Fomu yodziwitsira yoletsa moto ya SK Polyester ES500 (UL94 V0 rating).

Fomu yodziwitsira yoletsa moto ya SK Polyester ES500 (UL94 V0 rating).

I. Njira Yopangira Mapangidwe

1. Kugwirizana kwa Substrate
   • SK Polyester ES500: Polyester yopangidwa ndi thermoplastic yokhala ndi kutentha kwa 220–260°C. Choletsa moto chiyenera kupirira kutentha kumeneku.
   • Zofunikira: Kusunga nthawi yochepetsera moto (V0), mphamvu ya makina (kulimba kwa mphamvu), ndi kusinthasintha kwa ntchito yokonza.
2. Dongosolo Loletsa Moto Logwirizana
   • Ultrafine Aluminium Hydroxide (ATH): Choletsa moto chachikulu, kutaya madzi m'thupi kuchokera ku endothermic. Kuyika kuyenera kulinganiza kuletsa moto ndi mphamvu zake.
   • Aluminium Hypophosphite: Char-forming synergist, imagwira ntchito ndi ATH kuti ipange phosphorous-aluminium synergistic effect, ndikukweza khalidwe la char.
   • Zinc Borate: Chowonjezera cha Char, chimaletsa utsi, ndipo chimapanga chotchinga cholimba ndi ATH.
   • MCA (Melamine Cyanurate): Choletsa moto wa gasi, chimachepetsa mpweya ndipo chimaletsa kutuluka kwa madzi osungunuka.

II. Mankhwala Ovomerezeka (Kulemera kwa Peresenti)

III. Kulamulira Njira Zofunikira

1. Kukonza Kufalikira
   • Mankhwala asanagwiritsidwe ntchito: Zilowerereni ATH ndi aluminium hypophosphite mu 1% KH-550 ethanol solution kwa maola awiri, kenako ziume pa 80°C.
   • Kusakaniza Mndandanda:
     1. Utomoni wa maziko + chotulutsira + cholumikizira → Kusakaniza kotsika (500 rpm, mphindi 5).
     2. Onjezani ATH/aluminiyamu hypophosphite yosinthidwa → Kudula kwa liwiro lalikulu (2500 rpm, mphindi 20).
     3. Onjezani zinc borate/MCA/PTFE → Kusakaniza kotsika (800 rpm, mphindi 10).
   • Zipangizo: Chotulutsira zinthu ziwiri (malo otentha: malo odyetsera 200°C, malo osungunuka 230°C, kutentha 220°C).
2. Kuwongolera Kutentha kwa Zinthu
   • Onetsetsani kuti kutentha kwa kusungunuka kuli <250°C kuti MCA isawonongeke (MCA imawola pa 250–300°C).
   • Ma pellets ozizira ngati madzi pambuyo potulutsa kuti aletse kusamuka kwa zinthu zoletsa moto.

IV. Njira Yogwirizanitsa Yotetezera Moto

1. ATH + Aluminium Hypophosphite
   • ATH imayamwa kutentha ndi kutulutsa nthunzi ya madzi, kuchepetsa mpweya woyaka.
   • Aluminium hypophosphite imayambitsa mapangidwe a dense char (AlPO₄), ndikuletsa kusamutsa kutentha.
2. Zinc Borate + MCA
   • Zinc borate imapanga chotchinga chagalasi pamwamba pa ming'alu ya char.
   • MCA imawola kuti itulutse NH₃, kuchepetsa mpweya ndikuletsa zochita za free radical.
3. PTFE Yoletsa Kutaya Madzi
   • Ufa wa PTFE umapanga netiweki ya ulusi, zomwe zimachepetsa chiopsezo cha kuyaka kwa madzi osungunuka.

V. Kukonza Magwiridwe Antchito ndi Kuthetsa Mavuto

VI. Ziyeso Zotsimikizira

1. Mayeso a UL94 V0:
   • Zitsanzo za 1.6 mm ndi 3.2 mm, nthawi yonse yoyaka < masekondi 50 pambuyo pa kuyatsa kawiri, palibe kuyatsa komwe kumatuluka.
2. LOI: Cholinga ≥30% (zenizeni ≥28%).
3. Katundu wa Makina:
   • Mphamvu yokoka > 40 MPa, mphamvu yokoka > 5 kJ/m² (muyezo wa ASTM).
4. Kukhazikika kwa Kutentha (TGA):
   • Zotsalira za Char pa 800°C > 20%, kutentha koyambirira kwa kuwonongeka > 300°C.

VII. Chitsanzo cha Mafotokozedwe

Kapangidwe kameneka ndi kapangidwe kake kamakwaniritsa bwino kuchedwa kwa moto kwa UL94 V0 kwa SK Polyester ES500 pomwe kumalinganiza kuthekera kwa kukonzedwa ndi mawonekedwe a makina. Mayeso ang'onoang'ono amalimbikitsidwa kuti atsimikizire kufalikira musanasinthe ma ratios (monga, kulinganiza aluminium hypophosphite ndi MCA). Kuti muwonjezere kuchedwa kwa moto, ganizirani kuwonjezera 2% boron nitride nanosheets (BNNS) ngati chodzaza cha kutentha chowongolera/choletsa moto chomwe chimagwira ntchito ziwiri.

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