mawonekedwe ena a mphira wa silicone otengera zoletsa moto zopanda halogen

Nazi mapangidwe asanu a mphira wa silicone opangidwa pogwiritsa ntchito zinthu zoletsa moto zopanda halogen, kuphatikizapo zinthu zoletsa moto zomwe kasitomala amapereka (aluminium hypophosphite, zinc borate, MCA, aluminium hydroxide, ndi ammonium polyphosphate). Cholinga cha mapangidwe awa ndi kuonetsetsa kuti moto umakhala wofooka pamene akuchepetsa kuchuluka kwa zowonjezera kuti achepetse mphamvu ya makina a mphira wa silicone.

1. Dongosolo Loletsa Moto la Phosphorus-Nitrogen Synergistic (Mtundu Wopanga Ma Char Wogwira Ntchito Kwambiri)

Cholinga: UL94 V-0, utsi wochepa, woyenera kugwiritsidwa ntchito kutentha kwapakati mpaka kwakukulu

Mphira Woyambira: Rabala ya silikoni ya Methyl vinyl (VMQ, 100 phr)

Zoletsa Moto:

• Aluminium hypophosphite (AHP, yochokera ku phosphorous): 15 phr
• Amapereka phosphorous yothandiza, amalimbikitsa kupanga ma char, komanso amachepetsa kuyaka kwa gasi.
• Melamine cyanurate (MCA, yochokera ku nayitrogeni): 10 ma phr
• Amagwirizana ndi phosphorous, amatulutsa mpweya wopanda mphamvu, ndipo amachepetsa mpweya.
• Zinc borate (ZnB): 5 phr
• Zimathandizira kupanga ma char, zimaletsa utsi, komanso zimathandizira kukhazikika kwa ma char layer.
• Aluminium hydroxide (ATH, njira ya mankhwala, 1.6–2.3 μm): 20 phr
• Kuwonongeka kwa endothermic, kuchedwa kwa moto wothandizira, komanso kufalikira bwino kwa zinthu.

Zowonjezera:

• Mafuta a hydroxyl silicone (2 phr, amathandiza kuti zinthu zigwire bwino ntchito)
• Silika yofukiza (10 phr, zowonjezera)
• Wothandizira kuchiritsa (Diperoxide, 0.8 phr)

Mawonekedwe:

• Kulemera konse kwa choletsa moto ndi ~ 50 phr, kulinganiza kuletsa moto ndi mphamvu za makina.
• Kugwirizana kwa phosphorous-nitrogen (AHP + MCA) kumachepetsa kuchuluka kwa zinthu zoletsa moto zomwe zimafunika.

2. Dongosolo Loletsa Moto Lolowa M'mimba (Mtundu Wosatsegula Mokwanira)

Cholinga: UL94 V-1/V-0, yoyenera zinthu zopyapyala

Mphira Woyambira: VMQ (maph. 100)

Zoletsa Moto:

• Ammonium polyphosphate (APP, yokhala ndi phosphorous-nayitrogeni): 12 phr
• Pakati pa kapangidwe ka char cha intumescent, ndipo chimagwirizana bwino ndi rabara ya silicone.
• Aluminium hypophosphite (AHP): 8 phr
• Magwero owonjezera a phosphorous, amachepetsa APP hygroscopicity.
• Zinc borate (ZnB): 5 phr
• Kuchepetsa mphamvu ya madontho a madzi (synergistic char catalysis) ndi kuletsa madontho a madzi.
• Aluminium hydroxide (yophwanyika, 3–20 μm): 15 phr
• Choletsa moto chotsika mtengo, chimachepetsa kudzaza kwa APP.

Zowonjezera:

• Mafuta a silikoni a vinyl (3 phr, pulasitiki)
• Silika yonyowa (15 phr, chowonjezera)
• Dongosolo loyeretsera la platinamu (0.1% Pt)

Mawonekedwe:

• Kuchuluka kwa zinthu zoletsa moto zomwe zimayikidwa mkati mwa thupi ndi pafupifupi 40 phr, zomwe zimagwira ntchito bwino pazinthu zoonda chifukwa cha njira yotulutsira moto.
• APP imafuna chithandizo cha pamwamba (monga silane coupling agent) kuti isasunthike.

