Kunyumba> Nkhani> Ultra-Yault Dzazani Phukusi la Pulati ya Pulani

Ultra-Yault Dzazani Phukusi la Pulati ya Pulani

February 29, 2024

Pofuna kugwiritsa ntchito mokwanira maubwino osinthika, osalowerera-osalowerera, ndi mitengo yambiri yotsika mtengo, mtengo wa mitengo ya pulasitiki amatha kuchepetsedwa ndikuwonjezera mpikisano wamtchire, motero amawongolera mpikisano wake pamsika ndipo ubwenzi wachilengedwe. Zolemba zamapulasitiki zopezeka papulasitiki zopezeka zitha kukhala zokwera kwambiri monga 70wt.%. Komabe, mtundu wamtundu wapulasitiki uwu ulipo mpaka 30wt.% Ya ma polity a thermoplastic ma polima, omwe mosavuta amatsogolera ku chiwongola dzanja chofooka, komanso kuchuluka kwa mafuta okwanira. Mavuto monga awa amaletsa kugwiritsa ntchito nkhuni za pulasitiki m'minda yokhala ndi zolimbitsa thupi. Makamaka pamene mtengo wa pulasitiki umagwiritsidwa ntchito ngati zida zomangira monga zakumanzere ndi makoma a khoma, idzayamba pansi pa katundu wautali ndikuwonjezera matenthedwe ochulukirapo komanso kuzizira chifukwa cha kusintha kwa kutentha. Phrinomenon Phenomenon, omwe amakhudza kwambiri kulimba kwa mitengo yapulasiki nthawi yayitali. Pa maziko omwe alipo, akupitiliza kuwonjezera mitengo yamoto ndi njira yothandiza yankho. Fiber yotalika yamatabwa siyingowonjezera chidwi cha ogwiritsa ntchito komanso chidwi, komanso zimabweretsa mawonekedwe a hygroscopic ndi zinthu zina, zomwe zimathandizanso kukulitsa kukula kwa nkhuni. Kugwiritsa ntchito zida zophatikizira za pulasitiki ndizofunikira kwambiri.


Ufa wovuta wa nkhupu pulasitiki umatengera njira yokonza. Kuumba jakisoni kumafuna nkhuni za pulasitiki kusungunuka kuti mukhale ndi madzi ambiri, ndipo kumafunikira kutentha kwambiri komanso kukakamizidwa kwambiri kuposa kuwumbidwa, kotero mawonekedwe ake otchinga nthawi zambiri samapitilira 60wt.%. Madzimadzi ambiri safunikira nthawi yokhazikika. Malipoti a mabuku amatha kukwaniritsa mtengo wa pulasitiki wokhala ndi zochulukirapo 84wt.% (Mabuludi ovala omwe amakonzedwa pogwiritsa ntchito zomatira zosiyanasiyana thermanoseting sizikukambidwa). Komabe, popindika kotentha palibe chodumphadumpha panthawi yotsatsira, ulusi wa nkhuni ndi ma polymer matrix akuwonetsa mosavuta, ndipo zofooka zina komanso zofooka zina, zomwe nthawi zambiri zimakhala zofooka katundu. ndi kukhazikika kwa nthawi yayitali, ndipo kupangidwa kwake ndikovuta kwambiri kukwaniritsa kupitilirabe. Kuumba ma extring pakadali pano njira yogwiritsidwa ntchito kwambiri yogwiritsidwa ntchito popanga nkhuni zamapulasitiki. Poyerekeza ndi njira zina, kumata zochulukitsa kumathandiza kwambiri, mosalekeza kuphatikiza, komanso mawindo abwino. Kuphatikiza apo, ulusi wa nkhuni uli ndi katundu wabwino pakuwongolera. Ndi mawonekedwe ena, zotsatira zabwino zomwe zingachitike pakuwongolera. Komabe, ndizovuta kwambiri kuwonjezera mitengo ya pulasitiki ya mtengo wapulasitiki. Izi ndizochepa kwambiri chifukwa cha mafayilo amtundu wapulasitiki osungunuka mumtengo wodzaza ndi nkhuni, zomwe zimayambitsa mtengo wa pulasitiki kusungunuka kuti usayendetsedwe. Ngakhale kusungunuka kumachitika, ndipo matrix ochepa polymer ndi ovuta kubisanso nkhuni. Zimakhala zovuta kuti magawo omwe alipo wamba ndi zida kupititsa patsogolo zotentha ndi mitengo yodzaza kwambiri ndi pulasitiki. Kuphatikiza apo, kumvetsetsa kwa chikhalidwe cholimba cha zikhulupiriro zodzaza pulasitiki kwambiri kumasungunuka ndizochepa, ndipo pamakhala kusowa kwa malingaliro achangu a hhehelogical. Ichi ndi chimodzi mwazinthu zofunika zomwe zingalepheretse kupanga mtengo wodzaza pulasitiki kwambiri. Komabe, ulusi wamatabwa umatha kulumikizana kuti ukhale wokhazikika popanga zingwe zomangira monga ionic zomangira, zomangira za hydrogen, a van der Waals, komanso kukopeka mwa thupi. Chifukwa chake, kusankha kovomerezeka kwa matrix ndi zowonjezera komanso kuwongolera ukadaulo wa ukadaulo kungakulitsenso nkhuni za pulasitiki.


