POM Sheet Chemical Ukumelana: Izindawo ezifanele

2025-09-27 15:26:58

　　Ukukhethwa kwepulasitiki yobunjiniyela ukuze kusetshenziswe uhlelo oluthile ngokusebenza kwalo lapho kuvezwa khona izimo zamakhemikhali ezinzima, okucaciswe ngokuqinile ku-acestal eqinile, eqondile, okwenza kube yisinqumo esijwayelekile ku-izilungiselelo eziningi zezimboni ngenkathi singafaneleki kwabanye. Idume amandla ayo aphezulu, ukuqina, ukuqina okuyisici, kanye nengxabano ephansi, i-POM sheet impahla iyisixazululo sezingxenye eziqondile njengamagiya, kepha ukusebenza kwayo isikhathi eside kuncike ngqo kumahindieu. Ukuqonda ubunjalo bokumelana nokuphikiswa kwe-POM akuyona nje into yohlu amakhemikhali ahambisanayo futhi angafanele; Kudinga ukwazisa ngesakhiwo se-polymer's molecular kanye nezinqubo lapho ama-ejenti ahlukene amakhemikhali angaqala khona ukuwohloka, njengokuvuvukala, ukuqhekeka, noma ukulahleka kwezakhiwo eziyinhlekelele. Lolu lwazi lubaluleke kakhulu onjiniyela kanye nabaqambi basebenzise izingxenye ezithembekile ze-pom, baqinisekise ukuthi bahlose ukwehluleka ngaphambi kwesikhathi, ngaleyo ndlela baqinisekise ukuphepha nokuphila isikhathi eside komkhiqizo wokugcina.

　　Emgogodleni wayo, uPom ekhombisa ukumelana okuhlukile kohlu olubanzi lwama-hydrocarbons, ama-solvents ezi-organic, namakhemikhali angathathi hlangothi, awona isisekelo sokusetshenziswa kwawo okubanzi kwezimoto, ama-elekthronikhi abathengi, kanye nemishini. Kukhombisa ukuzinza okuvelele ngokumelene ne-aliphatic kanye ne-aromatic hydrocarbons, kufaka phakathi amafutha anjengophethiloli nodizili, amafutha okugcoba, amafutha, nama-solvents anjengomoya omhlophe. Lokhu kwenza kube yinto efanelekile yezakhi zohlelo lwamafutha, izigqoko zikaphethiloli, kanye nezingxenye ezisebenza ngaphakathi kwemihlangano egcotshisiwe. Ngaphezu kwalokho, i-POM ithuluzi lokuvezwa kwezinto eziningi, kufaka phakathi i-ethanol ne-isopropanol, ikakhulukazi emazingeni okushisa asekamelweni, kanye nama-ester, ama-ketones afana ne-acetone, kanye nomsebenzi omncane. Ukumelana kwayo kuma-acid abuthakathaka nezisekelo nakho kukuhle impela, ukuvumela ukuthi kwenziwe ngokuthembekile lapho kuvezwa izinto ezinjengezixazululo zokuhlanza lapho kuhlala khona okuphansi. Ukuphikiswa okubanzi okubanzi ku-fluids ezijwayelekile zezimboni, kuhlangene nezakhiwo zayo ezinhle kakhulu zemishini, yikhona okuqinisa isikhundla se-pom njenge-thermoplastic ephezulu ye-thermoplastic yezicelo ezidinga ukunemba nokuqina ezindaweni eziyinselele.

　　Kodwa-ke, amandla aphawulekayo wokuphikiswa kwamakhemikhali we-POM alwa ngokwengeziwe ubungozi bayo obuhlukile, ngokuyinhloko nama-acid aqinile nezisekelo eziqinile. Ukuvezwa kokugxila kokugxila kwama-inorganic acid, njenge-sulfuric acid, i-hydrochloric acid, ne-nitric acid, kuzoholela ekunciphiseni okusheshayo nokuqinile kwe-polymer. Ama-molecule e-acid ahlasela ukuxhumana kwe-acetal esikhwameni se-polymer, okubangela ukugcinwa kwedephomeriya Ngokufanayo, izixazululo eziqinile ze-caustic, njenge-sodium hydroxide ye-sodium, nazo zingahlehlisa uPom, ikakhulukazi emazingeni okushisa aphakeme. Olunye usongo olubalulekile luvela kuma-oxidizing agents. Ama-halogens afana ne-chlorine ne-bromine, kanye nama-oxidizers afana ne-hydrogen peroxide noma i-chlorine dioxide, kungadala ukonakala kwe-oxidation, okuholela ekufezekiseni nasekuholeni. Mhlawumbe omunye wababucayi obukhulu, futhi kwesinye isikhathi obunganakwa, ubungozi buya ekukhanyeni kwe-ultraviolet. I-POM engagunyazwanga inesimo sezulu esingesihle kakhulu futhi izodalula lapho ivezwa ukukhanya kwelanga ngokuhamba kwesikhathi; Noma yiluphi uhlelo lokusebenza lwangaphandle, amamaki ashuniwe e-UV e-POM kumele acaciswe ukuvikela ukushaywa komhlaba kanye nokulahleka kwezakhiwo.

