Polypropylene (PP) UL94 V0 uye V2 Flame Retardant Formulations

Polypropylene (PP) UL94 V0 uye V2 Flame Retardant Formulations

Polypropylene (PP) inoshandiswa zvakanyanya thermoplastic polymer, asi kupisa kwayo kunomisa kushandiswa kwayo mune mamwe minda. Kuti isangane neyakasiyana-siyana yekudzosa moto zvinodiwa (senge UL94 V0 uye V2 mamakisi), zvinodzoreredza murazvo zvinogona kuiswa kuti zviwedzere kupikisa kwePP. Pazasi pane sumo yakadzama yemhando yePP inodzoreredza moto yeUL94 V0 uye V2 mamakisi, kusanganisira kusarudzwa kwemurazvo wemoto, dhizaini yekugadzira, maitiro ekugadzirisa, uye kuyedzwa kwekuita.

1. Nhanganyaya kune UL94 Flame Retardancy Ratings

UL94 chiyero chekupisa chakagadzirwa neUnderwriters Laboratories (UL) kuti iongorore kupikisa kwemurazvo wemidziyo yepurasitiki. Zviyero zvakajairika zvekudzosa moto zvinosanganisira:

• V0: Yepamusoro-soro retardancy giredhi, inoda sampuli kuzvidzima mukati memasekonzi gumi muyedzo yekupisa yakatwasuka pasina kubatidza donje nekudonha.
• V2: Giredhi rekudzimisa murazvo wakaderera, unobvumira sampuli kuzvidzima mukati memasekonzi makumi matatu muyedzo yekupisa yakatwasuka uku ichibvumira kudonha kunogona kubatidza donje.

2. V0 Flame-Retardant PP Formulation

V0 inodzoreredza murazvo PP inoda yakanakisa murazvo wemoto, unowanzo kuwanikwa nekubatanidza yakakwirira-inoshanda zvinodzosa moto uye nekugonesa magadzirirwo.

2.1 Flame Retardant Sarudzo

• Brominated Flame Retardants: Zvakadai se decabromodiphenyl ether (DBDPO) uye tetrabromobisphenol A (TBBPA), iyo inopa kushanda kwepamusoro asi inogona kunge isina kunyanya kushamwaridzana.
• Phosphorus-Yakavakirwa Flame Retardants: Zvakadai seammonium polyphosphate (APP) uye tsvuku phosphorus, iyo inowedzera eco-hushamwari uye inoshanda.
• Intumescent Flame Retardants (IFR): Inosanganisira iyo asidhi sosi, kabhoni sosi, uye gasi sosi, inopa eco-inoshamwaridzika uye inoshanda murazvo retadancy.
• Magnesium Hydroxide (Mg(OH)₂) kana Aluminium Hydroxide (Al(OH)₃): Eco-inoshamwaridzika inorganic flame retardants, asi yakakwirira yekurodha mazinga anodiwa.

2.2 Yakajairika Magadzirirwo

• PP Resin: 100phr (nehuremu, zvakafanana pazasi).
• Intumescent Flame Retardant (IFR): 20–30phr.
• Magnesium Hydrooxide: 10–20phr.
• Anti-Dripping Agent: 0.5–1 phr (semuenzaniso, polytetrafluoroethylene, PTFE).
• Lubricant: 0.5–1 phr (semuenzaniso, zinc stearate).
• Antioxidant: 0.2–0.5 pr.

2.3 Maitiro ekugadzirisa

• Kusanganisa: Yakafanana musanganiswa PP resin, murazvo retardants, uye zvimwe zvinowedzera mune yakakwirira-kumhanya musanganiswa.
• Extrusion & Pelletizing: Shandisa twin-screw extruder pa 180-220 ° C kugadzira pellets.
• Jekiseni Molding: Gadzira ma pellets kuita sampuli dzekuyedza uchishandisa jekiseni rekuumba muchina.

2.4 Performance Testing

• UL94 Vertical Burn Test: Samples dzinofanirwa kusangana neV0 zvinodiwa (kuzvidzima mukati memasekondi gumi, hapana kupisa kwekotoni kubva kumadrip).
• Mechanical Properties Testing: Ongorora kusimba kwesimba, simba rekuita, nezvimwe, kuona kuti kuita kwezvinhu kunosangana nezvinodiwa zvekushandisa.

3. V2 Flame-Retardant PP Formulation Design

V2 flame-retardant PP ine yakaderera murazvo kuramba zvinodiwa uye inogona kuwanikwa ine mwero murazvo unodzoreredza kurodha.

