I-Polyetherimide, ekubhekiselwa kuyo njenge-PEI ngesiNgesi, i-Polyetherimide, enenkangeleko ye-amber, luhlobo lweplastiki yobunjineli ekhethekileyo ye-amorphous thermoplastic eyazisa ibhondi ye-ether eguquguqukayo (- Rmae Omi R -) kwi-polyimide eqinile yeemolekyuli zekhonkco elide.
Ubume be-PEI
Njengohlobo lwe-thermoplastic polyimide, i-PEI inokuphucula ngokubonakalayo i-thermoplasticity embi kunye nokulungiswa okunzima kwe-polyimide ngokuzisa ibhondi ye-ether (- Rmurmurr R -) kwikhonkco eliphambili le-polymer ngelixa igcina isakhiwo se-ring ye-polyimide.
Iimpawu zePEI
Izinto eziluncedo:
Amandla aphezulu, ngaphezulu kwe-110MPa.
Amandla okugoba aphezulu, ngaphezulu kwe-150MPa.
Umgangatho wokuthwala i-thermo-mechanical ogqwesileyo, iqondo lobushushu lokuguqula i-thermal lingaphezulu okanye lilingana ne-200 ℃.
Ukuxhathisa okulungileyo kokukhwela kunye nokumelana nokudinwa.
Ukubuyiswa komlilo okugqwesileyo kunye nomsi ophantsi.
Iipropati ezigqwesileyo ze-dielectric kunye ne-insulation.
Ukuzinza komgangatho ogqwesileyo, i-coefficient ephantsi yokwandiswa kwe-thermal.
Ukumelana nobushushu obuphezulu, kunokusetyenziswa kwi-170 ℃ ixesha elide.
Inokudlula kwii-microwaves.
Izinto ezingeloncedo:
Iqulethe i-BPA (i-bisphenol A), ethintela ukusetyenziswa kwayo kwiimveliso ezinxulumene neentsana.
Uvakalelo lwempembelelo yenotshi.
Ukuxhatshazwa kwe-alkali kuqhelekileyo, ngakumbi phantsi kweemeko zokufudumeza.
PEEK
I-PEEK yesayensi yegama le-polyether ether ketone luhlobo lwepolymer equlethe ibhondi enye ye-ketone kunye neebhondi ezimbini ze-ether kwisakhiwo esiphambili sekhonkco. Yimpahla ekhethekileyo yepolymer. I-PEEK inenkangeleko e-beige, i-processability elungileyo, ukutyibilika kunye nokunganyangeki, ukuxhathisa okulungileyo, ukuxhathisa okulungileyo kakhulu kweekhemikhali, ukuxhathisa okulungileyo kwi-hydrolysis kunye nomphunga ogqithisiweyo, ukushisa okuphezulu kwemitha, ubushushu obuphezulu be-thermal kunye nokubuyiswa komlilo wangaphakathi.
I-PEEK yaqala ukusetyenziswa kwintsimi ye-aerospace ukuze ithathe indawo ye-aluminiyam, i-titanium kunye nezinye izinto zetsimbi ukwenza iindawo zangaphakathi nangaphandle zenqwelomoya. Ngenxa yokuba i-PEEK ineepropati ezigqwesileyo ezibanzi, inokuthatha indawo yemathiriyeli yemveli njengesinyithi kunye neeseramikhi kwiindawo ezininzi ezikhethekileyo. Ukumelana nobushushu obuphezulu, ukuzithambisa, ukumelana nokunxiba kunye nokumelana nokudinwa kuyenza ibe yenye yeeplastiki zobunjineli ezisebenza kakhulu.
Njengesixhobo se-polymer thermoplastic, iimpawu ze-PEI zifana nezo ze-PEEK, okanye ukutshintshwa kwe-PEEK. Makhe sijonge umahluko phakathi kwezi zinto zimbini.
| I-PEI | PEEK | |
| Ubuninzi (g/cm3) | 1.28 | 1.31 |
| Amandla Okuqina (MPa) | 127 | 116 |
| Amandla e-Flexural (Mpa) | 164 | 175 |
| Ubunzima boBume beBhola (MPa) | 225 | 253 |
| I-GTT(Ubushushu beGlasi) (℃) | 216 | 150 |
| I-HDT (℃) | 220 | 340 |
| Ubushushu bokusebenza ixesha elide (℃) | 170 | 260 |
| Ukuxhathisa okuthe ngqo (Ω) | 10 14 | 10 15 |
| I-UL94 iRetardant yomlilo | V0 | V0 |
| Ukufunxwa kwamanzi (%) | 0.1 | 0.03 |
Xa kuthelekiswa ne-PEEK, ukusebenza okubanzi kwe-PEI kujonge ngakumbi, kwaye inzuzo yayo enkulu ixhomekeke kwiindleko, esona sizathu siphambili sokuba kutheni ezinye izinto zokuyila iinqwelomoya zikhethwe yi-PEI yezinto ezidibeneyo. Ixabiso elibanzi lamalungu ayo liphantsi kuneyentsimbi, i-thermosetting composite kunye ne-PEEK composite. Kufuneka kuqatshelwe ukuba nangona ukusebenza kweendleko ze-PEI kuphezulu, ukuchasana nokushisa akukona kakhulu.
Kwizinyibilikisi ezineklorini, ukuqhekeka koxinzelelo lwenzeka lula, kwaye ukuchasana nezinyibilikisi zendalo akulunganga njengaleyo ye-semi-crystalline polymer PEEK. Ekuqhubeni, nokuba i-PEI inokuqhubekeka kweeplastiki zobunjineli be-thermoplastic, ifuna ubushushu obuphezulu bokunyibilika.
Ixesha lokuposa: 03-03-23