Wolemba Andy wochokera ku fakitale ya Baiyear
Idasinthidwa Novembala 2, 2022
Nawa likulu la nkhani zamakampani opanga jakisoni a Baiyear.Kenako, Baiyear agawa njira yopangira jekeseni muzolemba zingapo kuti adziwe kusanthula kwa zida zopangira jekeseni, chifukwa pali zambiri.Chotsatira ndi nkhani yachisanu.
(10).POM (Saigang)
1. Kuchita kwa POM
POM ndi pulasitiki ya crystalline, kukhazikika kwake ndikwabwino kwambiri, komwe kumadziwika kuti "race steel".POM ndi zinthu zolimba komanso zotanuka zomwe zimakana kukwawa bwino, kukhazikika kwa geometric komanso kukana kutentha ngakhale kutentha pang'ono, kukana kutopa, kukana kugwa, kukana kuvala, kukana kutentha ndi zina zabwino kwambiri.
POM si yosavuta kuyamwa chinyezi, mphamvu yokoka yeniyeni ndi 1.42g/cm3, ndipo kuchuluka kwa shrinkage ndi 2.1% (kuchuluka kwa crystallinity kwa POM kumapangitsa kuti ikhale yotsika kwambiri, yomwe imatha kufika 2% ~ 3.5 %, yomwe ndi yayikulu.Kwa zida zolimbikitsira zosiyanasiyana Pali mitengo yocheperako yosiyana), kukula kwake kumakhala kovuta kuwongolera, ndipo kutentha kosokoneza kutentha ndi 172 ° C. Ma POM amapezeka muzinthu zonse za homopolymer ndi copolymer.
Zida za homopolymer zili ndi ductility zabwino komanso mphamvu zotopa, koma sizosavuta kuzikonza.Zipangizo za Copolymer zili ndi kukhazikika kwamafuta ndi mankhwala ndipo ndizosavuta kuzikonza.Zida zonse za homopolymer ndi copolymer ndi zida zamakristali ndipo sizimamwa chinyezi mosavuta.
2. Makhalidwe a ndondomeko ya POM
POM sifunika kuuma musanakonze, ndipo ndi bwino kutenthetsa (pafupifupi 100 ° C) panthawi yokonza, zomwe ndi zabwino kukhazikika kwazinthu.Kutentha kwa kutentha kwa POM ndikocheperako (195-215 ℃), ndipo kumatha kuwola ngati kukakhala mumbiya kwa nthawi yayitali kapena kutentha kumapitilira 220 ℃ (190 ~ 230 ℃ pazinthu za homopolymer; 190 ~ 210 ℃ kwa zinthu za copolymer).Kuthamanga kwa screw sikuyenera kukhala kokwera kwambiri, ndipo kuchuluka kotsalira kuyenera kukhala kochepa.
Zogulitsa za POM zimachepa kwambiri (kuti muchepetse kuchepa kwa shrinkage pambuyo pa kuumba, kutentha kwa nkhungu kungagwiritsidwe ntchito), ndipo n'kosavuta kufota kapena kupunduka.POM imakhala ndi kutentha kwakukulu kwapadera komanso kutentha kwa nkhungu (80-105 ° C), ndipo mankhwalawa ndi otentha kwambiri atatha kugwetsa, choncho m'pofunika kuteteza zala kuti zisawonongeke.Kuthamanga kwa jekeseni ndi 700 ~ 1200bar, ndipo POM iyenera kupangidwa pansi pa zovuta zapakati, kuthamanga kwapakati ndi kutentha kwa nkhungu.
Othamanga ndi zipata angagwiritse ntchito mtundu uliwonse wa chipata.Ngati chipata cha ngalande chikugwiritsidwa ntchito, ndi bwino kugwiritsa ntchito mtundu waufupi.Othamanga otentha a nozzle akulimbikitsidwa kuti apange zida za homopolymer.Onse othamanga otentha mkati ndi othamanga kunja otentha angagwiritsidwe ntchito pazinthu za copolymer.
3. Magwiritsidwe osiyanasiyana:
POM ili ndi coefficient yotsika kwambiri ya kukangana komanso kukhazikika kwa geometric, makamaka koyenera kupanga magiya ndi mayendedwe.Popeza imakhalanso ndi katundu wotsutsa kutentha kwambiri, imagwiritsidwanso ntchito pazida zamadzimadzi (ma valves a mapaipi, nyumba zapampu), zida za udzu, ndi zina zotero.
