Ekuqaleni okuhloswe ngayo ikakhulukazi ukukhishwa, izinketho ezintsha zezinhlanganisela zokhuni-zepulasitiki zilungiselelwe ukuvula iminyango yezicelo zokubumba umjovo.
Ekubumbeni ama-WPC, i-pellet efanelekile kufanele ibe ngusayizi we-BB encane futhi ibe yindilinga ukuze kuzuzwe isilinganiso esiphezulu sendawo ukuya kuvolumu.
I-Luke's Toy Factory, e-Danbury, e-Conn., ibifuna okokusebenza kwe-biocomposite yamaloli ayo amathoyizi nezitimela.Ifemu ibifuna okuthile okubukeka ngokhuni lwemvelo nokuzwakala okungase kufakwe umjovo ukuze kwenziwe izingxenye zemoto.Babedinga ukwaziswa okungafakwa umbala ukuze bagweme inkinga yokuxebuka kukapende.Babefuna nempahla ehlala isikhathi eside noma ishiywe ngaphandle.I-Green Dot's Terratek WC ihlangabezana nazo zonke lezi zidingo.Ihlanganisa ukhuni kanye nepulasitiki egaywe kabusha ku-pellet encane elungele kahle ukubumba umjovo.
Ngenkathi ama-wood-plastic composite (WPCs) agqashuka endaweni yesigameko ngeminyaka yawo-1990s njengoba izinto ezisetshenziswa ngokuyinhloko zafakwa emabhodini ukuze kudonswe futhi kubiyelwe, ukwenziwa kahle kwalezi zinto zokubumba umjovo kusukela lapho kuye kwahlukanisa kakhulu ukusetshenziswa kwazo okungaba khona njengezinto ezihlala isikhathi eside nezisimeme.Ubungane bemvelo isici esikhangayo sama-WPC.Ziza ne-carbon footprint ephansi kakhulu kunezinto ezisekelwe ku-petroleum futhi zingakhiwa kusetshenziswa imicu yokhuni ebuyiselwe kuphela.
Uhlu olubanzi lwezinketho zezinto zokwakha ze-WPC luvula amathuba amasha wababumba.Izimpahla zepulasitiki ezigaywe kabusha nezibolayo zingase zithuthukise ukusimama kwalezi zinto.Kukhona inani elikhulayo lezinketho zobuhle, ezingasetshenziswa ngokushintsha izinhlobo zezinkuni kanye nosayizi wezinhlayiya zokhuni kunhlanganisela.Ngamafuphi, ukwenziwa ngcono kokubumba umjovo kanye nohlu olukhulayo lwezinketho ezitholakala kuma-compounders kusho ukuthi ama-WPC ayinto eguquguqukayo kakhulu kunalokho okwakucatshangwa ngaphambili.
YINI OKUMELE ILINDE UMKHUMBI KUBATHUNZI Isibalo esandayo sezithako esihlinzeka ngama-WPC ngendlela ye-pellet.Izibunzi zokujova kufanele ziqaphele uma kuziwa kulokho okulindelwe kuma-compounders ezindaweni ezimbili ikakhulukazi: usayizi we-pellet nokuqukethwe komswakama.
Ngokungafani nalapho ukhipha ama-WPC okuhlobisa nokubiyela, usayizi we-pellet ofanayo ngisho nokuncibilika ubalulekile ekubunjweni.Njengoba ama-extruders akudingeki akhathazeke ngokugcwalisa i-WPC yawo esikhunjeni, isidingo sosayizi we-pellet ofana asikhulu kangako.Ngakho-ke, kubalulekile ukuqinisekisa ukuthi isithako esihlanganisayo sinezidingo zokubumba umjovo engqondweni, futhi asigxili kakhulu ekusetshenzisweni kwasekuqaleni nasekuqaleni okwakuvame kakhulu kwama-WPC.
Uma ama-pellets emakhulu kakhulu anomkhuba wokuncibilika ngokungalingani, enze ukungqubuzana okwengeziwe, futhi kubangele umkhiqizo wokugcina ongaphansi kwesakhiwo.I-pellet efanelekile kufanele ilingane nosayizi we-BB encane futhi iyindilinga ukuze kuzuzwe isilinganiso esifanelekile sobuso kuya kuvolumu.Lezi zilinganiso zenza kube lula ukomisa futhi zisize ukuqinisekisa ukugeleza okushelelayo kuyo yonke inqubo yokukhiqiza.Izibunzi zokujova ezisebenza nama-WPC kufanele zilindele ukuma okufanayo nokufana ezihlotshaniswa namapulangwe epulasitiki endabuko.
