Sabon tsari na redispersible latex foda

Dabarar bango

Redividable roba foda ne fari m foda sarrafa ta hanyar fesa da bushewa na musamman latex.Ana amfani da shi galibi azaman ƙari mai mahimmanci don “turmi-mix dubu” da sauran busassun busassun turmi don kayan aikin injiniya na bango na waje..Foda da aka saba amfani dashi shine copolymer na vinyl acetate, wanda shine farin foda wanda zai iya zamewa da yardar kaina kuma yana iya tarwatsewa cikin ruwa don samar da ingantaccen emulsion tare da aikin iri ɗaya kamar na latex na asali.A matsayin abu mai mahimmanci a cikin samfuran busassun cakuɗen turmi, foda mai yuwuwar sake tarwatsewa yana taka muhimmiyar rawa a busasshen turmi mai gauraye da siminti.Zai iya inganta ƙarfin haɗin gwiwa da haɗin kai na kayan.Inganta ƙarfin lanƙwasawa na roba da ƙarfin sassauƙa na kayan.Inganta juriya-narkewar kayan.Inganta juriya na yanayi, dorewa, juriya na kayan aiki.Inganta hydrophobicity na abu kuma rage sha ruwa.Inganta iya aiki da rage raguwar kayan aiki.Zai iya hana tsagewa yadda ya kamata.(I) Inganta ƙarfin haɗin kai da haɗin kai

A cikin busassun kayan turmi na siminti, yana da matukar mahimmanci don ƙara foda na roba da za a iya tarwatsawa.A bayyane yake don inganta ƙarfin haɗin gwiwa da haɗin kai na kayan.Wannan shi ne saboda shigar da ƙwayoyin polymer a cikin pores da capillaries na matrix siminti, da kuma sakamakon kyakkyawan ƙarfin haɗin gwiwa bayan hydration tare da ciminti.Saboda kyakkyawan mannewa na polymer resin kanta, zai iya inganta mannewa na siminti turmi kayayyakin zuwa substrates, musamman bonding inorganic binders kamar siminti zuwa Organic substrates kamar itace, fiber, PWC, da kuma PS.Haɓakawa na rashin aikin yi yana da tasiri mai mahimmanci.

Ingantacciyar lankwasawa da juriya mai ƙarfi

A cikin kwarangwal ɗin da aka kafa bayan turmin siminti ya sha ruwa, fim ɗin polymer yana da ƙarfi kuma yana da ƙarfi, kuma yana aiki kamar haɗin gwiwa mai motsi tsakanin ɓangarorin simintin siminti, wanda zai iya jure babban nakasawa da rage damuwa.Ingantacciyar juriya da lankwasawa

Inganta juriya tasiri

Redispersible latex foda ne mai thermoplastic guduro.Fim ɗin mai laushi wanda aka rufe a saman ƙwayoyin turmi zai iya ɗaukar tasirin ƙarfin waje kuma ya huta ba tare da karya ba, don haka inganta tasirin tasirin turmi.

Inganta hydrophobicity kuma rage sha ruwa

Ƙara foda mai sake tarwatsewa zai iya inganta ƙananan ƙirar siminti.Polymer ɗinsa yana samar da hanyar sadarwa mara jujjuyawa yayin aikin siminti hydration, yana rufe capillary a cikin gel siminti, yana toshe sha ruwa, yana hana shigar ruwa, kuma yana haɓaka rashin ƙarfi.

Inganta juriya da karko

Ƙara foda robar da za'a iya tarwatsawa na iya ƙara haɓaka tsakanin barbashi na siminti da kuma fim ɗin polymer.Haɓaka ƙarfin haɗin gwiwa daidai yake yana inganta ƙarfin turmi don jure damuwa mai ƙarfi, yana rage yawan lalacewa, inganta juriyar lalacewa, kuma yana tsawaita rayuwar turmi.

Inganta daskare-narke da kwanciyar hankali da hana fashewar abu yadda ya kamata

Redispersible latex foda, da filastik tasirin resin thermoplastic zai iya shawo kan lalacewar da ke haifar da haɓakar zafi da haɓakar kayan turmi na siminti wanda ya haifar da canjin yanayin zafi.Cin nasara da gazawar simintin siminti mai sauƙi, irin su babban bushewar bushewa da raguwa mai sauƙi, zai iya sa kayan aiki ya fi dacewa, ta haka inganta kwanciyar hankali na dogon lokaci.Duk da haka, akwai wasu matsaloli a cikin tsarin samar da redispersible latex foda a cikin fasahar da ta gabata, wanda ya haifar da cewa ƙwayoyin latex ba su da kyau kuma ba su da kyau, kuma agglomeration yana yiwuwa ya faru a lokacin samarwa, sufuri da ajiya.Ta haka yana shafar tasirin amfaninsa.

