Intangiriro kuri Azote ishingiye kuri Flame Retardants ya Nylon

Intangiriro kuri Azote ishingiye kuri Flame Retardants ya Nylon

Azote ishingiye kuri azote irangwa n'uburozi buke, kutangirika, ubushyuhe bwa UV hamwe na UV, imikorere myiza ya flame-retardant, hamwe no gukoresha neza. Nyamara, ibibi byabo birimo ingorane zo gutunganya no gutatana nabi muri materix ya polymer. Indwara ya azote ikunze gukoreshwa kuri nylon harimo MCA (melamine cyanurate), melamine, na MPP (melamine polyphosphate).

Uburyo bwa flame-retardant uburyo bukubiyemo ibintu bibiri:

1. “Sublimation and Endothermic” Mechanism physique: Flame retardant igabanya ubushyuhe bwubuso bwibikoresho bya polymer kandi ikabitandukanya numwuka binyuze muri sublimation no kwinjiza ubushyuhe.
2. Catalitike ya Carboneisiyonike hamwe na Mechanism ya Intumescente mu cyiciro cyegeranye: Flame retardant ikorana na nylon, iteza imbere karubone no kwaguka.

MCA yerekana imirimo ibiri murwego rwa flame-retardant, iteza imbere karubone ndetse no kubira ifuro. Uburyo bwa flame-retardant nuburyo bukora buratandukanye bitewe nubwoko bwa nylon. Ubushakashatsi bwakozwe kuri MCA na MPP muri PA6 na PA66 bugaragaza ko aba retardants ba flame bitera guhuza muri PA66 ariko bigatera kwangirika muri PA6, bikavamo imikorere myiza yumuriro muri PA66 kuruta muri PA6.

1. Melamine Cyanurate (MCA)

MCA ikomatanyirizwa muri melamine na acide cyanuric mumazi, ikora hydrogène ihuza hydrogene. Nibintu byiza bya halogene, bidafite ubumara buke, hamwe numuriro wumwotsi muke ukoreshwa muri nylon polymers. Nyamara, gakondo MCA ifite aho ishonga cyane (kubora no kugabanuka hejuru ya 400 ° C) kandi irashobora kuvangwa gusa na resin muburyo bukomeye, biganisha ku gutatana kutaringaniye hamwe nubunini bunini, bigira ingaruka mbi kumikorere ya flame-retardant. Byongeye kandi, MCA ikora cyane cyane mugice cya gaze, bigatuma habaho char char nkeya kandi irekuye, karubone idakingira mugihe cyo gutwikwa.

Kugira ngo ibyo bibazo bikemuke, tekinoroji ya molekile ikoreshwa mu guhindura MCA itangiza inyongeramusaruro ya flame-retardant (WEX), igabanya aho gushonga kwa MCA, igafasha gushonga hamwe no gukwirakwiza ultra-nziza hamwe na PA6. WEX kandi yongerera imbaraga char mugihe cyo gutwikwa, kuzamura ubwiza bwurwego rwa karubone no gushimangira ingaruka za flame-retardant ya MCA, bityo ikabyara ibikoresho byangiza umuriro nibikorwa byiza.

2. Intumecent Flame Retardant (IFR)

IFR ni sisitemu ikomeye ya halogen-idafite flame-retardant sisitemu. Ibyiza byayo kurenza halogenated flame retardants harimo umwotsi muke hamwe no gusohora gaze idafite uburozi mugihe cyo gutwikwa. Byongeye kandi, char char yakozwe na IFR irashobora gukurura gushonga, gutwika polymer, kubuza gutonyanga numuriro.

Ibice byingenzi bigize IFR birimo:

• Inkomoko ya gaze (ibice bishingiye kuri melamine)
• Inkomoko ya aside (fosifore-azote flame retardants)
• Inkomoko ya karubone (nylon ubwayo)
• Ibikoresho byongera imbaraga (urugero, zinc borate, hydroxide ya aluminium) hamwe nuburyo bwo kurwanya ibitonyanga.

Iyo igipimo rusange cya fosifore-azote flame retardants hamwe na melamine ishingiye ni:

• Munsi ya 1%: Ingaruka idahagije ya flame-retardant.
• Hejuru ya 30%: Guhindagurika bibaho mugihe cyo gutunganya.
• Hagati ya 1% –30% (cyane cyane 7% –20%): Imikorere myiza ya flame-retardant itagize ingaruka kubikorwa.

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