Ukoma futhi kuyikhwalithi ebalulekile ongayilindela kumapellets e-WPC enhlanganisela.Amazinga omswakama kuma-WPC azokhuphuka kanye nenani lokugcwalisa izinkuni kunhlanganisela.Nakuba kokubili ukukhipha kanye nokubumba komjovo kudinga umswakama ophansi ukuze uthole imiphumela ehamba phambili, amazinga omswakamo anconyiwe aphansi kancane ekubumbeni umjovo kunawokukhipha.Ngakho futhi, kubalulekile ukuqinisekisa ukuthi i-compounder icabangele izibumbi zokujova ngesikhathi sokukhiqiza.Ukubumba umjovo, amazinga omswakama kufanele abe ngaphansi kuka-1% ukuze uthole imiphumela emihle.
Lapho abahlinzeki bempahla bezibophezela ukuletha umkhiqizo osuvele unamazinga amukelekayo omswakamo, ababumba bemijovo bachitha isikhathi esincane bomisa ama-pellets ngokwabo, okungaholela ekongeni isikhathi nemali enkulu.Izibunzi zokujova kufanele zicabangele ukuyothenga ama-pellets e-WPC athunyelwe ngumkhiqizi anamazinga omswakama angaphansi kuka-1%.
IFOMU KANYE NEZINCABANGO ZAMATHULUSI Isilinganiso sokhuni nepulasitiki ngendlela ye-WPC izoba nomthelela othize ekuziphatheni kwayo njengoba iqhubeka nenqubo yokukhiqiza.Iphesenti lezinkuni elikhona ku-composite lizoba nomthelela ku-Melt-flow index (MFI), isibonelo.Njengomthetho, ukhuni oluningi olungezwe ku-composite, i-MFI ephansi.
Iphesenti lezinkuni lizophinde libe nomthelela emandleni nokuqina komkhiqizo.Ngokuvamile, uma kunezelwa ukhuni, umkhiqizo uqina.Ukhuni lungenza amaphesenti angama-70 engqikithi yenhlanganisela yokhuni-yepulasitiki, kodwa ukuqina okuwumphumela kuvela ngenxa yokudumba komkhiqizo wokugcina, kuze kube yilapho kungase kube sengozini yokuba brittle.
Ukugxiliswa okuphezulu kokhuni kuphinda kufinyeze izikhathi zomjikelezo womshini ngokungeza isici sokuzinza kwe-dimensional kwinhlanganisela yokhuni nepulasitiki njengoba iphola esibunjeni.Lokhu kuqiniswa kwesakhiwo kuvumela ipulasitiki ukuthi isuswe ekushiseni okuphezulu lapho amapulasitiki avamile asathambile kakhulu ukuthi angasuswa ekubunjweni kwawo.
Uma umkhiqizo uzokhiqizwa kusetshenziswa amathuluzi akhona, ubukhulu besango kanye nokuma okujwayelekile kwesikhunta kufanele kufake engxoxweni yobukhulu bezinhlayiya zezinkuni.Izinhlayiya ezincane cishe zizosebenza kangcono ngamathuluzi anamasango amancane nezandiso ezincane.Uma ezinye izici seziholele ukuthi abaklami bazinze kusayizi omkhulu wezinhlayiyana zokhuni, khona-ke kungase kube usizo ukuhlela kabusha amathuluzi akhona ngokufanele.Kodwa, uma kubhekwa izinketho ezikhona zamasayizi wezinhlayiyana ezahlukene, lo mphumela kufanele ugwemeke ngokuphelele.
IYAQHUBEKA Ama-WPC Imininingwane yokucubungula nayo inomkhuba wokuguquguquka kakhulu ngokusekelwe ekwakhiweni kokugcina kwama-pellets e-WPC.Nakuba ukucutshungulwa okuningi kusalokhu kufana nokwamapulasitiki endabuko, izilinganiso ezithile zokhuni-kuya-epulasitiki nezinye izithasiselo ezihloselwe ukufeza ukubukeka, umuzwa, noma izici ezithile ezifiselekayo kungase kudingeke ukuba zibalwe lapho kusetshenzwa.
