Zipangizo zophatikizika zonse zimaphatikizidwa ndi ulusi wolimbitsa ndi pulasitiki. Udindo wa utomoni muzipangizo zophatikizika ndi wofunikira kwambiri. Kusankha utomoni kumatsimikizira mndandanda wa magawo a machitidwe, zina mwazinthu zamakanika ndi magwiridwe antchito (makhalidwe a kutentha, kuyaka, kukana chilengedwe, ndi zina zotero), mawonekedwe a utomoni ndi chinthu chofunikira kwambiri pakumvetsetsa mawonekedwe a makina azipangizo zophatikizika. Utomoni ukasankhidwa, zenera lomwe limazindikira kuchuluka kwa njira ndi mawonekedwe a utomoni limadziwikiratu zokha. Utomoni wopaka thermosetting ndi mtundu wa utomoni womwe umagwiritsidwa ntchito kwambiri popanga zinthu zophatikizika za resin matrix chifukwa cha kupanga bwino. Ma resin a thermoset amakhala pafupifupi amadzimadzi kapena theka-solid kutentha kwa chipinda, ndipo m'malingaliro mwake amakhala ngati ma monomers omwe amapanga utomoni wopaka thermoplastic kuposa utomoni wopaka thermoplastic mu mkhalidwe womaliza. Ma resin opaka thermosetting asanachiritsidwe, amatha kukonzedwa kukhala mawonekedwe osiyanasiyana, koma akachiritsidwa pogwiritsa ntchito zinthu zophikira, zoyambitsa kapena kutentha, sangapangidwenso chifukwa ma bond a mankhwala amapangidwa panthawi yophikira, zomwe zimapangitsa kuti mamolekyu ang'onoang'ono asinthidwe kukhala ma polima olimba olumikizidwa ndi magawo atatu okhala ndi kulemera kwakukulu kwa mamolekyu.
Pali mitundu yambiri ya ma resini a thermosetting, omwe amagwiritsidwa ntchito kwambiri ndi ma resini a phenolic,ma resini a epoxy, utomoni wa bis-horse, ma resini a vinyl, ma resins a phenolic, ndi zina zotero.
(1) Phenolic resin ndi utomoni woyambirira wokhazikika pa kutentha womwe umamatira bwino, umalimbana bwino ndi kutentha komanso umathandiza pa dielectric ukatha kuuma, ndipo mawonekedwe ake abwino kwambiri ndi omwe amaletsa moto, kutentha pang'ono, utsi wochepa, komanso kuyaka. Mpweya womwe umatuluka sukhala ndi poizoni wambiri. Kutha kukonzedwa bwino, ndipo zinthu zophatikizika zimatha kupangidwa pogwiritsa ntchito njira zopangira, kupotoza, kuyika manja, kupopera, ndi pultrusion. Zinthu zambiri zophatikizika zochokera ku phenolic resin zimagwiritsidwa ntchito popanga zinthu zokongoletsera mkati mwa ndege zankhondo.
(2)Utomoni wa epoxyndi matrix yoyambirira ya utomoni yomwe imagwiritsidwa ntchito m'mapangidwe a ndege. Imadziwika ndi zinthu zosiyanasiyana. Zothandizira kuchiritsa ndi zothamangitsa zosiyanasiyana zimatha kukhala ndi kutentha kosiyanasiyana kuyambira kutentha kwa chipinda mpaka 180 ℃; ili ndi mphamvu zapamwamba zamakanika; Mtundu wabwino wofananiza ulusi; kukana kutentha ndi chinyezi; kulimba kwabwino; kupangika bwino kwambiri (kuphimba bwino, kukhuthala pang'ono kwa utomoni, kusinthasintha kwabwino, bandwidth yopanikizika, ndi zina zotero); yoyenera kupangira zinthu zazikulu pamodzi; yotsika mtengo. Njira yabwino yopangira utomoni komanso kulimba kwapadera kwa utomoni wa epoxy kumapangitsa kuti ikhale yofunika kwambiri mu matrix ya utomoni wa zipangizo zamakono zophatikizika.
