Opanga matumba a simenti amawunika momwe matumba apulasitiki amagwirira ntchito
1, kulemera
Pulasitiki nthawi zambiri imakhala yopepuka, ndipo kachulukidwe ka pulasitiki ndi pafupifupi 0, 9-0, 98 g/cm3. Nthawi zambiri ntchito polypropylene kuluka. Ngati palibe chowonjezera chowonjezeredwa, ndichofanana ndi kachulukidwe ka polypropylene. Kachulukidwe ka polypropylene pakuwomba pulasitiki ndi 0, 9-0, 91 magalamu pa kiyubiki centimita. Maluko nthawi zambiri amakhala opepuka kuposa madzi. Kuphulika kwamphamvu kwa pulasitiki ndi mtundu wa zinthu zosinthika komanso zotsika kwambiri zamapulasitiki, zomwe zimagwirizana ndi kapangidwe kake ka maselo, crystallinity, ndi mawonekedwe ake. Zimagwirizananso ndi mtundu wa zowonjezera. Ngati mphamvu yeniyeni (mphamvu / mphamvu yokoka) imagwiritsidwa ntchito kuyeza pulasitiki ya pulasitiki, ndi yapamwamba kuposa kapena pafupi ndi zitsulo zachitsulo ndipo imakhala ndi mankhwala abwino.
2, pulasitiki yoluka motsutsana ndi inorganic
Organic zinthu zili bwino dzimbiri kukana pansi pa 110 digiri Celsius ndipo alibe mphamvu pa izo kwa nthawi yaitali. Iwo ali amphamvu mankhwala bata zosungunulira, mafuta, etc. Pamene kutentha kukwera, mpweya tetrachloride, xylene, turpentine, etc. akhoza kutupa. Kutentha kwa nitric acid, fuming sulfuric acid, halogen element ndi ma oxides ena amphamvu kumayipitsa, ndipo imakhala ndi kukana kwa dzimbiri ku ma alkali amphamvu ndi ma acid ambiri.
3, kukana kwabwino kwa abrasion
Coefficient of friction pakati pa polypropylene pulasitiki yoluka ndi yaying'ono, pafupifupi 0 kapena 12, yomwe ili yofanana ndi nayiloni. Pamlingo wina, kukangana pakati pa pulasitiki ndi zinthu zina kumakhala ndi mafuta.
4, kutchinjiriza kwamagetsi kwabwino
Pure polypropylene braid ndi insulator yabwino kwambiri yamagetsi. Chifukwa sichimamwa chinyezi ndipo sichimakhudzidwa ndi chinyezi chamlengalenga, mphamvu yowonongeka imakhalanso yokwera. Kukhazikika kwake kwa dielectric ndi 2, 2-2, ndipo kukana kwake kwakukulu ndikokwera kwambiri. Kusungunula kwabwino kwa kuluka kwa pulasitiki sikukutanthauza kuzigwiritsa ntchito popanga. Kugwiritsa ntchito zipangizo zotetezera.
5. Kukana kwa chilengedwe
Pa kutentha kwa chipinda, nsalu yolukidwa ya pulasitiki imakhala yopanda kukokoloka kwa chinyezi, mayamwidwe amadzi mkati mwa maola 24 ndi ochepera 0, 01%, komanso kulowa kwa nthunzi wamadzi ndikotsika kwambiri. Pa kutentha kochepa, imakhala yonyezimira komanso yowonongeka. Kuluka kwa pulasitiki sikudzakhala mildewed.
6. Kukana kukalamba kosakwanira
Kukana kukalamba kwa kuluka kwa pulasitiki ndikotsika, makamaka kuluka kwa polypropylene ndikotsika kuposa kuluka kwa polyethylene. Zifukwa zazikulu za ukalamba wake ndi kutentha kuyabwa kukalamba ndi photodegradation. Kulephera koletsa kukalamba kwa pulasitiki ndi chimodzi mwa zolakwika zake zazikulu, zomwe zimakhudza moyo wake wautumiki ndi malo ogwiritsira ntchito.