Isingeniso kumapharamitha okumelana ne-Hydrolysis wezinto ze-TPU

Ukumelana ne-hydrolysis ye-TPUibhekisela ekhonweni layo lokumelana “nokuhlaselwa” umswakama nokuvimbela ukuwohloka kokusebenza. Leli khono linqunywa isakhiwo samakhemikhali kanye nezithasiselo ze-TPU, futhi liyisibonakaliso esiyinhloko sokuhlola ukuthembeka kwayo kwesikhathi eside ezindaweni ezinomswakama noma ezingaphansi kwamanzi.

Isici Esinqumayo: Okusekelwe ku-polyester vs.I-TPU esekelwe ku-Polyether

Umehluko oyisisekelo ekuphikisweni kwe-hydrolysis uvela esakhiweni "sengxenye ethambile" ngaphakathi kweketanga lama-molecule.

• I-TPU esekelwe ku-polyester: Izibopho ze-ester ku-molecule chain zisengozini yokuqothulwa yi-hydrolysis, okuholela ekuwohlokeni okukhulu kokusebenza ezindaweni ezishisayo nezinomswakama. Ngakho-ke, inokumelana okuncane kwe-hydrolysis ngokwemvelo.
• I-TPU esekelwe ku-Polyether: Izibopho ze-ether ku-molecule chain zizinzile futhi ziyamelana ne-hydrolysis, zinikeza ukumelana okuhle kakhulu kwe-hydrolysis. Lokhu kwenza kube ukukhetha okuthandwayo kwezicelo ezingaphansi kwamanzi noma ezinomswakama ophezulu.

Ngamafuphi: Ezinhlelweni ezidinga ukuthintana isikhathi eside namanzi noma izindawo ezinomswakama, i-TPU esekelwe ku-polyether kufanele ibekwe phambili.

Izinkomba Zokuhlola Okuyinhloko

Ukumelana ne-hydrolysis kuvame ukuhlolwa ngokuhlolwa kokuguga okusheshayo, kugxilwe kulezi zinhlaka ezilandelayo ezibalulekile:

• Izinga Lokugcinwa Kwamandla Okudonswa: Iphesenti lamandla okudonswa agcinwa ngemva kokuguga uma kuqhathaniswa nenani lokuqala. Ukugcinwa okuphezulu kubonisa ukumelana okungcono kwe-hydrolysis; imboni ngokuvamile idinga ≥80%.
• Ushintsho Ekunwebeni Ngesikhathi Sokuphumula: Kulinganisa ushintsho ekuguquguqukeni kwezinto. Izinguquko ezincane zibonisa ukusebenza okuzinzile kakhudlwana.
• Ushintsho Ekuqineni: Kubonisa izinguquko ekuqineni kobuso. Izinguquko ezincane zibonisa ukuzinza okungcono kwezinto eziningi.
• Ukubukeka Okubonakalayo: Bheka ukuthi ubuso besampula bubonisa yini izimpawu zokuwohloka njengokuqhekeka, ukuqhuma, noma ukushoba.

Izindlela Zokuhlola Namazinga

Ukumelana ne-hydrolysis kuhlolwa ngokuhlolwa kokuguga okusheshayo. Izindinganiso eziyinhloko zifaka:

• I-ISO 4611: Izinga lomhlaba wonke lokuguga kwepulasitiki.
• I-ASTM D570: Indlela yokuhlola ejwayelekile yokumunca amanzi epulasitiki.
• I-DIN 53366: Isetshenziselwa ukuhlukanisa ukuzinza kwe-hydrolysis yezinto.

Izimo zokuhlola ezijwayelekile zingama-70°C / 95% Umswakama Ohlobene (RH) amahora angamakhulu kuya ezinkulungwaneni, kanye nokuthatha amasampula njalo ukuze kuqashwe izinguquko zokusebenza.

Izindlela Zokuthuthukisa Ukumelana Ne-Hydrolysis

Uma ukumelana kwe-hydrolysis kwe-TPU esekelwe ku-polyester kunganele, izindlela ezilandelayo zingasetshenziswa:

1. Engeza Iziqinisi Ze-Hydrolysis: Enye yezindlela eziphumelela kakhulu ukufaka i-polycarbodiimide (PCD) noma ezinye izinto ezilwa ne-hydrolysis. Lezi "zilungisa" amaketanga ama-molecule aphukile futhi zilibazise ukuwohloka.
2. Lungiselela Ukwakheka Kwama-Molecular: Ukukhetha ama-polyester polyol anesisindo esiphezulu sama-molecule, amaketanga amade, noma izakhiwo ezinamagatsha nakho kungathuthukisa ukuzinza kwe-hydrolysis ngezinga elithile.

Isifinyezo kanye nezincomo zokukhetha

• Ukukhetha Okubalulekile: Ezindaweni ezinomswakama, beka phambili i-TPU esekelwe ku-polyether.
• Isisekelo Sokuhlola: Hlola ngokwezibalo amazinga ahlukene e-TPU ngokuqhathanisa amazinga okugcinwa kwamandla okudonsa kanye neminye imininingwane evela ekuhlolweni kokuguga.
• Ibhalansi Ibalulekile: Qaphela ukuthi i-TPU esekelwe ku-polyether ingaba namandla omshini aphansi kancane kanye nokumelana nokushisa uma kuqhathaniswa namazinga asekelwe ku-polyester. Ibhalansi phakathi kokumelana ne-hydrolysis kanye nezakhiwo zomshini kumele ifinyelelwe.

Ukuqonda la mapharamitha kuzokusiza ukuthi ukhethe izinto ze-TPU ezifanele zomkhiqizo wakho, okuqinisekisa ukuthembeka kwesikhathi eside endaweni yawo eqondiwe.

MayelanaI-Yantai Linghua New Material Co., Ltd.

I-Yantai Linghua New Material Co., Ltd. inamakhono ocwaningo nokuthuthukiswa okuqinile kanye nokukhiqiza emkhakheni we-TPU esekelwe ku-polyether. Njengomhlinzeki we-TPU ochwepheshe, owasungulwa ngo-2010, inkampani ikhule yaba yibhizinisi eligcwele imboni elihlanganisa ukuhweba ngezinto zokusetshenziswa, ucwaningo nokuthuthukiswa kwezinto, kanye nokukhiqiza nokuthengisa.

Imikhiqizo yayo ye-TPU esekelwe ku-polyether, esekelwe kwisakhiwo se-ether bond ku-molecule chain, inikeza izinto ukumelana okuhle kakhulu kwe-hydrolysis, ukusebenza okuphezulu kokushisa okuphansi (kuze kufike ku--40°C nangaphansi), kanye nokumelana okuvelele kwe-mildew. Ngaphezu kwalokho, imikhiqizo inamandla aphezulu okusebenza, ukumelana okuhle kokuhuzuka, kanye nokucutshungulwa okuhle kakhulu, ngenkathi ihambisana nezidingo zekhwalithi zomhlaba wonke kufaka phakathi i-REACH, i-RoHS, kanye ne-FDA. Isebenzisa lezi zakhiwo, imikhiqizo ye-polyether TPU ye-Linghua New Materials isetshenziswa kabanzi ku-wire kanye nekhebula, izingxenye zezimoto, amapayipi omlilo, amashubhu namapayipi, kanye nezicathulo - izinhlelo zokusebenza zezimboni kanye nabathengi ezifuna ukumelana nesimo sezulu okuphezulu kanye nokuzinza kwesikhathi eside.