Ulusi Wosasinthika
Ulusi wotsutsana ndi zinthu zina ndi gulu la ulusi wa mankhwala womwe sungathe kusonkhanitsa mosavuta mphamvu zokhazikika. Pansi pa mikhalidwe yokhazikika, ulusi wotsutsana ndi zinthu zina umafunika kuti ukhale ndi mphamvu yolimbana ndi mphamvu zosakwana 10¹⁰Ω·cm kapena mphamvu yokhazikika yotaya mphamvu zosakwana masekondi 60.
1 Ntchito za Ulusi Wosasinthasintha…
Ulusi Wosasinthika
Ulusi wotsutsana ndi zinthu zina ndi mtundu wa ulusi wa mankhwala womwe sungathe kusonkhanitsa mosavuta mphamvu zosasunthika. Pansi pa mikhalidwe yokhazikika, ulusi wotsutsana ndi zinthu zina umafunika kuti ukhale ndi mphamvu yotsutsa mphamvu zosakwana 10¹⁰Ω·cm kapena mphamvu yotaya mphamvu yosasunthika ya theka la moyo wosakwana masekondi 60.
1 Ntchito za Ulusi Wosasinthasintha
1.1 Zoyambitsa ndi Zoopsa za Mavuto a Magetsi Osasinthasintha mu Zipangizo Zansalu
Zipangizo za nsalu nthawi zambiri zimakhala zotetezera magetsi zomwe zimakhala ndi mphamvu yolimba, makamaka ulusi wopangidwa womwe umayamwa chinyezi chochepa monga ulusi wa polyester, acrylic, ndi polyvinyl chloride. Pakukonza nsalu, kukhudzana kwambiri ndi kukangana pakati pa ulusi ndi ulusi kapena ulusi ndi zida zamakina kumayambitsa kusamutsa mphamvu pamwamba pa zinthu, motero kupanga magetsi osasinthasintha.
Magetsi osasunthika amatha kubweretsa mavuto ambiri. Mwachitsanzo, ulusi wokhala ndi mphamvu yofanana umatha kuthamangitsana, ndipo ulusi wokhala ndi mphamvu yosiyana umakopa ziwalo za makina, zomwe zimapangitsa kuti sliver igwedezeke, ubweya wa ulusi ukhale wochuluka, kupanga bwino phukusi, ulusi umamatira ku ziwalo za makina, kusweka kwa ulusi, ndi mizere yobalalika pamwamba pa nsalu. Zovala zikatha kutenthedwa, zimakhala zosavuta kuyamwa fumbi ndikuipitsidwa, ndipo kusakanikirana kungachitike pakati pa zovala ndi thupi la munthu, kapena pakati pa zovala ndi zovala, ndipo ngakhale magetsi amatha kupangidwa. Pazochitika zoopsa, mphamvu yosasunthika imatha kufika ma volts zikwi zingapo, ndipo magetsi opangidwa ndi kutulutsa madzi amatha kuyambitsa moto ndi zotsatirapo zoopsa.
1.2 Njira Zothetsera Kusokonezeka kwa Nsalu Zopangidwa ndi Ulusi
Pali njira zosiyanasiyana zopangira ulusi wopangidwa ndi nsalu zake kukhala ndi mphamvu zokhalitsa zotsutsana ndi static. Mwachitsanzo, ma polima okonda madzi kapena ma polima olemera pang'ono amatha kuwonjezeredwa panthawi ya polymerization kapena spinning ya ulusi wopangidwa; ukadaulo wopota wa composite ungagwiritsidwe ntchito popanga ulusi wophatikizana wokhala ndi hydrophilic external layer. Mu ndondomeko yopota, ulusi wopangidwa ukhoza kusakanizidwa ndi ulusi wokhala ndi hygroscopicity yamphamvu, kapena ulusi wokhala ndi positive charges ndi ulusi wokhala ndi negative charges ukhoza kusakanizidwa malinga ndi momwe zinthu zilili. Kumaliza kothandizira kwa hydrophilic kolimba kungagwiritsidwenso ntchito ku nsalu.
