PVC Flame Retardant Masterbatch Siv Cov Qauv Siv
Tsim thiab ua kom zoo dua ntawm cov qauv tsim hluav taws kub PVC masterbatch, suav nrog cov hluav taws kub uas twb muaj lawm thiab cov khoom sib txuas tseem ceeb, tsom mus rau UL94 V0 hluav taws kub (kho tau rau V2 los ntawm kev txo cov khoom ntxiv).
I. Cov Lus Qhia Txog Cov Qauv Tseem Ceeb (PVC Rigid)
Cov Tshuaj Tiv Thaiv Hluav Taws Yas:
| Cheebtsam | Thauj khoom (wt%) | Kev piav qhia txog kev ua haujlwm |
|---|---|---|
| PVC cob (SG-5 hom) | 40-50% | Cov khoom siv matrix, zoo dua yog qib nqus roj tsawg |
| Aluminium hypophosphite | 12-15% | Qhov chaw ua kua qaub rau kev tsim cov char, tiv thaiv kev tsaus ntuj |
| Zinc borate | 8-10% | Kev tswj hwm pa luam yeeb synergistic, reacts nrog HCl los ntawm PVC decomposition |
| Aluminium hydroxide hloov kho qhov chaw | 10-12% | Kev txias Endothermic, xav tau silane coupling agent txheej (qhov kub ntawm kev lwj sib xws nrog PVC ua tiav) |
| Antimony trioxide (Sb₂O₃) | 3-5% | Core synergist, ua kom cov nplaim taws retardancy ntawm Cl-Sb synergy |
| Zinc molybdate (tshuaj tua pa luam yeeb) | 5-8% | Cov tshuaj ntxiv uas pom zoo, txo cov pa luam yeeb (qhov tseem ceeb rau kev ua raws li DIN 4102) |
| Dipentaerythritol (DPE) | 2-3% | Kev pab tsim cov char, txhim kho kev tswj hwm yaj-drip |
| Thermal stabilizer (Ca-Zn composite) | 3-4% | Qhov tseem ceeb kom tiv thaiv kev puas tsuaj ntawm cov cua sov thaum lub sijhawm ua haujlwm |
| Plasticizer (DOP lossis eco-lwm txoj) | 0-8% | Kho qhov nyuaj (xaiv tau rau PVC tawv) |
| Cov roj nplua nyeem (calcium stearate) | 1-1.5% | Txhim kho kev ua haujlwm tau zoo, tiv thaiv cov menyuam kom tsis txhob lo |
| Kev pab ua haujlwm (ACR) | 1-2% | Txhim kho kev plastification thiab masterbatch dispersion |
II. Cov Ntsiab Cai Tseem Ceeb ntawm Kev Txhim Kho Kom Zoo
- Lub Tshuab Hluav Taws Xob Tiv Thaiv Kev Sib Txuas Lus
- Cl-Sb Kev Sib Koom Tes: PVC cov chlorine uas muaj nyob hauv (56%) ua ke nrog 3-5% Sb₂O₃ tsim ib qho kev thaiv SbCl₃, ua rau muaj kev tiv thaiv hluav taws kub ob theem ntawm cov pa roj / cov dej noo.
- Kev Tiv Thaiv Pa Luam Yeeb: Zinc molybdate + zinc borate txo cov pa luam yeeb ntau dua 40% (ASTM E662).
- Kev Txhim Kho Char: Aluminium hypophosphite + DPE tsim cov phosphoric ester char uas txuas nrog ntawm 200–250 ° C, them rau PVC qhov tsis txaus char theem thaum ntxov.
- Kev Hloov Kho Tau
- Kev Sib Tw Kub: Aluminium hypophosphite (decomposition ≥250°C) thiab Al(OH)₃ hloov kho qhov chaw (ruaj khov rau >200°C) haum rau PVC ua (160–190°C).
- Kev Ruaj Ntseg Ruaj Khov: Ca-Zn stabilizers tiv thaiv kev puas tsuaj ntawm cov resin los ntawm HCl tso tawm; ACR pab plastification hauv cov kab ke siab.
- Kev Ua Tau Zoo Sib Npaug
- Tag nrho cov khoom tiv taus hluav taws: 35–45%, lub zog tensile khaws cia ≥80% (feem ntau ≥40 MPa rau PVC ruaj khov).
- Rau qhov yooj ywm (PVC yooj ywm), hloov DOP nrog 8% roj taum pauv epoxidized (ob chav plasticizer / nplaim taws retardant).
III. Kev Ntsuas thiab Kev Pom Zoo
Kev Tiv Thaiv Hluav Taws Kub:
- UL94 V0 (tuab 1.6 hli)
- Kev Txwv Cov Pa oxygen Index (LOI) ≥32%
Kev Tswj Pa Luam Yeeb:
- Kev sim chav haus luam yeeb NBS: Qhov ceev tshaj plaws ntawm qhov muag pom tseebDs≤150 (hom hluav taws)
Cov Khoom Siv Kho Tshuab:
- Lub zog tensile ≥35 MPa (rigid), elongation thaum tawg ≥200% (yoog tau)
Kev Ruaj Ntseg Thermal:
- DMA lees paub tias tsis muaj qhov poob qis ntawm 180 ° C.
IV. Kev Kho Tus Nqi & Kev Kho Kom Zoo Rau Ib puag ncig
Lwm Txoj Kev Pheej Yig:
- Txo cov zinc molybdate rau 3%, hloov ib feem Al(OH)₃ nrog Mg(OH)₂ (nce mus txog 15%).
Kev daws teeb meem tsis muaj antimony:
- Tshem tawm Sb₂O₃, siv 2% txhuas diethylphosphinate + 5% nano-kaolin (ua haujlwm qis dua me ntsis; xav tau 3 hli tuab rau V0).
Kev Haus Luam Yeeb Tseem Ceeb:
- Ntxiv 1% silicone resin-coated carbon black kom txo cov pa luam yeeb ntau ntxiv los ntawm 15%.
V. Cov Lus Qhia Txog Kev Ua Haujlwm
- Kev Sib Tov Sib Xyaws:
PVC resin → stabilizer + roj nplua nyeem → cov tshuaj tiv thaiv hluav taws (qis mus rau qhov ceev ceev) → plasticizer (ntxiv tshuaj tsuag zaum kawg). - Kub Ua Haujlwm:
Cov cheeb tsam extruder ntxaib-ntsia hlau: 160 ° C (pub mis) → 170 ° C (yaj) → 180 ° C (sib tov) → 175 ° C (lub taub hau tuag). - Masterbatch Concentration:
Pom zoo kom muab 50% tso rau hauv; dilute 1: 1 nrog PVC tshiab rau kev txhaj tshuaj molding kawg.
Cov mis no sib npaug zos nrog kev tiv taus hluav taws kub, pa luam yeeb tsawg, thiab kev ruaj khov ntawm kev ua khoom. Kev sim me me raug qhia ua ntej ntsuas, nrog kev hloov kho raws li cov duab ntawm cov khoom (cov ntawv, cov xov hlau, thiab lwm yam).
More info., pls contact lucy@taifeng-fr.com
Lub sijhawm tshaj tawm: Lub Xya Hli-08-2025
