Chifukwa Chiyani Nayiloni Yotentha Kwambiri Imakondedwa Kuti Igwiritsidwe Ntchito M'zigawo Zozungulira Injini Ya Galimoto?

Chifukwa cha pulasitiki yamagetsi, zida zamagalimoto, ndi zida zamagalimoto, zofunikira zapamwamba zimayikidwa pakuchita kwa nayiloni komanso kukana kutentha kwambiri.Izi zinatsegula chiyambi cha kafukufuku ndi chitukuko ndi kugwiritsa ntchito nayiloni yotentha kwambiri.

Ulusi wagalasi wothamanga kwambiri wolimbitsa kutentha kwambiri wa nayiloni PPA ndi imodzi mwa mitundu yatsopano yomwe yakopa chidwi, ndipo ndi imodzi mwazinthu zatsopano zomwe zikukula mwachangu komanso zotsika mtengo kwambiri.Chingwe chagalasi chimalimbitsa kutentha kwa nayiloni yokhala ndi zinthu zotengera kutentha kwambiri kwa nayiloni PPA ndiyosavuta kupanga yolondola kwambiri, yosagwira kutentha kwambiri komanso zinthu zamphamvu kwambiri.Makamaka pazinthu zotumphukira zama injini zamagalimoto, zomwe zimafunikira kuthana ndi zovuta zakukalamba, nayiloni yotentha kwambiri pang'onopang'ono yakhala chisankho chabwino kwambiri pazida zamagalimoto zamagalimoto.Ndi chiyaniwapaderaza nayiloni yotentha kwambiri?

1, Mphamvu zabwino zamakina

Poyerekeza ndi nayiloni yachikhalidwe ya aliphatic (PA6/PA66), nayiloni yotentha kwambiri imakhala ndi maubwino odziwikiratu, omwe amawonetsedwa makamaka pamakina opangira mankhwala komanso kukana kwake kutentha.Poyerekeza ndi mphamvu zoyambira zamakina, nayiloni yotentha kwambiri imakhala ndi ulusi wagalasi womwewo pamalopo.Ndiwokwera 20% kuposa nayiloni yachikhalidwe ya aliphatic, yomwe imatha kupereka mayankho opepuka pamagalimoto.

Magalimoto a thermostatic nyumba opangidwa ndi nayiloni yotentha kwambiri.

2, Ultra-high kutentha kukalamba ntchito

Pansi pa matenthedwe matenthedwe kutentha kwa 1.82MPa, kutentha kwa nayiloni 30% galasi CHIKWANGWANI analimbitsa akhoza kufika 280 °C, pamene chikhalidwe aliphatic PA66 30% GF pafupifupi 255 °C.Zogulitsa zikakwera mpaka 200 ° C, zimakhala zovuta kuti ma nayiloni azikhalidwe azikhalidwe azikwaniritsa zofunikira, makamaka zotumphukira za injini zakhala zikutentha kwambiri komanso kutentha kwambiri kwa nthawi yayitali.Mu malo chonyowa, ndipo ayenera kupirira dzimbiri mawotchi mafuta.

3, Kukhazikika kwabwino kwambiri

Mayamwidwe amadzi a aliphatic nayiloni ndiokwera kwambiri, ndipo kuchuluka kwa mayamwidwe amadzi kumatha kufika 5%, zomwe zimapangitsa kuti chinthucho chisasunthike kwambiri, chomwe ndi chosayenera kwambiri pazinthu zina zolondola kwambiri.Kuchuluka kwa magulu a amide pa kutentha kwakukulu kwa nayiloni kumachepetsedwa, kuchuluka kwa mayamwidwe amadzi ndi theka la nayiloni wamba wa aliphatic, ndipo kukhazikika kwake kumakhala bwinoko.

4, Kukana kwamphamvu kwamankhwala

Popeza zotumphukira zama injini zamagalimoto nthawi zambiri zimakumana ndi wothandizila mankhwala, zofunika kwambiri zimayikidwa pa kukana kwa zinthu zakuthupi, makamaka kuwonongeka kwa petulo, refrigerant ndi mankhwala ena kumawononga zodziwikiratu pa aliphatic polyamide, pomwe kutentha kwapadera. Kapangidwe ka nayiloni kamapangitsa kuperewera kumeneku, kotero mawonekedwe a nayiloni omwe amatentha kwambiri akweza malo ogwiritsira ntchito injini kukhala watsopano.

Zovala zamutu za silinda zamagalimoto zopangidwa ndi nayiloni yotentha kwambiri.

Ntchito zamagalimoto zamagalimoto

Popeza PPA imatha kupereka kutentha kwa kutentha kopitilira 270 ° C, ndi pulasitiki yabwino yopangira zida zothana ndi kutentha m'mafakitale amagalimoto, zamakina, ndi zamagetsi / zamagetsi.Nthawi yomweyo, PPA ndiyabwinonso pazigawo zomwe zimayenera kusunga umphumphu pa kutentha kwakanthawi kochepa.

Chophimba chagalimoto chopangidwa ndi nayiloni yotentha kwambiri

Nthawi yomweyo, mapulasitiki azitsulo monga makina amafuta, makina otulutsa mpweya, ndi makina oziziritsa pafupi ndi injini asinthidwa ndi ma resins a thermosetting kuti abwezeretsenso, ndipo zofunikira pazida ndizovuta kwambiri.Kukana kutentha, kulimba, komanso kukana kwamankhwala kwa mapulasitiki aukadaulo azinthu zam'mbuyomu sikungathenso kukwaniritsa zofunikira.

Kuphatikiza apo, mndandanda wamtundu wa nayiloni wotentha kwambiri umasunga zabwino zodziwika bwino zamapulasitiki, zomwe ndizosavuta kukonza, kudula, kumasuka kwa mapangidwe aulere a magawo ophatikizika ophatikizidwa, komanso kuchepetsa kulemera ndi phokoso ndi kukana dzimbiri.

Popeza kutentha kwa nayiloni kumatha kupirira mphamvu zambiri, kutentha kwambiri ndi malo ena ovuta, ndikoyenera kwambiri emadera a injini (monga zophimba za injini, zosinthira ndi zolumikizira) ndi njira zotumizira (monga mazenera onyamula), makina a mpweya (monga makina owongolera mpweya) ndi zida zotengera mpweya.

Komabe, zinthu zabwino kwambiri za nayiloni yotentha kwambiri zimatha kubweretsa zabwino zambiri kwa ogwiritsa ntchito, ndipo posintha kuchokera ku PA6, PA66 kapena PET/PBT zida kupita ku PPA, palibe chifukwa chosinthira zisankho, ndi zina zotere, kotero ndizoyenera kugwiritsa ntchito zosiyanasiyana. kufuna kukana kutentha kwambiri.Pali ziyembekezo zazikulu.