ukwakheka kwereferensi yerabha ye-silicone okusekelwe ezithiyetha zomlilo ezingenayo i-halogen

Nazi imiklamo emihlanu yokwakheka kwerabha ye-silicone esekelwe ezithinti zomlilo ezingenayo i-halogen, kufaka phakathi izithinti zomlilo ezinikezwa yikhasimende (i-aluminium hypophosphite, i-zinc borate, i-MCA, i-aluminium hydroxide, kanye ne-ammonium polyphosphate). Le miklamo ihlose ukuqinisekisa ukugcinwa komlilo ngenkathi kunciphisa amanani okwengezwayo ukuze kuncishiswe umthelela ezimpahleni zerabha ye-silicone.

1. Uhlelo Lokuvimbezela Ilangabi Oluhambisanayo lwe-Phosphorus-Nitrogen (Uhlobo Lokwakha I-Char Olusebenza Kakhulu)

Ithagethi: UL94 V-0, intuthu ephansi, ifanele ukusetshenziswa kwezinga lokushisa eliphakathi kuya kweliphezulu

Irabha Eyisisekelo: Irabha ye-silicone ye-Methyl vinyl (VMQ, 100 phr)

Izithibi Zomlilo:

• I-aluminium hypophosphite (AHP, esekelwe ku-phosphorus): 15 phr
• Inikeza umthombo we-phosphorus ophumelelayo, ikhuthaza ukwakheka kwe-char, futhi ivimbela ukusha kwesigaba segesi.
• I-Melamine cyanurate (i-MCA, esekelwe ku-nitrogen): 10 imisho
• Isebenzisana ne-phosphorus, ikhipha amagesi angasebenzi, futhi inciphise umoya-mpilo.
• I-Zinc borate (ZnB): 5 imisho
• Ikhuthaza ukwakheka kwe-char, icindezela intuthu, futhi ithuthukise ukuzinza kwesendlalelo se-char.
• I-aluminium hydroxide (ATH, indlela yamakhemikhali, 1.6–2.3 μm): 20 phr
• Ukubola kwe-endothermic, ukubambezeleka komlilo okusizayo, kanye nokuhlakazeka okuthuthukisiwe.

Izithasiselo:

• Uwoyela we-silicone we-hydroxyl (2 phr, uthuthukisa ukucutshungulwa)
• I-silica efumile (10 phr, ukuqinisa)
• I-ejenti yokwelapha (i-Diperoxide, 0.8 phr)

Izici:

• Umthwalo ophelele we-retardant yomlilo ~50 phr, ukulinganisela i-retardant yomlilo kanye nezakhiwo zemishini.
• Ukusebenzisana kwe-phosphorus-nitrogen (AHP + MCA) kunciphisa inani elidingekayo lama-flame retardants ngamanye.

2. Uhlelo Lokuvimbezela Umlilo Olungaphakathi (Uhlobo Lokulayisha Okuphansi)

Ithagethi: UL94 V-1/V-0, ifanele imikhiqizo emincane

Irabha Eyisisekelo: I-VMQ (izinhlamvu eziyi-100)

Izithibi Zomlilo:

• I-Ammonium polyphosphate (i-APP, esekelwe ku-phosphorus-nitrogen): 12 phr
• Umongo wokwakheka kwe-intumescent char, okuhambisana kahle nerabha ye-silicone.
• I-aluminium hypophosphite (AHP): 8 imisho
• Umthombo we-phosphorus owengeziwe, kunciphisa i-APP hygroscopicity.
• I-Zinc borate (ZnB): 5 imisho
• Ukuvuselelwa kwe-char kanye nokunciphisa ukuvuza.
• I-aluminium hydroxide (egayiwe, 3–20 μm): 15 phr
• I-retardant yomlilo engabizi kakhulu, inciphisa ukulayisha kwe-APP.

Izithasiselo:

• Uwoyela we-vinyl silicone (3 phr, ipulasitiki)
• I-silica evundile (15 phr, ukuqinisa)
• Uhlelo lokupholisa lweplatinum (0.1% Pt)

Izici:

• Umthwalo ophelele ovimbela ilangabi ongama-40 phr, osebenza kahle emikhiqizweni emincane ngenxa yendlela yokungena kwesisu.
• I-APP idinga ukwelashwa kwendawo (isb., i-silane coupling agent) ukuvimbela ukufuduka.

