I-Aluminium Hypophosphite ene-flame retardant ne-MCA ye-EVA Heat-Shrink Tubing

I-Aluminium Hypophosphite ene-flame retardant ne-MCA ye-EVA Heat-Shrink Tubing

Uma usebenzisa i-aluminium hypophosphite, i-MCA (i-melamine cyanrate), ne-magnesium hydroxide njengezinqamuli zomlilo kushubhu lokunciphisa ukushisa kwe-EVA, izigaba zomthamo ezinconyiwe nezikhombisi-ndlela zokusebenzisa kahle zimi kanje:

1. Umthamo onconyiwe wama-Flame Retardants

I-Aluminium Hypophosphite

• Umthamo:5%–10%
• Umsebenzi:Isebenza kahle kakhulu i-flame retardant, ithuthukisa ukwakheka kwe-char, futhi yehlise izinga lokukhishwa kokushisa.
• Qaphela:Amanani eqile angase aphazamise ukuguquguquka kwezinto ezibonakalayo; ama-synergistic agents kufanele ahlanganiswe ukuze athuthukiswe.

I-MCA (i-Melamine Cyanurate)

• Umthamo:10%–15%
• Umsebenzi:I-Gas-phase flame retardant, imunca ukushisa futhi ikhiphe amagesi angasebenzi (isb, i-NH₃), isebenzisana ne-aluminium hypophosphite ukuze kuthuthukiswe ukubambezeleka komlilo.
• Qaphela:Ukugcwala ngokweqile kungase kubangele ukufuduka; ukuhambisana ne-EVA kumele kuqinisekiswe.

I-Magnesium Hydrooxide (Mg(OH)₂)

• Umthamo:20%–30%
• Umsebenzi:Ukubola kwe-endothermic kukhipha umhwamuko wamanzi, kuncibilikise amagesi avuthayo kanye nokucindezela intuthu.
• Qaphela:Ukulayisha okuphezulu kunganciphisa izakhiwo zemishini; ukuguqulwa kwendawo kunconywa ukuthuthukisa ukuhlakazeka.

2. Izincomo Zokuthuthukisa Ukwakhiwa

• Ingqikithi Yesistimu Yokubuyiswa Komlilo:Akufanele kudlule u-50% ukulinganisa ukubusheka komlilo nokuqhubekela phambili (isb., ukuguquguquka, izinga lokushwabana).
• Imiphumela ye-Synergistic:
• I-Aluminium hypophosphite ne-MCA inganciphisa imithamo yomuntu ngamunye (isb, 8% i-aluminium hypophosphite + 12% MCA).
• I-Magnesium hydroxide ihambisana ne-flame retadancy ngokusebenzisa imiphumela ye-endothermic ngenkathi yehlisa intuthu.
• Ukwelashwa kwendawo:I-Silane coupling agents ingathuthukisa ukuhlakazeka nokuhlangana kobuso be-magnesium hydroxide.
• Izithasiselo Ezisizayo:
• Engeza u-2%–5% wabenzeli be-char-forming (isb., i-pentaerythritol) ukuze uthuthukise ukuqina kwe-char layer.
• Faka amanani amancane epulasitiki (isb, uwoyela wesoya epoxidized) ukuze unxephezele ukulahleka kokuvumelana nezimo.

3. Iziqondiso Zokuqinisekisa Ukusebenza

• Ukuhlola Ukuncipha Kwelangabi:
• Ukuhlolwa kokushiswa okuqondile kwe-UL94 (okuhlosiwe: V-0).
• I-Limiting Oxygen Index (LOI>28%).
• Izici zikaMechanical:
• Linganisa amandla okuqina nobude ngesikhathi sekhefu ukuze uqinisekise ukuthi ukuguquguquka kuhlangabezana nezidingo zohlelo lokusebenza.
• Ukuqhubekela phambili:
• Qaphela i-Melt Flow Index (MFI) ukuze ugweme ubunzima bokucubungula ngenxa yokugcwalisa ngokweqile.

4. Izindleko Nezemvelo

• Ibhalansi Yezindleko:I-aluminium hypophosphite ibiza kakhulu; umthamo wayo ungancishiswa (ungezwe nge-MCA) ukuze ulawule izindleko.
• Ubungane Bemvelo:I-Magnesium hydroxide ayinabo ubuthi futhi ayicindezeli intuthu, iyenza ifaneleke ukusetshenziswa eco-friendly.

Ukwakhiwa Kwesibonelo (ngokwereferensi kuphela):

• I-Aluminium Hypophosphite: 8%
• I-MCA: 12%
• I-Magnesium Hydrooxide: 25%
• I-EVA Matrix: 50%
• Ezinye Izithasiselo (ama-ejenti wokuhlanganisa, ama-plasticizers, njll.): 5%