　　Ukusetshenziswa okungokoqobo kwalolu lwazi kufinyelela ngaphezu kohlu olulula lwe- "Good" kanye "oluhle" namakhemikhali. Izimo zangempela zomhlaba ziletha okuguquguqukayo okubucayi, okubaluleke kakhulu lokushisa nokucindezelwa okuqhubekayo. Amakhemikhali amakhemikhali angabekezelela emazingeni okushisa asekamelweni ukuze kuvezwa isikhathi esifushane kungadala ukuvuvukala noma ukuqhekeka kwengcindezi emazingeni okushisa aphakeme, athi ama-80 ° C noma ngaphezulu. Isibonelo, ngenkathi uPom enokumelana kahle namanzi okushisa asekamelweni, ukuvezwa isikhathi eside emanzini ashisayo ngenhla kwama-60 ° C kungaholela e-hydrolysis, inqubo lapho ama-molecule wamanzi aphula khona amaketanga we-polymer. Lokhu kucatshangelwa okubalulekile kwezakhi ezisetshenziswayo noma amasistimu wamapayipi. Ngaphezu kwalokho, ukuba khona kwengcindezi yemishini eqhubekayo, njengomthwalo weTensile oqhubekayo, kungasheshisa ukuhlasela kwamakhemikhali entweni ethile eyaziwa ngokuthi yingcindezi yemvelo yokuqhekeka. Ingxenye ye-POM ngaphansi komthwalo ingahle yehluleke lapho ivezwa kumakhemikhali angalimaza isampula engafakwanga. Ngakho-ke, ukuhlolwa ngaphansi kwezimo ezilingisa imvelo yangempela yenkonzo - kufaka phakathi ukugxila kwamakhemikhali, izinga lokushisa, kanye nomthwalo wemishini - kunconyelwa kakhulu ukuthola izicelo ezibucayi. Le ndlela esebenzayo ivumela ukuqinisekiswa kokukhethwa kwezinto ezibonakalayo noma ukuhlonza okufika ngesikhathi kwesidingo senye indlela, efana ne-PTFE yokumelana ngokweqile kwamakhemikhali noma i-PPS yokushisa okushisa okuphezulu nokuqina kwamakhemikhali.

　　Ekuphetheni, ukufaneleka kwephepha le-POM lesimo samakhemikhali anikezwe ngumbuzo wokufanisa amandla alo abhalwe kahle ngokumelene nezinselelo zesicelo esithile. Ukumelana kwayo okuphezulu kwe-hydrocarbons, ama-solvents, namakhemikhali angathathi hlangothi kwenza kube ngumpetha ezinkambeni zemishini nasezithunjini. Kodwa-ke, kushiwo ukuthambekela kuma-acid amaminerali aqinile, izisekelo eziqinile, ama-oxidizing agents, futhi ukukhanya kwe-UV kusho imingcele ecacile yokusebenzisa kwayo. Isinqumo sokugcina kufanele singaziswa nje ngulwazi lwamakhemikhali, kepha ngombono ophelele wezimo zokusebenza, kufaka phakathi okuhlushwa, izinga lokushisa, isikhathi sokuvezwa, kanye nokuvezwa kwanoma yikuphi ukucindezelwa kwemishini. Ngokucabanga ngokucophelela lezi zinto, onjiniyela bangacacisa ngokuzethemba lapho bezokwazi ukugqama futhi bagweme izingibe zalo, izinto eziphakeme ezinamandla, izinto eziphansi zitholwe ngokuphelele empilweni yenkonzo ephephile yonke.