3. Uhlelo Oluthuthukisiwe lwe-Aluminium Hydroxide Olulayisha Kakhulu (Uhlobo Olungabizi Kakhulu)

Ithagethi: UL94 V-0, ifanele imikhiqizo noma izintambo ezijiyile

Irabha Eyisisekelo: I-VMQ (izinhlamvu eziyi-100)

Izithibi Zomlilo:

• I-aluminium hydroxide (ATH, indlela yamakhemikhali, 1.6–2.3 μm): 50 phr
• Isivimbeli somlilo esiyinhloko, ukubola kwe-endothermic, usayizi wezinhlayiya ezincane ukuze kuhlakazeke kangcono.
• I-aluminium hypophosphite (AHP): 5 imisho
• Kuthuthukisa ukusebenza kahle kokwakheka kwe-char, kunciphisa ukulayisha kwe-ATH.
• I-Zinc borate (ZnB): 3 imisho
• Ukucindezela intuthu kanye nokulwa nokukhanya.

Izithasiselo:

• I-ejenti yokuxhumanisa i-Silane (KH-550, i-1 phr, ithuthukisa isikhombimsebenzisi se-ATH)
• I-silica efumile (8 phr, ukuqinisa)
• Ukwelapha i-peroxide (i-DCP, i-1 phr)

Izici:

• Umthwalo ophelele ovimbela ilangabi ungaphezulu kwama-58 phr, kodwa i-ATH iyabusa ekusebenzeni kahle kwezindleko.
• Usayizi omncane wezinhlayiya ze-ATH unciphisa ukulahleka kwamandla okudonsa.

4. Uhlelo lwe-Aluminium Hypophosphite (AHP) oluzimele

Isicelo: UL94 V-1/V-2, noma lapho imithombo ye-nitrogen ingathandeki (isb., ukugwema ukugqwala kwe-MCA okuthinta ukubukeka).

Ukwakheka Okunconyiwe:

• Irabha Eyisisekelo: I-VMQ (izinhlamvu eziyi-100)
• I-aluminium hypophosphite (AHP): 20–30 imizuzwana
• Okuqukethwe okuphezulu kwe-phosphorus (40%); ama-20 ph ahlinzeka nge-8% ye-phosphorus yokuvimbela ilangabi okuyisisekelo.
• Ku-UL94 V-0, khuphuka uye ku-30 ​​phr (kungase kuphazamise izakhiwo zemishini).
• Ukuqinisa Ukugcwalisa: I-Silica (10–15 phr, igcina amandla)
• Izithasiselo: Uwoyela we-Hydroxyl silicone (2 phr, ukucutshungulwa) + i-ejenti yokwelapha (i-Diperoxide noma uhlelo lwe-platinum).

Izici:

• Ithembele ekubambezelekeni komlilo kwesigaba esihlanganisiwe (ukwakheka kwe-char), ithuthukisa kakhulu i-LOI kodwa inokunciphisa intuthu.
• Ukulayisha okuphezulu (>25 phr) kungenza izinto ziqine; sincoma ukuthi wengeze i-ZnB engu-3-5 phr ukuze uthuthukise ikhwalithi yeshadi.

5. I-Aluminium Hypophosphite (AHP) + I-MCA Blend

Isicelo: UL94 V-0, umthwalo ophansi ohambisana nokuhlangana kwe-gas-phase flame retardant.

Ukwakheka Okunconyiwe:

• Irabha Eyisisekelo: I-VMQ (izinhlamvu eziyi-100)
• I-aluminium hypophosphite (AHP): 12–15 imisho
• Umthombo we-phosphorus wokwakheka kwe-char.
• I-MCA: 8–10 imisho
• Umthombo we-nitrogen wokubambisana kwe-PN, ukhipha amagesi angasebenzi (isb., i-NH₃) ukucindezela ukusabalala komlilo.
• Ukuqinisa Ukugcwalisa: I-Silica (izinhlamvu eziyi-10)
• Izithasiselo: I-ejenti yokuxhuma i-Silane (i-phr eyodwa, usizo lokusabalalisa) + i-ejenti yokwelapha.

