Njira yopangira polymerization ya plasma mwachindunji

Njira yopangira polymerization ya plasma mwachindunji

Njira yogwiritsira ntchito polymerization ya Plasma ndi yosavuta pa zida zonse ziwiri zamkati mwa electrode polymerization ndi zida zakunja za electrode polymerization, koma kusankha magawo ndikofunikira kwambiri mu polymerization ya Plasma, chifukwa magawo amakhudza kwambiri kapangidwe ndi magwiridwe antchito a mafilimu a polymer panthawi ya polymerization ya Plasma.

Njira zogwirira ntchito za polymerization ya plasma mwachindunji ndi izi:

(1) Kutsuka ndi utsi wothira madzi

Chotsukira chakumbuyo cha polymerization pansi pa vacuum chiyenera kupopedwa kufika pa 1.3 × 10-1Pa. Pazochita za polymerization zomwe zimafuna zofunikira zapadera kuti zilamulire kuchuluka kwa mpweya kapena nayitrogeni, kufunikira kwa chotsukira chakumbuyo kumakhala kwakukulu kwambiri.

(2) Choyimira mphamvu yamagetsi kapena mpweya wosakanikirana wa mpweya wonyamula ndi choyimira mphamvu

Mlingo wa vacuum ndi 13-130Pa. Pa plasma polymerization yomwe imafuna ntchito, njira yoyenera yowongolera kuyenda kwa madzi ndi kuchuluka kwa madzi ziyenera kusankhidwa, nthawi zambiri 10.100mL/min. Mu plasma, mamolekyu a monomer amasinthidwa kukhala ayoni ndikulekanitsidwa ndi tinthu tamphamvu tomwe timaphulika, zomwe zimapangitsa kuti tinthu tamphamvu monga ma ayoni ndi majini ogwira ntchito. Tinthu tamphamvu tomwe timayatsidwa ndi plasma timatha kupyola plasma polymerization pamalo olumikizirana a gasi ndi gawo lolimba. Monomer ndiye gwero la plasma polymerization, ndipo mpweya wolowerera ndi monomer ziyenera kukhala ndi chiyero china.

(3) Kusankha mphamvu yosonkhezera

Plasma ikhoza kupangidwa pogwiritsa ntchito magetsi a DC, high-frequency, RF, kapena microwave kuti ipereke malo a plasma kuti polymerization ichitike. Kusankha kwa magetsi kumatsimikiziridwa kutengera zofunikira pa kapangidwe ndi magwiridwe antchito a polima.

(4) Kusankha njira yotulutsira

Pazofunikira za polima, plasma polymerization ingasankhe njira ziwiri zotulutsira: kutulutsa kosalekeza kapena kutulutsa kwa pulse.

(5) Kusankha magawo otulutsira

Pochita plasma polymerization, magawo otulutsira madzi ayenera kuganiziridwa kuchokera ku magawo a plasma, makhalidwe a polymer ndi zofunikira pa kapangidwe kake. Kukula kwa mphamvu yogwiritsidwa ntchito panthawi ya polymerization kumatsimikiziridwa ndi kuchuluka kwa chipinda chotsukira madzi, kukula kwa electrode, kuchuluka kwa kuyenda kwa monomer ndi kapangidwe kake, kuchuluka kwa polymerization, ndi kapangidwe ka polymer ndi magwiridwe antchito ake. Mwachitsanzo, ngati voliyumu ya chipinda chochitira ndi 1L ndipo RF Plasma polymerization yagwiritsidwa ntchito, mphamvu yotulutsira madzi idzakhala pakati pa 10 ~ 30W. Pansi pa mikhalidwe yotere, plasma yopangidwa imatha kusonkhana kuti ipange filimu yopyapyala pamwamba pa workpiece. Kukula kwa filimu ya plasma polymerization kumasiyana malinga ndi magetsi, mtundu wa monomer ndi kuchuluka kwa madzi, komanso momwe zinthu zilili. Kawirikawiri, kukula kwa madzi ndi 100nm/min~1um/min.

(6) Kuyeza kwa magawo mu polymerization ya Plasma

Ma parameter a plasma ndi ma process parameter omwe ayenera kuyezedwa mu Plasma polymerization ndi awa: discharge voltage, discharge current, discharge frequency, Electron temperature, density, reaction group type and concentration, etc.

——Nkhani iyi yatulutsidwa ndi Guangdong Zhenhua Technology, awopanga makina opaka utoto.