(3)Utomoni wa viniluimadziwika kuti ndi imodzi mwa ma resin abwino kwambiri osagwira dzimbiri. Imatha kupirira ma acid ambiri, ma alkali, mayankho amchere komanso zinthu zosungunulira zamphamvu. Imagwiritsidwa ntchito kwambiri popanga mapepala, makampani opanga mankhwala, zamagetsi, mafuta, kusungira ndi mayendedwe, kuteteza chilengedwe, zombo, Makampani Owunikira Magalimoto. Ili ndi mawonekedwe a polyester yosakhuta ndi epoxy resin, kotero ili ndi mawonekedwe abwino kwambiri a epoxy resin komanso magwiridwe antchito abwino a polyester yosakhuta. Kuphatikiza pa kukana dzimbiri kwapadera, mtundu uwu wa resin ulinso ndi kukana kutentha kwabwino. Ikuphatikiza mtundu wamba, mtundu wotentha kwambiri, mtundu woletsa moto, mtundu wokana kukhudzidwa ndi mitundu ina. Kugwiritsa ntchito vinyl resin mu pulasitiki yolimbikitsidwa ndi ulusi (FRP) kumadalira kwambiri malo ogwirira ntchito, makamaka polimbana ndi dzimbiri. Ndi chitukuko cha SMC, kugwiritsidwa ntchito kwake pankhaniyi kumawonekeranso.
(4) Utomoni wa bismaleimide wosinthidwa (wotchedwa utomoni wa bismaleimide) wapangidwa kuti ukwaniritse zofunikira za ndege zatsopano zankhondo za matrix a utomoni wophatikizana. Zofunikira izi zikuphatikizapo: zigawo zazikulu ndi ma profiles ovuta pa 130 ℃ Kupanga zigawo, ndi zina zotero. Poyerekeza ndi utomoni wa epoxy, utomoni wa Shuangma umadziwika kwambiri ndi chinyezi chapamwamba komanso kukana kutentha komanso kutentha kwakukulu kogwira ntchito; vuto ndilakuti kupanga sikwabwino ngati utomoni wa epoxy, ndipo kutentha kothira kumakhala kokwera (kothira pamwamba pa 185 ℃), ndipo kumafuna kutentha kwa 200 ℃. Kapena kwa nthawi yayitali kutentha kopitilira 200 ℃.
(5) Utomoni wa ester wa Cyanide (qing diacoustic) uli ndi dielectric constant yotsika (2.8~3.2) komanso dielectric loss tangent yaying'ono kwambiri (0.002~0.008), kutentha kwakukulu kwa kusintha kwa galasi (240~290℃), Kuchepa kochepa, kuyamwa chinyezi pang'ono, mphamvu zabwino kwambiri zamakaniko ndi mphamvu zomangira, ndi zina zotero, ndipo uli ndi ukadaulo wofanana ndi wa epoxy resin.
Pakadali pano, ma cyanate resins amagwiritsidwa ntchito makamaka m'mbali zitatu: ma circuit board osindikizidwa a zipangizo zomangira zamagetsi ndi zama frequency apamwamba, zotumizira mafunde amphamvu kwambiri komanso zipangizo zomangira zapamwamba zogwirira ntchito zapamlengalenga.
Mwachidule, epoxy resin, magwiridwe antchito a epoxy resin samangogwirizana ndi momwe zinthu zimagwiritsidwira ntchito, komanso makamaka zimadalira kapangidwe ka mamolekyu. Gulu la glycidyl mu epoxy resin ndi gawo losinthasintha, lomwe lingachepetse kukhuthala kwa resin ndikuwonjezera magwiridwe antchito, komanso nthawi yomweyo limachepetsa kukana kutentha kwa resin yochiritsidwa. Njira zazikulu zowongolera kutentha ndi makina a ma epoxy resin ochiritsidwa ndi kuchepa kwa mamolekyulu ndi magwiridwe antchito ambiri kuti awonjezere kuchulukana kwa crosslink ndikuyambitsa mapangidwe olimba. Zachidziwikire, kuyambitsa kapangidwe kolimba kumabweretsa kuchepa kwa kusungunuka ndikuwonjezeka kwa kukhuthala, zomwe zimapangitsa kuchepa kwa magwiridwe antchito a epoxy resin. Momwe mungakulitsire kukana kutentha kwa dongosolo la epoxy resin ndi gawo lofunika kwambiri. Kuchokera pamalingaliro a resin ndi wothandizira wochiritsa, magulu ogwira ntchito kwambiri, kuchuluka kwa kulumikiza kumakulirakulira. Tg. Ntchito yeniyeni ikakwera: Gwiritsani ntchito epoxy resin yogwira ntchito zambiri kapena wothandizira wochiritsa, gwiritsani ntchito epoxy resin yoyera kwambiri. Njira yomwe imagwiritsidwa ntchito kwambiri ndikuwonjezera gawo linalake la o-methyl acetaldehyde epoxy resin mu dongosolo lochiritsa, lomwe lili ndi zotsatira zabwino komanso mtengo wotsika. Kulemera kwapakati pa molekyulu kumakhala kwakukulu, kugawa kwa kulemera kwa molekyulu kumakhala kochepa, ndipo Tg imakhala yokwera. Ntchito yeniyeni: Gwiritsani ntchito resin ya epoxy yogwira ntchito zambiri kapena wothandizira kuchiritsa kapena njira zina zokhala ndi kugawa kofanana kwa kulemera kwa molekyulu.