(11), PC (zomatira zipolopolo)
1. Kuchita kwa PC
Polycarbonate ndi utomoni wa thermoplastic womwe uli ndi-- [ORO-CO] -zolumikizira mu unyolo wa tsitsi.Malinga ndi magulu osiyanasiyana a ester mu kapangidwe ka maselo, amatha kugawidwa m'magulu a aliphatic, alicyclic ndi aliphatic-onunkhira.Mtengo wake ndi wonunkhira wa polycarbonate, ndipo bisphenol A mtundu wa polycarbonate ndi wofunikira kwambiri, ndipo kulemera kwa molekyulu nthawi zambiri kumakhala 30,000-100,000.
PC ndi amorphous, odorless, non-toxic, kwambiri mandala colorless kapena pang'ono yellow thermoplastic engineering pulasitiki ndi katundu kwambiri thupi ndi makina, makamaka kwambiri kukana mphamvu, mkulu kumakanika mphamvu, flexural mphamvu ndi compressive mphamvu;Kulimba kwabwino, kutentha kwabwino komanso kukana kwanyengo, kosavuta kukongoletsa, kuyamwa kwamadzi otsika.
Kutentha kwa kutentha kwa PC ndi 135-143 ° C, ndi kukwawa kwakung'ono ndi kukula kokhazikika;ili ndi kukana kwabwino kwa kutentha ndi kukana kutentha kochepa, ndipo imakhala ndi makina okhazikika, kukhazikika kwazithunzi, mphamvu zamagetsi ndi kukana kutentha kwakukulu.Kutentha, angagwiritsidwe ntchito kwa nthawi yaitali pa -60 ~ 120 ℃;palibe malo osungunuka oonekera, ndi osungunuka pa 220-230 ℃;chifukwa cha kuuma kwakukulu kwa unyolo wa maselo, kukhuthala kwa resin kusungunula kumakhala kwakukulu;kuchuluka kwa mayamwidwe amadzi ndikochepa, ndipo kuchuluka kwa shrinkage kumakhala kochepa (kawirikawiri 0.1 % ~ 0.2%), kulondola kwapamwamba kwambiri, kukhazikika bwino kwa mawonekedwe, komanso kutsika kwa mpweya wa filimuyo;ndi chinthu chozimitsa chokha;khola ku kuwala, koma osati UV zosagwira, ndipo ali ndi nyengo yabwino kukana;
Kukana kwa mafuta, kukana kwa asidi, kukana kwamphamvu kwa alkali, asidi oxidizing, amine, ketone, kusungunuka mu ma hydrocarboni a chlorinated ndi zosungunulira zonunkhira, kuletsa mabakiteriya, kuletsa moto ndi kuipitsidwa, kosavuta kuyambitsa hydrolysis ndi kusweka m'madzi kwa nthawi yayitali, Kuipa kwake ndi kuti sachedwa kupsinjika maganizo chifukwa cha kusatopa kwabwino, kusagwira bwino kwa zosungunulira, kusayenda bwino kwamadzi komanso kusavala bwino.PC imatha kupangidwa jekeseni, kutulutsa, kuumbidwa, kuwomba thermoformed, kusindikizidwa, kumangidwa, kuphimbidwa ndi makina, njira yofunika kwambiri yopangira jekeseni.
2. Njira makhalidwe a PC
Zinthu za PC zimakhudzidwa kwambiri ndi kutentha, kusungunuka kwake kusungunuka kumachepa kwambiri ndi kuwonjezeka kwa kutentha, kutuluka kumathamanga, ndipo sikukhudzidwa ndi kukakamizidwa.Zinthu za PC ziyenera kuuma kwathunthu musanakonze (pafupifupi 120 ℃, 3 ~ 4 maola), ndipo chinyezi chiyenera kuyendetsedwa mkati mwa 0.02%.Kuchuluka kwa chinyezi chomwe chimakonzedwa pakutentha kwambiri kumapangitsa kuti chinthucho chizitulutsa utoto wonyezimira, ulusi wasiliva ndi thovu, ndi PC kutentha kwapakatikati Imakakamiza kwambiri kupindika kwamphamvu.Kulimba kwamphamvu kwambiri, kotero kumatha kuzizira, kukokedwa, kuzizira ndi njira zina zozizira.
