PVC Flame Retardant Masterbatch Reference Formulation
Kupanga ndi kukonza bwino mapangidwe a PVC flame retardant masterbatch, kuphatikiza ma flame retardant omwe alipo kale ndi zigawo zazikulu zogwirizana, zomwe zimayang'ana ku UL94 V0 flame retardancy (yosinthika ku V2 pochepetsa kuchuluka kwa zowonjezera).
I. Malangizo a Maziko a Fomula (PVC Yolimba)
Chiphunzitso Choletsa Moto cha Pulasitiki:
| Chigawo | Kutsegula (kuchuluka%) | Kufotokozera kwa Ntchito |
|---|---|---|
| Utomoni wa PVC (mtundu wa SG-5) | 40-50% | Zinthu za matrix, makamaka mafuta ochepa omwe amayamwa |
| Hypophosphite ya aluminiyamu | 12-15% | Gwero la asidi lopangira ma char, limaletsa kuwala kwa dzuwa |
| Zinc borate | 8-10% | Kuletsa utsi mogwirizana, kumayanjana ndi HCl kuchokera ku kuwonongeka kwa PVC |
| Hydroxide yosinthidwa pamwamba pa aluminiyamu | 10-12% | Kuziziritsa kwa endothermic, kumafuna chophimba cha silane coupling agent (kutentha kwa kuwonongeka kumafanana ndi kukonzedwa kwa PVC) |
| Antimoni trioxide (Sb₂O₃) | 3-5% | Kuphatikizana kwapakati, kumawonjezera kuchedwa kwa moto kudzera mu mgwirizano wa Cl-Sb |
| Zinc molybdate (choletsa utsi) | 5-8% | Chowonjezera chomwe chimalimbikitsidwa, chimachepetsa kuchuluka kwa utsi (chinsinsi chogwirizana ndi DIN 4102) |
| Dipentaerythritol (DPE) | 2-3% | Chithandizo chopanga char, chimawongolera kusungunuka kwa madzi |
| Chokhazikika cha kutentha (chophatikiza cha Ca-Zn) | 3-4% | Chofunika kwambiri kuti tipewe kuwonongeka kwa kutentha panthawi yokonza |
| Chopangira pulasitiki (DOP kapena chosinthira zachilengedwe) | 0-8% | Sinthani kuuma (ngati mukufuna PVC yolimba) |
| Mafuta odzola (calcium stearate) | 1-1.5% | Zimathandiza kuti zinthu ziyende bwino, zimalepheretsa kuti roller imamatire |
| Chithandizo chothandizira kukonza (ACR) | 1-2% | Zimathandizira kupangika kwa pulasitiki ndi kufalikira kwa masterbatch |
II. Mfundo Zofunikira Zokonzera Bwino
- Dongosolo Logwirizanitsa Moto Lobweza Moto
- Cl-Sb Synergy: Klorini wopangidwa ndi PVC (56%) wophatikizidwa ndi 3-5% Sb₂O₃ amapanga chotchinga cha SbCl₃, chomwe chimalola kuti lawi lizilephera kugwira ntchito bwino pa nthawi ya gasi/yozizira.
- Kuletsa Utsi: Zinc molybdate + zinc borate imachepetsa kuchuluka kwa utsi ndi >40% (ASTM E662).
- Kukulitsa Mtengo: Aluminium hypophosphite + DPE imapanga cross-linked phosphoric ester char pa 200–250°C, zomwe zimapangitsa kuti PVC isagwire bwino ntchito.
- Kusinthasintha kwa Kusintha
- Kufananiza Kutentha: Aluminium hypophosphite (kuwola ≥250°C) ndi Al(OH)₃ yosinthidwa pamwamba (yokhazikika mpaka >200°C) ikugwirizana ndi kukonzedwa kwa PVC (160–190°C).
- Chitsimikizo cha Kukhazikika: Zokhazikika za Ca-Zn zimaletsa kuwonongeka kwa utomoni kuchokera ku kutulutsidwa kwa HCl; ACR imathandiza kupangidwa kwa pulasitiki m'makina odzaza kwambiri.
- Kulinganiza Magwiridwe Antchito
- Kulemera konse kwa lawi loletsa moto: 35–45%, mphamvu yogwira ntchito yosunga ≥80% (yachizolowezi ≥40 MPa ya PVC yolimba).
- Kuti musinthe mtundu wa chinthucho kukhala chofewa (PVC yosinthasintha), sinthani DOP ndi mafuta a soya okwana 8% (opangidwa ndi pulasitiki/oletsa moto).
III. Miyeso Yoyesera & Kutsimikizira
Kubwerera kwa Moto:
- UL94 V0 (kukhuthala kwa 1.6 mm)
- Kuchepetsa Oxygen Index (LOI) ≥32%
Kuletsa Utsi:
- Kuyesa kwa chipinda cha utsi cha NBS: Kuchuluka kwa kuwala kokwaniraDs≤150 (njira yoyatsira moto)
Katundu wa Makina:
- Mphamvu yokoka ≥35 MPa (yolimba), kutalika kwake panthawi yopuma ≥200% (yosinthasintha)
Kukhazikika kwa Kutentha:
- DMA imatsimikizira kuti palibe kutsika kwa modulus pa 180°C.
IV. Kusintha kwa Mtengo ndi Zosamalira Chilengedwe
Njira ina Yotsika Mtengo:
- Chepetsani zinc molybdate kufika pa 3%, sinthani pang'ono Al(OH)₃ ndi Mg(OH)₂ (onjezerani kufika pa 15%).
Yankho Lopanda Antimoni:
- Chotsani Sb₂O₃, gwiritsani ntchito 2% aluminiyamu diethylphosphinate + 5% nano-kaolin (ntchito yotsika pang'ono; imafuna makulidwe a 3 mm pa V0).
Chofunika Kwambiri pa Utsi:
- Onjezani 1% ya silicone resin-coated carbon black kuti muchepetse utsi wambiri ndi 15%.
V. Malangizo Oyendetsera Ntchito
- Kusakaniza Mndandanda:
Utomoni wa PVC → chokhazikika + mafuta odzola → zoletsa moto (zochepa mpaka zazikulu) → chosungunula (chomaliza chowonjezeredwa ndi spray). - Kutentha Kogwiritsidwa Ntchito:
Malo otulutsira zinthu pogwiritsa ntchito screw ziwiri: 160°C (kudyetsa) → 170°C (kusungunuka) → 180°C (kusakaniza) → 175°C (mutu wofewa). - Kukhazikika kwa Masterbatch:
Ndibwino kuti mugwiritse ntchito 50% pa katundu; sakanizani 1:1 ndi PVC yosakanizidwa kuti mugwiritse ntchito popangira jakisoni.
Kapangidwe kameneka kamathandiza kuti lawi lisamachedwe kwambiri, utsi wochepa, komanso kukhazikika kwa ntchito. Kuyesa pang'ono kumalangizidwa musanayese, ndi kusintha kutengera mawonekedwe a chinthucho (mapepala, zingwe, ndi zina zotero).
More info., pls contact lucy@taifeng-fr.com
Nthawi yotumizira: Julayi-08-2025
