Njirimara na ngwa nke polyimide (PI)

November 04, 2024

Polymide (Polimide, ndebiri dị ka PI) na-ezo aka na klas nke nwere ihe na - eme ihe nkiri (-co-NR-co-) na arụmọrụ kachasị mma nke ihe ọ bụla. Ọnọdụ okpomọkụ ya dị elu karịa 400 Celsius C, ogologo oge iji ọnọdụ okpomoku -200 ~ 103 hz dielectric na-egbu egbu 4.0, dielectric mfu naanị 0.004 ~ 0.007, bụ f na mkpuchi nke H Class.

Plastic plastik hony na-eguzosi ike na plastik (pollimide, mpempe akwụkwọ, igwe na-arụ ọrụ nke 220 ℃, 260 ℃, 300 ℃, 350 ℃ na elu n'otu n'otu. Enwere ike iji mkpụrụ ndụ polyBidim nwere ike ịmị mkpụrụ, polyte, polytetricluethylene, wdg, nke nwere ike ịgbanwe ike nke ihe onwunwe na ihe ndị na-eguzogide ihe na-eguzogide ya.

Polyimide PI nwere oke ọnọdụ okpomoku (-269 ~ 400 ℃), ike na-eguzogide, oke na-agbanwe agbanwe, na-eguzogide ihe mgbochi , anaghị egbu egbu, wdg pị akụkụ nke ụdị ọrụ ogologo oge nke ihe karịrị 350 ℃, pịpụ aka na-adị ugbu a na ọnọdụ okpomọkụ dị mma, na arụmọrụ ya zuru oke bụ nke plastik ndị ọzọ pụrụ iche. Ọdịmma ya na-enweghị atụ na ndị ọzọ pụrụ iche.

Polymimes dị iche iche nke Polymities na-akụzi, Atharide Athydride Polymide, polimide na Polylidide Anhylide Polylidide. N'etiti ha, Homopomide Polymidise bụ onye nnọchi anya Polycondens Polymimide. Agbanyeghị, ọ bụ insoluble na nke tara akpụ, ma sie ike hazie ya. A na - enwekarị ike iji naanị usoro metallurgy porllurgy site na ịkpụ ntụ ntụ ntụ ntụ, ma ọ bụ iji implegnation ma ọ bụ nkedo n'ime ihe nkiri. Iji maa atụ, iko iko na-etinye na acid polyyamide acid na-ekpo ọkụ iji mepụta akwa. N'ụzọ dị iche, ụdị aniseddydride ụdị polymimide dị ka pollimide na-enweghị mmerụ, ịkpụzi arụmọrụ akawo mma. Ọ gaghị enwe ike ịhazi nhazi, kamakwa site na nsị ahụ, ewepụta ụzọ ndị ọzọ ịkpụ, nwekwara ike ịbụ usoro ihe nkiri dị mma.

Nke nkewasi

Polycondens

A na-emepụta polymimes ụdị nke polymimis site na imeghachi dị egwu dị egwu na aromatic dandydration, tetromatic tocsylic acid, ma ọ bụ tetracarboxylic Acid Acidyl. Ebe ọ bụ na njikọta nke polyconsed polycondes na-rụrụ na oke mmiri na-abụghị Southyyyyrrolidone, N-Methyyyrrolidone, Nkwụsị Polimide A na-esikarị ike na-enweghị isi ike N'oge nkwadebe prepreg, ma enwere ọgbara elu ewepụtara n'oge Cyclization nke polyamọs, nke na-adị mfe pores na ngwaahịa ndị mejupụtara. Nke a na - eme ka ọ dị mfe iwepụta pores na ngwaahịa ndị mejupụtara, ọ na - esi ike inweta ihe ndị mejupụtara na - enweghị pores. Ya mere, a na-ejikarị polimimide polycondens dị ka matriks resin nke ihe mejupụtara ihe, ọkachasị eji emepụta fillimide fim na mkpuchi.

Posmerization

Dika polycondens Polymimide nwere ọghọm ndị a kpọtụrụ aha n'elu, iji merie adịghị ike ndị a, amalitela polymimization polymerization. Ndị bụ isi ndị a na-ejikarị ebe niile bụ polybismaleidimide na njedebe nke polymimides. Ọtụtụ mgbe, resins ndị a bụ oke molecular dị ala nke nwere òtù na-enweghị atụ na nsọtụ, wee tinye aka na polymerized site na otu na-enweghị atụ.

(1) polybismatomide

Polybismaleimidide bụ polyconsenstation nke nwoke Ahydride na Odide Aromatic. E ji ya tụnyere Polylimide, arụmọrụ adịghị mma, mana usoro njikọ dị mfe, nhazi post, nhazi, enwere ike ịme ka ọ dị mfe ngwaahịa ngwaahịa dị iche iche. Ma ihe a cedded na-emebi emebi.

