Polymide, nke niile - Onye guzobere na polymer ihe, kpaliri mmasị nke ọtụtụ nyocha ụlọ akwụkwọ nyocha, ụfọdụ ụlọ ọrụ amalitekwala ime - ihe nke polylidide anyị.
I. Nchịkọta
Dị ka ihe ndị injinịa pụrụ iche, a na-eji Polylimide na ụgbọ elu, aerosce, microsceciacrics, nanometer, kristal mmiri, laser na ubi ndị ọzọ. N'oge na-adịbeghị anya, mba na-edepụta nyocha, mmepe na itinye ya n'ọrụpollimideDị ka otu n'ime plastik injinịa na-ekwe nkwa na narị afọ nke 21. A matara Polymiptide, n'ihi njirimara ya pụrụ iche na arụmọrụ na njikọta, ma a makwaara ya nke ọma, ma na-ekweta na "enweghị teknụzụ ngwa ahịa ya, enweghị teknụzụ microElecrics taa.
Nke abụọ, arụmọrụ nke polyimide
1. Dabere na nyocha nke polymimatic zuru oke, ọnọdụ ndụ ya dị ihe dị ka 500 Celsius. Polymidide Synsedhized si Biphenylydydydydydydydydrd na p - phenylenedenine nwere okpomọkụ nke 600 Celsius C ma bụ otu n'ime polymers na-akwụsi ike karịa.
2. Polymimide nwere ike iguzogide oke okpomoku dị oke ala, dị ka mmiri na-ehi ehi helium na - 269 Celsius C, ọ gaghị abụ ọnya.
3.Pollimidenwere ihe ndị na-arụ ọrụ dị mma. Ike Tonsile nke plastik na-ezighi ezi dị n'elu 100MPA, ihe nkiri ahụ (KACOON) dị n'elu 170MPA, na Biphexyyylyyylyyylyyylyyylyylyylyyylyylyylyylyyylyylyylyylyylyylyylyylyylyylyylylyyl (na-eme ka ọ bụrụ 400MPA) ruo 400MPA. Dị ka plastini injinịa, ego nke ihe nkiri na-agbanwe agbanwe na-abụkarị 3 - 4GPA, na eriri ahụ nwere ike iru 200GBPA. Dabere na usoro usoro ihe omume, eriri ọla kọmpydride na p - phenylenedestine nwere ike iru 500GPA, nke abụọ na carbon fiber.
4. Afọdụ ụdị polymimide na-enweghị ntụpọ na sonvaction sovents na kwụsie ike iji nwayọọ acid. General iche anaghị eguzogide na hydrolysis. Na-adịghị ike na-eme ka polyimide dị iche iche na elu ndị ọzọ - polymers. Esemokwu ahụ bụ na akụrụngwa nke alkaline nwere ike weghachite ya. Dịka ọmụmaatụ, maka ihe nkiri KAPON, ọnụego mgbake nwere ike iru 80% - 90%. Inggbanwe ihe owuwu nwekwara ike inweta hydrolysis - iche, ụdị na-eguzogide afọ 120 Celsius C, awa 500 nke esi.
5. Ndị na-agbasa ọkụ nke polyimide bụ 2 × 10 - 5 ℃, Bọngcheng nwere ike iru 10 - 6 ℃, iche nwere ike iru 10 - 7 Celsius C.
6. Polymide nwere nguzo elu radieshon dị elu, ihe nkiri ya nwere ike njigide nke 90% mgbe 5 × 109rad ngwa ngwa eletrik.
7.Pollimidenwere ihe dị mma dielecticric, ya na dielectric mgbe niile dị ihe dị ka 3.4. Site na iwebata fluorine ma ọ bụ chụsa ikuku nanometers na Polylimide, enwere ike belata ihe dị ka 2.5. Nnweta Dieleccric bụ 10 - 3, ike dielectric dị 100 - 300KV / MM, Guangcheng bụ 300kv / mm, nguzosi ike nke 1000kv / 1017ω / cm. Ngwongwo ndị a na-anọgide na ọkwa dị elu karịa oke okpomọkụ na nsochi oge.
