By Andy daga masana'antar Baiyear
An sabunta ta Nuwamba 2, 2022
Anan shine cibiyar labarai ta masana'antar gyaran allura ta Baiyear.Bayan haka, Baiyear zai raba tsarin yin gyare-gyaren allura zuwa labarai da yawa don gabatar da nazarin albarkatun kayan aikin gyaran allura, saboda akwai abun ciki da yawa.Na gaba shine labarin na shida.
(14).PPO (polyphenylene ether)
1. Ayyukan PPO
Polyphenylene oxide shine poly-2,6-dimethyl-1,4-phenylene oxide, wanda kuma aka sani da polyphenylene oxide, sunan Ingilishi Polyphenyleneoxiole (wanda ake magana da shi a matsayin PPO), an canza polyphenylene ether tare da polystyrene ko wasu polymers.Jima'i polyphenylene ether, ake magana a kai a matsayin MPPO.
PPO (NORLY) filastik injiniya ne tare da ingantattun kaddarorin.Yana da mafi girma taurin fiye da PA, POM da PC, babban inji ƙarfi, mai kyau rigidity, mai kyau zafi juriya ( thermal nakasawa zazzabi ne 126 ℃), da kuma high girma da kwanciyar hankali (shrinkage zafin jiki).adadin 0.6%), ƙarancin sha ruwa (kasa da 0.1%).Rashin hasara shi ne cewa ba shi da kwanciyar hankali ga haskoki na ultraviolet, farashin yana da girma, kuma sashi yana da ƙananan.
PPO ba mai guba ba ne, m, yana da ƙananan ƙarancin dangi, kuma yana da kyakkyawan ƙarfin injiniya, juriya na shakatawa, juriya mai raɗaɗi, juriya mai zafi, juriya na ruwa, da juriya na ruwa.Kyawawan kaddarorin lantarki a cikin kewayon zafin jiki da bambance-bambancen mita, babu hydrolysis, ƙananan gyare-gyaren gyare-gyare, ƙarancin wuta da kashe kai, ƙarancin juriya ga inorganic acid, alkalis, hydrocarbons aromatic, halogenated hydrocarbons, mai, da dai sauransu, mai sauƙin kumburi Ko kuma. tashin hankali na damuwa, babban rashin amfani shine rashin narkewar ruwa mara kyau, aiki mai wuyar gaske da kuma kafawa, yawancin aikace-aikacen aikace-aikacen su ne MPPO (PPO blends ko alloys), irin su gyaran PS na PPO, na iya inganta aikin sarrafawa, inganta haɓaka juriya da tasiri. Juriya Ayyuka, rage farashin, kawai ragewa kaɗan a cikin juriya na zafi da sheki.
polymers da aka gyara sun haɗa da PS (ciki har da HIPS), PA, PTFE, PBT, PPS da daban-daban elastomers, polysiloxane, PS gyare-gyaren PPO paraffin, mafi girma samfurin, MPPO shine mafi yawan amfani da kayan aikin injiniya na filastik.Manyan nau'ikan MPPO sune PPO/PS, PPO/PA/elastomers da PPO/PBT elastomer alloys.
2. Tsarin tsari na PPO:
PPO yana da babban narke danko, rashin ruwa mara kyau, da yanayin aiki mai girma.Kafin sarrafawa, ana buƙatar bushe shi a zafin jiki na 100-120 ° C na tsawon sa'o'i 1-2, zazzabin gyare-gyaren shine 270-320 ° C, kuma mafi kyawun zafin jiki ana sarrafa shi a 75-95 ° C.sarrafawa.A cikin tsarin samar da wannan filastik giya na filastik, tsarin jigilar jet (tsarin serpentine) yana da sauƙi don samar da shi a gaban bututun ƙarfe, kuma tashar kwararar bututun ya fi girma.
Mafi ƙarancin kauri daga 0.060 zuwa 0.125 inci don daidaitaccen gyare-gyare da 0.125 zuwa 0.250 inci don kumfa na tsari, kuma flammability ya tashi daga UL94 HB zuwa VO.
3.Tsarin aikace-aikace na yau da kullun:
PPO da MPPO za a iya sarrafa ta daban-daban aiki hanyoyin kamar allura gyare-gyare, extrusion, busa gyare-gyaren, gyare-gyaren, kumfa da electroplating, injin shafi, bugu inji sarrafa, da dai sauransu, saboda high narke danko da kuma high aiki zafin jiki.
Ana amfani da PPO da MPPO a cikin kayan lantarki, motoci, kayan gida, kayan aiki na ofis da kayan aikin masana'antu, da dai sauransu, ta yin amfani da MPPO don juriya na zafi, juriya mai tasiri, kwanciyar hankali mai girma, juriya, da juriya na peeling;
Fenti da kaddarorin lantarki: ana amfani da su don yin dashboards na mota, grid na radiator, grilles na magana, consoles, akwatunan fuse, akwatunan relay, masu haɗawa, murfin dabaran;An yi amfani da shi sosai a masana'antar lantarki da lantarki don kera masu haɗawa, iska mai ƙarfi Spools, sauya sheka, kayan gyara kayan aiki, manyan nunin lantarki, masu iya canzawa, na'urorin haɗin baturi, microphones da sauran abubuwan haɗin gwiwa.
Ana amfani da kayan aikin gida don talabijin, kyamarori, kaset na bidiyo, na'urar rikodin kaset, na'urar sanyaya iska, dumama, tukunyar shinkafa da sauran sassa.Ana iya amfani da shi azaman sassa na waje da abubuwan haɗin gwiwa don masu kwafi, tsarin kwamfuta, firintocin, injin fax, da sauransu. kayan aikin tiyata, sterilizer da sauran sassan kayan aikin likita.
