Polyetherimide, inodaidzwa kunzi PEI muChirungu, Polyetherimide, ine chitarisiko cheamber, imhando yeamorphous thermoplastic special engineering plastic iyo inounza inochinjika ether bond (- Rmae Omi R -) mune yakasimba polyimide refu cheni mamorekuru.
Chimiro chePEI
Serudzi rwe thermoplastic polyimide, PEI inogona kuvandudza zvakanyanya kushata kwe thermoplasticity uye kuoma kugadzirisa kwe polyimide nekuunza ether bond (- Rmurmurr R -) mu polymer main chain uku ichichengeta chimiro chemhete che polyimide.
Hunhu hwePEI
Zvakanakira:
High tensile simba, pamusoro pe110MPa.
Simba rekukotama rakakwirira, pamusoro pe150MPa.
Yakanakisa thermo-mechanical kutakura simba, tembiricha deformation yakakura kupfuura kana yakaenzana ne200 ℃.
Good creep resistance uye kuneta kuramba.
Yakanakisa murazvo retadancy uye utsi hwakaderera.
Yakanakisa dielectric uye insulation zvivakwa.
Yakanakisa dimensional kugadzikana, yakaderera coefficient yekuwedzera kwekupisa.
Kupisa kupisa kwakanyanya, kunogona kushandiswa pa170 ℃ kwenguva yakareba.
Inogona kupfuura nemu microwaves.
Zvakaipa:
Iine BPA (bisphenol A), iyo inomisa kushandiswa kwayo muzvigadzirwa zvine chekuita nevacheche.
Notch impact sensitivity.
Alkali resistance is general, kunyanya pasi pemamiriro ekupisa.
PEEK
PEEK sainzi zita polyether ether ketone imhando yepolymer iyo ine ketone bond uye maviri ether mabhondi mune huru cheni chimiro. Iyo yakakosha polymer zvinhu. PEEK ine chitarisiko che beige, yakanaka processability, kutsvedza uye kupfeka kuramba, kunaka kusimuka, kupikisa makemikari akanaka, kuramba kwakanaka kune hydrolysis uye superheated steam, kupisa kwekushisa kwemwaranzi, yakanyanya kupisa deformation tembiricha uye yakanaka mukati memoto retardancy.
PEEK yakatanga kushandiswa mumunda weaerospace kutsiva aluminium, titanium uye zvimwe zvinhu zvesimbi kugadzira mukati nekunze zvikamu zvendege. Nekuti PEEK ine akanakisa akazara zvivakwa, inogona kutsiva zvechinyakare zvinhu zvakaita sesimbi nemakeramiki mune akawanda akakosha minda. Kuramba kwayo kwekushisa kwakanyanya, kuzvizora, kusapfeka uye kuramba kuneta kunoita kuti ive imwe yeanonyanya kufarirwa einjiniya mapurasitiki.
Seye thermoplastic polymer zvinhu, hunhu hwePEI hwakafanana nehwePEEK, kana kunyange kutsiva kwePEEK. Ngatitarisei musiyano wezviviri izvi.
| PEI | PEEK | |
| Density (g/cm3) | 1.28 | 1.31 |
| Tensile Simba (MPa) | 127 | 116 |
| Flexural Strength (Mpa) | 164 | 175 |
| Kuomarara kweBhora (MPa) | 225 | 253 |
| GTT(Glasi-shanduko Temperature) (℃) | 216 | 150 |
| HDT (℃) | 220 | 340 |
| Kushanda Kwenguva Yakareba Tembiricha (℃) | 170 | 260 |
| Kuramba Kwakajeka Kwepamusoro (Ω) | 10 14 | 10 15 |
| UL94 Flame Retardant | V0 | V0 |
| Kutora Mvura (%) | 0.1 | 0.03 |
Kuenzaniswa nePEEK, kuita kwakazara kwePEI kunonyanya kubata maziso, uye mukana wayo mukuru uri mumutengo, chiri zvakare chikonzero chikuru nei zvimwe zvekugadzira ndege zvichisarudzwa nePEI inoumbwa zvinhu. Mari yakazara yezvikamu zvayo yakaderera pane iyo yesimbi, thermosetting composites uye PEEK composites. Izvo zvinofanirwa kucherechedzwa kuti kunyangwe mutengo wekuita kwePEI wakanyanya kukwirira, kupikisa kwayo kwekushisa hakuna kunyanya kukwira.
Mune zvinonyungudutsa zvine chlorine, kutsemuka kwepfungwa kunoitika nyore, uye kuramba kune organic solvents hakuna kunaka senge semi-crystalline polymer PEEK. Mukugadzirisa, kunyangwe kana PEI iine maitiro echinyakare thermoplastic engineering mapurasitiki, inoda yakanyanya kunyungudika tembiricha.
Nguva yekutumira: 03-03-23