Monga matrix ya resin yogwira ntchito kwambiri yomwe imagwiritsidwa ntchito ngati matrix yophatikizika, makhalidwe ake osiyanasiyana, monga kuthekera kogwirira ntchito, makhalidwe a thermophysical ndi makhalidwe a makina, ayenera kukwaniritsa zosowa za ntchito zothandiza. Kupanga kwa matrix ya resin kumaphatikizapo kusungunuka mu zosungunulira, kukhuthala kosungunuka (kusungunuka) ndi kusintha kwa kukhuthala, ndi kusintha kwa nthawi ya gel ndi kutentha (njira yogwirira ntchito). Kapangidwe ka resin formulation ndi kusankha kutentha kwa reaction kumatsimikiza kinetics ya reaction ya mankhwala (kuchuluka kwa kuchiritsa), makhalidwe a rheological a mankhwala (kukhuthala-kutentha motsutsana ndi nthawi), ndi thermodynamics ya reaction ya mankhwala (exothermic). Njira zosiyanasiyana zimakhala ndi zofunikira zosiyanasiyana za kukhuthala kwa resin. Nthawi zambiri, pa njira yozungulira, kukhuthala kwa resin nthawi zambiri kumakhala pafupifupi 500cPs; pa njira yopukutira, kukhuthala kwa resin kumakhala pafupifupi 800~1200cPs; pa njira yoyambitsa vacuum, kukhuthala kwa resin nthawi zambiri kumakhala pafupifupi 300cPs, ndipo njira ya RTM ikhoza kukhala yokwera, koma Nthawi zambiri, sidzapitirira 800cPs; Pa ndondomeko yokonzekera, kukhuthala kumafunika kukhala kokwera pang'ono, nthawi zambiri pafupifupi 30000 ~ 50000cPs. Zachidziwikire, zofunikira za kukhuthala kumeneku zimagwirizana ndi mawonekedwe a ndondomekoyi, zida ndi zipangizo zokha, ndipo sizili zokhazikika. Nthawi zambiri, pamene kutentha kukukwera, kukhuthala kwa utomoni kumachepa pa kutentha kotsika; komabe, pamene kutentha kukukwera, kuchiritsa kwa utomoni kumapitirira, m'njira ya kinetically, kutentha. Kuchuluka kwa kusinthasintha kumawonjezeka kawiri pa kuwonjezeka kulikonse kwa 10℃, ndipo kuyerekeza kumeneku kudakali kothandiza poyesa nthawi yomwe kukhuthala kwa dongosolo lothandizira kuchulukira kufika pa mfundo inayake yofunika kwambiri ya kukhuthala. Mwachitsanzo, zimatenga mphindi 50 kuti dongosolo la utomoni likhale ndi kukhuthala kwa 200cPs pa 100℃ kuti liwonjezere kukhuthala kwake kufika pa 1000cPs, ndiye kuti nthawi yomwe imafunika kuti dongosolo lomwelo la utomoni liwonjezere kukhuthala kwake koyambirira kuchokera pa zosakwana 200cPs mpaka 1000cPs pa 110℃ ndi pafupifupi mphindi 25. Kusankha magawo a ndondomekoyi kuyenera kuganizira mokwanira nthawi ya kukhuthala ndi gel. Mwachitsanzo, mu ndondomeko yoyambitsa vacuum, ndikofunikira kuonetsetsa kuti kukhuthala pa kutentha komwe kumagwiritsidwa ntchito kuli mkati mwa kuchuluka kwa kukhuthala komwe kumafunika pa ndondomekoyi, ndipo nthawi yogwiritsira ntchito utomoni pa kutentha kumeneku iyenera kukhala yayitali mokwanira kuti utomoniwo ulowetsedwe. Mwachidule, kusankha mtundu wa utomoni mu ndondomeko yojambulira kuyenera kuganizira mfundo ya gel, nthawi yodzaza ndi kutentha kwa zinthuzo. Njira zina zimakhala ndi vuto lofananalo.