8. Polylimide bụ Onwe Gị - Na-ehichapu polymen nwere ọnụego dị ala.
9. Polymidide nwere obere ihe na-enweghị atụ n'okpuru nnukwu oghere.
10. Enwere ike iji Poolymide bụ ihe na-adịghị mma, nke na-egbu egbu, na-eme ka tebụl na ngwa ahụike, ma nwee ike iguzogide ọtụtụ puku nsí. Fọdụ polymimides nwekwara ezigbo biocompatibilitibilitibilitibilitibilitibity, ha abụghị ndị na-adịghị mkpa na nnwale ọbara na nke na-enweghị atụ na ule vitro cytotoxicity.
3. Ọtụtụ ụzọ usoro:
E nwere ọtụtụ ụdị na ụdị polimidide, ma enwere ọtụtụ ụzọ iji sikọọ ya, yabụ enwere ike ịhọrọ ya dabere na ebumnuche ngwa dị iche iche. Sudị mgbanwe a na njikọta njikọ siri ike maka polymers ndị ọzọ inweta.
1.Pollimidebụ ọkachasị site na dibasic anibasic anwụrụ na ọkara. A na-ejikọtara polymers abụọ ndị ọzọ na ọtụtụ polymidic ndị ọzọ hetetecyclidic, nke polybenmidazole, polybenzidazole, polyquidine tụnyere ndị monomenzole, polyquinenonezole, polyquine na-esite na akụrụngwa dị oke mma. Enwere ọtụtụ ụdị dianhydrades na diamin, na polymimis nwere ike ịnweta ihe dị iche iche site na njikọta dị iche iche.
2. Polymidide nwere ike ịbụ polycondes na obere okpomọkụ site na dianhydride na diamwddrd acid, ka ọ bụrụ DMF, iji nweta ihe dị ka 300 Celsius C maka akpịrị na Cyclimiza; A na-etinyekarị acetic anhydride na akwụkwọ nri polyamic maka kemịkal akpịrị na-egbu egbu na cyclization iji nweta ngwọta pollimide na ntụ ntụ. Dianine na Diahydrad na-ekpo ọkụ na polyconsed na nnukwu isi ihe na-agba mbọ, dị ka onye na-agba mbọ phenolic, iji nweta pollimid n'otu usoro. Na mgbakwunye, pollimide nwekwara ike ịnweta site na mmeghachi omume nke Ester na Onenene; Enwere ike ịgbanwe ya na acid polilimiimide mbụ, mgbe ahụkwa na Polylimide. Zọ ndị a niile na-eme ka mma na nhazi. A na-akpọ onye bụbu PMR, nke nwere ike nweta viscosity dị ala, nwere nnukwu ihe ngwọta na obere viscosity n'oge nrụpụta, nke kwesịrị ekwesị maka imepụta ihe ndị mejupụtara; Nke ikpeazụ na-abawanye iji meziwanye solubity, a na-ewepụta obere ihe molecular n'oge ntụgharị.
3. Ọ bụrụhaala na ịdị ọcha nke dianhydride (ma ọ bụ Tetracid) na diampped, ma ọ bụ dị mfe iji nweta ogo nke ọma site na ịgbakwunye otu ahydride ma ọ bụ otu amine.
4. Polycondens nke dintihydride (ma ọ bụ Tetracid) na diam, ọ bụrụhaala na oke ikuku na-erute oke mmiri, na-eme ka nhazi na ntụ ntụ na-etolite. Bịa kwesị.
5. Ọ dị mfe iwebata otu ụzọ na nsọtụ ma ọ bụ yinye ya na Oligomers na-arụsi ọrụ ike, si otú ahụ nweta thermoseting Polyimide.
6. Jiri otu carboxyl na Polymimide iji mepụta ekike ma ọ bụ usoro nnu, ma nwee ike iji otu foto ma ọ bụ iji nkwadebe nke fim lb.
7. Usoro izugbe nke polyimiging anaghị emepụta nnu na-enweghị nnu, nke bara uru nke ukwuu maka ịkwadebe ihe.
8pollimideIhe nkiri na ọrụ ọrụ, ọkachasị ngwaọrụ na-enweghị eriri, site na nkwụnye ugwu.
Oge Post: Feb - 06 - 2023