Menene yankakken carbon fiber?

Chopped carbon fiber shine carbon fiber wanda aka yanke gajere. Anan fiber ɗin carbon ɗin shine kawai canjin yanayin halitta, daga filament na carbon fiber zuwa ɗan gajeren filament, amma aikin fiber ɗin carbon ɗin da aka yanke kansa bai canza ba. Don haka me yasa kuke son yanke gajeriyar filament mai kyau?
Da farko, dole ne mu fara daga tsarin gyare-gyaren kayan haɗin gwiwar. Yawanci carbon fiber filament da za a saka a cikin carbon fiber zane ko sanya a cikin carbon fiber prepreg, sa'an nan ta hanyargyare-gyaren tsari, RTM, jakar jaka, gwangwani masu zafi da sauran matakaia cikin nau'o'in nau'in nau'in carbon fiber composite samfurori. Tabbas, akwai kuma wasu hanyoyin yin gyare-gyare waɗanda ba sa buƙatar kayan tsaka-tsaki, kai tsaye ta hanyar filament ɗin carbon fiber don yin gyare-gyare, kamar gyare-gyaren gyare-gyare, gyare-gyaren iska da sauransu.
Carbon fiber saka a cikin carbon fiber zane ko sanya a cikin prepreg, je yin kayayyakin, akwai na halitta hasara, ba shi da kyau a tsaya da mold. Kasancewar ƙirar shine don ba da siffar kwatanci, mold ɗin yana da irin nau'in siffar, kayan aikin ƙarshe na ƙarshe kuma yana da irin sifa. Duk da haka, idan zanen fiber carbon ko prepreg bai dace da ƙirar da kyau ba, siffar kayan haɗin gwiwar ba ta dace da siffar ƙirar ba. Bugu da kari, a wasu sasanninta, zanen fiber carbon yana da sauƙin gada, yana samar da rami na gida, wanda a ƙarshe yana haifar da raguwar ayyukan samfuran fiber carbon fiber.
Filament na fiber carbon da ke cikin zanen fiber carbon ko prepreg yana daure kuma ba shi da sauƙin motsawa. Musamman a yanayin matsin lamba, motsin guduro da filament filament na carbon fiber ba shi da kyau sosai, wanda a ƙarshe zai haifar da matsalolin gyare-gyare ko lalata aikin.
Ya fi guntu tsawon, mafi kyawun ruwa nayankakken carbon fiber. Ya kamata a san cewa yin gyare-gyaren allura shine fasahar da aka fi amfani da ita kuma balagagge a cikin tsarin gyaran filastik. Idan aka yi amfani da shi don samar da kayan haɗin gwiwar, zai zama canji mai mahimmanci.
Duk da haka, ba za a iya rage tsawon gajeren gajeren fiber na carbon fiber ba, saboda mafi guntu tsawon gajeren lokaci na fiber carbon fiber, resin da carbon fiber bonding zai zama mai rauni. Domin alakar da ke tsakanin resin da carbon fiber yana daidai da wurin tuntuɓar da ke tsakanin su, idan aka gajarta tsayin, to babu shakka an rage wurin tuntuɓar.
Sa'an nan kuma akwai sabani a nan, wato, sabani tsakanin aikin firam ɗin da aka yanke da kuma motsi. Tsawon tsayin fiber ɗin, ƙarancin yuwuwar tarwatsewa, fiber da fiber suna da sauƙin ƙulli, amma mafi ƙarfi da haɗin fiber da resin, daga cikin abubuwan da aka haɗa zasu zama mafi girma. Matsakaicin tsayin fiber ɗin, mafi sauƙi shine tarwatsawa, tare da ingantaccen kwarara, amma fiber da resin bond yana da rauni kaɗan. Yadda za a daidaita wannan sabani, ana buƙatar yin nazari, yawanci, don yin gajeriyar ƙwayar carbon fiber ƙarfafa pellets filastik, tsayin kewayon 1-9mm.
Hakanan akwai wata hanya don haɓaka ƙarfin haɗin gwiwa tsakanin fiber carbon da resin, wanda shine ma'aunin ƙima. Yawancin lokaci, akwai ma'auni mai ƙima akan farfajiyarcarbon fibermasana'anta, wanda ake amfani da shi don kare fiber carbon daga rufi a cikin tsarin tattarawa, canja wuri da aiki, sannan a daya bangaren, ana amfani da shi don hada fiber carbon da resin, da kuma taka rawar inganta karfin haɗin gwiwa.
Duk da haka, wannan ma'aunin ma'aunin ma'aunin shine ainihin don resin thermosetting. Yawancin resin da ake amfani da su don yin pellets resins ne na thermoplastic, don haka dole ne a gyara ma'aunin girman. Ɗaya shine a ƙone ainihin ma'aunin girman da kuma yin sabon Layer na ma'auni. Ɗayan shine a ƙone ainihin ma'aunin girman da kuma yin sabon Layer na ma'auni; ɗayan kuma shine sake sake yin siginar ƙima akan asalin ma'aunin sikelin, wanda ake kira secondary sizing.
Baya ga yin granules don gyaran allura,yankakken carbon fiberyana da sauran amfani, kamar su abin da aka yi da tabarmar fiber carbon, ko da aka yi da takarda fiber fiber. Tsawon da ake buƙata na yankakken fiber carbon zai zama tsayi fiye da tsawon yankakken fiber don granules.
Bugu da kari, baya ga yankakken filayen carbon da aka yi cikin hatsaniya, akwai kuma yankakken zabar carbon da aka dunkule. Wannan fitaccen fiber ɗin da aka yanke yana cikin ɗan gajeren yanke kafin ƙwanƙarar carbon fiber don wani takamaiman nau'in da aka ƙaddara, sannan a yanke daga cikin gajeriyar fiber ɗin yana da sifofin gungu, wanda ke ɗauke da adadin resin zai fi sauran fiber yanke.