Ama-WPC abuye ahambisane nama-ejenti akhipha amagwebu, isibonelo.Ukwengezwa kwalawa ma-ejenti agwebu kungakha into efana ne-balsa.Lokhu kuyimpahla ewusizo lapho umkhiqizo oqediwe udinga ukuba ungasindi noma ube buoyant.Ngenhloso yesibumbi somjovo, nokho, lesi ngesinye isibonelo sokuthi ukwakheka okuhlukahlukene kwezinhlanganisela zokhuni nepulasitiki kungaholela ekubeni kube nokuningi okufanele kucatshangelwe kunangesikhathi lezi zinto ziqala ukuzodayisa.
Amazinga okushisa okucubungula indawo eyodwa lapho ama-WPC ehluke kakhulu kumapulasitiki avamile.Ama-WPC ngokuvamile acubungula emazingeni okushisa acishe abe ngu-50° F ngaphansi kwento efanayo engagcwalisiwe.Izithako eziningi zokhuni zizoqala ukushisa cishe ngo-400 F.
Ukugunda kungenye yezinkinga ezivame ukuvela lapho kusetshenzwa ama-WPC.Uma uphusha into eshisa kakhulu ngesango elincane kakhulu, ukungqubuzana okwenyukayo kunomkhuba wokushisa izinkuni futhi kuholele ekulandeleni kwe-telltale futhi ekugcineni kungalulaza ipulasitiki.Le nkinga ingagwenywa ngokuqhuba ama-WPC ezingeni lokushisa eliphansi, ukuqinisekisa ukuthi usayizi wesango wanele, nokususa noma yikuphi ukujika okungadingekile noma ama-engeli angakwesokudla endleleni yokucubungula.
Amazinga okushisa aphansi uma kuqhathaniswa asho ukuthi abakhiqizi abavamisile ukuzuza amazinga okushisa aphezulu kunawe-polypropylene evamile.Lokhu kunciphisa umsebenzi onzima wokukhipha ukushisa ohlelweni lokukhiqiza.Asikho isidingo sokwengezwa kwemishini yokupholisa, isikhunta esiklanyelwe ukwehlisa ukushisa, noma ezinye izinyathelo ezingavamile.Lokhu kusho ukuthi izikhathi zomjikelezo ezincishisiwe kubakhiqizi, ngaphezu kwezikhathi zomjikelezo ezivele zishesha ngenxa yokuba khona kwezigcwalisi zemvelo.
HHAYI NJE EKUKHIPHA ama-WPCs akuwona nje okokuhlobisa.Zilungiselelwa ukubumba umjovo, okuzivulela uxhaxha lwezinhlelo zokusebenza zomkhiqizo omusha, kusukela kufenisha yotshani kuya kumathoyizi ezilwane.Izinhlobonhlobo zokwakheka ezitholakalayo manje zingathuthukisa izinzuzo zalezi zinto ngokuzinza, ukuhlukahluka kobuhle, nezici ezifana nokuguquguquka noma ukuqina.Isidingo salezi zinto sizokhula kuphela njengoba lezi zinzuzo zaziwa kangcono.
Ezibumbeni zomjovo, lokhu kusho inani lezinto eziguquguqukayo eziqondene nendlela ngayinye okufanele zibalwe ngayo.Kodwa futhi kusho ukuthi ababumbi kufanele balindele umkhiqizo ofaneleka kangcono ukubumba umjovo kune-feedstock eyayiqokwe ukuthi ikhishelwe emabhodini.Njengoba lezi zinto ezisetshenziswayo ziqhubeka nokwakheka, ababumba bemijovo kufanele bakhuphule izinga labo mayelana nezici abalindele ukuzibona ezintweni eziyinhlanganisela ezilethwa abahlinzeki babo.
Okufakiwe okucindezelwe okubandayo okufakwe ngaphakathi kuhlinzeka ngenye indlela eqinile futhi engabizi ekubekeni ukushisa noma ukufaka okufakwe intambo nge-ultrasonically.Zitholele izinzuzo futhi ukubone kusebenza lapha.(Okuqukethwe Okuxhasiwe)
Qala ngokukhetha izinga lokushisa eliqondiwe lokuncibilika, bese uhlola kabili amashidi edatha ukuze uthole izincomo zomhlinzeki we-resin.Manje okunye...
Isikhathi sokuthumela: Aug-06-2019