Polypropylene (PP) UL94 V0 ati V2 Flame Retardant Formulations

Polypropylene (PP) UL94 V0 ati V2 Flame Retardant Formulations

Polypropylene (PP) jẹ polymer thermoplastic ti a lo lọpọlọpọ, ṣugbọn flammability rẹ ṣe opin ohun elo rẹ ni awọn aaye kan. Lati pade awọn ibeere idaduro ina ti o yatọ (gẹgẹbi UL94 V0 ati awọn gilaasi V2), awọn idaduro ina le ṣepọ lati mu imudara ina ti PP pọ si. Ni isalẹ ni ifihan alaye si awọn agbekalẹ PP ina-retardant fun awọn onipò UL94 V0 ati V2, pẹlu yiyan idaduro ina, apẹrẹ agbekalẹ, awọn ilana ṣiṣe, ati idanwo iṣẹ.

1. Ifihan to UL94 Flame Retardancy-wonsi

UL94 jẹ boṣewa flammability ti o dagbasoke nipasẹ Awọn ile-iṣẹ Underwriters (UL) lati ṣe iṣiro resistance ina ti awọn ohun elo ṣiṣu. Awọn iwọn idaduro idaduro ina ti o wọpọ pẹlu:

• V0: Iwọn idaduro ina ti o ga julọ, ti o nilo awọn ayẹwo lati pa ara ẹni laarin awọn aaya 10 ni idanwo sisun inaro laisi sisun owu pẹlu sisun.
• V2: Ipele idaduro ina kekere kan, gbigba awọn ayẹwo laaye lati pa ararẹ laarin awọn aaya 30 ni idanwo ina inaro lakoko gbigba ṣiṣan ti o le tan owu.

2. V0 Ina-Retardant PP agbekalẹ

V0 ina-retardant PP nilo atako ina to dara julọ, ni igbagbogbo aṣeyọri nipasẹ iṣakojọpọ awọn imuduro ina ti o ni agbara-giga ati jijẹ agbekalẹ naa.

2.1 Ina Retardant Yiyan

• Brominated Flame Retardants: Bii decabromodiphenyl ether (DDPPO) ati tetrabromobisphenol A (TBBPA), eyiti o funni ni ṣiṣe giga ṣugbọn o le kere si ore ayika.
• Awọn Idaduro Ina-orisun Fọsifọru: Bii ammonium polyphosphate (APP) ati irawọ owurọ pupa, eyiti o jẹ ore-aye diẹ sii ati ti o munadoko.
• Awọn Idaduro Ina Intumescent (IFR): Ti o ni orisun acid kan, orisun erogba, ati orisun gaasi, pese ore-aye ati idaduro ina daradara.
• Iṣuu magnẹsia (Mg(OH)₂) tabi Aluminiomu Hydroxide (Al(OH)₃): Eco-friendly inorganic iná retardants, ṣugbọn awọn ipele ikojọpọ giga nilo.

2.2 Aṣoju Ilana

• PP Resini: 100phr (nipa iwuwo, kanna ni isalẹ).
• Idaduro Ina Intumescent (IFR): 20-30 kr.
• Iṣuu magnẹsia Hydroxide: 10–20phr.
• Anti-Dripping Aṣoju: 0.5-1 phr (fun apẹẹrẹ, polytetrafluoroethylene, PTFE).
• Oloro: 0.5–1 phr (fun apẹẹrẹ, zinc stearate).
• Antioxidant: 0.2-0.5 phr.

2.3 Awọn ilana ilana

• Dapọ: Ni iṣọkan parapo PP resini, ina retardants, ati awọn miiran additives ni a ga-iyara aladapo.
• Extrusion & Pelletizing: Lo extruder twin-skru ni 180-220 ° C lati ṣe awọn pellets.
• Abẹrẹ Molding: Ṣe awọn pellets sinu awọn apẹẹrẹ idanwo nipa lilo ẹrọ mimu abẹrẹ.

2.4 Igbeyewo Performance

• Inaro iná igbeyewo UL94: Awọn ayẹwo gbọdọ pade awọn ibeere V0 (pipa-ara ẹni laarin awọn aaya 10, ko si iginisonu owu lati awọn drips).
• Mechanical Properties Igbeyewo: Ṣe iṣiro agbara fifẹ, agbara ipa, ati bẹbẹ lọ, lati rii daju pe iṣẹ ohun elo pade awọn ibeere ohun elo.

3. V2 Ina-Retardant PP agbekalẹ Design

V2 ina-retardant PP ni o ni kekere ina resistance awọn ibeere ati ki o le wa ni waye pẹlu dede ina retardant ikojọpọ.

