imwe silicone rubber referensi yekugadzira yakavakirwa pane halogen-isina murazvo retardants

Heano mashanu mashanu silicone erabha ekugadzira madhizaini akavakirwa pane halogen-isina murazvo retardants, zvinosanganisira zvinodzosa moto zvinopihwa nemutengi (aluminium hypophosphite, zinc borate, MCA, aluminium hydroxide, uye ammonium polyphosphate). Aya madhizaini anovavarira kuona kudzoreredza kwemurazvo uku uchidzikisa huwandu hwekuwedzera kuderedza kukanganiswa kwemakanika eiyo silicone rabha.

1. Phosphorus-Nitrogen Synergistic Flame Retardant System (Yakakwirira-Kushanda Char-Kugadzira Type)

Target: UL94 V-0, utsi hwakaderera, hwakakodzera pakati-kusvika-pamusoro-tembiricha zvikumbiro

Base RubberMethyl vinyl silicone rabha (VMQ, 100 phr)

Flame Retardants:

• Aluminium hypophosphite (AHP, phosphorus-based): 15 pr
• Inopa inoshanda phosphorus sosi, inosimudzira char kuumbwa, uye inodzvanya gasi-chikamu kupisa.
• Melamine cyanrate (MCA, nitrogen-based): 10 pr
• Inopindirana nephosphorus, inobudisa magasi anert, uye inoderedza oksijeni.
• Zinc borate (ZnB): 5 pr
• Inokonzeresa kuumbwa kwechar, inodzvanya utsi, uye inosimudzira char layer kugadzikana.
• Aluminium hydroxide (ATH, makemikari nzira, 1.6-2.3 μm): 20 pr
• Endothermic decomposition, yebetsero murazvo retadancy, uye nekuvandudza dispersibility.

Additives:

• Hydroxyl silicone mafuta (2 phr, inovandudza processability)
• Fumed silica (10 phr, kusimbisa)
• Kurapa mumiririri (Diperoxide, 0.8 phr)

Features:

• Yese murazvo unodzoreredza kurodha ~ 50 phr, kuyera murazvo kudzoreredza uye michina zvivakwa.
• Phosphorus-nitrogen synergy (AHP + MCA) inoderedza huwandu hunodiwa hwemunhu anodzoreredza moto.

2. Intumescent Flame Retardant System (Low-Loading Type)

Target: UL94 V-1/V-0, inokodzera zvigadzirwa zvitete

Base Rubber: VMQ (100 phr)

Flame Retardants:

• Ammonium polyphosphate (APP, phosphorus-nitrogen-based): 12 pr
• Core ye intumescent char kugadzirwa, iine kuenderana kwakanaka nesilicone rubber.
• Aluminium hypophosphite (AHP):8 pr
• Yekuwedzera phosphorus sosi, inoderedza APP hygroscopicity.
• Zinc borate (ZnB): 5 pr
• Synergistic char catalysis uye kudzvinyirirwa kwekudonha.
• Aluminium hydroxide (pasi, 3-20 μm): 15 pr
• Yakaderera-inodhura yekubatsira murazvo retardant, inoderedza APP kurodha.

Additives:

• Vinyl silicone mafuta (3 phr, plasticization)
• Precipitated silica (15 phr, kusimbisa)
• Platinamu yekurapa system (0.1% Pt)

Features:

• Yese murazvo unodzoreredza kurodha ~ 40 phr, inoshanda kune zvitete zvigadzirwa nekuda kweiyo intumescent michina.
• APP inoda kurapwa kwepamusoro (semuenzaniso, silane coupling agent) kudzivirira kutama.

3. High-Loading Aluminium Hydroxide Optimized System (Mutengo-Unoshanda Rudzi)

Target: UL94 V-0, yakakodzera zvigadzirwa zvakakora kana tambo

Base Rubber: VMQ (100 phr)

Flame Retardants:

• Aluminium hydroxide (ATH, makemikari nzira, 1.6-2.3 μm): 50 pr
• Primary flame retardant, endothermic decomposition, diki diki saizi yekupararira kuri nani.
• Aluminium hypophosphite (AHP): 5 pr
• Inovandudza char kugadzira kunyatsoita, inoderedza ATH kurodha.
• Zinc borate (ZnB): 3 pr
• Kudzvinyirirwa kweutsi uye anti-glowing.

Additives:

• Silane coupling agent (KH-550, 1 phr, inovandudza ATH interface)
• Fumed silica (8 phr, kusimbisa)
• Peroxide kurapa (DCP, 1 phr)

Features:

• Yese murazvo unodzoreredza kurodha ~ 58 phr, asi ATH inotonga pakuita mutengo.
• Diki ATH particle size inoderedza tensile simba kurasikirwa.

4. Standalone Aluminium Hypophosphite (AHP) System

Application: UL94 V-1/V-2, kana uko nitrogen masosi isingafadzike (semuenzaniso, kudzivirira MCA kupupa ichikanganisa chitarisiko).