Izici:

• Umthwalo ophelele ovimbela ilangabi ~20–25 phr, ophansi kakhulu kune-AHP ezimele.
• I-MCA yehlisa isidingo se-AHP kodwa ingathinta kancane ukucaca (sebenzisa i-nano-MCA uma kudingeka ukucaca).

Isifinyezo Sokwakheka Okungalawuli Ilanga

Izincomo Zokuhlola

1. Ukuhlolwa Okubalulekile: AHP + MCA (15+10 phr). Uma i-V-0 ifinyelelwa, yehlisa i-AHP kancane kancane (isb., 12+10 phr).
2. Ukuhlolwa kwe-AHP okuzimele: Qala ku-20 phr, ukhuphule ngamaphesenti ama-5 ukuhlola i-LOI ne-UL94, uqaphe izakhiwo zemishini.
3. Ukucindezela Intuthu: Engeza i-3–5 phr ZnB kunoma iyiphi indlela ngaphandle kokubeka engcupheni ukuvinjelwa komlilo.
4. Ukuthuthukisa IzindlekoFaka i-ATH engu-10–15 phr ukuze unciphise izindleko, yize inani lokulayisha lokugcwalisa likhuphuka.

Inqubo Yokuxuba Enconyiwe

(Ngerabha ye-silicone eyongezwa kabili)

1. Ukwelashwa Kwangaphambi Kwerabha Eyisisekelo:

• Faka irabha ye-silicone (isb., i-107 gum, uwoyela we-vinyl silicone) ku-planetary mixer, bese ususa igesi ngaphansi kwe-vacuum uma kudingeka.

1. Ukwengezwa Okubambezela Ilangabi:

• Izinto ezivimbela ilangabi ezifakwe ufulawa (isb., ATH, MH):
• Faka amaqoqo, hlanganisa kusengaphambili nerabha eyisisekelo (ukuxuba ngesivinini esiphansi, imizuzu eyi-10-15) ukuze ugweme ukuhlangana.
• Yomisa ku-80–120°C uma i-hygroscopic.
• Izinto ezivimbela ilangabi loketshezi (isb., ama-phosphate):
• Hlanganisa ngqo namafutha e-silicone, i-crosslinker, njll., ngaphansi kokugunda okuphezulu (imizuzu engama-20-30).

1. Ezinye Izithasiselo:

• Faka ngokulandelana ama-filler (isb., i-silica), i-crosslinker (i-hydrosilane), i-catalyst (i-platinum), kanye nama-inhibitor.

1. Ukuhlanganiswa kwe-Homogenization:

• Hlanza futhi ukuhlakazeka usebenzisa umshini wokugaya onama-roll amathathu noma i-emulsifier eshear ephezulu (okubalulekile kuma-nano-additives afana nama-CNT).

1. Ukususa igesi kanye nokuhlunga:

• Isihlungi se-vacuum degas (-0.095 MPa, imizuzu engama-30), ukuze kutholakale izidingo zokuhlanzeka okuphezulu.

Izinto Ezibalulekile Okufanele Uzicabangele

• Ukukhethwa Okungalawuli Ilangatye:
• Ama-retant angenayo i-halogen (isb., i-ATH) adinga usayizi wezinhlayiya ezincane (1–5 μm); ukulayisha ngokweqile kulimaza izakhiwo zemishini.
• Ama-retardants asekelwe ku-silicone (isb., ama-resin e-phenyl silicone) anikeza ukuhambisana okungcono kodwa ngentengo ephezulu.
• Ukulawulwa Kwenqubo:
• Izinga lokushisa ≤ 60°C (kuvimbela ubuthi be-platinum catalyst noma ukuqina ngaphambi kwesikhathi).
• Umswakama ≤ 50% RH (kugwema ukusabela phakathi kwamafutha e-hydroxyl silicone kanye nezinto ezivimbela ilangabi).

Isiphetho

• Ukukhiqizwa Okukhulu: Hlanganisa izinto ezivimbela ilangabi kusengaphambili nerabha eyisisekelo ukuze usebenze kahle.
• Izidingo Zokuzinza Okuphezulu: Hlanganisa ngesikhathi sokuxuba ukuze unciphise izingozi zokugcina.
• Izinhlelo Zokuvimbezela Ilanga Elincane: Ukusabalala okuphoqelekile okunoboya obuphezulu ukuze kuvinjelwe ukuhlangana.

More info., pls contact lucy@taifeng-fr.com