ʻO kekahi hoʻokumu ʻana i ka ʻili silicone e pili ana i nā mea hoʻopaneʻe ahi halogen

Eia ʻelima mau hoʻolālā hoʻolālā hoʻoheheʻe silicone ma muli o ka halogen-free flame retardants, e hoʻopili ana i nā mea pale ahi i hāʻawi ʻia e ka mea kūʻai (aluminum hypophosphite, zinc borate, MCA, aluminum hydroxide, a me ammonium polyphosphate). Ke manaʻo nei kēia mau hoʻolālā e hōʻoia i ka hoʻopaʻa ʻana o ka lapalapa ʻoiai e hōʻemi ana i ka nui o nā mea hoʻohui e hōʻemi i ka hopena i nā waiwai mechanical o ka silicone rubber.

1. Phosphorus-Nitrogen Synergistic Flame Retardant System (High-Efficiency Char-Forming Type)

Kuhikuhi: UL94 V-0, uahi haʻahaʻa, kūpono no nā noi wela waena a kiʻekiʻe

Ka Rupa Kumu: Methyl vinyl silicone rubber (VMQ, 100 phr)

Nā mea hoʻopaʻa ahi:

• Aluminum hypophosphite (AHP, phosphorus-based): 15 phr
• Hāʻawi i kahi kumu phosphorus maikaʻi, paipai i ka hoʻokumu ʻana i ka char, a hoʻopaʻa i ka hoʻopau ʻana i ke kinoea.
• Melamine cyanurate (MCA, hoʻokumu i ka nitrogen): 10 phr
• Hoʻohui pū me ka phosphorus, hoʻokuʻu i nā kinoea inert, a hoʻoheheʻe i ka oxygen.
• Zinc borate (ZnB): 5 phr
• Hoʻopili i ka hoʻokumu ʻana o ka char, hoʻopaʻa i ka uahi, a hoʻonui i ka paʻa o ka char layer.
• Aluminum hydroxide (ATH, hana kemika, 1.6–2.3 μm): 20 phr
• Endothermic decomposition, auxiliary flame retardancy, a hoʻomaikaʻi i ka dispersibility.

Nā mea hoʻohui:

• ʻO ka aila silicone hydroxyl (2 phr, hoʻomaikaʻi i ka hana ʻana)
• Silica fumed (10 phr, hoʻoikaika)
• Mea ho'ōla (Diperoxide, 0.8 phr)

Nā hiʻohiʻona:

• ʻO ka nui o ka hoʻouka ʻana i ka lapalapa ahi ~50 phr, ke kaulike ʻana i ka hoʻopaneʻe ahi a me nā waiwai mechanical.
• Hoʻemi ka Phosphorus-nitrogen synergy (AHP + MCA) i ka nui o nā mea hoʻopaʻa ahi.

2. Pūnaehana Hoʻopaʻa ʻAla Intumescent (Ke ʻano hoʻouka haʻahaʻa)

Kuhikuhi: UL94 V-1/V-0, kūpono no nā huahana lahilahi

Ka Rupa Kumu: VMQ (100 phr)

Nā mea hoʻopaʻa ahi:

• Ammonium polyphosphate (APP, phosphorus-nitrogen-based): 12 phr
• ʻO ke kumu o ka hoʻokumu ʻana o ka intumescent char, me ka hoʻohālikelike maikaʻi ʻana me ka lāʻau silicone.
• Aluminum hypophosphite (AHP): 8 phr
• Hoʻohui kumu phosphorus, hōʻemi i ka hygroscopicity APP.
• Zinc borate (ZnB): 5 phr
• Synergistic char catalysis a me ka hoʻomaloʻo ʻana.
• Aluminum hydroxide (honua, 3-20 μm): 15 phr
• ʻO ke kumu kūʻai haʻahaʻa kōkua ahi retardant, hoʻemi i ka hoʻouka APP.

Nā mea hoʻohui:

• ʻO ka ʻaila silicone Vinyl (3 phr, plasticization)
• ʻO ka silica hoʻoheheʻe ʻia (15 phr, hoʻoikaika)
• Pūnaehana hoʻoponopono Platinum (0.1% Pt)

Nā hiʻohiʻona:

• Ka nui o ka hoʻouka ʻana i ka lapalapa ahi ~40 phr, kūpono no nā huahana lahilahi ma muli o ka hana intumescent.
• Pono ʻo APP i ka mālama ʻana i ka ʻili (e laʻa, ka mea hoʻohui silane) e pale ai i ka neʻe ʻana.

