mofuta o mong oa referense ea silicone ea rabara e thehiloeng ho li-halogen-free retardants tsa lelakabe

Mona ke meralo e mehlano ea lirabara tsa silicone tse thehiloeng holim'a lintho tse thibelang malakabe tse se nang halogen, tse kenyelletsang li-retardants tsa lelakabe tse fanoeng ke moreki (aluminium hypophosphite, zinc borate, MCA, aluminium hydroxide, le ammonium polyphosphate). Meralo ena e ikemiselitse ho etsa bonnete ba ho lieha ha lelakabe ha e ntse e fokotsa palo ea tlatsetso ho fokotsa tšusumetso ho thepa ea mochini ea rabara ea silicone.

1. Phosphorus-Nitrogen Synergistic Retardant Flame System (Mofuta o Phahameng oa Phatlalatso oa ho Etsa Char-Effective)

Sepheo: UL94 V-0, mosi o tlaase, o loketseng likopo tse mahareng ho isa ho tse phahameng

Rabara ea Motheo: Methyl vinyl silicone rabara (VMQ, 100 phr)

Li-Flame Retardants:

• Aluminium hypophosphite (AHP, e thehiloeng ho phosphorus): 15 phr
• E fana ka mohloli o sebetsang oa phosphorus, e khothalletsa ho thehoa ha char, 'me e thibela ho tuka ha khase.
• Melamine cyanrate (MCA, e thehiloeng ho naetrojene): 10 phr
• E tsamaisana le phosphorus, e ntša likhase tse sa sebetseng, 'me e hlapolla oksijene.
• Zinc borate (ZnB):5 ph
• E matlafatsa sebopeho sa char, e hatella mosi, 'me e matlafatsa botsitso ba char layer.
• Aluminium hydroxide (ATH, mokhoa oa lik'hemik'hale, 1.6-2.3 μm)nako: 20 phr
• Endothermic decomposition, tlatsetso ea lelakabe la ho lieha, le ho ntlafatsoa ha dispersibility.

Tlatsetso:

• Oli ea silicone ea Hydroxyl (2 phr, e ntlafatsa ts'ebetso)
• Silika e chesang (10 phr, matlafatso)
• Moemeli oa pheko (Diperoxide, 0.8 phr)

Likaroloana:

• Kakaretso ea lelakabe la retardant ~ 50 phr, ho leka-lekanya ho lieha ha lelakabe le thepa ea mochini.
• Phosphorus-nitrogen synergy (AHP + MCA) e fokotsa palo e hlokahalang ea li-flame retardants.

2. Sistimi ea ho Lelafatsa Lelakabe la Intumescent (Mofuta o Tlamang o Tlase)

Sepheo: UL94 V-1/V-0, e loketseng lihlahisoa tse tšesaane

Rabara ea Motheo: VMQ (100 phr)

Li-Flame Retardants:

• Ammonium polyphosphate (APP, phosphorus-based based): 12 phr
• Core ea sebopeho sa char ea intumescent, e tsamaellanang hantle le rabara ea silicone.
• Aluminium hypophosphite (AHP):8 ph
• Mohloli oa tlatsetso oa phosphorus, o fokotsa hygroscopicity ea APP.
• Zinc borate (ZnB):5 ph
• Synergistic char catalysis le khatello ea marotholi.
• Aluminium hydroxide (fatše, 3-20 μm): 15 phr
• Sesebelisoa sa theko e tlase se thusang lelakabe, se fokotsa ho kenya APP.

Tlatsetso:

• Oli ea silicone ea vinyl (3 phr, polasetiki)
• Silika e omileng (15 phr, reinforcement)
• Sistimi ea pheko ea Platinum (0.1% Pt)

Likaroloana:

• Kakaretso ea lelakabe la retardant ~ 40 phr, e sebetsang bakeng sa lihlahisoa tse tšesaane ka lebaka la mochine oa intumescent.
• APP e hloka phekolo ea holim'a metsi (mohlala, silane coupling agent) ho thibela ho falla.

3. Aluminium Hydroxide Optimized System e Laolang Phahameng ka ho Fetisisa (Mofuta o Sebeletsang)

Sepheo: UL94 V-0, e loketseng lihlahisoa tse teteaneng kapa likhoele

Rabara ea Motheo: VMQ (100 phr)

Li-Flame Retardants:

• Aluminium hydroxide (ATH, mokhoa oa lik'hemik'hale, 1.6-2.3 μm)nako: 50 phr
• Ntho e ka sehloohong e thibelang lelakabe, endothermic decomposition, boholo ba likaroloana bakeng sa ho hasana ho molemo.
• Aluminium hypophosphite (AHP):5 ph
• E ntlafatsa ts'ebetso ea ho etsa char, e fokotsa phallo ea ATH.
• Zinc borate (ZnB):3 ph
• Khatello ea mosi le anti-glowing.

Tlatsetso:

• Silane coupling agent (KH-550, 1 phr, e ntlafatsa sebopeho sa ATH)
• Silika e chesang (8 phr, matlafatso)
• Phekolo ea peroxide (DCP, 1 phr)

Likaroloana:

• Kakaretso ea ho khutlisa mollo ~ 58 phr, empa ATH e laola ka katleho ea litšenyehelo.
• Boholo ba likaroloana tsa ATH bo fokotsa tahlehelo ea matla.

4. Sisteme ea Standalone Aluminium Hypophosphite (AHP).

Kopo: UL94 V-1/V-2, kapa moo mehloli ea naetrojene e sa rateheng (mohlala, ho qoba ho phophoma ha MCA ho ama ponahalo).

