Mapangidwe a Polypropylene (PP) UL94 V0 ndi V2 Flame Retardant

Mapangidwe a Polypropylene (PP) UL94 V0 ndi V2 Flame Retardant

Polypropylene (PP) ndi polima yogwiritsidwa ntchito kwambiri ya thermoplastic, koma kuyaka kwake kumalepheretsa kugwiritsidwa ntchito m'magawo ena. Kuti akwaniritse zofunikira zosiyanasiyana zoletsa kuyaka (monga magiredi a UL94 V0 ndi V2), zoletsa kuyaka zitha kuphatikizidwa kuti ziwonjezere kukana kwa kuyaka kwa PP. Pansipa pali mawu oyamba mwatsatanetsatane a mitundu ya PP yoletsa kuyaka ya magiredi a UL94 V0 ndi V2, kuphatikiza kusankha zoletsa kuyaka, kapangidwe ka kapangidwe kake, njira zogwirira ntchito, ndi kuyesa magwiridwe antchito.

1. Chiyambi cha UL94 Flame Retardancy Ratings

UL94 ndi muyezo woyatsa moto womwe unapangidwa ndi Underwriters Laboratories (UL) kuti awone ngati zinthu zapulasitiki sizingayatse moto. Mayeso odziwika bwino okhudza kuchedwa kwa moto ndi awa:

• V0: Mtundu wapamwamba kwambiri woletsa moto, womwe umafuna kuti zitsanzo zizimitse zokha mkati mwa masekondi 10 poyesa kuwotcha koyima popanda kuyatsa thonje ndi madzi.
• V2: Mlingo wocheperako woletsa moto, womwe umalola zitsanzo kudzizimitsa zokha mkati mwa masekondi 30 mu mayeso oyaka molunjika pomwe zikulola kutayikira komwe kungayatse thonje.

2. Kupanga kwa V0 Flame-Retardant PP

PP yoletsa moto ya V0 imafuna kukana bwino moto, komwe nthawi zambiri kumachitika pophatikiza zinthu zoletsa moto zomwe zimagwira ntchito bwino komanso kukonza bwino njira yopangira.

2.1 Kusankha Koletsa Moto

• Zoletsa Moto Zokhala ndi BrominatedMonga decabromodiphenyl ether (DBDPO) ndi tetrabromobisphenol A (TBBPA), zomwe zimapereka mphamvu zambiri koma sizingakhale zowononga chilengedwe.
• Zoletsa Moto Zochokera ku Phosphorus: Monga ammonium polyphosphate (APP) ndi phosphorous wofiira, zomwe zimakhala zotetezeka ku chilengedwe komanso zothandiza.
• Zoletsa Moto Zochokera M'mimba (IFR): Yokhala ndi gwero la asidi, gwero la kaboni, ndi gwero la mpweya, zomwe zimapangitsa kuti moto ukhale wochezeka komanso wotetezeka ku chilengedwe.
• Magnesium Hydroxide (Mg(OH)₂) kapena Aluminium Hydroxide (Al(OH)₃): Zinthu zoletsa moto zosakhudzana ndi chilengedwe, koma zimafunika kunyamula katundu wambiri.

2.2 Kapangidwe Kabwinobwino

• PP Resin: 100phr (potengera kulemera, zomwezo pansipa).
• Kutentha Kwambiri kwa Moto wa Intumescent (IFR): 20–30pm.
• Magnesium Hydroxide: 10–20pm.
• Woletsa Kutaya Madontho: 0.5–1 phr (monga, polytetrafluoroethylene, PTFE).
• Mafuta odzola: 0.5–1 phr (monga, zinc stearate).
• Antioxidant: 0.2–0.5 phr.

2.3 Njira Zogwiritsira Ntchito

• Kusakaniza: Sakanizani mofanana utomoni wa PP, zinthu zoletsa moto, ndi zina zowonjezera mu chosakanizira cha liwiro lalikulu.
• Kutulutsa ndi Kutulutsa PelletizingGwiritsani ntchito chotulutsira cha screw ziwiri pa kutentha kwa 180–220°C kuti mupange ma pellets.
• Kupangira jakisoni: Pangani ma pellets kukhala zitsanzo zoyesera pogwiritsa ntchito makina opangira jakisoni.

2.4 Kuyesa Magwiridwe Antchito

• Mayeso Otentha Olunjika a UL94Zitsanzo ziyenera kukwaniritsa zofunikira za V0 (kuzimitsa zokha mkati mwa masekondi 10, palibe kuyatsa kwa thonje kuchokera ku madontho).
• Kuyesa Katundu wa Makina: Yesani mphamvu yokoka, mphamvu yokoka, ndi zina zotero, kuti muwonetsetse kuti magwiridwe antchito a zinthuzo akukwaniritsa zofunikira pakugwiritsa ntchito.

