A cikin aiwatar da filastik filastik albarkatun albarkatun ƙasa, ɗaya ko fiye daga cikin waɗannan yanayi sau da yawa suna faruwa, irin su rheology na polymers da canje-canje a cikin kaddarorin jiki da sinadarai, waɗanda galibi suna da halaye masu zuwa:
1. Fluidity: The fluidity na thermoplastics iya kullum za a iya ƙaddara daga jerin fihirisa kamar kwayoyin nauyi, narke index, Archimedes karkace kwarara kwarara, fili danko da kwarara rabo (tsari tsawon / filastik bango kauri).nazari.
2. Crystallinity: Abin da ake kira crystallization sabon abu yana nufin abin da ya faru cewa kwayoyin halitta na filastik suna canzawa daga motsi na kyauta kuma gaba daya sun lalace zuwa kwayoyin suna dakatar da motsi na kyauta kuma an shirya su a wani wuri mai mahimmanci don samar da samfurin nunin kwayoyin halitta daga narkakkar. state ga condensation.
3. Heat Sensitivity: Yanayin zafi yana nufin cewa wasu robobi sun fi kula da zafi.Lokacin da lokacin dumama ya daɗe a babban zafin jiki ko tasirin raguwa yana da girma, yawan zafin jiki na kayan yana ƙaruwa kuma yana da wuyar canzawa da lalata.Lokacin da robobi masu zafin zafi suka lalace, ana samar da kayayyaki irin su monomers, gas, da daskararru.Musamman, wasu iskar gas da suka lalace suna da ban haushi, masu lalata ko masu guba ga jikin ɗan adam, kayan aiki, da gyare-gyare.
.Wadannan robobi (kamar polycarbonate) dole ne a rigaya su bushe da bushewa
5. Tsagewar damuwa: Wasu robobi suna da damuwa da damuwa, kuma suna iya fuskantar damuwa na ciki yayin gyare-gyaren, wanda ba shi da ƙarfi da sauƙi don tsagewa, ko sassan filastik suna fashe a ƙarƙashin aikin ƙarfin waje ko sauran ƙarfi.Ana kiran wannan al'amari na damuwa.
6. Narke karaya: A polymer narke tare da wani adadin kwarara kudi wuce ta cikin bututun ƙarfe rami a akai zazzabi.Lokacin da adadin kwararar ya wuce wani ƙima, bayyanannen tsage-tsage na ɓarna yana faruwa a saman narke, wanda ake kira fashewar narkewa.Lokacin da aka zaɓi adadin narkewar ruwa Lokacin samar da kayan albarkatun filastik masu inganci, ya kamata a haɓaka nozzles, masu gudu, da tashoshin ciyarwa don rage saurin allura da matsa lamba, da ƙara zafin kayan.
Magana
[1] Zhong Shuheng.Haɗin Launi.Beijing: Gidan Buga Fasaha na Sin, 1994.
[2] Song Zhuoyi et al.Filastik albarkatun kasa da ƙari.Beijing: Gidan Buga Adabin Kimiyya da Fasaha, 2006.
[3] Wu Lifeng et al.Jagoran Mai Amfani Masterbatch.Beijing: Masana'antun Masana'antu, 2011.
[4] Yu Wenjie et al.Abubuwan Ƙarfafa Filastik da Fasahar Ƙira.Bugu na 3.Beijing: Masana'antun Masana'antu, 2010.
[5] Wu Lifeng.Zane-zanen Launi na Filastik.Bugu na 2.Beijing: Masana'antun Masana'antu, 2009
Lokacin aikawa: Juni-18-2022