Ifomyula yekhemikhali yi--OCH2-CH2OCOC6H4CO- Igama lesiNgesi: i-polyethylene terephthalate, elifinyeziweyo njenge-PET, yi-polymer ephezulu, ephuma kwi-ethylene terephthalate xa inyibilika emanzini. I-ethylene terephthalate ifunyanwa yi-esterification reaction ye-terephthalic acid kunye ne-ethylene glycol. I-PET yi-polymer emhlophe okanye etyheli ekhanyayo, enekristale ephezulu enomphezulu ogudileyo nokhazimlayo. Ineempawu zomzimba nezemishini ezibalaseleyo kuluhlu olubanzi lobushushu. Ubushushu bokusetyenziswa ixesha elide bunokufikelela kwi-120°C. Ubushushu bombane bulungile kakhulu. Nokuba kubushushu obuphezulu kunye nobuninzi obuphezulu, iimpawu zayo zombane ziselungile, kodwa ukumelana ne-corona kuphantsi. Ukumelana nokukrwitshwa, ukumelana nokudinwa, ukumelana nokungqubana, kunye nokuzinza kobukhulu konke kulungile kakhulu.
inzuzo
1, ineempawu ezilungileyo zoomatshini, amandla okuchaphazeleka aphindwe kathathu ukuya kahlanu kunamanye amafilimu, kwaye ukumelana nokugoba kulungile.
2, ukumelana neoyile, amafutha, i-asidi encitshisiweyo, i-alkali encitshisiweyo, kunye nezinyibilikisi ezininzi.
3, inokumelana okuhle kakhulu nobushushu obuphezulu nobuphantsi. Ingasetyenziswa ixesha elide kubushushu obuyi-120℃, kwaye inokumelana nobushushu obuphezulu obuyi-150℃ kunye nobushushu obuphantsi obuyi--70℃ xa isetyenziswa ixesha elifutshane, kwaye iimpawu zoomatshini zobushushu obuphezulu nobuphantsi azinampembelelo ingako.
4, ukungena kwegesi nomphunga wamanzi kuphantsi, oko kukuthi, inokumelana okuhle kakhulu negesi, amanzi, ioyile kunye nevumba.
5, ukukhanya okuphezulu, inokuthintela imisebe ye-ultraviolet, ikhanye kakuhle.
6, ayinabungozi, ayinancasa, icocekile kwaye ikhuselekile, ingasetyenziselwa ngqo ukupakisha ukutya.
I-PET yipolymer emhlophe okanye etyheli ekhanyayo enekristale eninzi enomphezulu ogudileyo nokhazimlayo. Ukumelana okuhle nokuqhekeka, ukumelana nokudinwa, ukumelana nokungqubana kunye nokuzinza okulinganayo, ukurhawuzelelwa okuphantsi kunye nobunzima obuphezulu, kunye nokuqina okukhulu phakathi kwezinto ze-thermoplastic: ubushushu obuhle bombane, impembelelo ephantsi kubushushu, kodwa ukumelana okubi kwe-corona. Ubushushu, ukumelana nemozulu, ukuzinza okuhle kokuxhathisa iikhemikhali, ukufunxwa kwamanzi okuphantsi, ukumelana nee-acids ezibuthathaka kunye nezinyibilikisi ze-organic, kodwa azifakwanga emanzini ashushu kunye ne-alkali. I-PET resin inobushushu obuphezulu bokutshintsha kweglasi, isantya esicothayo sekristale, umjikelo omde wokubumba, umjikelo omde wokubumba, ukuncitshiswa okukhulu kokubumba, ukuzinza okuphantsi kobukhulu, ukubuthathaka kokubumba kwekristale, kunye nokumelana okuphantsi kobushushu. Ngokuphucuka kwe-arhente ye-nucleating, i-arhente ye-crystallization kunye nokuqinisa ifayibha yeglasi, i-PET ineempawu ezilandelayo ukongeza kwiipropati ze-PBT:
1, ubushushu obutshintsha ubushushu kunye nobushushu obusetyenziswa ixesha elide zezona ziphezulu phakathi kwezinto ezisetyenziswa ngokubanzi ze-thermoplastic.
2, ngenxa yokumelana kwayo nobushushu obuphezulu, i-PET eqinisiweyo ifakwa kwibhafu ye-solder kwi-250°C imizuzwana eli-10, kwaye phantse ayitshintshi umbala. Ifanelekile ngokukodwa ekulungiseleleni iindawo ze-elektroniki kunye nezombane ezifakwe i-solder.
3, amandla okugoba yi-200Mpa, i-elastic modulus yi-4000Mpa, ukumelana nokuqhekeka nokudinwa nako kulungile kakhulu, ubunzima bomphezulu buphezulu, kwaye iimpawu zoomatshini zifana neeplastiki ze-thermosetting.
4, ekubeni i-ethylene glycol esetyenziswa ekuvelisweni kwe-PET iphantse ibe sisiqingatha sexabiso le-butylene glycol esetyenziswa ekuvelisweni, i-PET resin kunye ne-PET eqinisiweyo zezona xabiso liphantsi phakathi kweplastiki zobunjineli kwaye zisebenza ngexabiso eliphezulu.