Zuwan bakelite yana da matukar muhimmanci ga ci gaban masana'antu

Hanyar shiryawa

Za'a iya shirya resin phenolic da fili na aldehyde ta hanyar amsawar polycondensation a ƙarƙashin aikin acidic ko mai haɓakawa na asali. Cikakken guduro phenolic da sawnwood foda, talc (filler), urotropine (maganin warkarwa), stearic acid (mai mai), pigment, da dai sauransu, da zafi da knead a cikin mahaɗin don samun foda bakelite. Foda na bakelite yana mai zafi kuma yana matsawa a cikin wani nau'i don samun samfurin filastik phenolic mai zafi.

disadvantages

The shortcomings na phenolic resins ne matalauta inji Properties kuma ba su da juriya ga mai da sinadarai lalata. Domin shawo kan lahani na sama, mutane sun canza resin phenolic. Ƙara filaye daban-daban zuwa resin phenolic na iya samun ingantattun resin phenolic tare da ayyuka daban-daban. Filastik, kamar ƙara asbestos da mica a cikin sinadarai, na iya ƙara juriya na acid, juriya na alkali, da juriya, kuma ana iya amfani da su azaman kayan kayan aikin sinadarai da na'urorin haɗi don motoci da motoci; ƙara gilashin gilashi zai iya ƙara ƙarfi kuma za'a iya amfani dashi azaman sassa na inji Bayan an gyara shi tare da robar nitrile, juriya na man fetur da ƙarfin tasiri yana inganta sosai; bayan gyare-gyare tare da polyvinyl chloride, zai iya inganta ƙarfin injiniya da juriya na acid.

Tushen Raw Materials

Filayen phenolic suna da wadata a cikin albarkatun ƙasa, mai sauƙi a cikin kira machining bakelite, arha a farashi, kuma suna da kyakkyawan aiki. Har yanzu sune robobi mafi girma na thermosetting a duniya.

Halayen jiki

Filastik phenolic abu ne mai ƙarfi kuma mai karyewa.
Halayen bakelite ba su da sha, marasa ƙarfi, juriya mai zafi, ƙarfin ƙarfi, kuma galibi ana amfani da su a cikin kayan lantarki. Saboda babban rufin da filastik kamar itace, ana kiransa "bakelite". Bakelite an yi shi da foda mai phenolic resin, wanda aka haɗe da sawdust, asbestos ko yumbu, sa'an nan kuma danna cikin samfurin da aka gama a babban zafin jiki. Guduro na phenolic shine guduro na roba na farko a duniya.
Phenolic filastik (bakelite): saman yana da wuya, gaggautsa kuma maras ƙarfi, kuma akwai sautin itace lokacin da aka buga shi. Yawancin su ba su da haske da duhu (launin ruwan kasa ko baki). Insulator ne, babban bangarensa shine guduro phenolic.
Tsarin tsari

• 1. Kyakkyawan tsari, amma raguwa da shugabanci gabaɗaya sun fi robobin amino girma, kuma suna ƙunshe da gurɓataccen ruwa. Ya kamata a yi preheated kafin gyare-gyaren, kuma ya kamata a gaji yayin gyare-gyare. Idan ba a rigaya ba, ya kamata a ƙara yawan zafin jiki da gyare-gyare.
• 2. Yanayin zafin jiki yana da tasiri mai girma akan ruwa. Gabaɗaya, lokacin da zafin jiki ya wuce digiri 160, ruwa zai ragu da sauri.
• 3. Saurin warkewa gabaɗaya yana da hankali fiye da robobin amino, kuma zafin da ake fitarwa yayin warkewa yana da girma. Zazzabi na ciki na manyan sassan filastik masu kauri mai kauri yakan yi tsayi da yawa, wanda ke da saurin taurare da zafi.

Lokacin da formaldehyde / phenol (molar rabo) ya kasa da 1, ana iya samun samfurin thermoplastic, wanda ake kira thermoplastic phenolic guduro, wato, resin novolak phenolic, wanda ba ya ƙunshi ƙarin ƙungiyoyin polycondensation, kuma za'a iya warkewa ta hanyar ƙara. wakili mai warkarwa da dumama. Misali, ta yin amfani da hexamethylenetetramine a matsayin wakili na warkewa, zazzabin warkewa shine 150 ℃, kuma foda mai gyare-gyaren da aka haɗe da filler an fi sani da bakelite foda. Lokacin da formaldehyde / phenol (molar rabo) ya fi 1, matakin farko guduro, watau thermosetting phenolic guduro, za a iya samu a karkashin alkali catalysis, wanda za a iya narkar da a Organic kaushi. Guduro matakin farko ya ƙunshi hydroxymethyl wanda za'a iya ƙara polycondensed, don haka babu buƙata Ana iya warkewa ta hanyar ƙara wakili mai warkarwa: resin matakin B yana samuwa ta hanyar amsawa a ƙarƙashin dumama, wanda kuma aka sani da resin phenolic Semi-soluble, wanda ba shi da ƙarfi. kuma infusible amma yana iya kumbura da laushi. Bayan ƙarin amsawa, an sami wani tsari na jikin da ba a iya narkewa kuma ba a iya warware shi ba guduro matakin C-stage, wanda kuma aka sani da guduro phenolic maras narkewa. Guduro a mataki na A kuma yana iya warkewa da kanta na dogon lokaci.
The waraka nau'i na thermosetting phenolic guduro ya kasu kashi biyu iri: al'ada zazzabi curing da thermal curing. Maganin zafin jiki na yau da kullun na iya amfani da wakili mai warkarwa na al'ada wanda ba mai guba ba, ko benzenesulfonyl chloride ko petroleum sulfonic acid, amma kayan biyu na ƙarshe sun fi mai guba da ban haushi.

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PTJ® yana ba da cikakken kewayon Custom daidaici cnc machina china sabis. ISO 9001: 2015 & AS-9100 bokan. 3, 4 da 5-axis saurin daidaito Cibiyar CNC ayyuka ciki har da niƙa, juyawa ga takamaiman kwastomomi, Caparfin ƙarfe & kayan aikin roba tare da haƙuri +/- 0.005 mm.Sakarantun sakandare sun haɗa da CNC da nika na al'ada, hakowa,mutu Fitar,karfe da kuma stam.Yawan samfoti, cikakken kayan aiki, tallafi na fasaha da cikakken dubawa mota, jirgin sama mai saukar ungulu, gyare-gyare & tsayarwa, jagoran haske,likita, keke, da mabukaci kayan lantarki masana'antu. Isarwar lokacin-lokaci.Ka gaya mana kadan game da kasafin kudin aikin ku da lokacin isowar sa ran ku. Zamu tsara tare da ku don samar da ayyuka mafi tsada don taimaka muku don isa ga burin ku, Maraba da Tuntube mu ( sales@pintejin.com ) kai tsaye don sabon aikin ku.