ụfọdụ akwụkwọ ntụaka silicone roba dabere na ihe na-egbochi ọkụ na-enweghị halogen

Nke a bụ ihe nrụpụta silicone rubber ise dabere na ọkụ retardants na-enweghị halogen, na-etinye ọkụ ọkụ nke onye ahịa nyere (aluminom hypophosphite, zinc borate, MCA, aluminum hydroxide, na ammonium polyphosphate). Atụmatụ ndị a bụ iji hụ na ire ọkụ na-akwụsị mgbe ị na-ebelata oke mgbakwunye iji belata mmetụta na akụrụngwa nke rọba silicone.

1. Phosphorus-Nitrogen Synergistic Flame Retardant Sistemu (Ụdị Ụdị Char-arụ ọrụ dị elu)

Ebumnuche: UL94 V-0, obere anwụrụ ọkụ, kwesịrị ekwesị maka ngwa ngwa na-ekpo ọkụ na-ekpo ọkụ

Rubber isi: Methyl vinyl silicone roba (VMQ, 100 phr)

Ndị na-egbochi ire ọkụ:

• Aluminom hypophosphite (AHP, nke sitere na phosphorus): 15 pr
• Na-enye isi iyi phosphorus na-arụ ọrụ nke ọma, na-akwalite nhazi char, ma na-egbochi ọkụ ọkụ-phase gas.
• Melamine cyanurate (MCA, dabere na nitrogen):10 phr
• Na-ejikọta ya na phosphorus, na-ahapụ gas inert, na-agbaze oxygen.
• Zinc borate (ZnB):5fr
• Na-akwalite nhazi cha cha, na-egbochi anwụrụ ọkụ, ma na-akwalite nkwụsi ike nke oyi akwa char.
• Aluminom hydroxide (ATH, usoro kemịkalụ, 1.6-2.3 μm):20fr
• Ire endothermic, ire ọkụ inyeaka, yana mgbasawanye nke ọma.

Ihe mgbakwunye:

• Hydroxyl silicone mmanụ (2 phr, na-eme ka nhazi usoro)
• Silica futed (phr 10, nkwado)
• Onye na-agwọ ọrịa (Diperoxide, 0.8phr)

Atụmatụ:

• Mkpokọta ọkụ retardant loading ~ 50 phr, na-edozi ire ere na akụrụngwa akụrụngwa.
• Mmekọrịta phosphorus-nitrogen (AHP + MCA) na-ebelata ego achọrọ nke ihe ọkụ ọkụ n'otu n'otu.

2. Sistemụ Nkwụghachi Ọkụ Intumescent (Ụdị Ibu Ibu dị ala)

Ebumnuche: UL94 V-1 / V-0, adabara mkpa ngwaahịa

Rubber isiVMQ (100 phr)

Ndị na-egbochi ire ọkụ:

• Ammonium polyphosphate (APP, phosphorus-nitrogen dabeere): 12 ph
• Isi ihe nrụpụta intumescent char, yana ezigbo ndakọrịta na rọba silicone.
• Aluminom hypophosphite (AHP):8pr
• Isi iyi phosphorus mgbakwunye, na-ebelata APP hygroscopicity.
• Zinc borate (ZnB):5fr
• Mkparịta ụka char catalysis na mbelata ntapu.
• Aluminom hydroxide (ala, 3-20 μm): 15 pr
• Nkwụghachi ọkụ inyeaka dị ọnụ ala, na-ebelata ibu APP.

Ihe mgbakwunye:

• Vinyl silicone mmanụ (3 phr, plasticization)
• Silica ezoro ezo (phr 15, nkwado)
• Sistemụ ọgwụgwọ Platinum (0.1% Pt)

Atụmatụ:

• Mkpokọta ọkụ retardant loading ~40 phr, dị irè maka mkpa ngwaahịa n'ihi intumescent usoro.
• APP chọrọ ọgwụgwọ elu (dịka ọmụmaatụ, onye na-ahụ maka njikọta silane) iji gbochie mbugharị.

3. Aluminom Hydroxide kacha mma na-ebu ibu (ụdị dị ọnụ ahịa)

Ebumnuche: UL94 V-0, adabara oké ngwaahịa ma ọ bụ eriri

Rubber isiVMQ (100 phr)

Ndị na-egbochi ire ọkụ:

• Aluminom hydroxide (ATH, usoro kemịkalụ, 1.6-2.3 μm):50fr
• Isi ire ọkụ retardant, endothermic ire ere, obere urughuru size maka mma mgbasa.
• Aluminom hypophosphite (AHP):5fr
• Na-eme ka nrụpụta cha cha, na-ebelata ibu ATH.
• Zinc borate (ZnB):3fr
• Mbelata anwụrụ ọkụ na mgbochi ọkụ.

Ihe mgbakwunye:

• Onye na-ahụ maka njikọta Silane (KH-550, 1 phr, na-emezi interface ATH)
• Silica na-ekpo ọkụ (8phr, nkwado)
• Ọgwụgwọ Peroxide (DCP, 1 phr)

Atụmatụ:

• Mkpokọta ọkụ retardant loading ~ 58 phr, mana ATH na-achịkwa maka ịrụ ọrụ ọnụ ahịa.
• Obere urughuru ATH na-ebelata mfu ike tensile.

4. Sistemụ Aluminom Hypophosphite Standalone (AHP).

Ngwa: UL94 V-1/V-2, ma ọ bụ ebe nitrogen na-adịghị mma (dịka ọmụmaatụ, na-ezere MCA ụfụfụ na-emetụta ọdịdị).

