PVC Flame Retardant Masterbatch Reference Reference Formulation
Kupanga ndi kukhathamiritsa kwa PVC flame retardant masterbatch formulations, kuphatikiza zoletsa moto zomwe zilipo kale ndi zida zazikulu zolumikizirana, kulunjika ku UL94 V0 flame retardancy (yosinthika ku V2 pochepetsa zowonjezera).
Malangizo a Fomula Yoyambira (PVC Yokhazikika)
Mapangidwe a Pulasitiki Wobwezeretsa Moto:
| Chigawo | Kutsegula (wt%) | Kufotokozera Ntchito |
|---|---|---|
| PVC utomoni (SG-5 mtundu) | 40-50% | Zida za matrix, makamaka kalasi yotsika yamafuta |
| Aluminium hypophosphite | 12-15% | Gwero la asidi kuti apange char, amapondereza kuwala |
| Zinc borate | 8-10% | Synergistic utsi kuponderezedwa, amachitira ndi HCl kuchokera PVC kuwonongeka |
| Pamwamba-modified aluminiyamu hydroxide | 10-12% | Kuziziritsa kwa Endothermic, kumafuna zokutira zolumikizira za silane (kuwola kutentha. kumagwirizana ndi kukonza kwa PVC) |
| Antimony trioxide (Sb₂O₃) | 3-5% | Core synergist, imathandizira kuchedwa kwamoto kudzera mu mgwirizano wa Cl-Sb |
| Zinc molybdate (yoletsa utsi) | 5-8% | Zowonjezera zovomerezeka, zimachepetsa kuchuluka kwa utsi (kiyi ya DIN 4102 kutsata) |
| Dipentaerythritol (DPE) | 2-3% | Thandizo lopanga ma Char, limathandizira kuwongolera kusungunuka |
| Thermal stabilizer (gawo la Ca-Zn) | 3-4% | Zofunikira kuti mupewe kuwonongeka kwamafuta panthawi yokonza |
| Plasticizer (DOP kapena eco-alternative) | 0-8% | Sinthani kuuma (posankha PVC yolimba) |
| Lubricant (calcium stearate) | 1-1.5% | Imakulitsa processability, imalepheretsa kumamatira kwa roller |
| Processing Aid (ACR) | 1-2% | Imawonjezera plastification ndi masterbatch dispersion |
II. Mfundo Zazikulu Zokhathamiritsa
- Flame Retardant Synergy System
- Cl-Sb Synergy: PVC's inherent chlorine (56%) yophatikizidwa ndi 3-5% Sb₂O₃ imapanga chotchinga cha SbCl₃, chomwe chimathandiza kuti gas-phase/condensed-phase dual-action flame retardancy.
- Kuletsa Utsi: Zinc molybdate + zinki borate amachepetsa kuchuluka kwa utsi ndi> 40% (ASTM E662).
- Kupititsa patsogolo Char: Aluminium hypophosphite + DPE imapanga phosphoric ester char yolumikizana ndi 200-250 ° C, kubwezera kuchepa kwa char cha PVC koyambirira.
- Processing Adaptability
- Kufanana kwa Kutentha: Aluminiyamu hypophosphite (kuwola ≥250 ° C) ndi Al (OH) ₃ (yokhazikika ku> 200 ° C) imagwirizana ndi PVC processing (160-190 ° C).
- Chitsimikizo Chokhazikika: Zokhazikika za Ca-Zn zimalepheretsa kuwonongeka kwa utomoni kuchokera ku kutulutsidwa kwa HCl; ACR imathandizira plastification m'makina odzaza kwambiri.
- Magwiridwe Antchito
- Kutsegula kwathunthu kwamoto: 35-45%, kusungirako mphamvu zowonongeka ≥80% (yodziwika ≥40 MPa ya PVC yolimba).
- Pakusinthasintha (PVC yosinthika), m'malo mwa DOP ndi 8% yamafuta a soya a epoxidized (pawiri plasticizer/flame retardant).
III. Kuyesa & Kutsimikizira Metrics
Kuchedwa kwa Flame:
- UL94 V0 (1.6 mm makulidwe)
- Kuchepetsa Mlozera wa Oxygen (LOI) ≥32%
Kuletsa Utsi:
- Mayeso a chipinda cha utsi cha NBS: Kuchuluka kwapang'onopang'ono kwapaderaDs≤150 (njira yoyaka)
Katundu Wamakina:
- Kukhazikika kwamphamvu ≥35 MPa (yolimba), elongation panthawi yopuma ≥200% (yosinthika)
Kutentha Kwambiri:
- DMA imatsimikizira kuti palibe kutsika kwa modulus pa 180 ° C.
IV. Kusintha kwa Mtengo & Eco-Friendly
Njira ina Yotsika mtengo:
- Chepetsani zinc molybdate mpaka 3%, pang'ono m'malo Al(OH) ₃ ndi Mg(OH) ₂ (onjezani mpaka 15%).
Njira Yopanda Antimony:
- Chotsani Sb₂O₃, gwiritsani ntchito 2% aluminium diethylphosphinate + 5% nano-kaolin (kutsika pang'ono; kumafuna makulidwe a 3 mm kwa V0).
Kufunika Kwambiri Kusuta:
- Onjezani 1% ya silikoni yokhala ndi utomoni wakuda wakuda kuti muchepetse kuchuluka kwa utsi ndi 15%.
V. Njira Zowongolera
- Kusakaniza Kutsata:
PVC utomoni → stabilizer + lubricant → retardants lawi (otsika mpaka mkulu kachulukidwe) → plasticizer (kupopera-kuwonjezera komaliza). - Kutentha Kwambiri:
Zoni zotulutsa mapasa: 160 ° C (kudyetsa) → 170 ° C (kusungunuka) → 180 ° C (kusakaniza) → 175 ° C (kufa mutu). - Masterbatch Concentration:
Limbikitsani 50% kutsitsa; kuchepetsa 1: 1 ndi namwali PVC kwa mapeto ntchito jekeseni akamaumba.
Kapangidwe kameneka kamayenderana ndi kuchedwa kwambiri kwa lawi, utsi wochepa, ndi kukhazikika kwa ntchito. Mayesero ang'onoang'ono amalangizidwa asanayambe kukulitsa, ndi zosintha malinga ndi mawonekedwe azinthu (mapepala, zingwe, etc.).
More info., pls contact lucy@taifeng-fr.com
Nthawi yotumiza: Jul-08-2025
