Chiyambi ndi Kugwiritsa Ntchito Mwayi wa Ukadaulo Wosintha Wopanda Halogen wa Zipangizo za Polypropylene (PP)

Ndi malamulo okhwima okhudza chilengedwe komanso chidziwitso chowonjezereka cha chitetezo cha ogula, ukadaulo wa polypropylene wopanda halogen womwe umachepetsa moto wakhala chisankho chofunikira kwambiri pakulinganiza magwiridwe antchito a zinthu ndi chitetezo komanso kuteteza chilengedwe. Zinthu zoletsa moto zachikhalidwe zomwe zimakhala ndi halogen zimapanga mpweya woopsa komanso wowononga panthawi yoyaka, pomwe zinthu zoletsa moto za V0 zopanda halogen, zomwe zimakhala ndi mphamvu zoteteza chilengedwe komanso mphamvu zoteteza moto, zikuchita gawo lofunika kwambiri m'mafakitale osiyanasiyana.

01 Chigawo cha ukadaulo: Mfundo yogwirira ntchito ndi mtundu wa choletsa moto cha V0 chopanda halogen

Ukadaulo waukulu wa zinthu zoletsa moto za V0 zopanda halogen uli mu njira yawo yapadera yoletsa moto. Zikakumana ndi kutentha kwambiri, zinthu zoletsa motozi zimapanga thovu lofanana komanso lolimba la makala pamwamba pa zinthuzo. Thovu ili limateteza bwino kutentha ndi mpweya, ndipo limaletsa kupanga utsi, motero limapangitsa kuti V-0 ikhale yoletsa moto.

Zinthu zoletsa moto zomwe zimalowa m'thupi la nayitrogeni ndizomwe zimagwiritsidwa ntchito kwambirikugwiritsa ntchito phosphorous ndi nayitrogeni ngati njira yofunika kwambiricholetsa motoZinthu zina, kuwonjezera pafupifupi 24%-26% ku polypropylene ndikokwanira kukwaniritsa muyezo wa UL94 V-0 wa chitsanzo cha 1.6mm. Mtundu uwu wa choletsa moto umadziwika ndi utsi wochepa, poizoni wochepa, komanso kusamala chilengedwe, mogwirizana ndi malangizo a EU RoHS okhudzana ndi chilengedwe ndi malamulo oyenera apakhomo.

02 Malo ogwiritsira ntchito: Kuyambira zamagetsi ndi zida zamagetsi mpaka zida zamagalimoto

Zipangizo za PP zopanda halogen V0 zoletsa moto zakhala zikugwiritsidwa ntchito kwambiri m'mafakitale osiyanasiyana, ndi ntchito zazikulu kuphatikizapo:
Mu gawo la zamagetsi ndi zida zamagetsi, zinthu zoletsa moto izi zimagwiritsidwa ntchito kwambiri pogwiritsira ntchito zinthu zoletsa moto m'nyumba zosiyanasiyana zosungiramo zinthu monga zophikira mpunga, nyumba zosungiramo ketulo yamagetsi, nyumba zotulutsira madzi, ndi ma panelo a firiji ndi makina ochapira.
Mu makampani opanga magalimoto, zoletsa moto za V0 zopanda halogen zimagwiritsidwa ntchito mu zida zamagalimoto zoziziritsira mpweya, zida zolumikizira pakati, ndi zina.
Mu gawo la zipangizo zomangira, PP yopanda halogen yoletsa moto imagwiritsidwa ntchito pazinthu monga mapepala ndi mabolodi.

03 Mfundo Zopweteka: Kugwirizana, Kukhazikika kwa Kutentha, ndi Mavuto Okonza

Ngakhale kuti pali ubwino wambiri wa PP yopanda halogen V0 yoletsa moto, pali mavuto angapo aukadaulo omwe akupitilizabe kugwiritsidwa ntchito:

Kusagwirizana kosayenera ndiye vuto lalikuluKutengaammonium polyphosphate (APP)Mwachitsanzo, choletsa moto chomwe chimagwiritsidwa ntchito kwambiri popanda halogen, polarity yake yamphamvu imapangitsa kuti chisagwirizane bwino ndi polypropylene yosakhala polar, zomwe zimakhudza mosavuta mawonekedwe a makina a chinthucho chikawonjezedwa mochuluka.

Kusakhazikika kwa kutentha ndi vuto lina lalikuluAPP ndi polima woyera wokhala ndi ufa wochepa komanso wosagwirizana ndi kutentha. Pa kutentha kwambiri, imaphikidwa ndi pyrolysis, ndikuwola kukhala zinthu monga ammonium phosphate, metaphosphoric acid, ammonia, ndi nthunzi yamadzi. Zinthu zowola izi, monga metaphosphoric acid, zomwe zimatsala mu utomoni zimatha kugwa panthawi youmba, kumamatira kukhoma kapena sikulufu, zomwe zimakhudza kwambiri mawonekedwe a chinthucho komanso momwe chimagwirira ntchito bwino.

Kuyamwa ndi kusamuka kwa chinyezi ndi nkhani zofunika kwambiri.APP imakhala ndi mphamvu yotha kuyamwa madzi mosavuta, yomwe imayamwa mosavuta chinyezi kuchokera mumlengalenga, chomwe chimasamuka kupita pamwamba pa chinthucho, zomwe zimapangitsa kuti chitayike. Izi sizimangokhudza kulimba kwa zinthu zoletsa moto komanso zingayambitsenso zolakwika pamwamba pa chinthucho.

Kuwonjezera kwambirindi vuto lomwe limakumananso ndi PP yopanda halogen yomwe imaletsa moto. Poyerekeza ndi zida zodziwika bwino zoletsa moto zokhala ndi halogen, makina opanda halogen nthawi zambiri amafunikira kuchuluka kowonjezera kuti akwaniritse muyezo wa V-0, zomwe zimayambitsa zovuta pa kapangidwe ka makina ndi kuwongolera ndalama.

04 Mayankho ndi Malangizo Oyendetsera Zamtsogolo

Poyang'anizana ndi mavuto aukadaulo pakugwiritsa ntchito ma PP opanda halogen V0 oletsa moto, makampaniwa apanga njira zingapo zothandiza:
-Kukonza pamwamba ndi kukonza kapangidwe kake ndi njira zothandiza kwambiri zowonjezerera kugwirizana.
-Kukonza bwino njira zoyendetsera ntchito n'kofunika kwambiri.
-Kupanga njira zatsopano zopewera moto ndiye yankho lofunikira.