Kwimeko yokwenyani yemarike, iintlobo ezahlukeneyo zeepowder zelatex zinokuchazwa njengezimangalisayo. Ngenxa yoko, ukuba umsebenzisi akanazo iingcali zakhe zobungcali okanye izixhobo zokuvavanya, unokukhohliswa kuphela ngabathengisi abaninzi abanganyanisekanga kwimarike. Okwangoku, kukho ezinye iindlela zokufumanisa ezijikeleza kwi-Intanethi, ezinje ngokujonga ukuxinana kwesisombululo esinyibilikisiweyo kunye nemeko yokwenza ifilimu. Ezi ndlela zisekelwe kuphela kumphezulu, kwaye azinakubonelela ngenkxaso yesayensi yendlela yokugqiba komsebenzisi ukuba imveliso ifanelekile na kuye. Ke ngoko, kweli nqaku, siza kwazisa ngokucwangcisiweyo ezinye iingcamango ezisisiseko zepowder yerabha simahla kwiinkalo zokwakheka kwezinto ezisisiseko, iimpawu, kunye nenjongo yokusebenzisa ipowder yerabha, ukuze oogxa bakhe bakwazi ukugweba ngokwabo okulungileyo nokulungileyo.
Okokuqala, ingcamango esisiseko yokuqonda indlela eveliswa ngayo ipowder yepolymer esasazekayo yokwenyani. (Ipowder yelatex esasazekayo yipowder yepolymer eneempawu ezisasazekayo eziguqulwa kwi-emulsion ye-resin yokwenziwa ngokongeza ezinye izinto kwaye zomiswe nge-spray. Xa amanzi esetyenziswa njengendawo yokusasaza, angenza i-emulsion kwaye abe nepowder yepolymer esasazekayo. Isasazekayo Ipowder yelatex idla ngokuba yipowder emhlophe, kodwa embalwa ineminye imibala.) Ipowder yelatex esasazekayo kufuneka iquke: i-polymer resin, izongezo, i-colloid ekhuselayo, i-anti-caking agent. 1. I-polymer resin ikwinxalenye ephambili yamasuntswana epowder yelatex, kwaye ikwayiyona nto iphambili yepowder yelatex esasazekayo, efana ne-polyvinyl acetate/vinyl resin, njl. Umgangatho we-polyvinyl acetate eveliswa ngabavelisi abahlukeneyo kunye neenkqubo ezahlukeneyo ziya kuchaphazela ngokuthe ngqo umgangatho wepowder yerabha eveliswayo. Ukuqinisekisa uzinzo lomgangatho wemveliso, iifektri ezinkulu eziqhelekileyo zihlala zisebenzisa uphawu lwe-polyvinyl acetate ukuvelisa ipowder yepolymer esasazekayo. Apha singathabatha umzekelo osebenzayo. Ngowama-2015, uphawu oludumileyo lwasekhaya lomgubo webhurabha lwasekhaya lwathatha indawo ye-polyvinyl acetate emulsion engabizi kakhulu ukuze kuveliswe umgubo we-polymer ophinda uchitheke ngenxa yezizathu zolawulo. Ngenxa yoko, kwabangelwa kukuguquguquka okukhulu komgangatho. kwabangela umonakalo ongenakulungiswa. Kwanabanye abathengisi abangathembekanga apha basebenzisa i-latex emhlophe nezinye izinto ezifana nayo endaweni yokuyisusa uthuli.
2. Izongezo (zangaphakathi) zisebenza kunye ne-resin ukuguqula i-resin, umzekelo, i-plasticizer enciphisa ubushushu bokwenza ifilimu ye-resin (ngesiqhelo ii-resin ze-vinyl acetate/ethylene copolymer azidingi ukongeza ii-plasticizer), ayisiyo yonke i-latex Powder enezongezo. I-latex powder ephinda inyibilike yabavelisi abaninzi abancinci ine-index yobushushu bokwenza ifilimu kwaye ayinakubizwa ngokuba yi-glass transition temperature, ekwayiparameter ebalulekileyo yomgangatho we-rubber powder ngokwayo.
3. I-colloid ekhuselayo Umaleko wezinto ezihlala emanzini ezigqunywe phezu kwamasuntswana e-latex powder aphinda aqhekeke, kwaye umzimba okhuselayo wemibhobho emininzi ye-latex powder ephinda iqhekeke yi-polyvinyl alcohol. I-polyvinyl alcohol apha kukuthatha inxaxheba kwinkqubo yokomisa ngokutshiza kunye, endaweni yokuxuba nje. Nantsi enye ingxaki eqhelekileyo kwimarike. Iiworkshops ezininzi ezincinci ezithi zivelisa umgubo werabha zenza nje inkqubo yokuxuba ngokwasemzimbeni. Le mveliso ayinakubizwa ngokungqongqo ngokuba yi-polymer powder esasazekayo.
4. Izinto ezongeziweyo (zangaphandle) Izinto ezongeziweyo ukwandisa ukusebenza kweempuphu zelatex eziphinda zichithwe, njengokongeza ii-superplasticizers kwezinye iimpuphu zelatex ezinyibilikisiweyo. Njengezongezo zangaphakathi, ayizizo zonke iintlobo zempuphu yepolymer ephinda ichithwe esetyenziswayo. Zonke iimpuphu zelatex ziqulathe esi songezo.
5. Isixhobo sokulwa nokubopha. Isixhobo sokuzalisa izimbiwa esincinci, esisetyenziselwa kakhulu ukuthintela umgubo we-latex ekuhlanganiseni ngexesha lokugcina nokuthuthwa kunye nokwenza lula ukuhamba komgubo we-latex (olahlwa kwiingxowa zephepha okanye kwiinqanawa). Esi sisixhobo sokuzalisa sikwayinxalenye eya kuchaphazela kakhulu iindleko zokuvelisa kunye nokusebenza kakuhle komgubo we-polymer osasazekayo. Iipowder zerabha ezininzi ezixabiso liphantsi ezithengiswayo ziyanyusa umlinganiselo wokugcwalisa ukuze kuncitshiswe iindleko. Ngamafutshane, sisalathisi somxholo wothuthu esidla ngokubhekiselwa kuso. Iifiltha ezahlukeneyo ezongezwe ngabavelisi abahlukeneyo ziya kuchaphazela nesiphumo sokuxuba umgubo werabha kunye nesamente. Ngenxa yokuba ukubopha kwee-adhesives ezingaphiliyo kwizinto kufezekiswa ngomgaqo wokubethela ngoomatshini.
Ixesha leposi: Epreli-26-2024