Mitundu iwiri ya Ulusi Wosasinthika
2.1 Ulusi Wowonjezeredwa ndi Surfactant
Kuti akonze ulusi wokhala ndi mphamvu zoteteza kutentha kwa mpweya, ma surfactants nthawi zambiri amawonjezeredwa ku dope yozungulira kuti azungulire. Pambuyo popanga ulusi, ma surfactants amasuntha mosalekeza ndikufalikira kuchokera mkati mwa ulusi kupita pamwamba chifukwa cha mawonekedwe awoawo, kuti akwaniritse mphamvu zoteteza kutentha kwa mpweya. Palinso njira monga kukonza ma surfactants pamwamba pa ulusi kudzera mu zomatira kapena kuzilumikiza mu mafilimu pamwamba pa ulusi, ndipo zotsatira zake zimakhala zofanana ndi kutsuka varnish yoteteza kutentha kwa mpweya pamwamba pa pulasitiki.
Mphamvu ya ulusi woterewu yotsutsana ndi kutentha imakhudzana kwambiri ndi chinyezi cha chilengedwe. Chinyezi chikakhala chokwera, chinyezi chimatha kuwonjezera mphamvu ya ionic ya surfactant, ndipo magwiridwe antchito a antistatic amawonjezeka kwambiri; m'malo ouma, mphamvuyo imachepa.
2.2 Kusakaniza, Kukonza ndi Kusintha kwa Graft Ulusi Wosasinthika
Cholinga chachikulu cha mtundu uwu wa ulusi wotsutsana ndi static ndikusintha polima yopanga ulusi, ndikuwonjezera hygroscopicity ya ulusiwo powonjezera ma monomers kapena ma polima okonda hydrophilic, motero kuwapatsa mphamvu zotsutsana ndi static. Kuphatikiza apo, copper sulfate ikhoza kusakanikirana mu acrylic spinning dope, ndipo pambuyo pozungulira ndi kuuma, imachiritsidwa ndi sulfure-containing reducing agent, yomwe ingathandize kukonza bwino kupanga ndi kulimba kwa conductivity ya ulusi woyendetsa. Kuphatikiza pa kupota wamba, njira yowonjezera ma polima okonda hydrophilic panthawi ya polymerization kuti apange micro-multiphase dispersion system yayamba pang'onopang'ono, monga kuwonjezera polyethylene glycol ku caprolactam reaction mix kuti iwonjezere kulimba kwa mphamvu zotsutsana ndi static.
2.3 Ulusi Woyendetsa Zitsulo
Ulusi woyendetsa zitsulo nthawi zambiri umapangidwa ndi zinthu zachitsulo kudzera munjira zinazake zopangira ulusi. Zitsulo zodziwika bwino zimaphatikizapo chitsulo chosapanga dzimbiri, mkuwa, aluminiyamu, nikeli, ndi zina zotero. Ulusi woterewu uli ndi mphamvu yabwino kwambiri yoyendetsera magetsi, umatha kuyendetsa mwachangu magetsi, komanso umachotsa bwino magetsi osasinthasintha. Nthawi yomweyo, umakhalanso ndi mphamvu yabwino yolimbana ndi kutentha komanso kukana dzimbiri kwa mankhwala. Komabe, zikagwiritsidwa ntchito pa nsalu, pali zoletsa zina. Mwachitsanzo, ulusi wachitsulo uli ndi mgwirizano wochepa, ndipo mphamvu yolumikizana pakati pa ulusi panthawi yopota sikokwanira, zomwe zingayambitse mavuto a ulusi; mtundu wa zinthu zomalizidwa umachepetsedwa ndi mtundu wa chitsulocho ndipo ndi umodzi. Mu ntchito zenizeni, nthawi zambiri zimasakanizidwa ndi ulusi wamba, pogwiritsa ntchito mphamvu yoyendetsa ya ulusi wachitsulo kuti zinthu zosakanikirana zikhale ndi mphamvu zotsutsana ndi static, ndikugwiritsa ntchito ulusi wamba kuti muwongolere magwiridwe antchito ozungulira ndikuchepetsa ndalama.
