Njirimara ihe nkiri PI nke bọọdụ mica

1. Dị ka nyocha thermogravimetric si kwuo, okpomọkụ ndakpọ nke polyimide aromatic zuru oke bụ ihe dịka 500 ℃. The polyimide synthesized from biphenyl dianhydride na p-phenylenediamine nwere okpomọkụ ndakpọ ọkụ nke 600 ℃, nke bụ otu n’ime ụdị nkwụsi ike dị elu nke polymer ruo ugbu a.

2. Polyimide nwere ike iguzogide oke ikuku dị oke ala, dịka anaghị agbaji ma gbawaa na helium mmiri na -269 ° C.

3. Polyimide nwere ezigbo ihe eji arụ ọrụ. Ike nke plastik na -emebeghị emecha dị n’elu 100Mpa, ihe nkiri Kapton (Kapton) karịrị 170Mpa, na ụdị biphenyl polyimide (UpilexS) ruru 400Mpa. Dịka plastik injinịa, ọnụọgụ ihe nkiri na-agbanwe na-abụkarị 3-4 Gpa, eriri nwere ike iru 200 Gpa. Dika mgbako usoro iwu siri dị, eriri nke phthalic anhydride na p-phenylenediamine mebere nwere ike iru 500 Gpa, nke abụọ bụ naanị eriri carbon.

4. Ụfọdụ ụdị polyimide anaghị agbaze na ihe mgbaze anụ ahụ, kwụsiri ike itughari acid, na ụdị izugbe adịghị eguzogide hydrolysis. Ọrụ a yiri ka ọ na-emezighị emezi na-eme ka polyimide bụrụ nnukwu ihe dị iche na polymer ndị ọzọ nwere nnukwu arụmọrụ. Njirimara nke a bụ na akụrụngwa dianhydride na diamine nwere ike weghachite site na hydrolysis alkaline. Dịka ọmụmaatụ, maka ihe nkiri Kapton, ọnụego mgbake nwere ike iru 80%-90%. Ịgbanwe usoro ahụ nwekwara ike mepụta ụdị na -eguzogide hydrolysis, dị ka ndị nwere ike ịnagide esi na 120 Celsius maka awa 500.

5. The thermal mgbasa ọnụọgụ nke polyimide bụ 2 × 10-5-3 × 10-5 ° C, Guangcheng thermoplastic polyimide bụ 3 × 10-5 ° C, ụdị biphenyl nwere ike iru 10-6 ° C, na iche iche dị . Ruo 10-7 Celsius.

6. Polyimide nwere nguzogide radieshon dị elu, na njigide ike ihe nkiri ya bụ 90% mgbe 5 × 109rad irradiation ngwa ngwa.

7. Polyimide nwere ezigbo ihe ọkụ ọkụ dielectric. Igwe ọkụ dielectric bụ ihe dịka 3.4. Na -ewebata fluorine ma ọ bụ na -agbasasị nha nanometer ikuku na polyimide, enwere ike belata ọnụọgụ dielectric ruo ihe dịka 2.5. Ọnwụ dielectric bụ 10-3, na ike dielectric bụ 100-300KV/mm. A ka nwere ike dobe ihe ndị a n’ogo dị elu n’oke oke okpomọkụ na ugboro ugboro.