3.1 Flame Retardant Sarudzo

• Brominated Flame Retardants: Zvakadai seDBDPO kana TBBPA, inoda chete mari shoma kuti uwane V2.
• Phosphorus-Yakavakirwa Flame Retardants: Senge tsvuku phosphorus kana phosphates, inopa eco-hushamwari mhinduro.
• Magnesium Hydroxide (Mg(OH)₂) kana Aluminium Hydroxide (Al(OH)₃): Eco-inoshamwaridzika asi inoda yakakwirira kurodha.

3.2 Yakajairika Magadzirirwo

• PP Resin: 100phr.
• Brominated Flame Retardant: 5–10phr.
• Antimony Trioxide (Sb₂O₃): 2–3phr (se synergist).
• Anti-Dripping Agent: 0.5–1 phr (semuenzaniso, PTFE).
• Lubricant: 0.5–1 phr (semuenzaniso, zinc stearate).
• Antioxidant: 0.2–0.5 pr.

3.3 Maitiro ekugadzirisa

• Zvakafanana neV0-giredhi kugadzirisa (kusanganisa, extrusion, jekiseni kuumba).

3.4 Performance Testing

• UL94 Vertical Burn Test: Samples dzinofanirwa kusangana neV2 zvinodiwa (kuzvidzima mukati me30 seconds, kudonha kunobvumidzwa).
• Mechanical Properties Testing: Ita shuwa kuti kushanda kwezvinhu kunosangana nezvinodiwa zvekushandisa.

4. Kuenzanisa Pakati peV0 neV2 Formulations

4.1 Flame Retardant Loading

• V0 inoda kurodha kwepamusoro (semuenzaniso, 20–30phr IFR kana 10–20phr Mg(OH)₂).
• V2 inoda kurodha yakaderera (semuenzaniso, 5–10phr brominated flame retardants).

4.2 Flame Retardancy Kubudirira

• V0 inopa yakakwirira murazvo kuramba kune dzakaomarara zvinodiwa.

4.3 Mechanical Properties

• V0 maumbirwo anogona kukanganisa zvakanyanya mashandiro emuchina (semuenzaniso, simba rekukanganisa, kusimba kwesimba) nekuda kwekuwedzera kwekuwedzera.
• V2 magadzirirwo ane mashoma maitiro pane mechanic kuita.

4.4 Kukanganisa Kwezvakatipoteredza

• V0 magadzirirwo anowanzo shandisa eco-inoshamwaridzika murazvo retardants (semuenzaniso, IFR, Mg(OH) ₂).
• V2 magadzirirwo anogona kushandisa brominated flame retardants, ayo asina eco-hushamwari.

5. Kugadziriswa Kwekugadzirisa Mazano

5.1 Flame Retardant Synergism

• Kubatanidza zvakasiyana-siyana zvinodzosa moto (semuenzaniso, IFR + Mg(OH) ₂, brominated + Sb₂O₃) inogona kuwedzera kunonoka kwemurazvo uye kuderedza kurodha.

5.2 Surface Kugadziriswa

• Kugadzirisa inorganic flame retardants (semuenzaniso, Mg (OH) ₂, Al(OH) ₃) inovandudza kuenderana nePP, inovandudza ma mechanical properties.

5.3 Kugadzirisa Kugadzirisa

• Kudzora extrusion / jekiseni parameters (tembiricha, kumanikidza, screw speed) inovimbisa yunifomu kupararira uye kudzivirira kudzikira.

6. Mhedziso

Dhizaini yeV0 uye V2 murazvo-inodzoreredza PP magadzirirwo anoenderana neakananga kupikisa zvinodiwa uye mamiriro ekushandisa.

• V0 maitirovanowanzo shandisa zvinodzoreredza murazvo wepamusoro-soro (semuenzaniso, IFR, Mg(OH) ₂) uye optimized synergism kuti isangane nemipimo yakaoma.
• V2 maitiroinogona kuwana yakaderera murazvo retadancy ine mashoma ekuwedzera (semuenzaniso, brominated flame retardants).

Mumashandisirwo anoshanda, zvinhu zvakaita sekuramba murazvo, kuita kwemuchina, kukanganisa kwezvakatipoteredza, uye mutengo unofanirwa kuve wakaenzana kukwenenzvera maumbirwo nemaitiro ekugadzirisa.

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