Recommended Formation:

• Rabara ea Motheo: VMQ (100 phr)
• Aluminium hypophosphite (AHP): 20-30 phr
• Tekanyo e phahameng ea phosphorus (40%); 20 phr e fana ka ~ 8% phosphorus bakeng sa ho lieha ha lelakabe la motheo.
• Bakeng sa UL94 V-0, eketsa ho 30 phr (e ka senya thepa ea mochini).
• Filler e matlafatsang: Silika (10–15 phr, e boloka matla)
• Tlatsetso: Oli ea silicone ea Hydroxyl (2 phr, processability) + e phekolang (Diperoxide kapa platinum system).

Likaroloana:

• E its'etleha ho condensed-phase flame retardancy (char formation), e ntlafatsa haholo LOI empa e na le khatello e fokolang ea mosi.
• Ho jara holimo (> 25 phr) ho ka thatafatsa thepa; nkhothaletsa ho eketsa 3–5 phr ZnB ho ntlafatsa boleng ba char.

5. Aluminium Hypophosphite (AHP) + MCA Blend

Kopo: UL94 V-0, thepa e tlaase e nang le synergy ea khase ea khase ea khase.

Recommended Formation:

• Rabara ea Motheo: VMQ (100 phr)
• Aluminium hypophosphite (AHP): 12-15 phr
• Mohloli oa phosphorus bakeng sa ho theha char.
• MCA: 8-10 phr
• Mohloli oa naetrojene bakeng sa synergy ea PN, o ntša likhase tse sa sebetseng (mohlala, NH₃) ho thibela ho ata ha lelakabe.
• Filler e matlafatsang: Silika (10 phr)
• Tlatsetso: Silane coupling agent (1 phr, dispersion aid) + pheko.

Likaroloana:

• Kakaretso ea ho palamisa mollo ~ 20–25 phr, e tlase haholo ho feta AHP e ikemetseng.
• MCA e fokotsa tlhoko ea AHP empa e ka ama ponahalo ea pepenene hanyane (sebelisa nano-MCA haeba ho hlokahala ho hlaka).

Kakaretso ea Tlhahiso ea Flame Retardant

Likhothaletso tsa Teko

1. Teko ea Bohlokoa: AHP + MCA (15+10 phr). Haeba V-0 e finyelloa, butle-butle fokotsa AHP (mohlala, 12+10 phr).
2. Teko e ikemetseng ea AHP: Qala ho 20 phr, eketsa ka 5 phr ho lekola LOI le UL94, ho lekola thepa ea mochini.
3. Khatello ea Mosi: Eketsa 3–5 phr ZnB ho moetso ofe kapa ofe ntle le ho senya ho lieha ha lelakabe.
4. Ntlafatso ea Litšenyehelo: Kenyelletsa 10–15 phr ATH ho fokotsa litšenyehelo, leha ho eketseha ha li-filler ho eketseha.

Mokhoa o khothalelitsoeng oa ho kopanya

(Bakeng sa rabara ea silicone e nang le likarolo tse peli)

1. Phekolo ea Pele ea Rubber ea Base:

• Laela rabara ea silicone (mohlala, 107 gum, oli ea silicone ea vinyl) ka har'a motsoako oa polanete, degas tlas'a vacuum ha ho hlokahala.

1. Keketso e Lekang Lelakabe:

• Lintho tse thibelang lelakabe tse phofshoang (mohlala, ATH, MH):
• Eketsa ka li-batches, pele u kopanya le rabara ea motheo (ho kopanya ka lebelo le tlaase, 10-15 min) ho qoba agglomeration.
• Omisa ho 80-120 ° C haeba ho na le hygroscopic.
• Li-retardants tsa lelakabe la metsi (mohlala, phosphates):
• Kopanya ka ho toba le oli ea silicone, crosslinker, joalo-joalo, tlas'a ho kuta e phahameng (20-30 min).

1. Li-additives tse ling:

• Kenya li-filler ka tatellano (mohlala, silika), crosslinker (hydrosilane), catalyst (platinum), le inhibitors.

1. Homogenization:

• Ntlafatsa ho hasana ho eketsehileng ka ho sebelisa leloala la li-roll tse tharo kapa emulsifier ea ho kuta haholo (e bohlokoa bakeng sa li-additives tsa nano joaloka CNTs).

1. Ho hloekisa le ho hloekisa:

• Vacuum degas (-0.095 MPa, 30 min), sefa bakeng sa litlhoko tsa bohloeki bo phahameng.

Lintlha Tse ka Sehloohong

• Lelakabe Retardant Khetho:
• Li-retardants tse se nang Halogen (mohlala, ATH) li hloka boholo bo botle ba likaroloana (1-5 μm); ho jara ho feteletseng ho senya thepa ea mochini.
• Li-retardants tse thehiloeng ho silicone (mohlala, li-resin tsa phenyl silicone) li fana ka tšebelisano e ntle empa ka litšenyehelo tse phahameng.
• Taolo ea Ts'ebetso:
• Mocheso ≤ 60 ° C (e thibela chefo ea platinum kapa ho phekola pele ho nako).
• Mongobo ≤ 50% RH (e qoba ho itšoara pakeng tsa oli ea silicone ea hydroxyl le li-flame retardants).

Qetello

• Tlhahiso ea 'Misa: Li-retardants tsa lelakabe tsa pele li kopanya le rabara ea motheo bakeng sa katleho.
• Litlhoko tse phahameng tsa botsitso: Kopanya nakong ea ho kopanya ho fokotsa likotsi tsa polokelo.
• Nano-Flame Retardant Systems: E tlamang e phahameng-shear hasane ho thibela agglomeration.

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