I-PVC Flame Retardant Masterbatch Reference Formulation
Uyilo kunye nokwenza ngcono iifomyula ze-PVC ezithintela ilangatye ezisebenzisa i-masterbatch, eziquka izinto ezithintela ilangatye ezikhoyo kunye nezinto eziphambili ezisebenzisanayo, ezijolise kwi-UL94 V0 ethintela ilangatye ezingasetyenziswayo (ezinokulungiswa kwi-V2 ngokunciphisa ubungakanani bezongezo).
I. Ingcebiso yeFomula esisiseko (iPVC eqinileyo)
Ukwenziwa kwePlastiki Flame Retardant:
| Icandelo | Ukulayisha (ubunzima%) | Inkcazo yomsebenzi |
|---|---|---|
| I-resin ye-PVC (uhlobo lwe-SG-5) | 40-50% | Izinto zeMatrix, kungcono ukuba zingafunxwa yioyile kakhulu |
| I-hypophosphite ye-aluminiyam | 12-15% | Umthombo we-asidi wokwakheka kwe-char, uthintela ukukhanya okungasemva |
| I-borate yeZinc | 8-10% | Ukuthintela umsi ngendlela ehambelanayo, kusabela ne-HCl evela ekuboleni kwePVC |
| I-aluminium hydroxide eguqulweyo kumphezulu | 10-12% | Ukupholisa i-endothermic, kufuna i-silane coupling agent coupling coupling (ubushushu bokubola buhambelana nokulungiswa kwePVC) |
| I-Antimony trioxide (Sb₂O₃) | 3-5% | I-synergist eyintloko, iphucula ukulibaziseka kwelangatye ngokusebenzisa i-Cl-Sb synergy |
| I-Zinc molybdate (isithinteli-msi) | 5-8% | Isithako esicetyiswayo, sinciphisa uxinano lomsi (isitshixo sokuthobela i-DIN 4102) |
| I-Dipentaerythritol (i-DPE) | 2-3% | Uncedo lokwakha itshani, luphucula ulawulo lokunyibilika |
| Isiqinisi sobushushu (i-Ca-Zn composite) | 3-4% | Kubalulekile ukuthintela ukonakala kobushushu ngexesha lokucubungula |
| I-Plasticizer (i-DOP okanye i-eco-alternative) | 0-8% | Lungisa ubulukhuni (ukhetho kwi-PVC eqinileyo) |
| Isithambisi (i-calcium stearate) | 1-1.5% | Iphucula ukuqhubekeka kokusebenza, ithintela ukunamathela kwe-roller |
| Uncedo lokucubungula (i-ACR) | 1-2% | Iphucula ukwenziwa kweplastikhi kunye nokusasazwa kwe-masterbatch |
II. Imigaqo-nkqubo yokuphucula izinto eziphambili
- Inkqubo yoBumbano oluBuyisela ilangatye
- I-Cl-Sb Synergy: I-chlorine yendalo ye-PVC (56%) idityaniswe ne-3-5% ye-Sb₂O₃ yenza umqobo we-SbCl₃, ovumela ukuba i-flame retardancy ye-gas-phase/condensed-phase ibe ne-dual-action retardancy.
- Ukuncitshiswa komsi: I-Zinc molybdate + i-zinc borate inciphisa uxinano lomsi nge->40% (ASTM E662).
- Ukuphuculwa kweChar: I-aluminium hypophosphite + DPE ivelisa i-cross-linked phosphoric ester char kwi-200–250°C, nto leyo ehlawula ukungabikho kwechar kwisigaba sokuqala sePVC.
- Ukulungiswa kokuguquguquka
- Ukulinganisa Ubushushu: I-Aluminium hypophosphite (ukubola ≥250°C) kunye ne-Al(OH)₃ (ezinzileyo ukuya kwi->200°C) eguqulweyo kumphezulu ifanela ukucutshungulwa kwe-PVC (160–190°C).
- Uqinisekiso Lozinzo: Iziqinisi zeCa-Zn zithintela ukubola kwe-resin ekukhutshweni kwe-HCl; i-ACR inceda ukufakelwa kwe-plaster kwiinkqubo ezizalisa kakhulu.
- Ibhalansi yokusebenza
- Umthwalo opheleleyo othintela ilangatye: 35–45%, ukugcinwa kwamandla okutsalwa ≥80% (ngokuqhelekileyo ≥40 MPa kwiPVC eqinileyo).
- Ukuze kube lula (i-PVC eguquguqukayo), faka i-8% ye-epoxidized soy oil endaweni ye-DOP (i-plasticizer ephindwe kabini/i-flame retardant).
III. IiMetriki zoVavanyo kunye noQinisekiso
Ukuthintela ilangatye:
- UL94 V0 (ubukhulu obuyi-1.6 mm)
- Isalathisi se-Oxygen esiNciphisayo (i-LOI) ≥32%
Ulawulo lomsi:
- Uvavanyo lwegumbi lomsi le-NBS: Ubuninzi boxinano oluthile lwe-opticalDs≤150 (imo yokutshisa)
Iipropati zoomatshini:
- Amandla okutsalwa ≥35 MPa (eqinileyo), ukunwebeka ngexesha lokuphumla ≥200% (kuyaguquguquka)
Uzinzo lobushushu:
- I-DMA iqinisekisa ukuba akukho kwehla kwe-modulus kwi-180°C.
IV. Uhlengahlengiso lweendleko kunye nokusingqongileyo
Enye indlela engabizi kakhulu:
- Nciphisa i-zinc molybdate ukuya kwi-3%, tshintsha i-Al(OH)₃ nge-Mg(OH)₂ (yongeza iye kwi-15%).
Isisombululo Esingenazo Izinto Ezibangela I-Antimony:
- Susa i-Sb₂O₃, sebenzisa i-2% ye-aluminium diethylphosphinate + 5% ye-nano-kaolin (ukusebenza kakuhle okuphantsi kancinci; kufuna ubukhulu be-3 mm kwi-V0).
Eyona nto iphambili kwi-smoke:
- Yongeza i-1% ye-silicone resin-coated carbon black ukuze unciphise ngakumbi uxinano lomsi nge-15%.
V. Izikhokelo zokuSebenza
- Ulandelelwano lokuxuba:
I-resin ye-PVC → isiqinisi + isithambisi → izinto ezithintela ilangatye (eziphantsi ukuya kweziphezulu) → i-plasticizer (eyongezwe ngokutshiza ekugqibeleni). - Ukucubungula Amaqondo Obushushu:
Iindawo zokukhupha izinto ezinezikrufu ezimbini: 160°C (ukutya) → 170°C (ukunyibilika) → 180°C (ukuxuba) → 175°C (intloko efileyo). - Ugxininiso lweMasterbatch:
Cebisa ukulayisha okungama-50%; xuba i-1:1 nge-PVC eyi-virgin ukuze ugqume i-injection yokusetyenziswa ngokupheleleyo.
Le ndlela ilinganisela ukulibaziseka okukhulu komlilo, umsi omncinci, kunye nozinzo lokucubungula. Kucetyiswa ukuba kwenziwe uvavanyo oluncinci ngaphambi kokuba kulinganiswe, kunye nohlengahlengiso olusekelwe kwifom yemveliso (amaphepha, iintambo, njl.njl.).
More info., pls contact lucy@taifeng-fr.com
Ixesha leposi: Julayi-08-2025
