I-PVC Flame Retardant Masterbatch Reference Formulation
Ukudizayina kanye nokwenza kahle kokwakheka kwe-PVC flame retardant masterbatch, okuhlanganisa izinqamuleli zomlilo ezikhona kanye nezingxenye ezibalulekile ze-synergistic, okuqondiswe ku-UL94 V0 flame retardancy (elungiseka ku-V2 ngokunciphisa amanani angeziwe).
I. Isisekelo Sesincomo Sefomula (I-PVC Eqinile)
Ukwakhiwa kwePlastiki Ye-flame Retardant:
| Isakhi | Iyalayisha (wt%) | Incazelo Yomsebenzi |
|---|---|---|
| I-PVC resin (uhlobo lwe-SG-5) | 40-50% | I-matrix material, okungcono izinga lokumunca uwoyela eliphansi |
| I-aluminium hypophosphite | 12-15% | Umthombo we-Acid wokwakheka kwe-char, ucindezela ukukhanya okungemuva |
| I-Zinc borate | 8-10% | Ukucindezelwa kwentuthu okuhlangene, kuhlangana ne-HCl ekwahlukaneni kwe-PVC |
| I-aluminium hydroxide eguquliwe ebusweni | 10-12% | Ukupholisa i-endothermic, kudinga ukunamathela kwe-ejenti yokuhlanganisa ye-silane (izinga lokushisa lokubola. lihambisana nokucubungula kwe-PVC) |
| I-Antimony trioxide (Sb₂O₃) | 3-5% | I-Core synergist, ithuthukisa ukubambezeleka komlilo nge-Cl-Sb synergy |
| I-Zinc molybdate (i-smoke suppressant) | 5-8% | Isengezo esinconyiwe, sehlisa ukuminyana kwentuthu (ukhiye wokuthobela i-DIN 4102) |
| I-Dipentaerythritol (DPE) | 2-3% | I-Charforming aid, ithuthukisa ukulawulwa kokuncibilika kwe-drip |
| I-Thermal stabilizer (inhlanganisela ye-Ca-Zn) | 3-4% | Kubalulekile ukuvimbela ukuwohloka kokushisa ngesikhathi sokucubungula |
| I-Plasticizer (i-DOP noma i-eco-alternative) | 0-8% | Lungisa ubulukhuni (ongakukhetha ku-PVC eqinile) |
| I-Lubricant (i-calcium stearate) | 1-1.5% | Ithuthukisa ukucutshungulwa, ivimbela ukunamathela kwe-roller |
| Usizo lokucubungula (ACR) | 1-2% | Ithuthukisa i-plastification kanye ne-masterbatch dispersion |
II. Izimiso Eziyinhloko Zokuthuthukisa
- I-Flame Retardant Synergy System
- I-Cl-Sb Synergy: I-chlorine engokwemvelo ye-PVC (56%) ehlanganiswe no-3-5% Sb₂O₃ yakha umgoqo we-SbCl₃, ovumela i-gas-phase/condensed-phase-dual-action action flame retadancy.
- Ukucindezelwa Kwentuthu: I-Zinc molybdate + i-zinc borate yehlisa ukuminyana kwentuthu ngo>40% (ASTM E662).
- Ukuthuthukisa I-Char: I-Aluminium hypophosphite + DPE ikhiqiza i-phosphoric ester char exhunywe ngokuphambana ku-200–250°C, inxephezela ukuntula kwe-char kwesigaba sokuqala se-PVC.
- Ukucubungula Ukuzivumelanisa nezimo
- Ukulinganisa Izinga lokushisa: I-Aluminium hypophosphite (ukubola ≥250°C) kanye ne-Al(OH)₃ elungiswe phezulu (izinze ku->200°C) ifanele ukucutshungulwa kwe-PVC (160–190°C).
- Ukuqinisekisa Ukuzinza: Izinza ze-Ca-Zn zivimbela ukuwohloka kwe-resin ekukhululweni kwe-HCl; I-ACR isiza i-plastification kumasistimu wokugcwalisa okuphezulu.
- Ibhalansi yokusebenza
- Isamba sokulayishwa kwe-flame retardant: 35–45%, ukugcinwa kwamandla aqinile ≥80% (okujwayelekile ≥40 MPa ye-PVC eqinile).
- Ngokuvumelana nezimo (i-PVC eguquguqukayo), buyisela i-DOP ngo-8% kawoyela wesoya epoxidized (i-plasticizer ekabili/i-flame retardant).
III. Ukuhlola Nokuqinisekisa Amamethrikhi
Ukuncipha komlilo:
- UL94 V0 (1.6 mm ukujiya)
- I-limiting Oxygen Index (LOI) ≥32%
Ukulawula Intuthu:
- Ukuhlolwa kwegumbi lentuthu le-NBS: Ubuningi bokuminyana kokubona okuthileDs≤150 (imodi evuthayo)
Izici zikaMechanical:
- Amandla aqinile ≥35 MPa (okuqinile), ubude ngesikhathi sekhefu ≥200% (okuguquguqukayo)
Ukuqina Kokushisa:
- I-DMA iqinisekisa ukuthi akukho ukwehla kwe-modulus ku-180°C.
IV. Izindleko & Ukulungiswa Kwemvelo
Enye Izindleko Eziphansi:
- Yehlisa i-zinc molybdate ibe ngu-3%, shintsha kancane i-Al(OH)₃ nge-Mg(OH)₂ (ukhuphuke ufike ku-15%).
Isixazululo Esingenayo I-Antimony:
- Susa i-Sb₂O₃, sebenzisa u-2% we-aluminium diethylphosphinate + 5% nano-kaolin (ukusebenza kahle okuphansi kancane; kudinga ukujiya okungu-3 mm ku-V0).
Okubalulekile Kwentuthu:
- Engeza u-1% we-silicone ehlanganiswe ne-carbon black ukuze uqhubeke unciphisa ukuminyana kwentuthu ngo-15%.
V. Imihlahlandlela Yokucubungula
- Ukulandelana Kokuxuba:
PVC resin → stabilizer + lubricant → flame retardants (low to high density) → plasticizer (spray-added last). - Icubungula amazinga okushisa:
Izindawo zokukhipha izikulufu ezimbili: 160°C (ukuphakela) → 170°C (okuncibilikayo) → 180°C (ukuxuba) → 175°C (ikhanda lokufa). - I-Masterbatch Concentration:
Ncoma ukulayisha okungu-50%; hlanza i-1: 1 nge-PVC emsulwa yokubumba umjovo wokusebenzisa ekugcineni.
Lokhu kwakheka kulinganisa ukubambezeleka kwelangabi eliphezulu, intuthu ephansi, nokuzinza kokucubungula. Ukuhlolwa kwezinga elincane kuyelulekwa ngaphambi kokukalwa, ngokulungiswa okusekelwe kufomu lomkhiqizo (amashidi, izintambo, njll.).
More info., pls contact lucy@taifeng-fr.com
Isikhathi sokuthumela: Jul-08-2025