Mu ndondomeko yopangira, kukula ndi mawonekedwe a gawo (monga nkhungu), mtundu wa mphamvu, ndi magawo a ndondomekoyi zimatsimikiza kuchuluka kwa kutentha ndi njira yotumizira misa ya ndondomekoyi. Resin imachiritsa kutentha kwa exothermic, komwe kumachitika chifukwa cha kupanga ma bond a mankhwala. Ma bond ambiri a mankhwala akapangidwa pa voliyumu ya unit pa unit nthawi, mphamvu zambiri zimatulutsidwa. Ma coefficients osinthira kutentha kwa ma resin ndi ma polima awo nthawi zambiri amakhala otsika kwambiri. Kuchuluka kwa kutentha komwe kumachotsa panthawi ya polymerization sikungafanane ndi kuchuluka kwa kutentha komwe kumapangidwa. Kuchuluka kwa kutentha kumeneku kumapangitsa kuti zochita za mankhwala zichitike mwachangu, zomwe zimapangitsa kuti zambiri. Kuchita izi kufulumira kumabweretsa kulephera kwa kupsinjika kapena kuwonongeka kwa gawolo. Izi ndizodziwika kwambiri popanga zigawo zazikulu zophatikizika, ndipo ndikofunikira kwambiri kukonza njira yopangira. Vuto la "kuchuluka kwa kutentha" komwe kumachitika chifukwa cha kuchuluka kwa exothermic kwa prepreg curating, komanso kusiyana kwa momwe zinthu zilili (monga kusiyana kwa kutentha) pakati pa zenera la padziko lonse lapansi ndi zenera la njira yapafupi zonse zimachitika chifukwa cha momwe mungayang'anire njira yopangira. "Kufanana kwa kutentha" mu gawolo (makamaka mbali ya makulidwe a gawolo), kuti "kukhale kofanana kwa kutentha" kumadalira dongosolo (kapena kugwiritsa ntchito) kwa "ukadaulo wina wa unit" mu "makina opanga". Pazigawo zoonda, popeza kutentha kwakukulu kudzafalikira m'chilengedwe, kutentha kumakwera pang'onopang'ono, ndipo nthawi zina gawolo silidzachira kwathunthu. Panthawiyi, kutentha kowonjezera kuyenera kugwiritsidwa ntchito kuti kumalize njira yolumikizirana, kutanthauza kutentha kosalekeza.
Ukadaulo wopangira zinthu zopangidwa ndi ... Kaya porosity ya gawolo ingalamuliridwe pansi pa vacuum pressure ndi magwiridwe ake angafikire magwiridwe antchito a autoclave cured laminate ndi muyezo wofunikira poyesa ubwino wa OoA prepreg ndi njira yake yopangira.
Kukula kwa ukadaulo wa OoA prepreg kunayamba chifukwa cha kupanga utomoni. Pali mfundo zitatu zazikulu pakupanga utomoni wa OoA prepreg: imodzi ndikuwongolera porosity ya ziwalo zoumbidwa, monga kugwiritsa ntchito ma resin owonjezera omwe amakonzedwa kuti achepetse volatile mu curving reaction; yachiwiri ndikuwongolera magwiridwe antchito a utomoni wokonzedwa kuti akwaniritse mawonekedwe a utomoni omwe amapangidwa ndi njira ya autoclave, kuphatikiza mawonekedwe a kutentha ndi mawonekedwe a makina; chachitatu ndikuwonetsetsa kuti prepreg ili ndi kuthekera kopanga bwino, monga kuonetsetsa kuti utomoni ukhoza kuyenda pansi pa kupanikizika kwa mpweya, kuonetsetsa kuti uli ndi moyo wautali wa viscosity komanso kutentha kokwanira kwa chipinda kunja kwa nthawi, ndi zina zotero. Opanga zinthu zopangira amapanga kafukufuku ndi chitukuko cha zinthu malinga ndi zofunikira pakupanga ndi njira zina. Malangizo akulu ayenera kuphatikizapo: kukonza mawonekedwe a makina, kuwonjezera nthawi yakunja, kuchepetsa kutentha, komanso kukonza chinyezi ndi kukana kutentha. Zina mwa kusinthaku kwa magwiridwe antchito ndizotsutsana. , monga kulimba kwambiri ndi kutentha kochepa. Muyenera kupeza malo oyenera ndikuganizira mokwanira!