(2) BOCTMingerene-Dabere na Counpy Polins Rins

Otu n'ime ihe kachasị mkpa bụ klaasị nke polymerization nke ndị na-emeghachi omume, monomer na polymization) ụdị polymidide resins nke ụlọ nyocha nke Nasa Lewis malitere. PMR-ụdị polymide polymitive bụ ngwakọta nke acracyylic Acid Accylyl Accyl, Dicaryyl Acid Acid, Ngwunye Acdayylic Acid, 3-Diviacyyl Acid na 5-ọblenene-2, 3-dicarboxy monowl Esta. Acid 3-Dicarboxylic Acid dị ka Acyl Esstacy Tetracarxylic acid, na methanol ma ọ bụ ethanol ma ọ bụ ethanol) iji mepụta ihe ga-eme A ga-eji eriri dị iche iche.

Subcluses

Enwere ike kee polymimes ụzọ anọ: homophenylenene pinyere, soluble pi, polilide-mo (pai) na pollaimimide (pei).

N'ihe banyere mgbanwe, pollimide nwere ọtụtụ ụzọ dị iche iche. Site na nkwalite nke ngbanwe, eriri iko, eriri eriri, igwe carbon na a ga-agbakwunye ọla. Nke a ga - ewepụ ike nke oke polymimide nke likear, ka mma ike ya, ebe belata ọnụ ahịa. Dịka ọmụmaatụ, na imepụta ihe eji eme ihe eji arụ ọrụ dị elu, mgbe nkwalite nke polilimide ahụ gbanwetụrụ nwere ike iguzogide ibu.

Ngbanwe na-agbanwe agbanwe, na aka nke ọzọ, na-eji ntụpọ inoorganic, eserese, polytetrafoorooroethylene dị ka fonteryylene dị ka ndị na-ebelata ma na-ebelata ụgwọ. Goldling Gold bụkwa usoro mgbanwe dị mkpa, pollimide nwere ike ịbụ njikọta epoxy resins, polytetrane kewaylene na polytetrallulloorooroorooroorooroorooroorooroorooroorooroene na polene, iji mepụta ihe na arụmọrụ kachasị mma.

Emume ngosi

1, ihe niile - polyMatic na-enyocha site na nyocha nke polmogravimetric, mbido mmalite nke okpomọkụ ya dị n'ozuzu ya na 500 ℃. Polymide Synhophthalic acid dị na P-Prenylenenine, ihe mgbochi ikuku nke 600 ℃, dị oke mma nke polymers nwere ike nkwụsi ike nke ụdị.

2, Polymidide nwere ike iguzogide oke okpomoku, dika -269 ℃ na helium mmiri helium agaghị enwe ike.

3, Polymidise nwere ihe ndị na - arụ ọrụ dị mma, ike Tensillow na - ezighi ezi karịa 100mpa, homolaide ụdị ihe karịrị 170MPA, Thermoplastic Polidication Polimide (TPI) ike dị ka 261KJ / M2. na biphenyylene-ụdị polymimide (elux s) ruru 400MPA. dị ka plastik. Modulus nke adilastic na-abụkarị 3-4GB, eriri ahụ nwere ike iru 200GBPA, dị ka eriri usoro, Benzeneunestine eriri na p-phenylenestine eriri ruru 500GPA, nke abụọ na carbon fiber.

4, ụfọdụ ụdị polymimide innosuble na sonvic na-edozi, iji ihe nkwụsi ike, nke a adịghị ka na-eguzogide ọgwụ nke Polylimise dị iche iche na polymers ndị ọzọ dị elu, akụkụ dị ukwuu, Nke ahụ bụ, enwere ike iji hydrolysis nwere ike iji weghachi akụrụngwa, dị ka Diahydride na Ominine, dịka maka ihe nkiri Kapton, ọnụego mgbake nke ruru 80% -90%. Gbanwee ihe owuwu nwekwara ike iguzogide oke ntuli aka na nkpuru hydrolysis, dika iguzogide 120 ℃, awa 500 nke esi.

5, Polymimide nwere ụdị ndọpụ uche zuru oke, dị ka ihe owuwu nke dị iche iche, dịka Tetrahydfurm, chloroform na methanol na methanol.

6, onu ogugu nke polymid nke polymimide na 2 × 10-5-3 10-5-5 / ℃, biphenylyyyyyyl dị 10-6 / otu iche ruo 10-6 7 / ℃.

7, Polymidise nwere nguzogide nke irrodiation, ihe nkiri ya na 5 × 109rad ngwa ngwa nke 90%.

8, Polymimide nwere ezigbo ihe diEkelecric, dielectric mgbe niile nke 3.4 ma ọ bụ karịa, ntinye nke fluorine, ọ ga-ebelata ihe dị ka 2.5. Ndapụ Dielectric ọnwụ nke 10-3, ike dielectric nke 100-300kv / mm, ngụgide nke 1017. Ngwongwo ndị a n'ọtụtụ okpomọkụ na oke oge a ga-ejigide na ọkwa dị elu.

9, Polymidide bụ onye na-eme polmer na-eme ka polymer, ọnụego nke dị ala.

12, polymidide na nnukwu oghere dị oke ala n'okpuru enweghị atụ.

A na-eji ọgwụ pollic na-egbu egbu, iji mepụta tebụl na akụrụngwa ọgwụ, na iguzogide ọtụtụ puku ugboro. Fọdụ Polymide nwekwara ezigbo biocompatibilitibilitibility, dịka ọmụmaatụ, na nnwale ọbara maka ndị na-abụghị ihere, na nnwale vitro cytotoxicity maka ndị na-anaghị egbu egbu.