Pyromellitic Dianhydride (PMDA)

Pyromellitic Dianhydride (PMDA) wani dianhydride mai kamshi ne mai saurin amsawa sosai wanda aka san shi azaman maɓalli mai mahimmanci a cikin samar da polymers na polyimide masu girma. Wannan fili mai jujjuyawar kwayoyin halitta yana fasalta ƙungiyoyin anhydride guda biyu waɗanda ke haɗe zuwa zoben benzene, suna ba da ingantaccen yanayin zafi, ƙarfin injina, da juriya na sinadarai.

Ƙididdiga na Fasaha

ABUBUWA	BAYANI
Tsafta	≥99.5%
Sauran acetone	≤1500ppm
Matsayin narkewa	286-287.5 ℃
Launi	Fari
Acid (PMA)	≤0.5%
Abun Najasa	≤0.5%
Girman Barbashi	≤150-600μm (≥90%)

Marufi da Ajiya

• 25kgs Paper Drum packaging, liyi tare da jakunkuna na PE, jakunkuna na bangon aluminum na waje yadudduka na marufi da aka rufe.

• Ajiye akwati sosai a rufe a cikin busasshen wuri kuma yana da isasshen iska.

Mabuɗin Abubuwan Pyromellitic Dianhydride (PMDA)

• Solubility: Mai narkewa a cikin magungunan polar kamar dimethyl sulfoxide (DMSO), dimethylformamide (DMF), da acetone; wanda ba a iya narkewa a cikin ether, chloroform, da benzene

• Yanayin Hygroscopic: da sauri yana ɗaukar danshi daga iska mai ɗanɗano, hydrolyzing zuwa cikin pyromellitic acid.

• Reactivity: Mai amsawa sosai akan narkewa, yana mai da shi manufa don polymerization da hanyoyin warkewa

• Ƙarfafawar thermal: Yana ba da damar kayan aiki tare da yanayin canjin gilashi mai girma (Tg har zuwa 300 ° C ko mafi girma a cikin tsarin da aka warke)

Aikace-aikace na farko na Pyromellitic Dianhydride (PMDA)

Pyromellitic Dianhydride (PMDA) yana da mahimmanci a cikin kera kayan haɓakawa saboda ikonsa na ba da juriya mai ƙarfi, jinkirin harshen wuta, da dorewa:

Polyimide Resins da Fina-finai: 

Core monomer don haɗa polyimides da aka yi amfani da su a cikin sassauƙan da'irori masu sassauƙa, abubuwan haɗin sararin samaniya, fina-finai masu rufewa, da na'urorin lantarki masu zafi.

Epoxy Resin Curing Agent: 

Yana aiki azaman hanyar haɗin kai da mai warkarwa don tsarin epoxy, haɓaka ƙarfin injina, juriya na sinadarai, da aikin thermal a cikin mannewa, sutura, abubuwan haɗaka, da kayan aikin lantarki.

Rubutun Mai Girma da Adhesives: 

Haɓaka kwanciyar hankali na oxidative da kaddarorin injina a cikin suturar kariya don aikace-aikacen masana'antu da kera motoci.

Thermoplastics da Plasticizers: 

An yi amfani da shi wajen samar da polyesters, polyethers, polycarbonates, da robobin injiniya tare da kyakkyawan jinkirin harshen wuta.

Sauran Amfani: 

Sarkar shimfiɗa a cikin polyethylene terephthalate (PET), wakili na matting a cikin foda, da stabilizer a cikin resins na musamman.

Waɗannan aikace-aikacen sun sa PMDA ya zama makawa a cikin masana'antu kamar sararin samaniya, lantarki, kera motoci, da microelectronics, inda kayan dole ne su yi tsayayya da matsanancin yanayin zafi da matsananciyar yanayi.

Tambayoyin da ake yawan yi (FAQs)

Tambaya: Menene babban amfanin PMDA?

A: An yi amfani da shi sosai a cikin fina-finai na polyimide don kayan lantarki da sararin samaniya, maganin epoxy don kayan aiki masu mahimmanci da sutura, kuma a matsayin wakili na crosslinking a cikin thermoplastics.

Tambaya: Shin PMDA hygroscopic ne?

A: Eh, PMDA cikin hanzari yana shan danshi daga iska kuma yana yin hydrolyzes zuwa pyromellitic acid. Koyaushe adana a cikin kwantena da aka rufe a cikin busassun yanayi.

Tambaya: Menene ma'anar narkewar PMDA?

A: Matsayin narkewa yana fitowa daga 284-288 ° C, yana ba da gudummawa ga babban kwanciyar hankali na thermal a aikace-aikace.

Tambaya: Yaya za a adana PMDA?

A: Ajiye a wuri mai sanyi, busasshiyar wuri a cikin rufaffiyar kwantena, kariya daga zafi da abubuwan da ba su dace ba.

Q: Wadanne abubuwan kaushi ne ke narkar da PMDA?

A: Yana da narkewa a cikin DMSO, DMF, da acetone amma ba a iya narkewa a cikin ether, chloroform, da benzene.

Tambaya: Shin PMDA ya dace da maganin resin epoxy?

A: Ee, yana aiki azaman wakili na warkewa mai inganci, sau da yawa yana buƙatar pre-rushewa a cikin acetone ko yaduwa mai kyau saboda babban wurin narkewa.

Tambaya: Wadanne masana'antu ne suka fi amfani da PMDA?

A: Aerospace (don fina-finai masu tsayayya da zafi), kayan lantarki (rubutu da da'irori), motoci (sassan zafi mai zafi), da sassan sutura / adhesives.

Tuntube Mu

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