Kuwonjezera pa kupanga utomoni, njira yopangira prepreg imalimbikitsanso kupanga OoA prepreg. Kafukufukuyu adapeza kufunika kwa njira zopangira vacuum za prepreg popanga ma laminates opanda porosity. Kafukufuku wotsatira wasonyeza kuti ma prepreg opangidwa ndi theka amatha kusintha bwino momwe mpweya umalowera. Ma prepreg a OoA amadzazidwa ndi theka, ndipo ulusi wouma umagwiritsidwa ntchito ngati njira zopangira mpweya wotulutsa utsi. Mpweya ndi zinthu zosasunthika zomwe zimakhudzidwa ndi kukhetsa gawolo zimatha kutulutsidwa kudzera munjira kotero kuti porosity ya gawo lomaliza ndi <1%.
Njira yopangira vacuum thumba ndi ya njira yopanda autoclave (OoA). Mwachidule, ndi njira yopangira yomwe imatseka chinthucho pakati pa nkhungu ndi thumba la vacuum, ndikukakamiza chinthucho pochotsa vacuum kuti chinthucho chikhale chopapatiza komanso champhamvu. Njira yayikulu yopangira ndi
Choyamba, chotulutsira kapena nsalu yotulutsa imayikidwa pa nkhungu yoyikamo (kapena pepala lagalasi). Prepreg imayesedwa malinga ndi muyezo wa prepreg yomwe imagwiritsidwa ntchito, makamaka kuphatikiza kuchuluka kwa pamwamba, kuchuluka kwa utomoni, zinthu zosinthasintha ndi zina za prepreg. Dulani prepreg malinga ndi kukula kwake. Mukadula, samalani ndi komwe ulusi ukupita. Kawirikawiri, kupotoka kwa ulusi kumafunika kukhala kochepera 1°. Lembani nambala ya ulusi uliwonse wobisala ndikulemba nambala ya prepreg. Mukayika zigawo, zigawo ziyenera kuyikidwa motsatira dongosolo loyika lomwe likufunika pa pepala lolemba, ndipo filimu ya PE kapena pepala lotulutsa liyenera kulumikizidwa motsatira ulusi, ndipo thovu la mpweya liyenera kutsatiridwa motsatira ulusi. Chotsukira chimafalitsa prepreg ndikuchikanda momwe zingathere kuti mpweya uchokere pakati pa zigawo. Mukayika, nthawi zina ndikofunikira kuyika ma prepreg, omwe ayenera kuyikidwa motsatira ulusi. Mu ndondomeko yoyikamo, kuyikamo ndi kuyikamo kochepa kuyenera kuchitika, ndipo mipata yoyikamo ya gawo lililonse iyenera kuzunguliridwa. Kawirikawiri, kusiyana kwa ma splicing a unidirectional prepreg ndi motere: 1mm; plaster yoluka imaloledwa kuphatikana, osati kuphatikana, ndipo m'lifupi mwake ndi 10 ~ 15mm. Kenako, samalani ndi vacuum pre-compaction, ndipo makulidwe a pre-pomping amasiyana malinga ndi zofunikira zosiyanasiyana. Cholinga chake ndikutulutsa mpweya womwe wagwidwa mu layup ndi volatile mu prepreg kuti zitsimikizire kuti mkati mwa gawolo muli bwino. Kenako pali kuyika zinthu zothandizira ndi vacuum bagging. Kutseka ndi kuchiritsa thumba: Chofunikira chomaliza ndikulephera kutulutsa mpweya. Dziwani: Malo omwe nthawi zambiri pamakhala kutuluka mpweya ndi cholumikizira chotseka.
Timapangansofiberglass direct roving,mphasa za fiberglass, maukonde a fiberglass, ndinsalu yoluka ya fiberglass.
Lumikizanani nafe :
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Email:marketing@frp-cqdj.com
Nthawi yotumizira: Meyi-23-2022