Yakakurudzirwa Kugadzira:

• Base Rubber: VMQ (100 phr)
• Aluminium hypophosphite (AHP): 20–30 pr
• High phosphorus content (40%); 20 phr inopa ~ 8% phosphorus kune yekutanga murazvo retadancy.
• Kune UL94 V-0, wedzera kusvika makumi matatu phr (inogona kukanganisa michina zvivakwa).
• Reinforcing Filler: Silika (10–15 phr, inochengetedza simba)
• Additives: Hydroxyl silicone mafuta (2 phr, processability) + kurapa mumiririri (Diperoxide kana platinamu system).

Features:

• Inovimba neyakapfupikiswa-chikamu chemoto retardancy (char formation), inonatsiridza zvakanyanya LOI asi ine kushoma kudzvinyirira utsi.
• Kutakura kwakanyanya (> 25 phr) kunogona kuomesa zvinhu; kurudzira kuwedzera 3–5 phr ZnB kuti uvandudze char mhando.

5. Aluminium Hypophosphite (AHP) + MCA Blend

Application: UL94 V-0, yakaderera kurodha negasi-phase murazvo wemoto retardant synergy.

Yakakurudzirwa Kugadzira:

• Base Rubber: VMQ (100 phr)
• Aluminium hypophosphite (AHP): 12–15 pr
• Phosphorus sosi yekugadzira char.
• MCA: 8–10 pr
• Nitrogen sosi yePN synergy, inoburitsa inert magasi (semuenzaniso, NH₃) kudzvanya kupararira kwemurazvo.
• Reinforcing Filler: Sirika (10 phr)
• Additives: Silane coupling agent (1 phr, rubatsiro rwekuparadzira) + mumiririri wekurapa.

Features:

• Yese murazvo unodzoreredza kurodha ~ 20–25 phr, yakaderera zvakanyanya pane yakamira AHP.
• MCA inoderedza zvinodiwa neAHP asi inogona kukanganisa kujeka (shandisa nano-MCA kana kujeka kuchidikanwa).

Flame Retardant Formulation Summary

Mazano ekuedzwa

1. Priority Testing: AHP + MCA (15+10 phr). Kana V-0 yawanikwa, zvishoma nezvishoma kuderedza AHP (semuenzaniso, 12+10 phr).
2. Standalone AHP Test: Tanga pa20 phr, kuwedzera ne5 phr kuti uongorore LOI uye UL94, kutarisa michina zvivakwa.
3. Kusvuta Kusvuta: Wedzera 3–5 phr ZnB kune chero chimiro pasina kukanganisa kunonoka kwemoto.
4. Cost Optimization: Batanidza 10-15 phr ATH kudzikisa mutengo, kunyangwe yakazara filler kurodha inowedzera.

Inokurudzirwa Kusanganisa Maitiro

(Kune zvikamu zviviri zvekuwedzera-kurapa silicone rabha)

1. Base Rubber Pre-Kurapwa:

• Rodha silicone rabha (semuenzaniso, 107 gum, vinyl silicone oiri) mumusanganisi wepuraneti, degas pasi pevacuum kana zvichidikanwa.

1. Flame Retardant Addition:

• Powdered flame retardants (semuenzaniso, ATH, MH):
• Wedzera mumabheti, pre-sanganisa ne base rubber (yakaderera-kumhanya kusanganisa, 10-15 min) kudzivirira kusangana.
• Dry pa 80-120 ° C kana hygroscopic.
• Liquid flame retardants (semuenzaniso, phosphates):
• Sanganisa zvakananga nesilicone mafuta, crosslinker, nezvimwewo, pasi pepamusoro shear (20-30 min).

1. Zvimwe Zviwedzere:

• Sequentially wedzera mafirita (semuenzaniso, silica), crosslinker (hydrosilane), catalyst (platinum), uye inhibitors.

1. Homogenization:

• Kuwedzera kunatsa kuparadzira uchishandisa matatu-roll-mill kana high-shear emulsifier (yakakosha kune nano-zvinowedzerwa seCNTs).

1. Degassing & Filtration:

• Vacuum degas (-0.095 MPa, 30 min), sefa yepamusoro-kuchena zvinodiwa.

Pfungwa Huru

• Flame Retardant Sarudzo:
• Halogen-isina retardants (semuenzaniso, ATH) inoda yakanaka particle size (1-5 μm); kurodha zvakanyanya kunokuvadza ma mechanical properties.
• Silicone-based retardants (semuenzaniso, phenyl silicone resins) inopa kuenderana kurinani asi nemutengo wepamusoro.
• Process Control:
• Tembiricha ≤ 60 ° C (inodzivirira platinum catalyst poisoning kana kupora nguva isati yakwana).
• Humidity ≤ 50% RH (inodzivisa maitiro pakati pe hydroxyl silicone mafuta uye retardants yemoto).

Mhedziso

• Mass Production: Pre-mix flame retardants ine base rubber kuitira kushanda zvakanaka.
• High-Kugadzikana Zvinodiwa: Blend panguva yekubatanidza kuderedza njodzi yekuchengetedza.
• Nano-Flame Retardant Systems: Inosungirwa yakakwirira-kuveura kupararira kudzivirira agglomeration.

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