anthu ambiri samawonjezera ufa womatira kuti apulumutse ndalama, koma ichi ndiyenso chinsinsi cha chifukwa chake putty wamba amakonda kupukuta komanso zovuta zamtundu wazinthu!

Redispersible latex ufa

Putty wamba (monga 821 putty) amapangidwa makamaka ndi ufa woyera, guluu wowuma pang'ono, ndi CMC (hydroxymethyl cellulose), ndipo palinso omwe amapangidwa ndi methyl cellulose ndi ufa wa ntchentche ziwiri. Mtundu uwu wa putty ulibe zomatira ndipo sulimbana ndi madzi.

Pambuyo pakusungunuka kwa cellulose ndi madzi, imatha kuyamwa madzi ndikukulitsa. Mayamwidwe amadzi azinthu zochokera kwa opanga osiyanasiyana ndi osiyana, ndipo mapadi amatenga gawo losunga madzi mu putty. Pambuyo kuyanika, putty imakhala ndi mphamvu kwakanthawi kochepa, koma pakapita nthawi imataya ufa, womwe umagwirizana kwambiri ndi kapangidwe ka cellulose yokha. Mtundu uwu wa putty ndi wotayirira, umayamwa kwambiri madzi, umakonda kukhala ufa, ulibe mphamvu, komanso kutha. Ngati topcoat itayikidwa pa iyo, PVC yotsika imakhala ndi matuza; PVC yapamwamba imakonda kutaya madzi m'thupi, kuchepa, ndi kusweka; Chifukwa cha kuchuluka kwa mayamwidwe amadzi, zimakhudza mapangidwe a filimu ndi mapangidwe a topcoat.

Kuti muwongolere zomwe zili pamwambazi ndi putty, mutha kusintha mawonekedwe a putty ndikuwonjezera ufa wina wa latex kuti muwonjezere mphamvu yamtsogolo ya putty. Sankhani hydroxypropyl methyl cellulose wapamwamba kwambiriMtengo wa HPMCndi chitsimikizo chaubwino.Hydroxypropyl methyl celluloseali ndi kuchuluka kwa madzi osungiramo ma cellulose apamwamba kwambiri, omwe amatha kuthira madzi amtundu wa putty ndikuwongolera mtundu wa putty.

Kodi chidzakhala chotani pa ufa wa putty ngati kuchuluka kwa ufa wa latex wowonjezeredwa panthawi yopanga putty sikukwanira, kapena ngati ufa wochepa wa latex umagwiritsidwa ntchito?

Kuchuluka kosakwanira kwaredispersible latex ufakuwonjezeredwa ku putty ndiko kuwonetseredwa kwachindunji kwa wosanjikiza wotayirira, kupukuta pamwamba, kugwiritsa ntchito utoto wochuluka popaka topcoat, kusanja bwino, kusanja bwino pambuyo popanga filimu, komanso kuvutikira kupanga filimu ya utoto wandiweyani. Makoma oterowo amakonda kusenda, matuza, kusenda, ndi kusweka kwa filimu ya utoto. Ngati otsika putty ufa wasankhidwa, mlingo wa kuvulaza kwa matupi a anthu chifukwa cha mpweya woipa monga formaldehyde wopangidwa pakhoma ndi wodziwikiratu.

Kuti musinthe momwe zinthu zilili pano, m'pofunika kuchotsa putty onse otsika osasiya zotsalira, ndiyeno kugula putty oyenerera ndi latex utoto! Pofuna kupewa kutayika kosafunikira, makasitomala ayenera kuyesa kusankha zinthu kuchokera kuzinthu zazikulu zokhala ndi chitsimikizo chamtundu kuti zitheke kusankha kwa putty.

Kampani ya longou imagwira ntchito yopanga ndi kugulitsa ulusi wamatabwa, wowuma etha, hydroxypropyl methyl cellulose, redispersible latex powder.