3.1 Ina Retardant Yiyan

• Brominated Flame Retardants: Bii DBDPO tabi TBBPA, to nilo awọn oye kekere nikan lati ṣaṣeyọri V2.
• Awọn Idaduro Ina-orisun Fọsifọru: Bii irawọ owurọ pupa tabi awọn fosifeti, ti o funni ni awọn solusan ore-aye.
• Iṣuu magnẹsia (Mg(OH)₂) tabi Aluminiomu Hydroxide (Al(OH)₃): Eco-ore ṣugbọn nilo awọn ikojọpọ giga.

3.2 Aṣoju Ilana

• PP Resini: 100phr.
• Brominated Flame Retardant: 5–10.
• Antimony Trioxide (Sb₂O₃): 2–3phr (gẹgẹbi aṣiṣẹpọ).
• Anti-Dripping Aṣoju: 0.5–1 phr (fun apẹẹrẹ, PTFE).
• Oloro: 0.5–1 phr (fun apẹẹrẹ, zinc stearate).
• Antioxidant: 0.2-0.5 phr.

3.3 Awọn ilana ilana

• Kanna bi V0-ite processing (dapọ, extrusion, abẹrẹ igbáti).

3.4 Igbeyewo Performance

• Inaro iná igbeyewo UL94: Awọn ayẹwo gbọdọ pade awọn ibeere V2 (pipa-ara ẹni laarin awọn aaya 30, fifa laaye).
• Mechanical Properties Igbeyewo: Rii daju pe iṣẹ ohun elo pade awọn iwulo ohun elo.

4. Afiwera Laarin V0 ati V2 Formulations

4.1 Ina Retardant Loading

• V0 nilo awọn ikojọpọ giga (fun apẹẹrẹ, 20–30phr IFR tabi 10–20phr Mg(OH)₂).
• V2 nilo awọn ikojọpọ kekere (fun apẹẹrẹ, 5–10phr brominated iná retardants).

4.2 Ina Retardancy ṣiṣe

• V0 pese aabo ina ti o ga julọ fun awọn ibeere ti o muna.

4.3 darí Properties

• Awọn agbekalẹ V0 le ni ipa pataki awọn ohun-ini ẹrọ (fun apẹẹrẹ, agbara ipa, agbara fifẹ) nitori akoonu afikun ti o ga julọ.
• Awọn agbekalẹ V2 ko ni ipa lori iṣẹ ṣiṣe ẹrọ.

4.4 Ipa Ayika

• Awọn agbekalẹ V0 nigbagbogbo lo awọn idapada ina ore-aye (fun apẹẹrẹ, IFR, Mg(OH)₂).
• V2 formulations le lo brominated iná retardants, eyi ti o jẹ kere irinajo-ore.

5. Awọn iṣeduro Iṣatunṣe Iṣaṣeṣe

5.1 Ina Retardant Synergism

• Apapọ awọn oriṣiriṣi ina retardants (fun apẹẹrẹ, IFR + Mg(OH)₂, brominated + Sb₂O₃) le jẹki idaduro ina ati dinku ikojọpọ.

5.2 dada Iyipada

• Iyipada awọn idaduro ina eleto (fun apẹẹrẹ, Mg(OH)₂, Al(OH)₃) ṣe ilọsiwaju ibamu pẹlu PP, imudara awọn ohun-ini ẹrọ.

5.3 Iṣatunṣe Iṣatunṣe

• Ṣiṣakoso awọn ifasilẹ extrusion / abẹrẹ (iwọn otutu, titẹ, iyara dabaru) ṣe idaniloju pipinka aṣọ ati idilọwọ ibajẹ.

6. Ipari

Apẹrẹ ti V0 ati V2 ina-retardant PP awọn agbekalẹ da lori awọn ibeere resistance ina kan pato ati awọn oju iṣẹlẹ ohun elo.

• Awọn agbekalẹ V0ojo melo lo ga-ṣiṣe ina retardants (fun apẹẹrẹ, IFR, Mg(OH)₂) ati iṣapeye amuṣiṣẹpọ lati pade stringent awọn ajohunše.
• V2 agbekalẹle ṣe aṣeyọri idaduro ina kekere pẹlu awọn afikun diẹ (fun apẹẹrẹ, awọn idaduro ina brominated).

Ninu awọn ohun elo ti o wulo, awọn okunfa bii resistance ina, iṣẹ ṣiṣe ẹrọ, ipa ayika, ati idiyele gbọdọ jẹ iwọntunwọnsi lati mu awọn agbekalẹ ati awọn ilana ṣiṣe ṣiṣẹ.

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