Iyini isikhunta se-LFT futhi uyini umehluko ngesikhunta se-SMC

1. Isingeniso seLFT
I-LFT, i-fiber ende eqiniswe ngezinto ezishisayo ze-thermoplastic, isiNgisi yi-Long Fiber eqinisiwe i-Thermoplastics, iqhathaniswa ne-fiber evamile eqiniswe impahla ye-thermoplastic, ngokuvamile, ubude be-fiber ye-fiber reinforced thermoplastic material ingaphansi kwe-1 mm, kanti i-LFT, Ubude be-fiber ngokuvamile ngaphezu kuka-2 mm. Ubuchwepheshe bamanje bokucubungula bukwazile ukugcina ubude befiber ku-LFT ngaphezu kuka-5 mm.
2. Ukwakheka kwe-LFT
Ukuhlaziywa kwe-LFT (Long Glass Fiber Reinforced Plastic) kusekelwe kubuchwepheshe bokuhlaziya i-micro-spectrum, obuhlaziya okuqukethwe kwengxenye ngayinye yezinto eziphrofayili nge-micro-spectrum bese ibuyisela ifomula eyisisekelo. Izinto ezinde ze-fiber-reinforced thermoplastic ziqhathaniswa nezinto ezijwayelekile ze-fiber-reinforced thermoplastic. I-matrix resin esetshenziswa kakhulu yi-PP, ilandelwa yi-PA, kanti amanye ama-resin afana ne-PBT, i-PPS, ne-SAN nawo ayasetshenziswa. I-LFT inezinhlelo zokusebenza eziningi ezimotweni, futhi inzuzo enkulu ukuguquguquka lapho izinto zingahlanganiswa khona.
Okwesithathu, umehluko phakathi kwe-LFT ne-SMC
Inqubo yokukhiqiza umkhiqizo weshidi le-LFT ifana kakhulu ne-SMC (Sheet Molding) kumapulasitiki aqiniswe ngengilazi ehlanganisiwe ye-thermosetting. Ibuye yenziwe ngokucindezela amashidi esikhunjini. I-LFT iyishidi eliqinile elishisiswe futhi lithambe bese licindezelwa ngokubanda esikhunjeni, kuyilapho i-SMC icindezelwa ngokushisa ngemva kokuba ishidi elithambile elibandayo lifakwe esikhunjeni.
Uma kuqhathaniswa neshidi le-SMC, ukusebenza kobuchwepheshe kweshidi le-LFT kunezinzuzo ezilandelayo:
1. Ayinangozi futhi ayinambitheki, ingathuthukisa indawo yokusebenza.
2. Isisindo esilula, ukuminyana kungu-1~1.2g/cm3 kuphela.
3. Izinsalela kanye nemikhiqizo engcolile ingagaywa kabusha ukuze kuncishiswe imfucuza.
4. Amandla angaphezulu kune-SMC, futhi ukuqina komthelela kuvelele kakhulu.
5. Ukumelana nokugqwala nokusebenza okungcono kagesi.
6. Isivinini sokucindezela umkhiqizo sishesha izikhathi eziningana kune-SMC, futhi ukusebenza kahle kokukhiqiza kuthuthukiswa kakhulu.