Pakali pano, ambiri jekeseni nkhungu processing opanga kwenikweni ntchitojakisoni wa bakelitemakina omangira ndijekeseni wapulasitikimakina omangira.Pali kusiyana kosiyana pakati pa Dewei kuponyera bakelite jekeseni makina akamaumba ndi pulasitiki jekeseni akamaumba makina.Bakelite ndi PF (phenolic utomoni).Bakelite ndi mtundu wapulasitiki wotsogola kwambiri, womwe udapanga mafakitale ku United States mu 1910. Tiyeni tiwone kusiyana kwake?
Zida zopangira bakelite zimakhala ndi phenols ndi aldehydes, ndipo phenol ndi formaldehyde zimagwiritsidwa ntchito kwambiri.Iwo akamagwira polycondensation pansi catalysis wa asidi, zamchere ndi catalysts ena.Kupanga mafakitale makamaka kumaphatikizapo ndondomeko youma ndi ndondomeko yonyowa.
Phenol ndi aldehyde amatha kutulutsa mitundu iwiri ya PF pansi pa zoyambitsa zosiyanasiyana: imodzi ndi thermoplastic PF ndipo ina ndi thermosetting PF.Yoyambayo imatha kuchiritsidwa m'thupi pokhapokha powonjezera machiritso ndi kutenthetsa, pomwe yotsirizirayo imatha kukhala mawonekedwe a thupi bola ngati kutentha popanda kuchiritsa.
Kaya thermoplastic pf kapena thermosetting PF, maukonde okhawo omwe amapangidwa ndi machiritso angagwiritsidwe ntchito.Njira yochiritsa ndiyo kupitiriza kwa kuchuluka kwa polycondensation ndi kupanga chomaliza chochuluka.Izi ndizosiyana ndi kusungunuka ndi kuchiritsa kwa thermoplastic wamba.Ndiwosasinthika, kuphatikiza zonse zakuthupi ndi zamankhwala.
PF ikhoza kupangidwa ndi njira yofanana ndi thermoplastic.Pf yogwiritsidwa ntchito popanga jekeseni imafuna madzi abwino, kuumba pansi pa jekeseni wochepa, kusungunuka kwa kutentha kwambiri komanso kuthamanga kwachangu, gloss yabwino pamwamba pa zigawo za pulasitiki, kupukuta kosavuta komanso kusaipitsa nkhungu.Komabe, kuumba jekeseni kulinso ndi zofooka zake.Mwachitsanzo, kusungunula kumachepa ndi mtundu wa filler, sikuli koyenera kuumba mbali zapulasitiki zokhala ndi zowonjezera zambiri, ndipo zipata zambiri ndi njira zowonongeka pambuyo pa kuchiritsa sizingasinthidwenso ndipo zikhoza kutayidwa.
Mwachidule, thermoplastic PF imatha kupangidwa ndi makina opangira jakisoni wamba, koma momwe zimakhalira ziyenera kuyendetsedwa bwino.Thermosetting pf iyenera kupangidwa ndi makina opangira jakisoni apadera a PF (mbiya ndi zomata ndizosiyana ndi makina wamba omangira jakisoni), ndipo nkhungu iyeneranso kugwiritsa ntchito kapangidwe kapadera!
Sino Vision Vehicle & Service Co., Limited, yomwe ili ku Huangyan Town, Taizhou, imayang'ana kwambiri pokonza jekeseni monga bakelite, jekeseni wa BMC ndi jekeseni wapulasitiki.Zopangira jekeseni za Bakelite ndi BMC zimagwiritsidwa ntchito kwambiri mumitundu yonse yazitsulo zakukhitchini, zamagetsi zamagetsi ndi zida zapanyumba.kampaniyo ali amphamvu uinjiniya ndi luso gulu, amene anadzipereka kulenga mankhwala ndi apamwamba ndi mtengo wokongola makasitomala, amene angathe kukwaniritsa zosiyanasiyana processing zosowa makasitomala.
Nthawi yotumiza: Aug-23-2021