Wannan tsari za a iya gane ta hanyar da wadannan fasaha mafita: a samar tsari na redispersible baya-tarwatsa latex foda, wadannan kayan da aka tsara bisa ga haɗe nauyi adadin polymer emulsion 72-85%;colloid mai kariya 4-9%;wakili na saki 11 -15%;Additives masu aiki 0-5%;samar da wadannan tsari

a, shirye-shiryen colloid mai karewa: a cikin kettle mai amsawa, foda mai kariya na adadin batching ba a haɗa shi da ruwa ba kuma a sanya shi mai zafi don a canza shi zuwa manne, sannan a ƙara defoamer, mai zafi kuma a adana shi don samar da colloid mai kariya mai haske. , don haka danko ya kai 2500as, m abun ciki ya kai 19.5-20.5%.

b.Shiri na watsawa: sanya shirye-shiryen m colloid a cikin kwandon shiri, sa'an nan kuma ƙara polymer emulsion na batching adadin, Mix a ko'ina, sa'an nan kuma ƙara defoamer da kuma ƙara ruwa don daidaita danko zuwa 70-200Mas, da m abun ciki ya kai 39% - 42%, dumama zuwa 50-55 °

C, don amfani;

C, bushewar busasshen girgije: buɗe hasumiya mai bushewar girgije, lokacin da yawan zafin jiki na mashigar abinci a saman hasumiya mai bushewar girgije ya yi zafi har zuwa 140-150 DEG C, ana isar da watsawar da aka shirya zuwa mashigar abinci a saman hasumiya bushewar feshi tare da famfo mai dunƙulewa.A cikin tashar abinci, ruwan tarwatsewa yana atomized zuwa ƙananan ɗigon ruwa tare da diamita na 10-100 microns ta cikin babban faifan atomization na centrifugal a cikin tashar abinci.A lokaci guda kuma, ƙananan ɗigon ruwa suna da sauri da sauri tare da iska mai zafi mai zafi, kuma a lokaci guda, ana ƙara mai saki a cikin iska mai zafi., Lokacin da ƙananan ɗigon ruwa ya yi zafi don samar da danko, mai aikawa yana manne da ƙananan ƙananan ƙananan ƙananan a cikin lokaci, sa'an nan kuma ruwan da ke cikin ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙananan ƙwayoyin suna da sauri da sauri zuwa bushewa ta hanyar iska mai zafi don samar da iskar gas. m cakuda;

d, sanyaya da rabuwa: kiyaye yawan zafin jiki na iska na feshin bushewa hasumiya ta iska a 79 ° C-81 ° C, kuma ana fitar da cakuda gas mai ƙarfi daga tashar iska a ƙasan hasumiya mai bushewa. , sannan a shigo da shi cikin babban jakar tace bayan an huce.An raba foda a cikin iska kuma an rarraba foda da aka ware kuma a siffata don samun samfurin da aka gama na sake tarwatsa foda.Takamaiman Embodiments Ƙara wani adadin ruwa mai tsafta daidai da na'ura mai tsafta, ɗaga zafin jiki zuwa kusan 50 ° C, kunna injin motsa jiki, ƙara ƙwayar colloid mai kariya daidai da 25% na adadin ruwan da aka saka a cikin reactor, kuma tsarin ƙara ya kamata ya kasance a hankali Ƙara shi don hana foda daga karuwa a cikin ruwa.Kada ka ƙara shi zuwa gefen bangon reactor.Bayan an gama ƙarawa, ƙara na'urar cire foamer daidai da 1% na jimlar adadin.Ana ba da shawarar yin amfani da defoamer na tushen silicone.Rufe ramin ciyarwa kuma zafi har zuwa 95 ° C.An keɓe shi na sa'a 1, ruwan da ke cikin reactor ya zama manne mai haske, ba tare da farin barbashi ba, samfuri, ɗankowar gwaji da abun ciki mai ƙarfi, yana buƙatar danko don isa kusan 2500as, da ingantaccen abun ciki don isa 19.5 ~ 20.5%.Ƙara kolloid ɗin da aka shirya a cikin kettle mai haɗawa, sa'an nan kuma ƙara emulsion na polymer daidai gwargwado, haɗa colloid mai kariya da emulsion daidai, kuma ƙara defoamer daidai, gabaɗaya daidai da kusan 0.1% na jimlar adadin, kuma ya kamata a yi amfani da defoamer ta hanyar. kanka Emulsified silicone disinfectant

Wakilin kumfa, kuma ƙara ruwa don daidaita danko zuwa 70-200pas, da ingantaccen abun ciki zuwa 39% -42%.Tada zafin jiki zuwa 5055C.Gwajin samfur, shirye don amfani.

Ruwan da ke cikin digo zai bushe da sauri ta hanyar iska mai zafi mai zafi, sa'an nan kuma za a fitar da cakuda gas mai ƙarfi daga hasumiya mai bushewa da sauri, yana kiyaye zafin jiki na iska a ƙananan tashar iska na kayan bushewa a. 79 ° C -81 ° Co. Gas-m cakuda da aka shiryar daga bushewa kayan aiki Bayan barin, ƙara dehumidified 5 ° C bushe iska don kwantar da hankali, da kuma iska kwarara dauke da foda aka shigar a cikin babban jakar tace, da foda a ciki. An raba guguwar iska ta hanyoyi biyu na rabuwar guguwa da kuma rabuwar tacewa., An rarraba foda da aka raba da kuma sieved don samun redispersible latex foda tsibiran.

Kai kilogiram 1,000 na ruwa mai tarwatsewa tare da ƙaƙƙarfan abun ciki na 42% zuwa hasumiya mai bushewa a wani matsa lamba, kuma ƙara 51 kilogiram na wakili na saki bisa ga hanyar da ke sama a lokaci guda, bushe ta hanyar fesa da raba ƙarfi da gas, kuma sami. wani foda fitarwa na 461 kg tare da dacewa fineness.