Nhazi akwadoro:

• Rubber isiVMQ (100 phr)
• Aluminom hypophosphite (AHP): 20-30 p.m
• Ọdịnaya phosphorus dị elu (40%); 20 phr na-enye ~ 8% phosphorus maka nkwụsị ọkụ bụ isi.
• Maka UL94 V-0, bawanye na 30 phr (nwere ike imebi ihe eji arụ ọrụ).
• Filler na-ewusi ikeSilica (10-15 phr, na-akwado ike)
• Ihe mgbakwunye: Hydroxyl silicone mmanụ (2 phr, nhazi nhazi) + onye na-agwọ ọrịa (Diperoxide ma ọ bụ usoro platinum).

Atụmatụ:

• Na-adabere na ogologo oge ire ọkụ (mmepụta cha cha), na-eme ka LOI dịkwuo mma mana ọ nwere obere nkwụsị anwụrụ ọkụ.
• Ibu ibu dị elu (> 25 phr) nwere ike ime ka ihe ahụ sie ike; kwadoro ịgbakwunye 3–5 phr ZnB iji kwalite ogo chaja.

5. Aluminium Hypophosphite (AHP) + MCA Ngwakọta

Ngwa: UL94 V-0, obere ntinye na gas-phase flame retardant synergy.

Nhazi akwadoro:

• Rubber isiVMQ (100 phr)
• Aluminom hypophosphite (AHP): 12–15 nkeji
• Isi mmalite nke phosphorus maka imepụta cha cha.
• MCA: 8-10 pr
• Nitrogen isi iyi maka mmekọrịta PN, na-ewepụta gas inert (dịka ọmụmaatụ, NH₃) iji gbochie mgbasa ire ọkụ.
• Filler na-ewusi ikeSilica (fr 10)
• Ihe mgbakwunye: Onye na-ejikọta Silane (1 phr, enyemaka mgbasa ozi) + onye na-agwọ ọrịa.

Atụmatụ:

• Mkpokọta ibu ọkụ retardant ~ 20-25 phr, dị ala karịa AHP kwụụrụ onwe ya.
• MCA na-ebelata ihe AHP chọrọ mana ọ nwere ike imetụta nghọta (jiri nano-MCA ma ọ bụrụ na achọrọ nghọta).

Nchịkọta nhazi ire ọkụ

Nkwanye nnwale

1. Nlele izizi: AHP + MCA (15+10 phr). Ọ bụrụ na enwetara V-0, jiri nwayọ belata AHP (dịka ọmụmaatụ, 12+10 phr).
2. Nnwale AHP kwụ ọtọ: Malite na 20 phr, mmụba site na 5 phr iji nyochaa LOI na UL94, nyochaa ihe eji arụ ọrụ.
3. Mgbochi anwụrụ ọkụ: Tinye 3–5 phr ZnB na usoro ọ bụla na-emebighị ire ọkụ.
4. Nkwalite ọnụ ahịa: Tinye 10-15 phr ATH iji belata ọnụ ahịa, n'agbanyeghị na mkpokọta ndochi na-abawanye.

Usoro ngwakọta akwadoro

(Maka mgbakwunye akụkụ abụọ-ọgwụgwọ silicone roba)

1. Ọgwụgwọ mbụ roba isi:

• Ibu roba silicone (dịka ọmụmaatụ, 107 chịngọm, mmanụ silicone vinyl) n'ime igwekota mbara ala, degas n'okpuru oghere ma ọ bụrụ na achọrọ ya.

1. Mgbakwụnye ire ọkụ:

• Ọkụ na-akụ ntụ ntụ (dịka, ATH, MH):
• Tinye na batches, tupu mix ya na roba isi (ngwakọta ọsọ ọsọ, 10-15 min) iji zere agglomeration.
• Akọrọ na 80-120 Celsius C ma ọ bụrụ na hygroscopic.
• Ihe mgbochi ọkụ (dịka ọmụmaatụ, phosphates):
• Gwakọta ya na mmanụ silicone, crosslinker, wdg, n'okpuru akwa akwa (20-30 min).

1. Ihe mgbakwunye ndị ọzọ:

• N'usoro tinye ihe ndochi (dịka ọmụmaatụ, silica), crosslinker (hydrosilane), ihe na-akpata (platinum), na ihe mgbochi.

1. Homogenization:

• Na-emezi mgbasawanye site na iji igwe igwe mpịakọta atọ ma ọ bụ emulsifier dị elu (dị oke mkpa maka mgbakwunye nano-agbakwunye dị ka CNT).

1. Degassing & Filtration:

• Vacuum degas (-0.095 MPa, 30 min), nyo maka ịdị ọcha chọrọ.

Isi Ntụle

• Nhọrọ na-egbochi ire ọkụ:
• Halogen-free retardants (dịka, ATH) chọrọ ezigbo urughuru nha (1-5 μm); oke ibu na-emerụ ihe eji arụ ọrụ.
• Ihe retardants dabere na silicone (dịka ọmụmaatụ, resins silicone phenyl) na-enye ndakọrịta ka mma mana ọ na-akwụ ụgwọ dị elu.
• Njikwa usoro:
• Okpomọkụ ≤ 60°C (na-egbochi nsi platinum na-akpata nsị ma ọ bụ ọgwụgwọ akaghi aka).
• Iru mmiri ≤ 50% RH (na-ezere mmeghachi omume n'etiti mmanụ silicone hydroxyl na ire ọkụ).

Mmechi

• Mmepụta Mass: Tupu mix ire ere retardants na isi roba maka arụmọrụ.
• Ihe ndị chọrọ ịdị elu: Gwakọta n'oge ngwakọta iji belata ihe egwu nchekwa.
• Sistemụ Nano-ọkụ Retardant: Amanyere mmanye akwa-shiee mgbasa iji gbochie agglomeration.

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