Iyini i-Pyromellitic Dianhydride (PMDA)?

Iyini i-Pyromellitic Dianhydride (PMDA)?

I-Pyromellitic Dianhydride (PMDA) iyimpushana emhlophe, encibilika kwezinye izinyibilikisi zemvelo; i-hydrolyzes ku-asidi lapho ibhekene nomswakama. I-Pyromellitic Dianhydride (PMDA) iyi-anhydride ene-acidic engasetshenziswa njenge-ejenti yokulungisa futhi njenge-chain extender ekwakheni i-polyethylene terephthalate (PET) esekelwe izandiso zamaketanga. Isetshenziswa kakhulu ekukhiqizeni ama-thermoplastics nezinye izinhlelo zokusebenza zokumboza.

Iyini i -Pyromellitic Dianhydride esetshenziselwa?

I-Pyromellitic Dianhydride (PMDA) isetshenziswe kakhulu njenge-monomer ebalulekile ekulungiseni izinhlobonhlobo ze-thermoplastics njenge-polyester, ama-polycarbonates, ama-polyester polyethers, ama-plasticizersplasticizers, ama-expoxy resins, njll ukuzinza kwe-oxidative kanye nezakhiwo ezinhle kakhulu zemishini.

• okunamathelayo,

• ezinengilazi

• izimpushana zokubumba.

Njengemaphakathi, idlala indima ebalulekile ezintweni ezisekelwe ku-polyimide njengamabhodi esekethe aphrintiwe, i-tape automated bonding kanye ne-magnetic wire insulation.

Iyiphi indlela yokukhiqiza ye-Pyromellitic Dianhydride?

I-Pyromellitic Dianhydride ilungiswa nge-gas-phase oxidation ye-1,2,4,5-tetramethylbenzene (noma okuphuma kokunye okuhlobene ne-tetrasubstituted benzene). I-equation eyenziwe kahle yile:

C6H2(CH3)4 + 6 O2 → C6H2(C2O3)2 + 6 H2O

Elabhorethri, ingalungiswa ngokuphelelwa amanzi emzimbeni kwe-pyromellitic acid kusetshenziswa i-acetic anhydride.

Iyini i-solubility ye- Pyromellitic Dianhydride??

I-Pyromellitic Dianhydride inyibilika kalula otshwaleni futhi inyibilika kancane ku-ether nasemanzini.

Iyini ingozi ye-  Pyromellitic Dianhydride?？

I-Pyromellitic Dianhydride inobuthi futhi ingacasula amaphaphu, iso, i-mucosa yamakhala kanye nesikhumba, okubangela ukungezwani komzimba nokunye ukuphazamiseka.Indawo yokusebenza kufanele ibe nomoya omuhle, futhi opharetha kufanele bagqoke imaski yokuzivikela, izibuko zokuzivikela kanye nemishini yokuzivikela efanele.

Siyini isimo sokugcina sePyromellitic Dianhydride?

I-Pyromellitic Dianhydride  ivamise ukupakishwa kusigubhu sekhadibhodi esingama-25kg, sigcinwe endaweni epholile, engenamoya futhi eyomile, ukushisa, umswakama, i-sunscreen, kude nokushisa.

Ngingayithenga kuphi i-Pyromellitic Dianhydride ? Ingakanani intengo?

Kwa-Ao Zun, sithengisa i-Pyromellitic Dianhydride. Intengo yePyromellitic Dianhydride ivamise ukuhluka kuye ngenani lempahla eluhlaza. Ngentengo yakamuva, sicela usithinte futhi sizokunikeza ikhotheshini efanele izwe/isifunda sakho. Sithekelisa emhlabeni wonke, ukuze ukwazi ukusithinta ekhelini le-imeyili mandy@czqidi.com ukuze uthole isaphulelo samahhala, noma uthumele umlayezo ku-WhatsApp ukuze uthole impendulo esheshayo ethi +86-186-5121-5887.