Ammonium polyphosphate (APP) ndi mankhwala osapangidwa omwe amagwiritsidwa ntchito kwambiri, omwe amadziwika kwambiri chifukwa cha ntchito yake yoletsa moto komanso feteleza. Makhalidwe ake apadera amawapangitsa kukhala ofunikira kwambiri pa ntchito zosiyanasiyana, kuphatikizapo mapulasitiki, nsalu, ndi zokutira. Kumvetsetsa kukhazikika kwa kutentha kwa ammonium polyphosphate ndikofunikira kwambiri kuti igwiritsidwe ntchito bwino, makamaka m'malo otentha kwambiri.
Kuwonongeka kwa ammonium polyphosphate nthawi zambiri kumayamba kutentha kwambiri, nthawi zambiri pafupifupi madigiri 200 mpaka 300 Celsius (392 mpaka 572 Fahrenheit). Pa kutentha kumeneku, mankhwalawa amasinthidwa mosiyanasiyana zomwe zingayambitse kutulutsidwa kwa ammonia ndi phosphoric acid. Pamene kutentha kukukwera kwambiri, makamaka kupitirira madigiri 300 Celsius, njira yowonongeka imathamanga, zomwe zimapangitsa kuti kapangidwe ka polymeric ka APP kawonongeke.
Kuwonongeka kwa kutentha kwa ammonium polyphosphate kungakhudzidwe ndi zinthu zingapo, kuphatikizapo kulemera kwake kwa mamolekyulu, kukhalapo kwa zowonjezera, ndi kapangidwe kake komwe kamagwiritsidwa ntchito. Mwachitsanzo, kulemera kochepa kwa mamolekyulu APP kumakonda kuchepa kutentha poyerekeza ndi mitundu yolemera kwambiri ya mamolekyulu. Kuphatikiza apo, kupezeka kwa zinthu zina mu kapangidwe kake kophatikizana kungapangitse kuti njira yowonongeka ikule kapena kulepheretsa, kutengera momwe kutentha kwawo kumakhalira komanso momwe amagwirira ntchito ndi APP.
Chimodzi mwa zinthu zofunika kwambiri pa kutentha kwa ammonium polyphosphate ndi ntchito yake ngati choletsa moto. Ikayikidwa pa kutentha, APP imatha kutulutsa mpweya wosayaka, womwe umachepetsa nthunzi yoyaka ndikuthandizira kuletsa kuyaka. Katunduyu ndi wofunika kwambiri pakugwiritsa ntchito komwe chitetezo cha moto chili chodetsa nkhawa. Komabe, kugwira ntchito kwa APP ngati choletsa moto kumagwirizana kwambiri ndi kukhazikika kwake pa kutentha. Ngati APP iwonongeka mofulumira kwambiri, singapereke mulingo wofunikira wa chitetezo.
Kuphatikiza apo, zinthu zomwe zimawonongeka za ammonium polyphosphate zimathanso kukhala ndi zotsatirapo pa chilengedwe ndi thanzi la anthu. Mwachitsanzo, kutulutsidwa kwa ammonia kungayambitse kuipitsa mpweya ndipo kungayambitse zoopsa paumoyo ngati utapumidwa mochuluka. Chifukwa chake, kumvetsetsa kutentha kwa kuwonongeka ndi kutulutsidwa kwa mpweya pambuyo pake ndikofunikira poyesa chitetezo ndi momwe zinthu zomwe zili ndi APP zimakhudzira chilengedwe.
Pakugwiritsa ntchito zinthu zenizeni, ndikofunikira kuganizira momwe zinthu zilili komanso momwe kutentha kungawonongeke pogwiritsa ntchito ammonium polyphosphate. Opanga nthawi zambiri amachita kusanthula kutentha, monga kusanthula kwa thermogravimetric (TGA), kuti adziwe kutentha komwe kumawonongeka komanso kukonza bwino mapangidwe kuti akhale olimba komanso ogwira ntchito bwino.
Pomaliza, ammonium polyphosphate imayamba kutsika kutentha pafupifupi madigiri 200 mpaka 300 Celsius, ndipo kuwonongeka kwakukulu kumachitika kutentha kwambiri. Kukhazikika kwa kutentha kwake ndikofunikira kwambiri pakugwira ntchito kwake ngati choletsa moto komanso kugwiritsidwa ntchito kwake konse m'magwiritsidwe osiyanasiyana. Kumvetsetsa mphamvu za kutentha kumeneku sikungothandiza pakupanga zinthu zotetezeka komanso zothandiza komanso kumatsimikizira kutsatira malamulo azachilengedwe ndi azaumoyo. Pamene kafukufuku akupitilira, kuzindikira kwina pa momwe kutentha kwa ammonium polyphosphate kumakhudzira kugwiritsa ntchito kwake komanso chitetezo chake m'makampani.
Sichuan Taifeng New Flame Retardant Co., Ltdndi wopanga yemwe ali ndi zaka 22 zakuchitikira popanga zinthu zoletsa moto za ammonium polyphosphate, ndipo zinthu zathu zodzitamandira zimatumizidwa kunja kwambiri.
Woyimira wathu woletsa motoTF-201Ndi yochezeka komanso yotsika mtengo, imagwiritsidwa ntchito bwino mu zophimba za intumescent, zophimba kumbuyo kwa nsalu, mapulasitiki, matabwa, zingwe, zomatira ndi thovu la PU.
Ngati mukufuna kudziwa zambiri, chonde titumizireni uthenga.
Lumikizanani: Cherry He
Email: sales2@taifeng-fr.com
Nthawi yotumizira: Okutobala-30-2024