3. Dongosolo Lowonjezera la Aluminium Hydroxide (Mtundu Wotsika Mtengo)

Cholinga: UL94 V-0, yoyenera zinthu zokhuthala kapena zingwe

Mphira Woyambira: VMQ (maph. 100)

Zoletsa Moto:

• Aluminium hydroxide (ATH, njira ya mankhwala, 1.6–2.3 μm): 50 phr
• Choletsa moto chachikulu, kuwonongeka kwa endothermic, kukula kwa tinthu tating'onoting'ono kuti tifalikire bwino.
• Aluminium hypophosphite (AHP): 5 phr
• Zimathandizira kupanga bwino kwa char, zimachepetsa kukweza kwa ATH.
• Zinc borate (ZnB): 3 ma phr
• Kuletsa utsi ndi kuletsa kuwala.

Zowonjezera:

• Wothandizira kulumikizana ndi silane (KH-550, 1 phr, imasintha mawonekedwe a ATH)
• Silika yofukiza (8 phr, yolimbitsa)
• Kuchiritsa kwa Peroxide (DCP, 1 phr)

Mawonekedwe:

• Kuchuluka kwa zinthu zoletsa moto kumafika pa ~58 phr, koma ATH ndiyo imayang'anira kugwiritsa ntchito bwino ndalama.
• Kukula kwa tinthu tating'onoting'ono ta ATH kumachepetsa kutayika kwa mphamvu yokoka.

4. Dongosolo Lodziyimira Lokha la Aluminium Hypophosphite (AHP)

Kugwiritsa ntchito: UL94 V-1/V-2, kapena komwe magwero a nayitrogeni sakufunidwa (monga, kupewa thovu la MCA lomwe lingakhudze mawonekedwe).

Kapangidwe Koyenera:

• Mphira Woyambira: VMQ (maph. 100)
• Aluminium hypophosphite (AHP): 20–30 ma ph
• Phosphorus yambiri (40%); 20 ph imapereka phosphorous pafupifupi 8% kuti ichepetse moto.
• Pa UL94 V-0, onjezerani kufika pa 30 phr (ingawononge mphamvu zamakina).
• Chodzaza Cholimbitsa: Silika (ma 10–15 ph, imasunga mphamvu)
• Zowonjezera: Mafuta a silikoni a Hydroxyl (2 phr, kuthekera kokonza) + chothandizira kuchiritsa (Diperoxide kapena dongosolo la platinamu).

Mawonekedwe:

• Imagwiritsa ntchito kuchedwa kwa moto kwa gawo lopindika (kupanga kwa char), imakulitsa kwambiri LOI koma imakhala ndi kuletsa pang'ono kwa utsi.
• Kulemera kwambiri (>25 phr) kungapangitse kuti zinthuzo zikhale zolimba; tikukulimbikitsani kuwonjezera ZnB 3-5 phr kuti muwongolere khalidwe la char.

5. Aluminium Hypophosphite (AHP) + MCA Blend

Kugwiritsa ntchito: UL94 V-0, katundu wochepa wokhala ndi mgwirizano woletsa moto wa gawo la gasi.

Kapangidwe Koyenera:

• Mphira Woyambira: VMQ (maph. 100)
• Aluminium hypophosphite (AHP): 12–15 ma ph.
• Phosphorus yomwe imapanga ma char.
• MCA: 8–10 ma ph
• Gwero la nayitrogeni la mgwirizano wa PN, limatulutsa mpweya wosagwira ntchito (monga NH₃) kuti lichepetse kufalikira kwa moto.
• Chodzaza Cholimbitsa: Silika (maph. 10)
• Zowonjezera: Wothandizira kulumikizana ndi silane (1 phr, thandizo lofalikira) + wothandizira kuchiritsa.

