Polypropylene (PP) UL94 V0 thiab V2 Flame Retardant Formulations

Polypropylene (PP) UL94 V0 thiab V2 Flame Retardant Formulations

Polypropylene (PP) yog siv dav siv thermoplastic polymer, tab sis nws cov flammability txwv nws daim ntawv thov hauv qee thaj chaw. Txhawm rau ua kom tau raws li qhov xav tau ntawm cov nplaim hluav taws sib txawv (xws li UL94 V0 thiab V2 qib), cov nplaim hluav taws xob tuaj yeem siv los txhim kho cov nplaim taws ntawm PP. Hauv qab no yog cov ncauj lus kom ntxaws qhia txog cov nplaim hluav taws-retardant PP formulations rau UL94 V0 thiab V2 qib, suav nrog kev xaiv nplaim hluav taws, kev tsim qauv, kev ua haujlwm, thiab kev sim ua haujlwm.

1. Taw qhia rau UL94 Nplaim Retardancy Ratings

UL94 yog tus qauv flammability tsim los ntawm Underwriters Laboratories (UL) los soj ntsuam cov nplaim taws ntawm cov ntaub ntawv yas. Cov nplaim retardancy feem ntau suav nrog:

• V0: Cov qib nplaim hluav taws kub siab tshaj plaws, xav tau cov qauv rau kev tua tus kheej hauv 10 vib nas this hauv qhov ntsuas hluav taws xob ntsug yam tsis muaj hluav taws xob paj rwb nrog dripping.
• V2: Cov nplaim hluav taws qis qis, tso cai rau cov qauv tua tus kheej hauv 30 vib nas this hauv qhov ntsuas hluav taws xob ntsug thaum tso cai rau cov dej uas tuaj yeem ua rau cov paj rwb.

2. V0 Flame-Retardant PP Formulation

V0 nplaim-retardant PP yuav tsum tau nplaim taws kuj zoo heev, feem ntau ua tiav los ntawm kev sib txuas cov nplaim hluav taws xob ua haujlwm zoo thiab ua kom zoo rau cov qauv.

2.1 Nplaim Retardant xaiv

• Brominated nplaim taws retardants: Xws li decabromodiphenyl ether (DBDPO) thiab tetrabromobisphenol A (TBBPA), uas muaj kev ua haujlwm siab tab sis tej zaum yuav tsis zoo ib puag ncig.
• Phosphorus-Based Flame Retardants: Xws li ammonium polyphosphate (APP) thiab liab phosphorus, uas yog eco-friendly thiab zoo.
• Intumescent nplaim retardants (IFR): Muaj cov kua qaub, cov pa roj carbon, thiab cov pa roj, muab eco-phooj ywg thiab siv hluav taws xob zoo.
• Magnesium Hydroxide (Mg (OH) ₂) los yog Aluminium Hydroxide (Al (OH) ₃): Eco-friendly inorganic nplaim retardants, tab sis siab loading yuav tsum tau.

2.2 Hom qauv

• PP Resin: 100phr (los ntawm qhov hnyav, tib yam hauv qab).
• Intumescent nplaim retardant (IFR): 20-30 Nws.
• Magnesium hydroxide: 10-20 hnub.
• Anti-Dripping Agent0.5-1 phr (piv txwv li, polytetrafluoroethylene, PTFE).
• Lubricant0.5-1 phr (xws li zinc stearate).
• Antioxidant0.2-0.5 hli

2.3 Cov txheej txheem ua haujlwm

• Sib tov: Uniformly muab PP resin, nplaim retardants, thiab lwm yam additives nyob rau hauv ib tug high-ceev sib tov.
• Extrusion & Pelletizing: Siv ob lub ntsia hlau extruder ntawm 180-220 ° C los tsim cov pellets.
• Txhaj Molding: Pwm cov pellets rau hauv cov qauv kuaj siv lub tshuab txhaj tshuaj molding.

2.4 Kev Ntsuas Kev Ua Haujlwm

• UL94 Vertical Hlawv Test: Cov qauv yuav tsum ua tau raws li V0 qhov yuav tsum tau (tus kheej tua tsis pub dhau 10 vib nas this, tsis muaj paj rwb ignition los ntawm drips).
• Mechanical Properties Testing: Ntsuas lub zog tensile, cuam tshuam lub zog, thiab lwm yam, kom ntseeg tau tias cov khoom ua tau raws li qhov yuav tsum tau ua.

