Kumfa polystyrene (EPS)

EPS polymer ne mai nauyi.Saboda ƙananan farashinsa, shi ne kuma mafi yawan kayan kumfa da aka fi amfani dashi a cikin dukan filin marufi, wanda ya kai kusan 60%.Ana yin resin polystyrene ta hanyar ƙara wakili mai kumfa ta hanyar yin kumfa, warkewa, gyare-gyare, bushewa, yankan da sauran matakai.Rufaffen tsarin rami na EPS yana ƙayyade cewa yana da kyakkyawan rufin zafi da ƙarancin zafin jiki.Matsakaicin zafin jiki na allunan EPS na ƙayyadaddun bayanai daban-daban shine tsakanin 0.024W/mK ~ 0.041W/mK Yana da kyakkyawan adana zafi da tasirin adana sanyi a cikin dabaru.

Duk da haka, a matsayin kayan aikin thermoplastic, EPS zai narke lokacin da mai tsanani kuma ya zama mai ƙarfi lokacin da aka sanyaya, kuma zafin nakasar zafinsa yana kusa da 70 ° C, wanda ke nufin cewa EPS incubators da aka sarrafa a cikin marufi na kumfa yana buƙatar amfani da ƙasa 70 ° C.Idan zafin jiki ya yi yawa, 70 ° C, ƙarfin akwatin zai ragu, kuma za a samar da abubuwa masu guba saboda rashin daidaituwa na styrene.Don haka, sharar EPS ba za ta iya zama ta yanayi ba, kuma ba za a iya ƙone ta ba.

Bugu da kari, taurin EPS incubators ba shi da kyau sosai, aikin cushioning shima gabaɗaya ne, kuma yana da sauƙin lalacewa yayin sufuri, don haka galibi ana amfani dashi don amfani na lokaci ɗaya, don ɗan gajeren lokaci, sanyi mai nisa. safarar sarkar, da kuma masana'antun abinci kamar nama da kaji.Trays da kayan marufi don abinci mai sauri.Rayuwar sabis na waɗannan samfuran yawanci gajere ne, kusan 50% na samfuran Styrofoam suna da rayuwar sabis na shekaru 2 kawai, kuma 97% na samfuran Styrofoam suna da rayuwar sabis na ƙasa da shekaru 10, yana haifar da kumfa EPS da za a soke shekara. shekara, duk da haka,EPS kumfaba shi da sauƙi a ruɓe da sake yin fa'ida, don haka shine babban abin da ke haifar da gurɓatawar fari na yanzu: EPS yana da fiye da kashi 60% na farin datti a cikin gurbatar ruwa!A matsayin kayan marufi na EPS, yawancin wakilan kumfa na HCFC ana amfani da su a cikin tsarin kumfa, kuma yawancin samfuran za su sami ƙamshi na musamman.Matsakaicin raguwar ozone na HCFCs shine sau 1,000 na carbon dioxide.Saboda haka, tun daga 2010s, Majalisar Dinkin Duniya, Amurka, Tarayyar Turai, China, Koriya ta Kudu, Japan da sauran kasashe (kungiyoyi) da yankuna masu dacewa sun zartar da doka don hana ko ƙuntata amfani da robobi guda ɗaya, ciki har da Styrofoam. , kuma 'yan adam sun yi tilas su tsara "Taswirar Taswirar Hanya".