Zinthu za PC ziyenera kupangidwa pansi pa kutentha kwapamwamba, kutentha kwa nkhungu ndi kuthamanga kwambiri komanso kuthamanga kwapang'onopang'ono.Gwiritsani ntchito jekeseni wothamanga kwambiri pazipata zing'onozing'ono ndi jakisoni wothamanga kwambiri pazipata zamitundu ina.Ndi bwino kulamulira nkhungu kutentha pafupifupi 80-110 °C, ndi akamaumba kutentha makamaka 280-320 °C.Pamwamba pa chinthu cha PC chimakonda kuphulika kwa mpweya, malo amphuno amatha kukhala ndi mikwingwirima ya mpweya, kupanikizika kotsalira kwamkati kumakhala kwakukulu, ndipo ndikosavuta kusweka.
Choncho, akamaumba processing zofunika zipangizo PC ndi mkulu.Zida za PC zili ndi kuchepa pang'ono (0.5%) ndipo palibe kusintha kwa mawonekedwe.Zopangidwa kuchokera ku PC zitha kutsekedwa kuti zithetse nkhawa zawo zamkati.Kulemera kwa maselo a PC kwa extrusion kuyenera kukhala kwakukulu kuposa 30,000, ndipo pang'onopang'ono compression screw iyenera kugwiritsidwa ntchito, ndi chiŵerengero cha kutalika kwa m'mimba mwake cha 1: 18 ~ 24 ndi chiŵerengero cha 1: 2.5.Extrusion blowing, jekeseni-kuwomba, jekeseni-kukoka-kuwomba kungagwiritsidwe ntchito.Botolo lapamwamba, lowonekera kwambiri.
3. Mtundu wofananira wa ntchito:
Magawo atatu akuluakulu ogwiritsira ntchito ma PC ndi makampani opanga magalasi, makampani oyendetsa magalimoto ndi zamagetsi, mafakitale amagetsi, akutsatiridwa ndi zida zamakina, ma disc a kuwala, zovala za anthu wamba, makompyuta ndi zida zina zamaofesi, chithandizo chamankhwala ndi thanzi, filimu, zosangalatsa ndi zida zodzitetezera, ndi zina.
(12).EVA (rabara guluu)
1. Kuchita kwa EVA:
EVA ndi pulasitiki ya amorphous, yopanda poizoni, yokhala ndi mphamvu yokoka ya 0.95g/cm3 (yopepuka kuposa madzi).Mlingo wa shrinkage ndi waukulu (2%), ndipo EVA angagwiritsidwe ntchito ngati chonyamulira cha masterbatch color.
2.Makhalidwe a EVA:
EVA imakhala ndi kutentha kocheperako (160-200 ° C), mitundu yosiyanasiyana, ndipo kutentha kwa nkhungu kumakhala kochepa (20-45 ° C), ndipo zinthuzo ziyenera kuuma (kutentha kutentha kwa 65 ° C) musanayambe kukonza.Kutentha kwa nkhungu ndi kutentha kwa zinthu sikophweka kukhala kokwera kwambiri panthawi ya EVA processing, apo ayi pamwamba padzakhala wovuta (osati yosalala).Zogulitsa za EVA ndizosavuta kumamatira ku nkhungu yakutsogolo, ndipo ndikwabwino kupanga chomangira pabowo lozizira la ngalande yayikulu ya nozzle.Ndikosavuta kuwola ngati kutentha kupitilira 250 ℃.EVA iyenera kugwiritsa ntchito "kutentha kochepa, kuthamanga kwapakati ndi liwiro lapakati" pokonza zinthu.
(13), PVC (polyvinyl kolorayidi)
1. Magwiridwe a PVC:
PVC ndi pulasitiki ya amorphous yokhala ndi kukhazikika kosasunthika kwa kutentha ndipo imatha kuwonongeka chifukwa cha kutentha (kutentha kosayenera kusungunuka kumabweretsa mavuto a kuwonongeka kwa zinthu).PVC ndizovuta kuyaka (zabwino lawi retardancy), mkulu mamasukidwe akayendedwe, osauka fluidity, mkulu mphamvu, kukana nyengo ndi kwambiri kukhazikika geometric.Pogwiritsa ntchito, zida za PVC nthawi zambiri zimawonjezera zolimbitsa thupi, mafuta odzola, othandizira othandizira, ma pigment, othandizira kukana ndi zina.