3. V2 Flame-Retardant PP Formulation Design

V2 nplaim-retardant PP muaj cov nplaim hluav taws xob qis dua thiab tuaj yeem ua tiav nrog cov nplaim hluav taws xob nruab nrab.

3.1 Nplaim Retardant xaiv

• Brominated nplaim taws retardants: Xws li DBDPO lossis TBBPA, tsuas yog xav tau me me kom ua tiav V2.
• Phosphorus-Based Flame Retardants: Xws li liab phosphorus los yog phosphates, muab eco-phooj ywg kev daws teeb meem.
• Magnesium Hydroxide (Mg (OH) ₂) los yog Aluminium Hydroxide (Al (OH) ₃): Eco-phooj ywg tab sis xav tau kev thauj khoom ntau dua.

3.2 Hom qauv

• PP Resin: 100 phr.
• Brominated nplaim retardant: 5–10 dr hab.
• Antimony Trioxide (Sb₂O₃): 2-3phr (raws li ib tug synergist).
• Anti-Dripping Agent0.5-1 phr (piv txwv li, PTFE).
• Lubricant0.5-1 phr (xws li zinc stearate).
• Antioxidant0.2-0.5 hli

3.3 Cov txheej txheem ua haujlwm

• Ib yam li V0-qib ua haujlwm (sib tov, extrusion, txhaj tshuaj molding).

3.4 Kev Ntsuas Kev Ua Haujlwm

• UL94 Vertical Hlawv Test: Cov qauv yuav tsum ua tau raws li V2 qhov yuav tsum tau (tus kheej tua tsis pub dhau 30 vib nas this, tso cai tso tawm).
• Mechanical Properties Testing: Ua kom cov khoom ua tau raws li qhov xav tau ntawm daim ntawv thov.

4. Sib piv ntawm V0 thiab V2 Formulations

4.1 Nplaim Retardant Loading

• V0 xav tau kev thauj khoom ntau dua (piv txwv li, 20–30phr IFR lossis 10–20phr Mg(OH)₂).
• V2 yuav tsum tau qis loading (piv txwv li, 5-10phr brominated nplaim retardants).

4.2 Nplaim Retardancy Efficiency

• V0 muab cov nplaim hluav taws zoo dua rau cov kev xav tau nruj dua.

4.3 Mechanical Properties

• V0 formulations yuav cuam tshuam rau txhua yam khoom (xws li, cuam tshuam lub zog, tensile lub zog) vim muaj cov ntsiab lus ntxiv ntau dua.
• V2 formulations tsis tshua muaj kev cuam tshuam rau kev ua haujlwm ntawm cov tshuab.

4.4 Kev cuam tshuam ib puag ncig

• V0 formulations feem ntau siv eco-friendly nplaim retardants (xws li, IFR, Mg(OH)₂).
• V2 formulations yuav siv brominated nplaim retardants, uas tsis tshua muaj eco-phooj ywg.

5. Formulation Optimization Recommendation

5.1 Nplaim Retardant Synergism

• Kev sib xyaw cov nplaim hluav taws sib txawv (xws li, IFR + Mg (OH)₂, brominated + Sb₂O₃) tuaj yeem txhim kho cov nplaim hluav taws xob thiab txo qhov chaw thau khoom.

5.2 Kev hloov kho saum npoo

• Hloov kho cov nplaim hluav taws tsis zoo (piv txwv li, Mg(OH)₂, Al(OH)₃) txhim kho kev sib raug zoo nrog PP, txhim kho cov khoom siv kho tshuab.

5.3 Kev ua kom zoo dua

• Tswj extrusion/injection parameters (kub, siab, ntsia hlau ceev) kom zoo dispersion thiab tiv thaiv degradation.

6. Cov lus xaus

Tus tsim ntawm V0 thiab V2 nplaim-retardant PP formulations nyob ntawm tej nplaim kuj yuav tsum tau thiab daim ntawv thov scenarios.

• V0 formulationsFeem ntau siv cov nplaim hluav taws xob ua haujlwm siab (piv txwv li, IFR, Mg(OH)₂) thiab ua kom zoo dua qub kom ua tau raws li cov qauv nruj.
• V2 formulationstuaj yeem ua tiav cov nplaim hluav taws xob qis nrog cov khoom siv tsawg tsawg (xws li brominated nplaim retardants).

Hauv kev siv cov tswv yim, yam xws li nplaim taws, kev ua haujlwm zoo, kev cuam tshuam ib puag ncig, thiab tus nqi yuav tsum sib npaug los txhim kho cov qauv tsim thiab kev ua haujlwm.

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