2.4 Ulusi Woyendetsa Mpweya
Njira zokonzekera ulusi woyendetsa mpweya makamaka zimaphatikizapo kugwiritsa ntchito mankhwala osokoneza bongo, kuphimba, kuyika mpweya m'thupi, ndi zina zotero. Kugwiritsa ntchito mankhwala osokoneza bongo ndiko kusakaniza zinthu zoyambitsa mpweya m'zinthu zopangira ulusi kuti zisinthe kapangidwe kake kamagetsi, motero kupatsa ulusi mphamvu yoyendetsa mpweya; kuyika mpweya m'thupi ndiko kupanga ulusi woyendetsa mpweya poika ulusi wa kaboni ndi mphamvu yabwino monga kaboni wakuda pamwamba pa ulusi; kuyika mpweya m'thupi nthawi zambiri kumagwiritsa ntchito viscose, acrylic, pitch, ndi zina zotero ngati ulusi woyambira, ndikuzisintha kukhala ulusi woyendetsa mpweya m'thupi kudzera mu carbonization yotentha kwambiri. Ulusi woyendetsa mpweya m'thupi wokonzedwa ndi njira izi umapeza mphamvu inayake pamene ukusunga gawo la mphamvu zoyambirira za ulusi. Ngakhale ulusi wa kaboni wothandizidwa ndi carbonization uli ndi mphamvu yabwino yoyendetsa mpweya, kukana kutentha komanso kukana mankhwala, uli ndi modulus yapamwamba, kapangidwe kolimba, kusowa kulimba, sulimbana ndi kupindika, ndipo sungathe kuchepetsedwa kutentha, kotero kugwiritsa ntchito kwawo kumakhala kofooka nthawi zina pamene ulusi umafunika kukhala ndi kusinthasintha kwabwino komanso kusokonekera.
2.5 Ulusi Woyendetsa Zinthu Zachilengedwe Wopangidwa ndi Ma Polima Oyendetsa Zinthu
Ulusi woyendetsa wachilengedwe wopangidwa ndi ma polima oyendetsera uli ndi kapangidwe kapadera kolumikizidwa, ndipo ma elekitironi amatha kuyenda momasuka pa unyolo wa mamolekyulu, motero amakhala ndi mphamvu yoyendetsa. Chifukwa cha mphamvu zawo zapadera zoyendetsera ndi mawonekedwe a zinthu zachilengedwe, ulusi woterewu ungagwiritsidwe ntchito m'magawo ena apamwamba okhala ndi zofunikira zapadera zogwirira ntchito komanso kusinthasintha kwa mtengo, monga zida zamagetsi ndi malo oyendera ndege.
2.6 Ulusi Woyendetsa Zinthu Zachilengedwe Wopangidwa ndi Zinthu Zoyendetsa Zinthu Pa Ulusi Wamba Wopanga
Mtundu uwu wa ulusi umagwira ntchito yoteteza kutentha kwa nthaka mwa kuphimba zinthu zoyendetsera mpweya monga kaboni wakuda ndi chitsulo pamwamba pa ulusi wamba wopangidwa kudzera mu njira zomaliza pamwamba. Njira yophimba chitsulo ndi yovuta komanso yokwera mtengo, ndipo ikhoza kukhala ndi zotsatirapo zina pa momwe ulusiwo umagwirira ntchito monga momwe umagwirira ntchito ndi manja.
