Thermoplastic Polyurethane (TPU) ke thepa e feto-fetohang e tsebahalang ka ho tšoarella le ho mamella ha eona. Leha ho le jwalo, ditshebedisong tse ding, ho ka ba le tlhoko ya ho fokotsa ho thatafala ha di-granule tsa TPU ha ka nako e le nngwe ho ntse ho eketsa ho hanyetsa ho kgohlahala.
Maano a ho fokotsa ho thatafala ha TPU le ho ntlafatsa ho leka-lekana ha ho hanyetsa ho kgohlopa.
1. Ho Kopanya le Disebediswa tse Bonolo
E 'ngoe ea litsela tse bonolo ka ho fetisisa tsa ho fokotsa ho thatafala ha TPU ke ka ho e kopanya le thepa e bonolo ea thermoplastic. Likhetho tse tloaelehileng li kenyelletsa TPE (Thermoplastic Elastomers) le mefuta e bonolo ea TPU.
Ho khetha ka hloko thepa e bonolo le karolelano eo e kopantsoeng le TPU ho ka thusa ho fihlela boemo bo lakatsehang ba phokotso ea thatafalo.
2. Mokhoa o Mocha: Ho Kopanya Likaroloana tsa TPU le Si-TPV e Ncha ea Thepa e Bonolo
Ka ho kopanya di-granule tsa TPU tsa 85A le SILIKE e qadileng e bonolo ya Material Si-TPV (dynamic vulcanizate thermoplastic Silicone-based elastomer), Mokhoa ona o fihlella tekano e lakatsehang pakeng tsa phokotso ya thatafalo le ho hanyetsa ho kgohlahala ho hoholo, ntle le ho beha dibopeho tse ding tse lakatsehang tsa wona.
Mokhoa oa ho fokotsa ho thatafala ha likaroloana tsa TPU, Foromo le Tlhahlobo:
Ho eketsoa ha 20% Si-TPV ho Thatafalo ea 85A TPU ho fokotsa thatafalo ho 79.2A
Hlokomela:Lintlha tsa liteko tse kaholimo ke lintlha tsa rona tsa liteko tse sebetsang tsa laboratori, 'me li ke ke tsa utloisisoa e le boitlamo ba sehlahisoa sena, moreki o lokela ho hlahlojoa ho latela lintlha tsa hae tse ikhethang.
Leha ho le jwalo, ho etsa diteko ka dikarolwana tse fapaneng tsa ho kopanya ho tlwaelehile, ka sepheo sa ho fihlella motswako o motle wa bonolo le ho hanyetsa ho kgohlahala.
3. Ho kenyelletsa Li-Filler tse Hanelang ho Abrasion
Ho ntlafatsa ho hanyetsa ho kgohlopa, ditsebi di kgothaletsa ho kenyelletsa di-filler tse itseng tse kang carbon black, di-fiber tsa khalase, silicone masterbatch, kapa silicon dioxide. Di-Filler tsena di ka matlafatsa thepa ya TPU ya ho hanyetsa ho tsofala.
Leha ho le jwalo, ho lokela ho elwa hloko bongata le ho hasana ha di-filler tsena, kaha bongata bo feteletseng bo ka ama ho tenyetseha ha thepa.
4. Lisebelisoa tsa polasetiki le lintho tse nolofatsang
Jwalo ka mokgwa wa ho fokotsa boima ba TPU, Bahlahisi ba TPU ba ka nna ba sebedisa di-plasticizer kapa di-agent tse nolofatsang. Ho bohlokwa ho kgetha plasticizer e loketseng e ka fokotsang boima ntle le ho beha kganyetso ya ho kgohlana kotsing. Di-plasticizer tse tlwaelehileng tse sebediswang le TPU di kenyeletsa dioctyl phthalate (DOP) le dioctyl adipate (DOA). Ho lokela ho elwa hloko ho netefatsa hore plasticizer e kgethilweng e tsamaisana le TPU mme ha e ame hampe thepa e meng e kang matla a ho kganna kapa kganyetso ya dikhemikhale. Ho feta moo, Tekanyo ya di-plasticizer e lokela ho laolwa ka hloko ho boloka botsitso bo lakatsehang.
5. Liparamitha tsa Extrusion le Tsamaiso tse Hlophisitsoeng hantle
Ho fetola diparamente tsa ho ntsha le ho sebetsana le tsona ke habohlokoa ho fihlelleng motsoako o lakatsehang wa ho fokotseha ha thatafalo le ho hanyetsa ho kgopama ho hoholo. Sena se kenyeletsa ho fetola diparamente tse kang mocheso, kgatello le sekgahla sa ho phodisa nakong ya ho ntsha.
Lithempereichara tse tlase tsa extrusion le ho pholisa ka hloko li ka lebisa ho TPU e bonolo ha ka nako e ts'oanang ho ntlafatsa ho hasana ha li-filler tse hanelang ho khoptjoa.
6. Mekhoa ea Kamora ho Sebetsa
Mekhoa ea ka mor'a ts'ebetso e kang ho annealing, ho otlolla, kapa esita le kalafo ea bokaholimo e ka eketsa ho hanyetsa ho khohlela ntle le ho beha boima kotsing.
Haholo-holo ho qhaqha ho ka ntlafatsa sebopeho sa kristale sa TPU, e leng se etsang hore e hanele ho tsofala le ho taboha habonolo.
Qetellong, ho fihlella tekano e bonolo ea ho fokotseha ha thata ea TPU le ho ntlafala ha khanyetso ea ho khohlela ke ts'ebetso e nang le mahlakore a mangata. Bahlahisi ba TPU ba ka sebelisa khetho ea thepa, ho kopanya, li-filler tse hanelang ho khohlela, li-plasticizer, Li-Agent tse Nolofatsang, le taolo e nepahetseng ea liparamente tsa ho ntša ho lokisa thepa ea thepa hore e lumellane le litlhoko tse ikhethang tsa ts'ebeliso e fanoeng.
Sena ke seo o se hlokang Foromo e Hlōlang e fokotsang ho Tiea ha Likaroloana tsa TPU le ho Ntlafatsa Khanyetso ea ho Abrasion!















