Opanga mphamvu zapamwamba kwambiri za modulus polyethylene fiber adayambitsa ntchito yake
(1) Kukana kwamphamvu kwambiri
UHMWPE CHIKWANGWANI ndi thermoplastic CHIKWANGWANI chokhala ndi kutentha kwa galasi lotsika.Imakhala ndi kulimba bwino komanso imatenga mphamvu pakuwonongeka kwa pulasitiki.Choncho, zinthu zake gulu akadali zabwino makina katundu pa mkulu mavuto mlingo ndi otsika kutentha.Kukana kwamphamvu ndikwambiri kuposa komwe kumapangidwa ndi kaboni fiber, arylon fiber ndi glass fiber composites.Mphamvu yeniyeni yoyamwa mphamvu Et/P ya UHMWPE fiber composite ndi 1.8, 2.6 ndi 3 nthawi ya carbon fiber, aramide fiber ndi E glass fiber, motero.Kuthekera kwa zipolopolo za UHMWPE fiber composite ndi nthawi 2.5 kuposa ya aramide fiber.Mphamvu yamphamvu ya CHIKWANGWANI cha UHMWPE imakhala yofanana ndi ya nayiloni, ndipo kuyamwa kwamphamvu kwa UHMWPE fiber pansi pa liwiro lalikulu ndi kuwirikiza kawiri kwa PPTA fiber ndi nayiloni.Kuchita uku ndikoyenera kwambiri popanga zida zoteteza zipolopolo.
(2) Kuchita bwino kopinda
Ulusi wolemera kwambiri wa molekyulu wa polyethylene uli ndi zinthu zabwino zopindika ndipo zimatha kupanga zoluka zoluka ndi mitu yoluka popanda kuthyoka.Kupindika kwa galasi fiber, carbon fiber ndi arylon fiber ndizosauka.Kuyerekeza kwa processing katundu wa ulusi zosiyanasiyana zimasonyeza kuti mkulu maselo kulemera polyethylene ali mkulu chomangira mphamvu ndi mphete kupanga mphamvu, ndi UHMWPE CHIKWANGWANI ali bwino mphete kupanga ntchito kuposa aramid CHIKWANGWANI.
(3) Kukana kwa fiber
Kuyenda kwa HSHMPE fiber kumadalira kutentha ndi katundu wa malo ogwira ntchito.Kuthamanga kwa HSHMPE fiber pa 35 ℃ ndi 1g / d katundu akusonyezedwa mu Table 3. Poyerekeza ndi ulusi wamba, kukwapula kukana kwa HSHMPE fiber ndikwabwino kwambiri.
(4) kukana bwino kwa chinyezi komanso kukana kwa dzimbiri kwamankhwala
Chifukwa cha mawonekedwe osavuta a polyethylene, imakhala ndi kukana kwa dzimbiri.Zamgulu zopangidwa ndi CHIKWANGWANI sangataye mphamvu zawo ndi kukhudzana ndi zidulo, alkali, madzi akuda nyanja, etc. UHMWPE CHIKWANGWANI ali mkulu maselo lathu ndi crystallization, mtanda gawo la macromolecules ndi yaing'ono, kotero unyolo makonzedwe ali pafupi, kuti bwino kupewa kukokoloka kwa mamolekyu madzi ndi reagents mankhwala, kotero kuti ali ndi kukana zabwino zosungunulira solubility.Ma Spectra fibers amakhalabe ndi mphamvu kwathunthu akamizidwa kwa theka la chaka muzinthu zosiyanasiyana, monga madzi, mafuta, asidi, ndi njira zoyambira.Ulusi wa Spectra umakhalabe ndi mphamvu ukamizidwa m'madzi kwa zaka ziwiri ndipo umalimbananso ndi dzimbiri.Gulu 1 - 8 limatchula kusungidwa kwamphamvu kwa Spectra fiber ndi Kevlar fiber mumitundu yosiyanasiyana yamankhwala.UHMWPE CHIKWANGWANI macromolecular unyolo mulibe mphete iliyonse onunkhira, gulu amino, hydroxyl gulu kapena magulu mankhwala pachiopsezo yogwira reagent kuukira, ndi crystallinity ndi mkulu, kotero mphamvu zosiyanasiyana caustic chilengedwe anakhalabe kuposa 90%, pamene aramid CHIKWANGWANI mu asidi wamphamvu, maziko amphamvu amachepetsa kwambiri.
(5) Kuvala kukana
Kukaniza kwa zinthuzo kumachepa ndi modulus yayikulu, koma kwa fiber ya UHMWPE, zomwe zimachitika ndizosiyana, izi ndichifukwa chakuchepa kwake kwa mikangano, chifukwa chake imakhala yolimba kwambiri.Chingwe cha fiber cha Spectra900PE chili ndi nambala 8 yoduka kwambiri yodulira nambala ya N kuposa ulusi wa aramid, ndipo imakhala ndi mphamvu yakutopa kwambiri kuposa ma aramid fiber.Chifukwa chosavuta kukonza, ili ndi chiyembekezo chogwiritsa ntchito bwino m'makampani.Valani kukana kwa UHMWPE mu korona wa pulasitiki, kangapo kuposa chitsulo cha kaboni, Huang Gang kuvala kukana, kukana kwake kuvala kumapitilira kangapo kuposa polyethylene wamba, ndipo ndi kuchuluka kwa ma molekyulu apamwamba, magwiridwe antchito okana amapitilira bwino, koma pambuyo pamene wachibale maselo misa kufika mtengo, ake kuvala kukana sikulinso kusintha ndi mkulu wachibale maselo misa.
(6) Kutchinjiriza magetsi ndi kukana kuwala
Mayendedwe a UHMWPE fiber reinforced composites kupita ku mafunde a radar ndi apamwamba kuposa a magalasi opangidwa ndi magalasi owonjezera chifukwa cha kuchepa kwa dielectric kosasintha komanso kutayika kwa dielectric komanso mafunde ochepa a radar.Kukhazikika kwa dielectric kwa zinthu za polyethylene ndi mtengo wopulumutsa mphamvu ndizochepa, zomwe ndizoyenera kupanga ma radomes osiyanasiyana.Kuphatikiza apo, mphamvu ya dielectric ya UHMWPE ndi pafupifupi 700kV/mm, yomwe imatha kuwongolera kusamutsa kwa arc ndi spark yamagetsi.
Ngakhale pambuyo pa kuunika kwa 1500h, mphamvu yosungira mphamvu ya UHMWPE fiber ndi pafupifupi 68 peresenti, pamene ulusi wina uli pansi pa 50 peresenti.
Nthawi yotumiza: Aug-15-2022
