Intshayelelo kwiiParameters zeHydrolysis Resistance zeTPU Materials

Ukumelana ne-hydrolysis ye-TPUibhekisa kubuchule bayo bokumelana "nohlaselo" ngokufuma kunye nokuthintela ukuwohloka kokusebenza. Olu buchule lumiselwa bulwakhiwo lweekhemikhali kunye nezongezo ze-TPU, kwaye luphawu oluphambili lokuvavanya ukuthembeka kwayo kwexesha elide kwiindawo ezifumileyo okanye ezingaphantsi kwamanzi.

Into Ebalulekileyo: Esekwe kwiPolyester vs.I-TPU esekwe kwiPolyether

Umahluko osisiseko ekuchaseni i-hydrolysis uvela kwisakhiwo "se-soft segment" ngaphakathi kwe-molecular chain.

• I-TPU esekelwe kwi-polyester: Iibhondi ze-ester kwi-molecular chain zichaphazeleka yi-hydrolysis, nto leyo ekhokelela ekuwohlokeni okukhulu kokusebenza kwiindawo ezishushu nezifumileyo. Ke ngoko, ayinayo i-hydrolysis exhathisayo.
• I-TPU esekelwe kwiPolyether: Iibhondi ze-ether kwi-molecular chain zizinzile kwaye ziyamelana ne-hydrolysis, nto leyo enika ukumelana okuhle kwe-hydrolysis. Oku kwenza ukuba ibe lolona khetho lukhethwayo kwiindawo ezingaphantsi kwamanzi okanye kwiindawo ezinomswakama ophezulu.

Ngamafutshane: Kwizicelo ezifuna ukunxibelelana ixesha elide namanzi okanye iindawo ezifumileyo, i-TPU esekelwe kwi-polyether kufuneka ibekwe phambili.

Iimpawu zoVavanyo oluPhambili

Ukumelana ne-hydrolysis kudla ngokuvavanywa ngovavanyo lokwaluphala olukhawulezileyo, olugxile kwezi parameter zilandelayo ziphambili:

• Izinga Lokugcinwa Kwamandla Okutsalwa: Ipesenti yamandla okutsalwa agcinwayo emva kokwaluphala xa kuthelekiswa nexabiso lokuqala. Ukugcinwa okuphezulu kubonisa ukumelana okungcono kwe-hydrolysis; ishishini lidla ngokufuna ≥80%.
• Utshintsho kubude ngexesha lokuphumla: Lulinganisa utshintsho kukuguquguquka kwezinto. Utshintsho oluncinci lubonisa ukusebenza okuzinzileyo ngakumbi.
• Utshintsho kuBulukhuni: Lubonakalisa utshintsho kubunzima bomphezulu. Utshintsho oluncinci lubonisa ukuzinza okungcono kwezinto ezisetyenziswayo.
• Inkangeleko Ebonakalayo: Jonga ukuba umphezulu wesampulu ubonisa iimpawu zokuwohloka okufana nokuqhekeka, ukudumba, okanye ukutshixa.

Iindlela zoVavanyo kunye neMigangatho

Ukumelana ne-hydrolysis kuvavanywa ngovavanyo lokwaluphala olukhawulezileyo. Imigangatho ephambili ibandakanya:

• I-ISO 4611: Umgangatho wamazwe ngamazwe wokuguga kweplastiki.
• I-ASTM D570: Indlela eqhelekileyo yokuvavanya ukufunxwa kwamanzi kweplastiki.
• I-DIN 53366: Isetyenziselwa ukwahlula uzinzo lwe-hydrolysis yezinto.

Iimeko zovavanyo eziqhelekileyo zii-70°C / 95% Relative Humidity (RH) kangangeeyure ezingamakhulu ukuya kumawaka, kunye neesampuli zamaxesha ngamaxesha ukujonga utshintsho lokusebenza.

Iindlela Zokuphucula Ukumelana neHydrolysis

Ukuba ukumelana ne-hydrolysis ye-TPU esekwe kwi-polyester akwanelanga, ezi ndlela zilandelayo zingasetyenziswa:

1. Yongeza ii-Hydrolysis Stabilizers: Enye yezona ndlela zisebenzayo kukongeza i-polycarbodiimide (PCD) okanye ezinye ii-anti-hydrolysis agents. Ezi "zilungisa" ii-molecular chains eziphukileyo kwaye zilibazise ukuwohloka.
2. Lungiselela ulwakhiwo lweMolekyuli: Ukukhetha iipolyester polyols ezinobunzima obuphezulu bemolekyuli, iitsheyini ezinde, okanye izakhiwo ezinamasebe nako kunokuphucula uzinzo lwe-hydrolysis ukuya kuthi ga kwinqanaba elithile.

Isishwankathelo kunye neengcebiso zokukhetha

• Ukhetho Oluphambili: Kwiindawo ezifumileyo, beka phambili iTPU esekelwe kwi-polyether.
• Isiseko soVavanyo: Vavanya ngokwezibalo amanqanaba ahlukeneyo e-TPU ngokuthelekisa amazinga okugcinwa kwamandla okutsalwa kunye nolunye ulwazi oluvela kuvavanyo lokwaluphala.
• Ukulinganisela kubalulekile: Qaphela ukuba i-TPU esekelwe kwi-polyether inokuba namandla oomatshini aphantsi kancinci kunye nokumelana nobushushu xa kuthelekiswa namanqanaba asekelwe kwi-polyester. Kufuneka kubekho ukulinganisela phakathi kokumelana ne-hydrolysis kunye neempawu zoomatshini.

Ukuqonda ezi parameters kuya kukunceda ukhethe izinto ezifanelekileyo zeTPU kwimveliso yakho, ukuqinisekisa ukuthembeka kwexesha elide kwindawo ekujoliswe kuyo.

MalungaYantai Linghua New Material Co., Ltd.

I-Yantai Linghua New Material Co., Ltd. inezakhono zophando nophuhliso eziqinileyo kwicandelo le-TPU esekelwe kwi-polyether. Njengomthengisi we-TPU oqeqeshiweyo, owasekwa ngo-2010, inkampani ikhule yaba lishishini elisebenza kushishino olupheleleyo elidibanisa urhwebo lwezinto eziluhlaza, uphando nophuhliso lwezinto, kunye nemveliso kunye nokuthengisa.

Iimveliso zayo ze-TPU ezisekwe kwi-polyether, ezisekelwe kwisakhiwo se-ether bond kwi-molecular chain, zinika izinto ukumelana ne-hydrolysis egqwesileyo, ukusebenza okuphezulu kobushushu obuphantsi (ukuya kuthi ga kwi--40°C nangaphantsi), kunye nokumelana okugqwesileyo ne-mildew. Ukongeza, iimveliso zinamandla aphezulu oomatshini, ukumelana nokukrala okuhle, kunye nokuqhubekeka kakuhle, ngelixa zithobela iimfuno zomgangatho wamazwe ngamazwe kubandakanya i-REACH, i-RoHS, kunye ne-FDA. Ukusebenzisa ezi mpawu, iimveliso ze-polyether ze-TPU ze-Linghua New Materials zisetyenziswa kakhulu kwiingcingo kunye neentambo, izinto zeemoto, iipayipi zomlilo, iityhubhu kunye neepayipi, kunye nezihlangu - izicelo zoshishino kunye nabathengi ezifuna ukumelana nemozulu ephezulu kunye nokuzinza kwexesha elide.