Pofuna kuchepetsa ndalama zonse, onjezerani mwayi wokhala nditambayo, ndipo pezani nkhuni zabwino, pali zojambula zopangidwa ndi mapulogalamu opangira matayi ) Kutakula. Kutengera kutsika kwakukulu mu polyprophentylene matrix, nkhaniyi imasanthula kwambiri zoseweretsa zosefera ndi mitundu yotsika mtengo, kutentha kwa mafuta, mawonekedwe a mayamwidwe ndi mayamwidwe amadzi Matanda a pulasitiki. Zotsatira zikuwonetsa kuti monga kuchuluka kwa kuchuluka kwa 75% mpaka 90%, mzere wofuula umatsika kwambiri umatsika kwambiri, ndipo kupsinjika kumatsika pang'onopang'ono, pang'onopang'ono kumachepa pang'onopang'ono, ndipo kumawonjezeka pa 90%; Kusasinthika modulus ndi kusinthika modulus koyamba kumawonjezereka ndi kuchuluka kodzaza. Kuchuluka kenako kumachepetsa 90%; Mphamvu yakukhala, kubisala mphamvu ndi mphamvu za mphamvu pang'onopang'ono zimachepa pamene kuchuluka kwadzaza kumawonjezeka; Matabwa a pulasitiki ali ndi vuto lalikulu komanso kugwada malo otentha kwambiri - 30 ° C, ndi kutentha kwambiri pa 60 ° C Press HARD HETRARD HETRARD HECT UNITE HETOND UTHENGA WABWINO. Kusintha kwa kutentha, chinyezi ndi chinyezi chokhala ndi chinyezi chonse zimayambitsa kusintha kwa mtengo wa pulasitiki. Kuchuluka kwa kukula kwake ndikofunikira kwambiri pakuwongolera kwa makulidwe, kutsatiridwa ndi m'lifupi, ndipo njira yolimayo ndiyocheperako, yomwe ikuwonetsa anisotropy yodziwikiratu; Chinyezi chimakhala ndi mawonekedwe okhazikika a uh-pulasitiki. Mphamvu zogonana ndizokulirapo kuposa mphamvu ya kutentha. Kugwirira ntchito kwathunthu kwa opukutira ndikwabwino kuposa komwe kwa nkhuni za Mos Bamboo-poizoni, komwe kumagwirizana ndi gawo lalikulu la zojambulajambula ndi mawonekedwe abwino a fiber. Kafukufuku wokhudza nkhuni za UH, umapereka maziko ochepetsa mtengo wopangira pulasitiki ndikuwonjezera magawo ake ofunsira.


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