Njira Yopangira Redispersible Polymer Powder

Kapangidwe ka ufa wa polima wopangidwanso (RPP) kumaphatikizapo magawo angapo, kuphatikiza ma polymerization, kuyanika kopopera, ndi kukonza pambuyo. Nayi mwachidule za momwe zinthu zimapangidwira:

1. Polima:

The ndondomeko akuyamba ndi polymerization wa monomers kubala khola polima kubalalitsidwa kapena emulsion. Kusankhidwa kwa ma monomers kumatengera zomwe mukufuna komanso kugwiritsa ntchito kwa RPP. Ma monomers wamba amaphatikiza vinyl acetate, ethylene, butyl acrylate, ndi methyl methacrylate.

1. Kukonzekera kwa Monomer: Ma Monomer amayeretsedwa ndikusakanizidwa ndi madzi, zoyambitsa, ndi zina zowonjezera mu chotengera cha reactor.
2. Polymerization: Kusakaniza kwa monomer kumapita ku polymerization pansi pa kutentha, kupanikizika, ndi chipwirikiti. Oyambitsa amayamba kuchitapo kanthu polima, zomwe zimapangitsa kuti pakhale unyolo wa polima.
3. Kukhazikika: surfactants kapena emulsifiers anawonjezera kuti bata polima kubalalitsidwa ndi kupewa coagulation kapena agglomeration wa polima particles.

2. Kuyanika Utsi:

Pambuyo polymerization, ndi polima kubalalitsidwa ndi pansi utsi kuyanika kusintha kukhala youma ufa mawonekedwe. Kuyanika kwa kupopera mbewu mankhwalawa kumaphatikizapo kuyatsa madziwo kukhala madontho abwino, omwe amawumitsidwa mumtsinje wotentha.

1. Atomization: Kubalalitsa kwa polima kumapoperedwa ku mphuno yopopera, komwe kumapangidwira m'malovu ang'onoang'ono pogwiritsa ntchito mpweya woponderezedwa kapena atomizer ya centrifugal.
2. Kuyanika: Madonthowa amalowetsedwa m’chipinda chowumitsira, pomwe amakumana ndi mpweya wotentha (nthawi zambiri amatenthedwa mpaka kutentha kwapakati pa 150 ° C mpaka 250 ° C). Kuthamanga kwamadzi kwamadzi kuchokera m'malovu kumabweretsa kupanga tinthu tating'onoting'ono.
3. Kusonkhanitsa Tinthu ting'onoting'ono: Tinthu tating'onoting'ono towumitsidwa timatengedwa kuchokera m'chipinda chowumitsira pogwiritsa ntchito mvula yamkuntho kapena zosefera zamatumba. Fine particles akhoza kudutsanso gulu kuchotsa oversized particles ndi kuonetsetsa yunifolomu tinthu kukula kugawa.

3. Pambuyo pokonza:

Pambuyo poyanika utsi, RPP imachita masitepe pambuyo pokonza kuti ipititse patsogolo katundu wake ndikuwonetsetsa kukhazikika kwazinthu.

1. Kuziziritsa: RPP yowuma imakhazikika kutentha kwa chipinda kuti iteteze kuyamwa kwa chinyezi ndikuwonetsetsa kukhazikika kwazinthu.
2. Kupaka: RPP yokhazikika imayikidwa m'matumba osamva chinyezi kapena zotengera kuti ziteteze ku chinyezi ndi chinyezi.
3. Kuwongolera Ubwino: RPP imayesedwa kuti iwonetsetse kuti ili ndi thupi ndi mankhwala, kuphatikiza kukula kwa tinthu, kachulukidwe, chinyezi chotsalira, ndi polima.
4. Kusungirako: RPP yopakidwa imasungidwa m'malo olamulidwa kuti ikhale yokhazikika komanso yashelufu mpaka itatumizidwa kwa makasitomala.

Pomaliza:

Kupanga kwa redispersible polima ufa kumaphatikizapo polymerization ya ma monomers kuti apange kubalalitsidwa kwa polima, kutsatiridwa ndi kuyanika kutsitsi kutembenuza kubalalitsidwa kukhala mawonekedwe owuma a ufa. Masitepe okonza pambuyo pake amatsimikizira mtundu wa malonda, kukhazikika, ndi kulongedza kuti asungidwe ndi kugawa. Njirayi imathandizira kupanga ma RPP osinthika komanso ogwiritsidwa ntchito mosiyanasiyana omwe amagwiritsidwa ntchito m'mafakitale osiyanasiyana, kuphatikiza zomangamanga, utoto ndi zokutira, zomatira, ndi nsalu.