3. High-Loading Aluminum Hydroxide Optimized System (Cost-Effective Type)

Kuhikuhi: UL94 V-0, kūpono no nā huahana mānoanoa a i ʻole nā ​​kaula

Ka Rupa Kumu: VMQ (100 phr)

Nā mea hoʻopaʻa ahi:

• Aluminum hydroxide (ATH, hana kemika, 1.6–2.3 μm): 50 ph
• ʻO ka pale ahi mua, ka decomposition endothermic, ka liʻiliʻi liʻiliʻi no ka hoʻopuehu maikaʻi.
• Aluminum hypophosphite (AHP): 5 phr
• Hoʻonui i ka pono o ka hoʻokumu ʻana i ka char, hoʻemi i ka hoʻouka ʻana o ATH.
• Zinc borate (ZnB): 3 phr
• Kāohi uahi a anti-glowing.

Nā mea hoʻohui:

• ʻO ka mea hoʻohui hoʻohui Silane (KH-550, 1 phr, hoʻomaikaʻi i ka interface ATH)
• Silica fumed (8 phr, hoʻoikaika)
• ʻO ka mālama ʻana i ka peroxide (DCP, 1 phr)

Nā hiʻohiʻona:

• ʻO ka nui o ka hoʻouka ʻana i ka lapalapa ahi ~ 58 phr, akā ʻoi aku ka ATH no ka maikaʻi o ke kumukūʻai.
• ʻO ka liʻiliʻi liʻiliʻi ʻāpana ATH e hōʻemi i ka nalowale o ka ikaika tensile.

4. Pūnaehana Aluminum Hypophosphite (AHP).

Palapala noi: UL94 V-1/V-2, a i ʻole nā ​​kumu nitrogen i makemake ʻole ʻia (e laʻa, pale ʻana i ka huʻa MCA e pili ana i ka helehelena).

Manaʻo ʻia ka hoʻohua:

• Ka Rupa Kumu: VMQ (100 phr)
• Aluminum hypophosphite (AHP): 20–30 ph
• Loaʻa ka phosphorus kiʻekiʻe (40%); Hāʻawi ʻo 20 phr i ka ~ 8% phosphorus no ka hoʻihoʻi ʻana i ke ahi.
• No ka UL94 V-0, e hoʻonui i ka 30 phr (hiki ke hōʻino i nā waiwai mechanical).
• Hoʻopiha piha: Silica (10–15 phr, mālama i ka ikaika)
• Nā mea hoʻohui: Hydroxyl silicone aila (2 phr, processability) + curing agent (Diperoxide or platinum system).

Nā hiʻohiʻona:

• Ke hilinaʻi nei i ka condensed-phase flame retardancy (char formation), hoʻomaikaʻi nui i ka LOI akā ua kaupalena ʻia ka hoʻopau ʻana i ka uahi.
• ʻO ka hoʻouka kiʻekiʻe (> 25 phr) hiki ke paʻakikī i ka mea; paipai ʻia e hoʻohui i ka 3-5 phr ZnB e hoʻomaikaʻi i ka maikaʻi o ka char.

5. Aluminum Hypophosphite (AHP) + MCA Blend

Palapala noi: UL94 V-0, hoʻouka haʻahaʻa me ke kinoea-phase retardant synergy.

Manaʻo ʻia ka hoʻohua:

• Ka Rupa Kumu: VMQ (100 phr)
• Aluminum hypophosphite (AHP): 12–15 ph
• ʻO ke kumu o ka Phosphorus no ka hoʻokumu ʻana i ka char.
• MCA: 8–10 ph
• ʻO ke kumu Nitrogen no PN synergy, hoʻokuʻu i nā kinoea inert (e laʻa, NH₃) e hoʻopau i ka hoʻolaha ʻana o ka lapalapa.
• Hoʻopiha piha: Silika (10 phr)
• Nā mea hoʻohui: Mea hoʻohui Silane (1 phr, kōkua hoʻopuehu) + mea ho'ōla.