Pali mitundu yambiri ya PVC, yogawidwa mu PVC yofewa, yokhazikika komanso yolimba, kachulukidwe ndi 1.1-1.3g / cm3 (yolemera kuposa madzi), mlingo wa shrinkage ndi waukulu (1.5-2.5%), ndipo mlingo wa shrinkage ndi otsika kwambiri, nthawi zambiri 0.2 ~ 0.6%, gloss pamwamba pa zinthu za PVC ndizosauka, (United States posachedwa idapanga PVC yowoneka bwino yofanana ndi PC).PVC imalimbana kwambiri ndi ma oxidizing agents, ochepetsera komanso ma acid amphamvu.Komabe, imatha kuipitsidwa ndi ma oxidizing acids okhazikika monga sulfuric acid ndi ndende ya nitric acid ndipo siyenera kukhudzana ndi ma hydrocarbon onunkhira ndi ma chlorinated hydrocarbon.
2. Makhalidwe a PVC:
Poyerekeza ndi PVC, processing kutentha osiyanasiyana ndi yopapatiza (160-185 ℃), processing ndi zovuta, ndi zofunika ndondomeko ndi mkulu.Nthawi zambiri, kuyanika sikufunika pakukonza (ngati kuyanika kumafunika, kuyenera kuchitika pa 60-70 ℃).Kutentha kwa nkhungu ndikotsika (20-50 ℃).
Pamene PVC ndi kukonzedwa, n'zosavuta kupanga mizere mpweya, mizere wakuda, etc. The processing kutentha ayenera mosamalitsa ankalamulira (processing kutentha 185 ~ 205 ℃), kuthamanga jekeseni kungakhale lalikulu monga 1500bar, ndi kuthamanga kugwira kungakhale zazikulu ngati 1000bar.Pofuna kupewa kuwonongeka kwa zinthu, nthawi zambiri Ndi liwiro lofananira la jekeseni, liwiro la screw liyenera kukhala lotsika (pansi pa 50%), kuchuluka kotsalira kuyenera kukhala kocheperako, ndipo kukakamiza kumbuyo kusakhale kokwera kwambiri.
Kutentha kwa nkhungu kuli bwino.Nthawi yokhala ndi zinthu za PVC mu mbiya yotentha kwambiri sayenera kupitirira mphindi 15.Poyerekeza ndi PVC, ndi bwino kugwiritsa ntchito zinthu zazikulu zamadzi mu guluu, ndipo ndi bwino kugwiritsa ntchito zikhalidwe za "kuthamanga kwapakatikati, kuthamanga pang'onopang'ono ndi kutentha kochepa" poumba ndi kukonza.Poyerekeza ndi zinthu za PVC, ndizosavuta kumamatira ku nkhungu yakutsogolo.Kuthamanga kwa nkhungu (gawo loyamba) sikuyenera kukhala kofulumira kwambiri.Ndi bwino kupanga nozzle mu dzenje ozizira zakuthupi wa wothamanga.Ndi bwino kugwiritsa ntchito PS nozzle material (kapena PE) kuyeretsa mbiya kuteteza kuwonongeka kwa PVC kutulutsa Hd↑, yomwe imawononga wononga ndi khoma lamkati la mbiya.Zipata zonse wamba zitha kugwiritsidwa ntchito.
Ngati machining ang'onoang'ono mbali, ndi bwino ntchito nsonga chipata kapena mitsinje chipata;pazigawo zokulirapo, chipata cha fan ndichabwino.Kuzama kwa chipata cha nsonga kapena chipata chomira pansi kuyenera kukhala 1mm;makulidwe a chipata cha fan sikuyenera kuchepera 1mm.
3. Magwiritsidwe osiyanasiyana:
Mapaipi operekera madzi, mapaipi apanyumba, mapanelo a khoma lanyumba, ma casings amakina ogulitsa, zopangira zamagetsi zamagetsi, zida zamankhwala, zonyamula chakudya, etc.
Kuti mupitilize, ngati mukufuna kudziwa zambiri, chonde omasuka kulumikizana nafe.Baiyear ndi fakitale yayikulu yophatikiza kupanga nkhungu ya pulasitiki, jekeseni ndi kukonza zitsulo.Kapena mutha kupitiliza kumvetsera nkhani zapatsamba lathu lovomerezeka: www.baidasy.com , tipitilizabe kukonzanso nkhani zachidziwitso zokhudzana ndi mafakitale opangira jekeseni.
Contact: Andy Yang
What's app : +86 13968705428
Email: Andy@baidasy.com
Nthawi yotumiza: Nov-29-2022
