Abubuwan da aka sake tarwatsawa (RDPs) suna taka muhimmiyar rawa a cikin masana'antu daban-daban, gami da gini, manne, da sutura. Ana amfani da waɗannan foda don haɓaka kaddarorin siminti, haɓaka mannewa, sassauci, da karko. Fahimtar tsarin samarwa na RDPs yana da mahimmanci ga masana'antun don tabbatar da samfuran inganci.
Raw Materials:
Samar da foda na polymer da za'a iya tarwatsawa yana farawa tare da zaɓar albarkatun ƙasa a hankali waɗanda ke tasiri kaddarorin samfurin ƙarshe. Abubuwan farko sun haɗa da resin polymer, colloid masu kariya, filastik, da ƙari daban-daban.
Resins na polymer: Ethylene-vinyl acetate (EVA), vinyl acetate-ethylene (VAE), da acrylic polymers ana amfani da su azaman babban resin polymer. Wadannan resins suna ba da mannewa, sassauci, da juriya na ruwa ga RDPs.
Colloid Masu Kariya: Ƙididdiga masu kariya na hydrophilic irin su polyvinyl barasa (PVA) ko ethers cellulose ana ƙara su don daidaita ƙwayoyin polymer yayin bushewa da adanawa, hana haɗuwa.
Plasticizers: Plasticizers suna inganta sassauci da aiki na RDPs. Abubuwan filastik na yau da kullun sun haɗa da glycol ethers ko polyethylene glycols.
Additives: Daban-daban additives kamar dispersants, thickeners, da giciye jamiái za a iya hade don inganta takamaiman kaddarorin kamar dispersibility, rheology, ko inji ƙarfi.
Dabarun Gudanarwa:
Samar da foda na polymer wanda za'a iya rarrabawa ya ƙunshi matakai masu rikitarwa da yawa, gami da emulsion polymerization, bushewar feshi, da hanyoyin jiyya.
Emulsion Polymerization:
Tsarin yana farawa tare da emulsion polymerization, inda monomers, ruwa, emulsifiers, da masu farawa suka haɗu a cikin reactor ƙarƙashin yanayin sarrafawa na zafin jiki da matsa lamba. Masu monomers suna yin polymerize don samar da barbashi na latex da aka tarwatsa cikin ruwa. Zaɓin monomers da yanayin amsawa sun ƙayyade abun da ke ciki na polymer da kaddarorin.
Tsayawa da Coagulation:
Bayan polymerization, latex yana samun kwanciyar hankali ta hanyar ƙara colloid masu kariya da stabilizers. Wannan matakin yana hana coagulation barbashi kuma yana tabbatar da kwanciyar hankali na watsawar latex. Za a iya gabatar da magungunan coagulation don haifar da sarrafa coagulation na barbashi na latex, samar da ingantaccen coagulum.
Fesa bushewa:
Ana ciyar da rarrabuwar latex da aka daidaita a cikin injin bushewa. A cikin ɗakin bushewar feshi, ana sarrafa tarwatsewar cikin ƙananan ɗigon ruwa ta amfani da nozzles masu matsa lamba. Ana gabatar da iska mai zafi lokaci guda don ƙafe abun ciki na ruwa, yana barin barbashi mai ƙarfi na polymer. Yanayin bushewa, gami da zafin iska mai shiga, lokacin zama, da yawan kwararar iska, suna tasiri ga ƙwayoyin halitta da kaddarorin foda.
Bayan Jiyya:
Bayan bushewa da bushewa, sakamakon foda na polymer yana jurewa hanyoyin jiyya don inganta aikinta da kwanciyar hankali. Waɗannan matakai na iya haɗawa da gyare-gyaren ƙasa, granulation, da marufi.
a. Gyaran Fuskar: Ana iya amfani da ma'aikatan da ke aiki a saman ko ma'aikatan haɗin kai don gyara kaddarorin kayan aikin polymer, haɓaka rarrabuwar su da dacewa da sauran kayan.
b. Granulation: Don inganta handling da dispersibility, da polymer foda na iya sha granulation don samar da uniform barbashi masu girma dabam da kuma rage ƙura samuwar.
c. Marufi: RDPs na ƙarshe suna kunshe a cikin kwantena masu jurewa danshi don hana ɗaukar danshi da kiyaye kwanciyar hankali yayin ajiya da sufuri.
Matakan Kula da Inganci:
Kula da inganci yana da mahimmanci a duk lokacin samarwa don tabbatar da daidaito da aminci a cikin kaddarorin foda na polymer da za a iya tarwatsawa. Ana sa ido da sarrafa maɓalli da yawa maɓalli a matakai daban-daban:
Ingancin Kayan Abu: Cikakken dubawa da gwajin kayan aiki, gami da polymers, colloid, da ƙari, ana gudanar da su don tabbatar da ingancinsu, tsafta, da dacewa tare da aikace-aikacen da aka yi niyya.
Kulawa da Tsari: Mahimman sigogin tsari kamar zafin jiki na amsawa, matsa lamba, ƙimar ciyarwar monomer, da yanayin bushewa ana ci gaba da kulawa da daidaita su don kiyaye ingancin samfur da daidaito.
Barbashi Halaye: Barbashi size rarraba, ilimin halittar jiki, da kuma surface Properties na polymer powders ana nazari ta amfani da dabaru irin su Laser diffraction, electron microscopy, da kuma surface area bincike.
Gwajin Aiki: Abubuwan da za a iya tarwatsawa na polymer foda suna yin gwajin aiki mai yawa don kimanta ƙarfin manne su, ƙirƙirar fim, juriya na ruwa, da kaddarorin inji bisa ga ka'idodin masana'antu da buƙatun abokin ciniki.
Gwajin kwanciyar hankali: Ana gudanar da gwaje-gwajen haɓakar tsufa da nazarin kwanciyar hankali don tantance dorewar kwanciyar hankali na RDPs a ƙarƙashin yanayin ajiya daban-daban, gami da bambancin zafin jiki da zafi.
Samar da redispersible polymer foda ya ƙunshi hadaddun jerin matakai, daga emulsion polymerization zuwa fesa bushewa da bayan-jiyya matakai. Ta hanyar kula da albarkatun ƙasa a hankali, sigogin sarrafawa, da matakan sarrafa inganci, masana'antun za su iya tabbatar da daidaiton inganci da aikin RDPs don aikace-aikace daban-daban a cikin masana'antar gini, adhesives, da masana'anta. Fahimtar rikice-rikice na tsarin samarwa yana da mahimmanci don haɓaka halayen samfuri da saduwa da buƙatun haɓakar abokan ciniki a kasuwa.
Lokacin aikawa: Maris 12-2024