3. Kapangidwe ka V2 Kosapanga Moto wa PP

PP yoletsa moto ya V2 ili ndi zofunikira zochepa zopewera moto ndipo ingapezeke ndi kuletsa moto pang'ono.

3.1 Kusankha Koletsa Moto

• Zoletsa Moto Zokhala ndi BrominatedMonga DBDPO kapena TBBPA, zomwe zimafuna ndalama zochepa kuti zitheke V2.
• Zoletsa Moto Zochokera ku PhosphorusMonga phosphorous wofiira kapena phosphates, zomwe zimapereka njira zothetsera mavuto zachilengedwe.
• Magnesium Hydroxide (Mg(OH)₂) kapena Aluminium Hydroxide (Al(OH)₃): Ndi yotetezeka ku chilengedwe koma imafuna zinthu zambiri.

3.2 Kapangidwe Kabwinobwino

• PP Resin: 100phr.
• Woteteza Moto Wokhala ndi Brominated: 5–10pm.
• Antimoni Trioxide (Sb₂O₃): 2–3phr (monga wogwirizanitsa).
• Woletsa Kutaya Madontho: 0.5–1 phr (monga, PTFE).
• Mafuta odzola: 0.5–1 phr (monga, zinc stearate).
• Antioxidant: 0.2–0.5 phr.

3.3 Njira Zogwiritsira Ntchito

• Mofanana ndi kukonza kwa V0-grade (kusakaniza, kutulutsa, kupanga jakisoni).

3.4 Kuyesa Magwiridwe Antchito

• Mayeso Otentha Olunjika a UL94Zitsanzo ziyenera kukwaniritsa zofunikira za V2 (kudzizimitsa zokha mkati mwa masekondi 30, kutayikira madzi kumaloledwa).
• Kuyesa Katundu wa Makina: Onetsetsani kuti magwiridwe antchito a zinthu akukwaniritsa zosowa za pulogalamuyo.

4. Kuyerekeza Pakati pa Mafomula a V0 ndi V2

4.1 Kutsegula Kosatha kwa Lawi

• V0 imafuna katundu wokwera (monga, 20–30phr IFR kapena 10–20phr Mg(OH)₂).
• V2 imafuna katundu wochepa (monga, zoletsa moto za 5–10phr brominated flame).

4.2 Kugwira Ntchito Moyenera Poletsa Moto

• V0 imapereka kukana kwabwino kwa moto pazovuta kwambiri.

4.3 Katundu wa Makina

• Ma formula a V0 angakhudze kwambiri mawonekedwe a makina (monga mphamvu ya kukhudza, mphamvu yokoka) chifukwa cha kuchuluka kwa zowonjezera.
• Ma formula a V2 sakhudza kwambiri magwiridwe antchito a makina.

4.4 Zotsatira za Chilengedwe

• Ma formula a V0 nthawi zambiri amagwiritsa ntchito zinthu zoletsa moto zomwe siziwononga chilengedwe (monga IFR, Mg(OH)₂).
• Ma formula a V2 angagwiritse ntchito zinthu zoletsa moto zomwe zimakhala ndi brominated, zomwe sizimawononga chilengedwe.

5. Malangizo Okonza Mapangidwe

5.1 Kugwirizana Koletsa Moto

• Kuphatikiza zinthu zosiyanasiyana zoletsa moto (monga IFR + Mg(OH)₂, brominated + Sb₂O₃) kungathandize kuchepetsa kuchedwa kwa moto ndikuchepetsa katundu.

5.2 Kusintha kwa Malo

• Kusintha zinthu zoletsa moto zosapangidwa mwachilengedwe (monga Mg(OH)₂, Al(OH)₃) kumathandizira kuti zinthu zigwirizane ndi PP, zomwe zimapangitsa kuti zinthu zigwirizane ndi makina.

5.3 Kukonza Zinthu Mwadongosolo

• Kulamulira magawo otulutsira/kuikamo (kutentha, kupanikizika, liwiro la screw) kumatsimikizira kufalikira kofanana ndikuletsa kuwonongeka.

6. Mapeto

Kapangidwe ka ma formula a V0 ndi V2 oletsa moto a PP kumadalira zofunikira zinazake zotsutsana ndi moto komanso momwe amagwiritsidwira ntchito.

• Mafomula a V0nthawi zambiri amagwiritsa ntchito zinthu zoletsa moto zomwe zimagwira ntchito bwino kwambiri (monga IFR, Mg(OH)₂) komanso mgwirizano wabwino kwambiri kuti zikwaniritse miyezo yokhwima.
• Mafomula a V2akhoza kuchepetsa kuchedwa kwa moto pogwiritsa ntchito zowonjezera zochepa (monga brominated flame retardants).

Mu ntchito zenizeni, zinthu monga kukana moto, magwiridwe antchito a makina, kuwononga chilengedwe, ndi mtengo wake ziyenera kulinganizidwa bwino kuti njira zopangira ndi kukonza zinthu ziyende bwino.

More info., pls contact lucy@taifeng-fr.com