Opanga matumba a simenti amasanthula magwiridwe antchito azikhalidwe zodziwika bwino za matumba apulasitiki

Opanga matumba a simenti amasanthula magwiridwe antchito azikhalidwe zodziwika bwino za matumba apulasitiki
1, kulemera kopepuka
Mapulasitiki nthawi zambiri amakhala opepuka, ndipo kachulukidwe ka kuluka pulasitiki kumakhala pafupifupi 0, 9-0, 98 g / cm3. Kawirikawiri amagwiritsidwa ntchito polypropylene kuluka. Ngati palibe chodzaza chowonjezeredwa, chimakhala chofanana ndi kachulukidwe ka polypropylene. Kuchuluka kwake kwa polypropylene yopangira pulasitiki ndi 0, 9-0, 91 magalamu pa sentimita imodzi. Ma Braids nthawi zambiri amakhala opepuka kuposa madzi. Kuluka kwamphamvu kwamapulasitiki kulimba ndi mtundu wa mphamvu zosinthasintha komanso zowononga kwambiri zopangidwa ndi pulasitiki, zomwe zimakhudzana ndi mamolekyulu ake, crystallinity, ndi mawonekedwe ake. Imakhudzanso mtundu wa zowonjezera. Ngati mphamvu yeniyeni (mphamvu / mphamvu yokoka) imagwiritsidwa ntchito kuyeza ulusi wapulasitiki, ndiyokwera kuposa kapena pafupi ndi zinthu zachitsulo ndipo imakhala ndi mankhwala osokoneza bongo.
2, kuluka pulasitiki motsutsana ndi zochita kupanga
Zinthu zakuthupi zimatha kukana dzimbiri pansi pa 110 digiri Celsius ndipo sizikhala ndi zotsatirapo kwa nthawi yayitali. Ili ndi bata lamphamvu lamankhwala osungunulira, mafuta, ndi zina zambiri kutentha kukakwera, tetrachloride ya kaboni, xylene, turpentine, ndi zina zambiri imatha kufufuma. Kutentha kwa nitric acid, fuming acid ya sulfuric, zinthu za halogen ndi ma oxide ena amphamvu azisokoneza, ndipo zimakhala ndi dzimbiri kukana kwa alkalis wamphamvu ndi zidulo zonse.
3, kukana kwabwino
Coefficient ya mikangano pakati pa polypropylene yoyera yoluka ndi yaying'ono, pafupifupi 0 kapena 12, yofanana ndi nayiloni. Kumlingo wina, mkangano pakati pa ulusi wapulasitiki ndi zinthu zina umakhala ndi mafuta.
4, kutchinjiriza kwamagetsi kwabwino
Kuluka kwa polypropylene koyenera ndi njira yabwino kwambiri yopangira magetsi. Chifukwa sichitenga chinyezi ndipo sichimakhudzidwa ndi chinyezi mlengalenga, magetsi owonongeka nawonso amakhala okwera. Kusinthasintha kwake kwa ma dielectric ndi 2, 2-2, ndipo mphamvu yake yotsutsana ndiyokwera kwambiri. Kutchinjiriza kwabwino kwa pulasitiki sikukutanthauza kuigwiritsa ntchito popanga. Kugwiritsa ntchito zida zotetezera.
5. Kukaniza zachilengedwe
Kutentha, nsalu yokhotakhota ya pulasitiki imakhaladi yopanda chinyezi, kutentha kwa madzi mkati mwa maola 24 ndi ochepera 0, 01%, ndipo kulowa kwa nthunzi yamadzi ndikotsika kwambiri. Kutentha kochepa, kumakhala kosavuta komanso kosalala. Kuluka pulasitiki sikudzasungunuka.
6. Kukanika kukalamba
Kukana kwaukalamba kwa pulasitiki kuluka ndikosauka, makamaka polypropylene kuluka ndikotsika kuposa kuluka kwa polyethylene. Zifukwa zazikulu zakukalamba kwake ndikutentha kwakukalamba komanso photodegradation. Mphamvu yoletsa kukalamba ya ulusi wapulasitiki ndi imodzi mwazolephera zake zazikulu, zomwe zimakhudza moyo wake wothandiza ndi malo ogwiritsira ntchito.

F147134B9ABA56E49CCAF95E14E9CD31


Post nthawi: Jan-29-2021