Ana iya amfani da gyare-gyaren gyare-gyare mai girma don manyan sassa na mota kamar su masu ɓarna, bumpers, da ƙananan kumfa.Ya dace da samar da samfurori masu girma tare da tsayin daka, kwanciyar hankali mai girma, kyakkyawan sautin sauti, da kuma hadaddun sifofi na ciki, irin su nau'i-nau'i daban-daban na na'ura, tushe, ciki Bakwai da zane suna da 'yanci mai girma, kuma samfurin yana da nauyi.
(15).PBT polybutylene terephthalate
1. Ayyukan PBT:
PBT yana ɗaya daga cikin mafi girman injin thermoplastics.Wani abu ne na Semi-crystalline tare da kyakkyawan kwanciyar hankali na sinadarai, ƙarfin injina, kayan kariya na lantarki da kwanciyar hankali na thermal.Wadannan kayan suna da kwanciyar hankali mai kyau a cikin yanayi mai yawa na yanayi, kuma PBT yana da raunin hygroscopic Properties.Ƙarfin jujjuyawar PBT mara ƙarfi shine 50MPa, kuma ƙarfin juzu'i na nau'in ƙari na gilashin PBT shine 170MPa.Ƙarar gilashin da yawa zai sa kayan ya zama gaggautuwa.
PBT;crystallization yana da sauri sosai, wanda zai haifar da nakasar lankwasawa saboda rashin daidaituwa.Domin kayan da gilashin Additives, da shrinkage a cikin tsari shugabanci za a iya rage, amma shrinkage a cikin shugabanci perpendicular ga tsari ne m guda da na talakawa kayan.
Matsakaicin raguwar kayan gabaɗaya shine tsakanin 1.5% da 2.8%.Abubuwan da ke ɗauke da abubuwan ƙara gilashin 30% suna raguwa tsakanin 0.3% da 1.6%.Matsayin narkewa (225% ℃) da zafin nakasar zafin jiki sun yi ƙasa da kayan PET.Zazzabi mai laushi na Vicat yana kusan 170 ° C.Matsakaicin canjin gilashin (gilashin trasitiotemperature) yana tsakanin 22 ° C da 43 ° C.
Saboda yawan crystallization na PBT, danko yana da ƙasa sosai, kuma lokacin sake zagayowar kayan aikin filastik gabaɗaya ƙasa ce.
2. Tsarin tsari na PBT:
Drying: Wannan abu yana da sauƙi na ruwa a yanayin zafi mai zafi, don haka bushewa kafin aiki yana da mahimmanci.Shawarar bushewa yanayi a cikin iska ne 120C for 6 ~ 8 hours, ko 150C for 2 ~ 4 hours.
Dole ne danshi ya zama ƙasa da 0.03%.Idan bushewa tare da na'urar bushewa na hygroscopic, yanayin shawarar shine 150 ° C na awanni 2.5.The aiki zafin jiki ne 225 ~ 275 ℃, da shawarar zafin jiki ne 250 ℃.Ga unreinforced abu, da mold zafin jiki ne 40 ~ 60 ℃.Ya kamata a tsara tashar sanyaya ta mold da kyau don rage lankwasawa na ɓangaren filastik.Dole ne zafin zafi ya kasance da sauri kuma har ma.
Matsakaicin shawarar diamita na tashar sanyaya mold shine 12mm.Matsin allurar yana da matsakaici (har zuwa 1500bar), kuma gudun allurar ya kamata ya kasance da sauri kamar yadda zai yiwu (saboda PBT yana ƙarfafawa da sauri).Mai gudu da kofa: Ana ba da shawarar yin amfani da mai gudu madauwari don ƙara yawan watsawar matsa lamba (ƙwaƙwalwar dabara: diamita mai gudu = ɓangaren filastik + 1.5mm).
Ana iya amfani da ƙofofi iri-iri.Hakanan za'a iya amfani da masu gudu masu zafi, amma ya kamata a kula don hana yadu da lalata kayan.Diamita na ƙofar ya kamata ya kasance tsakanin 0.8 ~ 1.0 * t, inda t shine kauri na ɓangaren filastik.Idan kofa ce mai nitsewa, ana ba da shawarar mafi ƙarancin diamita na 0.75mm.
3.Tsarin aikace-aikace na yau da kullun:
kayan aikin gida (fis ɗin sarrafa abinci, abubuwan tsabtace injin, masu shayar da wutar lantarki, wuraren bushewar gashi, kayan kofi, da sauransu), abubuwan lantarki (masu sauya, gidajen mota, akwatunan fis, maɓallan maɓallin kwamfuta, da sauransu), Masana'antar kera motoci (grilles mai radiyo, da sauransu), bangarori na jiki, murfin dabaran, abubuwan kofa da taga, da sauransu.
An shigo da ilimi da yawa a wannan fanni.Don ƙarin ilimin, Baiyear zai sabunta shi da wuri-wuri.Za mu ko da yaushe sabunta roba albarkatun kasa, allura gyare-gyaren, allura gyare-gyaren kayan aiki gabatarwar, mold zane, mold sassaka, mold yin kayan aiki gabatarwar, sheet karfe sarrafa, Ilimin labarai kan rarraba akwatin samar, karfe samar da akwatin samar, sheet karfe sarrafa kayan gabatarwa, hana ruwa akwatin junction, murfin taga mai hana ruwa ruwa, da sauransu. Idan kuna sha'awar ilimin da ke sama, zaku iya tuntuɓar ni a kowane lokaci, zan yi farin cikin yi muku hidima kuma ina sa ran zuwanku.
Adireshin: Andy Yang
Menene app: +86 13968705428
Email: Andy@baidasy.com
Lokacin aikawa: Nuwamba-29-2022