Mawonekedwe:

• Kulemera konse kwa lawi loletsa moto ~ 20–25 phr, kotsika kwambiri kuposa AHP yodziyimira payokha.
• MCA imachepetsa kufunika kwa AHP koma ingakhudze pang'ono kuwonekera bwino (gwiritsani ntchito nano-MCA ngati pakufunika kuwonekera bwino).

Chidule cha Kupanga Zoletsa Moto

Malangizo Oyesera

1. Kuyesa Kwambiri: AHP + MCA (15+10 phr). Ngati V-0 yapezeka, chepetsani pang'onopang'ono AHP (monga, 12+10 phr).
2. Mayeso Odziyimira Pawokha a AHPYambani pa 20 phr, onjezerani ndi 5 phr kuti muyese LOI ndi UL94, ndikuyang'anira mawonekedwe a makina.
3. Kuletsa UtsiOnjezani 3–5 phr ZnB ku mtundu uliwonse popanda kuwononga kuchedwa kwa moto.
4. Kukonza Mtengo: Phatikizani 10–15 phr ATH kuti muchepetse mtengo, ngakhale kuti kuchuluka kwa zodzaza kumawonjezeka.

Njira Yosakaniza Yovomerezeka

(Pa rabara ya silicone yokhala ndi magawo awiri yowonjezerapo)

1. Chithandizo cha Mpira Woyambira:

• Ikani rabala ya silikoni (monga 107 chingamu, mafuta a silikoni ya vinyl) mu chosakanizira cha mapulaneti, ndipo perekani mpweya woipa pansi pa vacuum ngati pakufunika.

1. Kuwonjezera Kobwezera Moto:

• Zoletsa moto zopangidwa ndi ufa (monga, ATH, MH):
• Onjezani magulu, sakanizani ndi rabala yoyambira (kusakaniza mwachangu, mphindi 10-15) kuti mupewe kusonkhana.
• Umitsani pa 80–120°C ngati ndi hygroscopic.
• Zinthu zoletsa moto zamadzimadzi (monga ma phosphates):
• Sakanizani mwachindunji ndi mafuta a silicone, crosslinker, ndi zina zotero, pansi pa kutentha kwambiri (mphindi 20-30).

1. Zowonjezera Zina:

• Onjezani motsatizana zinthu zodzaza (monga silica), crosslinker (hydrosilane), catalyst (platinum), ndi zoletsa.

1. Kusasinthika kwa homogenization:

• Yeretsaninso kufalikira pogwiritsa ntchito mphero ya mipiringidzo itatu kapena emulsifier yodula kwambiri (yofunikira kwambiri pazinthu zowonjezera monga CNTs).

1. Kuchotsa mpweya ndi kusefa:

• Chotsukira mpweya chotsukira mpweya (-0.095 MPa, mphindi 30), fyuluta yofunikira pa kuyera kwambiri.

Mfundo Zofunika Kuziganizira

• Kusankha Kobwezera Moto:
• Zinthu zoletsa mpweya zopanda halogen (monga ATH) zimafuna kukula kwa tinthu tating'onoting'ono (1–5 μm); kunyamula kwambiri kumawononga mphamvu za makina.
• Zinthu zotsalira za silicone (monga phenyl silicone resins) zimagwirizana bwino koma pamtengo wokwera.
• Kuwongolera Njira:
• Kutentha ≤ 60°C (kumaletsa poizoni wa platinum catalyst kapena kuuma msanga).
• Chinyezi ≤ 50% RH (chimapewa kuyanjana pakati pa mafuta a hydroxyl silicone ndi zinthu zoletsa moto).

Mapeto

• Kupanga Zinthu Zambiri: Sakanizani zinthu zoletsa moto ndi rabala yoyambira kuti zigwire bwino ntchito.
• Zofunikira Zokhazikika Kwambiri: Sakanizani panthawi yosakaniza kuti muchepetse zoopsa zosungira.
• Machitidwe Oletsa Moto a Nano-Lawi: Kufalikira kofunikira kwambiri kuti zisawonongeke.

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