Yakareba fiber reinforced thermoplastics (LFRT) iri kushandiswa mumajekiseni ekuumba maapplication ane akakwira mechanic properties.Kunyangwe tekinoroji yeLFRT inogona kupa simba rakanaka, kuomarara uye maitiro ekugadzirisa, iyo nzira yekugadzirisa yechinyorwa ichi inoita basa rakakosha pakuona kuti chii chinogona kuitwa chikamu chekupedzisira.
Kuti ubudirire kuumba LFRT, zvinodikanwa kuti unzwisise mamwe maitiro avo akasiyana.Kunzwisisa mutsauko uripo pakati peLFRT uye yakajairwa yakasimbiswa thermoplastics yakasimudzira kugadzirwa kwemidziyo, kugadzira uye kugadzira tekinoroji kuti kuwedzere kukosha uye kugona kweLFRT.
Musiyano uripo pakati peLFRT uye yechinyakare kupfupika uye pfupi girazi fiber reinforced composites ndiko kureba kwefiber.MuLFRT, kureba kwefiber kwakafanana nekureba kwepellets.Izvi zvinodaro nekuti mazhinji maLFRT anogadzirwa nepultrusion pane kuveura kusanganisa.
MuLFRT kugadzira, iyo inoenderera tow yegirazi fiberuntwisted roving inotanga kudhonzwa mufa yekuputira uye kuiswa neresin.Mushure mekubuda mufa, iyi inoenderera yakasimbiswa yepurasitiki tambo inochekwa kana pelletized, kazhinji Cheka kusvika kureba 10 ~ 12mm.Kusiyana neizvi, zvechinyakare girazi faibha macomposites anongove akachekwa fiber ane kureba kwe3 kusvika 4 mm, uye kureba kwawo kunozodzikiswa kusvika pasi pe2 mm mushear extruder.
Iyo fiber kureba muLFRT pellets inobatsira kuvandudza mechanical properties yeLFRT-impact resistance kana kuoma kunowedzera uchichengetedza kuoma.Chero bedzi mafibhi achichengetedza hurefu hwawo panguva yekuumba, anozogadzira "skeleton yemukati" inopa ultra-high mechanical properties.Nekudaro, yakashata yekuumba maitiro inogona kushandura-refu-fiber zvigadzirwa kuita zvipfupi-fiber zvinhu.Kana kureba kwefiber kuchikanganiswa panguva yekugadzira, hazvibviri kuwana chiyero chinodiwa chekushanda.
Kuti uchengetedze hurefu hwefiber panguva yekuumbwa kweLFRT, zvinhu zvitatu zvakakosha zvinofanirwa kutariswa: jekiseni rekugadzira muchina, chikamu uye mold dhizaini, uye kugadzirisa mamiriro.
1. Equipment precautions
Mubvunzo mumwe unowanzo bvunzwa nezve LFRT kugadzirisa ndewekuti: Zvinoita here kuti isu tishandise iripo jekiseni rekugadzira michina kuumba zvinhu izvi.Muzviitiko zvakawanda, michina inoshandiswa kugadzira mapfupi fiber kompositi inogonawo kushandiswa kugadzira LFRT.Kunyangwe yakajairwa mapfupi fiber ekuumba michina inogutsa kune akawanda maLFRT zvikamu uye zvigadzirwa, kumwe kugadziridzwa kumidziyo kunogona kubatsira zvirinani kuchengetedza hurefu hwefiber.
A general-purpose screw ine yakajairwa "feed-compression-metering" chikamu chakanyatsokodzera kuita uku, uye inoparadza shear yefiber inogona kuderedzwa nekudzikisa chiyero chekumanikidza chechikamu chemita.Iyo yekumanikidza reshiyo yechikamu chemita ingangoita 2: 1 ndiyo yakanyanya kunaka kune zvigadzirwa zveLFRT.Izvo hazvifanirwe kushandisa yakakosha simbi alloys kugadzira screws, mbiya uye zvimwe zvikamu, nekuti kupfeka kweLFRT hakuna kufanana neiyo yechinyakare yakachekwa girazi fiber yakasimbiswa thermoplastics.
Chimwe chidimbu chemidziyo chinogona kubatsirikana kubva pakuongororwa kwedhizaini ndeye nozzle tip.Zvimwe zvinhu zve thermoplastic zviri nyore kugadzirisa nereverse tapered nozzle tip, iyo inogona kugadzira yakakwira dhigirii yekugera kana chinhu chacho chaiswa jekiseni mugomba rekuumbwa.Nekudaro, iyi nozzle tipi inogona kuderedza zvakanyanya kureba kwefiber yehurefu-fiber composite zvinhu.Naizvozvo, zvinokurudzirwa kushandisa grooved nozzle tip/valve assembly ine 100% "yemahara kuyerera" dhizaini, iyo inoita kuti zvive nyore kune refu fiber kupfuura nemumuromo uye muchikamu.
Mukuwedzera, iyo dhayamita yemhino negomba regedhi rinofanira kuva nehukuru hwakasununguka hwe5.5m
m (0.250in) kana kupfuura, uye hapafanirwe kuve nemakona akapinza.Izvo zvakakosha kuti unzwisise kuti zvinhu zvinoyerera sei kuburikidza nejekiseni rekuumba midziyo uye kuona kuti ndekupi kuchapwanya fiber.
Hebei Yuniu Fiberglass Manufacturing Company Limitedndizvomugadziri wefiberglass zvinhu ane anopfuura 10-gore ruzivo, 7- makore ekutumira kunze ruzivo.
Isu tiri vagadziri ve fiberglass raw materials, Zvakadai se fiberglass roving, fiberglass warn, fiberglass yakachekwa tambo mat, fiberglass yakachekwa tambo, fiberglass dema mat, fiberglass yakarukwa roving, fiberglass jira, fiberglass jira..Uye zvichingodaro.
Kana pane zvaunoda, tapota taura nesu zvakasununguka.
Tichaita zvatinogona kukubatsira uye kukutsigira.
Nguva yekutumira: Oct-09-2021