Sake amfani da kwalabe na filastik - rayuwa ta biyu na polyethylene terephthalate (PET)

Juyin filastik kwalabe - daya daga cikin kwatance na yin amfani da sake yin fa'ida kayan for sabuntawa da hanya tushe na cikin polymeric kayan. Yayinda aka sake magance matsalar sake amfani da sharar gida, an samo kayan da za a iya mayar da su don samarwa, koda la'akari da wasu gazawar (fasaha, tsabtace jiki, majalisa, sanitary) hade da sake amfani da polymers.

Saboda gaskiyar cewa polyethylene terephthalate (PET) yana da isasshen ma'aunin gine-ginen injuna, aiki na kwalabe na filastik daga gare shi shine mafi yawan aikin da aka kafa ta hanyar yin amfani da kayan aiki na musamman na polymeric. Akwai manyan nau'i biyu na aiki - inji da kuma sinadaran. A matsayinka na mai mulki, a yawancin lokuta, kwalabe PET suna sarrafawa ta hanyar inji, tun da yake sunadarai sun buƙaci ƙãra kayan bukatu da kuma amfani da tsada masu tsada. Hanyar hanyar injiniya ba ta buƙatar lalata kayan aiki. An fara samo kwalabe PET daga wasu nau'i-takarda da aka sanya daga polymer (polyethylene, PVC) da kuma abubuwan waje (matosai, tarkace). Dangane da bukatun don samfurin ƙarshe, ana iya yin kwalabe da launi da ma ta hanyar polymer.

Aiki na farko na kwalabe na filastik yana faruwa ne a kan warkakewa na wuka, inda daga sakamakon fasaha na fasaha, an kafa kwayoyin PET na 0.5-10 mm. A sakamakon polymer marmashi aka wanke da wani bayani da caustic soda da ruwa, bayan wanda shi aka bushe a kan wani musamman fasahar, da zafi na 0.02-0.05% da kuma zazzabi na 130 ° C. Tsarin bushewa yana da mahimmanci, rashin bin ka'idodi da ake buƙatarwa yana haifar da mummunar deterioration a cikin ingancin kayan aikin sakandare na biyu.

Bayan bushewa, agglomeration na kayan aiki ya faru, sakamakon sakamakon fasaha maras amfani da aka samu a cikin matakan da suka wuce an sassare shi cikin ƙananan lumps. A wannan mataki, za'a iya kammala aiki na kwalabe na filastik, tun da za'a iya amfani da agglomerate a matsayin kayan albarkatu. Domin yada halin da ake ciki na ma'anin sake yin amfani da shi, anada shi. A sakamakon haka, ƙwayoyin PET da aka kula da su sun zama masu ƙari, kuma abin da ya samo asali ya fi sauki don amfani a nan gaba kuma don samun kayan aiki masu dacewa akan kayan aiki na yau da kullum. Babban mahimmancin amfani da kayan albarkatu daga lalata PET shine samar da fina-finai, fibers da kwalabe. A matsayinka na al'ada, la'akari da kayan aikin injiniya da rheological (wadataccen abu) na kayan aikin da aka gyara daga PET, an yi amfani dashi don samar da kwantena don samfurori daban-daban. A matsayin marufi don kayan abinci, an yi amfani da PET mai sarrafawa. Fiji daga ƙananan polyethylene terephthalate shine mafi sauƙin sarrafa shi a cikin ɗakunan da aka sanya su don yin takalma da tufafi ko kayan aiki. Haka kuma an sake yin fa'ida zuwa tsirar geotextile syntepon, amo rufi kayan, absorbent da tacewa abubuwa, lantarki kayayyakin, kaya (da zaben 'yan wasa), mota sassa.