Ungasenza kanjani isiponji se-latex esigcina ilangabi?

Ngezidingo zesiponji se-latex ezivimbela ilangabi, okulandelayo ukuhlaziywa okusekelwe ezivimbela ilangabi eziningana ezikhona (i-aluminium hydroxide, i-zinc borate, i-aluminium hypophosphite, i-MCA) kanye nezincomo zokwakheka:

I. Ukuhlaziywa Kokusebenza Okukhona Okungavumeli Umlilo

I-Aluminium Hydroxide (ATH)
Izinzuzo:

• Inobungani nemvelo, izindleko eziphansi.
• Isebenza ngokubola kwe-endothermic kanye nokukhishwa komphunga wamanzi, okulungele izinhlelo ezingenayo i-halogen.

Okubi:

• Kudinga umthwalo ophezulu (30-50 phr) ukuze kusebenze kahle, okungathinta ukuqina kwesiponji kanye nobuningi.

Ukusebenza:

• Ifaneleka ezinhlotsheni eziyisisekelo zokuvimbela umlilo.
• Kunconywa ukuthi kuhlanganiswe nama-synergists (isb., i-zinc borate).

I-Zinc Borate
Izinzuzo:

• I-synergistic flame retardant, ithuthukisa ukusebenza kahle kwe-ATH.
• Ikhuthaza ukwakheka kwe-char futhi icindezela intuthu.

Okubi:

• Ukusebenza kahle okulinganiselwe uma kusetshenziswa kodwa; kudinga ukuhlanganiswa nezinye izinto ezivimbela ilangabi.

Ukusebenza:

• Kunconywa njengendlela yokusebenzisana kwe-ATH noma i-aluminium hypophosphite.

I-Aluminium Hypophosphite
Izinzuzo:

• Isebenza kahle kakhulu, ayinayo i-halogen, ilayisha kancane (10-20 phr).
• Ukuqina okuhle kokushisa, okulungele izidingo zokuphelelwa amandla komlilo okuphezulu.

Okubi:

• Izindleko eziphakeme.
• Ukuhambisana nezinhlelo ze-latex kudinga ukuqinisekiswa.

Ukusebenza:

• Ifanele amazinga okushisa aphezulu (isb., UL94 V-0).
• Ingasetshenziswa yodwa noma ihlanganiswe ndawonye.

I-MCA (i-Melamine Cyanurate)
Izinzuzo:

• Isivimbeli somlilo esisekelwe ku-nitrogen, sivimbela intuthu.

Okubi:

• Ukuhlakazeka okubi.
• Kungaphazamisa ukugqwala.
• Izinga lokushisa eliphezulu lokubola (~300°C), alifani nokucubungula i-latex kwezinga lokushisa eliphansi.

Ukusebenza:

• Akunconywa njengento eza kuqala; kudinga ukuqinisekiswa kokuhlolwa.

II. Iziphakamiso Ezinconyiwe Nezincomo Zenqubo

Ifomula 1: I-ATH + I-Zinc Borate (Inketho Yezomnotho)
Ukwakheka:

• I-Aluminium Hydroxide (ATH): 30-40 phr
• I-Zinc Borate: 5-10 phr
• Isisabalalisi (isb., i-ejenti yokuhlanganisa i-silane): 1-2 phr (ithuthukisa ukusabalala)

Izici:

• Izindleko eziphansi, inobungani nemvelo.
• Ifanele izidingo ezijwayelekile zokuvimbela ilangabi (isb., UL94 HF-1).
• Kunganciphisa kancane ukuqina kwesiponji; Kudingeka ukulungiswa kwe-Vulcanization.

Ifomula 2: I-Aluminium Hypophosphite + I-Zinc Borate (Inketho Yokusebenza Kahle Kakhulu)
Ukwakheka:

• I-Aluminium Hypophosphite: 15-20 phr
• I-Zinc Borate: 5-8 phr
• I-Plasticizer (isb., i-parafini ewuketshezi): 2-3 phr (ithuthukisa ukucutshungulwa)

Izici:

• Ukusebenza kahle kokulinda ilangabi okuphezulu, ukulayisha okuphansi.
• Ifanele izimo ezifunwa kakhulu (isb., ukushiswa okuqondile V-0).
• Ukufaneleka kwe-aluminium hypophosphite ne-latex kudinga ukuhlolwa.

Ifomu 3: I-ATH + I-Aluminium Hypophosphite (Inketho Elinganiselayo)
Ukwakheka:

• I-Aluminium Hydroxide: 20-30 phr
• I-Aluminium Hypophosphite: 10-15 phr
• I-Zinc Borate: 3-5 phr

Izici:

• Ibhalansi yezindleko kanye nokusebenza.
• Kunciphisa ukuthembela ku-single flame retardant, kunciphisa umthelela ezimpahleni zomzimba.

III. Izinto Okucatshangwa Ngazo Ngenqubo

Ukuhlakazeka:

• Izinto ezivimbela ilangabi kufanele zigaywe zibe yi-≤5μm ukuze kugwenywe ukuthinta isakhiwo se-foam.
• Kunconywa ukusatshalaliswa kwe-latex noma imishini yokuxuba esheshayo ngaphambi kwesikhathi.

Izimo Zokwelapha:

• Lawula izinga lokushisa lokupholisa (ngokuvamile 110-130°C ye-latex) ukuvimbela ukubola kwangaphambi kwesikhathi kwezinto ezivimbela ilangabi.

Ukuhlolwa Kokusebenza:

• Ukuhlolwa okubalulekile: Inkomba ye-Oxygen (LOI), Ukusha Okuqondile (UL94), Ubuningi, Ukuqina.
• Uma ukuvinjelwa komlilo kunganele, khulisa kancane kancane izilinganiso ze-aluminium hypophosphite noma ze-ATH.

IV. Izincomo Ezengeziwe

Ukuhlolwa kwe-MCA:

• Uma uhlola, sebenzisa ama-phr angu-5-10 ngamaqoqo amancane ukuze ubone umthelela ekufaneni kwegwebu.

Izitifiketi Zemvelo:

• Qinisekisa ukuthi izinto ezivimbela ilangabi ezikhethiwe ziyahambisana ne-RoHS/REACH yokuthumela kwamanye amazwe.

Izinhlanganisela Ezihambisanayo:

• Cabanga ngokungeza inani elincane le-nanoclay (2-3 phr) ukuze uthuthukise imiphumela yesithiyo se-char.

This proposal serves as a reference. Small-scale trials are recommended to optimize specific ratios and process parameters. More info , pls contact lucy@taifeng-fr.com