I-Aluminium Hypophosphite evimbela ilangabi kanye ne-MCA ye-EVA Heat-Shrink Tubing

I-Aluminium Hypophosphite evimbela ilangabi kanye ne-MCA ye-EVA Heat-Shrink Tubing

Uma usebenzisa i-aluminium hypophosphite, i-MCA (melamine cyanurate), kanye ne-magnesium hydroxide njengezithibi zomlilo kumapayipi okunciphisa ukushisa e-EVA, amazinga omthamo anconywayo kanye nezinkomba zokusebenza kahle yilezi ezilandelayo:

1. Isilinganiso Esinconywayo Sezinto Ezivimbela Umlilo

I-Aluminium Hypophosphite

• Isilinganiso:5%–10%
• Umsebenzi:Isebenza kahle kakhulu ekuvimbeleni ilangabi, ikhuthaza ukwakheka kwama-char, futhi inciphisa izinga lokukhishwa kokushisa.
• Qaphela:Inani eliningi kakhulu lingaphazamisa ukuguquguquka kwezinto; kufanele kufakwe ama-synergistic agents ukuze kuthuthukiswe.

I-MCA (i-Melamine Cyanurate)

• Isilinganiso:10%–15%
• Umsebenzi:I-gas-phase flame retardant, imunca ukushisa futhi ikhiphe amagesi angasebenzi (isb., i-NH₃), isebenzisana ne-aluminium hypophosphite ukuze ithuthukise i-flame retardant.
• Qaphela:Ukulayisha ngokweqile kungabangela ukufuduka; ukuhambisana ne-EVA kumele kuqinisekiswe.

I-Magnesium Hydroxide (Mg(OH)₂)

• Isilinganiso:20%–30%
• Umsebenzi:Ukubola kwe-endothermic kukhipha umhwamuko wamanzi, kunciphise amagesi avuthayo futhi kucindezele intuthu.
• Qaphela:Ukulayisha okuphezulu kunganciphisa izakhiwo zemishini; kunconywa ukuguqulwa kwendawo ukuze kuthuthukiswe ukusabalala.

2. Izincomo Zokuthuthukisa Ukwakheka

• Uhlelo Oluphelele Lokuvimbezela Umlilo:Akufanele kudlule u-50% ukuze kulinganiswe ukuphelelwa yisikhathi komlilo kanye nokucutshungulwa kwawo (isb., ukuguquguquka, izinga lokuncipha).
• Imiphumela Yokubambisana:
• I-aluminium hypophosphite kanye ne-MCA kunganciphisa imithamo ngayinye (isb., i-aluminium hypophosphite engu-8% + 12% MCA).
• I-Magnesium hydroxide igcwalisa ukuvimbela ilangabi ngemiphumela ye-endothermic ngenkathi inciphisa intuthu.
• Ukwelashwa Okuphezulu:Ama-ejenti okuhlanganisa i-silane angathuthukisa ukusabalala kanye nokubopha kwe-interfacial kwe-magnesium hydroxide.
• Izithasiselo Ezisizayo:
• Engeza ama-char-forming agents angu-2%–5% (isb., i-pentaerythritol) ukuze uthuthukise ukuzinza kwesendlalelo se-char.
• Faka inani elincane lama-plasticizer (isb., uwoyela wesoya ofakwe i-epoxidized) ukuze ubuyisele emuva ukulahlekelwa ukuguquguquka.

3. Iziqondiso Zokuqinisekisa Ukusebenza

• Ukuhlolwa Kokuvinjelwa Komlilo:
• Ukuhlolwa kokushisa okuqondile kwe-UL94 (okuqondiwe: V-0).
• Ukunciphisa Inkomba Yomoya-mpilo (LOI >28%).
• Izakhiwo Zemishini:
• Hlola amandla okuqina kanye nobude ngesikhathi sokuphumula ukuqinisekisa ukuthi ukuguquguquka kuhlangabezana nezidingo zohlelo lokusebenza.
• Ukucutshungulwa:
• Hlola i-Melt Flow Index (MFI) ukuze ugweme ubunzima bokucubungula ngenxa yokugcwalisa ngokweqile.

4. Izindleko kanye Nezinto Ezicatshangelwayo Emvelweni

• Ibhalansi Yezindleko:I-aluminium hypophosphite ibiza kakhulu; umthamo wayo ungancishiswa (ungezwe nge-MCA) ukulawula izindleko.
• Ubungane Kwemvelo:I-Magnesium hydroxide ayinabo ubuthi futhi ivimbela intuthu, okwenza ifaneleke ukusetshenziswa okunobungani nemvelo.

Isibonelo Sokwakheka (ngokwereferensi kuphela):

• I-Aluminium Hypophosphate: 8%
• I-MCA: 12%
• I-Magnesium Hydroxide: 25%
• I-EVA Matrix: 50%
• Ezinye izithako (ama-coupling agents, ama-plasticizers, njll.): 5%