2.7 Ulusi Woyendetsa Zinthu Zachilengedwe Wopangidwa ndi Njira Yozungulira Yophatikizana
Njira yozungulira yophatikizana ndi kupanga ulusi umodzi wokhala ndi zigawo ziwiri kapena zingapo zosiyana kudzera mu msonkhano wapadera wozungulira wophatikizana mu njira yozungulira yomweyi pogwiritsa ntchito ma polima awiri kapena angapo okhala ndi zinthu zosiyanasiyana kapena makhalidwe osiyanasiyana. Pokonzekera ulusi wotsutsana ndi static, ma polima okhala ndi conductivity kapena ma polima owonjezeredwa ndi zinthu zoyendetsera nthawi zambiri amagwiritsidwa ntchito ngati gawo limodzi ndipo amaphatikizidwa ndi ma polima wamba opanga ulusi. Poyerekeza ndi njira zina zokonzekera ulusi wotsutsana ndi static, ulusi wokonzedwa ndi njira yozungulira yophatikizana uli ndi makhalidwe okhazikika a antistatic ndipo sungakhudze kwambiri makhalidwe oyambirira a ulusi.
3 Kugwiritsa Ntchito Ulusi Wosasinthika
M'moyo watsiku ndi tsiku, pamene mpweya uli wouma kwambiri m'nyengo yozizira, magetsi osasunthika amatha kupangidwa pakati pa khungu la munthu ndi zovala zake, ndipo magetsi osasunthika nthawi yomweyo amatha kufika pa ma volts zikwi makumi ambiri pazochitika zoopsa, zomwe zimapangitsa thupi la munthu kukhala losasangalala. Mwachitsanzo, kuyenda pa makapeti kumatha kupanga ma volts 1500-35000 a magetsi osasunthika, kuyenda pansi pa vinyl resin kumatha kupanga ma volts 250-12000 a magetsi osasunthika, ndipo kukanda pampando m'nyumba kumatha kupanga ma volts oposa 1800 a magetsi osasunthika. Mlingo wa magetsi osasunthika umadalira makamaka chinyezi cha mpweya wozungulira. Nthawi zambiri, pamene kusokoneza kwa magetsi osasunthika kupitirira ma volts 7000, anthu amamva kugwedezeka kwa magetsi.
Magetsi osasunthika ndi owopsa kwa thupi la munthu. Magetsi osasunthika amatha kuwonjezera kuchuluka kwa alkali m'magazi, kuchepetsa kuchuluka kwa calcium m'magazi, ndikuwonjezera kutuluka kwa calcium mumkodzo. Izi zimakhudza kwambiri ana omwe akukula, okalamba omwe ali ndi calcium yochepa kwambiri m'magazi, komanso amayi apakati ndi amayi oyamwitsa omwe amafunikira calcium yambiri. Kuchuluka kwa magetsi osasunthika m'thupi la munthu kungayambitse kufalikira kwa ma cell a mitsempha ya ubongo, kukhudza dongosolo la mitsempha, kusintha kwa pH ya magazi ndi mawonekedwe a okosijeni m'thupi, kukhudza thanzi la thupi, komanso kumayambitsa zizindikiro monga chizungulire, mutu, kukwiya, kusowa tulo, kusowa chilakolako, komanso kusokonezeka kwa maganizo. Magetsi osasunthika amathanso kusokoneza kuyenda kwa magazi a anthu, chitetezo chamthupi ndi machitidwe amanjenje, kukhudza ntchito yachibadwa ya ziwalo zosiyanasiyana (makamaka mtima), ndipo kungayambitse kugunda kwa mtima kosazolowereka komanso kugunda kwa mtima msanga. M'nyengo yozizira, pafupifupi gawo limodzi mwa magawo atatu a matenda amtima ndi okhudzana ndi magetsi osasunthika. Kuphatikiza apo, m'malo omwe amayaka moto komanso ophulika, magetsi osasunthika m'thupi la munthu angayambitse moto.
Nthawi yotumizira: Disembala-09-2025