Nā hiʻohiʻona:

• ʻO ka nui o ka hoʻouka ʻana i ka lapalapa ahi ~20-25 phr, haʻahaʻa loa ma mua o ka AHP kūʻokoʻa.
• Hoʻemi ʻo MCA i ke koi AHP akā hiki ke hoʻololi iki i ka ʻike (e hoʻohana i ka nano-MCA inā makemake ʻia ka mālamalama).

Hōʻuluʻulu manaʻo hoʻomāliʻi ahi

Manaʻo hoʻokolohua

1. ʻO ka ho'āʻo mua: AHP + MCA (15+10 phr). Inā loaʻa ka V-0, e hoʻemi mālie i ka AHP (e laʻa, 12+10 phr).
2. Ho'āʻo AHP kūʻokoʻa: E hoʻomaka i ka 20 phr, hoʻonui i ka 5 phr no ka loiloi LOI a me UL94, ka nānā ʻana i nā waiwai mechanical.
3. Kāohi uahi: E hoʻohui i ka 3-5 phr ZnB i kekahi hana me ka ʻole o ka hoʻopaʻa ʻana i ke ahi.
4. Hoʻonui Kūʻai: Hoʻohui i ka 10-15 phr ATH e hōʻemi i ke kumukūʻai, ʻoiai ke piʻi nei ka hoʻouka ʻana o ka hoʻopiha piha.

Manaʻo ʻia ka hui ʻana

(No ʻelua ʻāpana hoʻohui-hoʻōla silicone rubber)

1. Lapaʻau mua o ka Rubber Base:

• E hoʻouka i ka lāʻau silikoni (e laʻa, 107 gum, vinyl silicone oil) i loko o kahi hui honua, degas ma lalo o ka momi inā pono.

1. Pākuʻi Pākuʻi:

• Nā mea hoʻopaʻa ahi paʻa (e laʻa, ATH, MH):
• E hoʻohui i nā pūʻulu, e hui mua me ka ʻōpala kumu (ka hui haʻahaʻa haʻahaʻa, 10-15 min) e pale i ka hoʻohui ʻana.
• E maloʻo ma 80-120°C inā hygroscopic.
• ʻO nā mea e pale ai i ka lapalapa ahi (e laʻa, phosphates):
• E hui pono me ka aila silicone, crosslinker, etc., ma lalo o ka ʻoki kiʻekiʻe (20-30 min).

1. Nā mea hoʻohui ʻē aʻe:

• E hoʻohui pū i nā mea hoʻopihapiha (e laʻa, silica), crosslinker (hydrosilane), catalyst (platinum), a me nā mea paʻi.

1. Homogenization:

• E hoʻomaʻemaʻe hou i ka hoʻopuehu ʻana me ka wili wili ʻekolu a i ʻole emulsifier kiʻekiʻe-shear (koʻikoʻi no nā nano-additives e like me CNTs).

1. Degassing & kānana:

• Vacuum degas (-0.095 MPa, 30 min), kānana no nā koi hoʻomaʻemaʻe kiʻekiʻe.

Nā Manaʻo Nui

• Koho Puhi Puhi:
• Pono nā mea hoʻopaneʻe halogen-ʻole (e laʻa, ATH) i ka nui o nā ʻāpana liʻiliʻi (1-5 μm); ʻO ka hoʻouka nui ʻana e hōʻino i nā waiwai mechanical.
• Hāʻawi nā mea hoʻopaneʻe silicone (e laʻa, phenyl silicone resins) i ka hoʻohālikelike ʻoi aku ka maikaʻi akā ma ke kumu kūʻai kiʻekiʻe.
• Ka Mana Mana:
• ʻO ka mahana ≤ 60 ° C (pale i ka platinum catalyst poisoning a i ʻole ka hoʻōla mua ʻana).
• Humidity ≤ 50% RH (ʻalo i nā hopena ma waena o ka aila silicone hydroxyl a me nā mea pale ahi).

Ka hopena

• Hana Nui: E hui mua i nā mea pale ahi me ka lāʻau kumu no ka pono.
• Nā Koina Paʻa Kiʻekiʻe: Hoʻohui i ka wā e hoʻohui ʻia e hōʻemi i nā pilikia mālama.
• Nano-Flame Retardant Systems: Pono e hoʻopuehu kiʻekiʻe e pale i ka hoʻohuihui.

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