Tag: Polypropylene PP Material

Polypropylene, wanda aka rage shi azaman PP, shine polymer wanda aka kafa ta hanyar polymerization na propylene. Farin abu ne mai kakin zuma mai haske da haske. Tsarin sinadaransa shine (C3H6) n, kuma yawansa shine 0.89-0.91g/cm3. Yana da flammable kuma yana da wurin narkewa na 164-170 ℃. Yana laushi a kusa da 155 ℃ kuma ana iya amfani dashi a cikin kewayon zafin jiki na -30 zuwa 140 ℃. Yana iya tsayayya lalata daga acid, alkalis, gishiri mafita, da daban-daban Organic kaushi kasa 80 ℃, amma zai iya bazu a karkashin high zafin jiki da hadawan abu da iskar shaka. Polypropylene ne mai babban aikin thermoplastic roba guduro. Filastik ne mara launi da tsaka-tsaki mai sauƙin nauyi na gabaɗaya tare da kyakkyawan juriya na sinadarai, juriya na zafi, rufin lantarki, ƙaƙƙarfan kayan inji mai ƙarfi, da kyakkyawan aikin sarrafa kayan sawa. Ana amfani da shi sosai wajen samar da samfuran fiber kamar su tufafi da barguna, kayan aikin likitanci, motoci, kekuna, sassa, bututun jigilar kayayyaki, kwantenan sinadarai, har ma a cikin marufi na abinci da magunguna.

Yankunan jiki da na kaya

1. Marasa wari, mara daɗi, kuma mara guba. Shi ne mafi sauƙi a cikin resins da aka saba amfani da su;
2. Kyawawan kaddarorin inji, gami da ƙarfin juriya, ƙarfin matsawa, da taurin kai, ƙwaƙƙwaran ƙarfi da juriya na gajiya. Ƙaƙwalwar aiki da aka yi da PP na iya jurewa fiye da 7 × 107 nadawa da lankwasa ba tare da lalacewa ba, kuma tasirin tasiri a ƙananan zafin jiki ba shi da kyau. Ƙarfin ƙarfi na PP shine gaba ɗaya 21-39 MPa; Lankwasawa ƙarfi ne 42-56 MPa, matsa lamba ƙarfi ne 39-56 MPa, elongation a hutu ne 200% ~ 400%, da daraja tasiri ƙarfi ne 2.2-5 kJ / m2. Ƙarfin tasiri mai ƙarancin zafin jiki shine 1-2 kJ/m2. Rockwell taurin R95 ~ 105
3. Kyakkyawan juriya mai zafi, ci gaba da amfani da zafin jiki na iya kaiwa 110-120 ℃
4. Kyakkyawan kwanciyar hankali na sinadarai, sai dai masu ƙarfi masu ƙarfi, ba ya amsawa da yawancin magungunan sinadarai. Masu narkewa ba za su iya narkar da PP a cikin zafin jiki ba, kawai wasu mahaɗan halogenated, hydrocarbons na kamshi, da maɗauran kitse mai ƙarfi na iya haifar da kumburi. Yana da tsayayyar ruwa na musamman;
5. Kyawawan kaddarorin lantarki, kyawawan sassa masu rufe wutar lantarki masu ƙarfi, da kyawawan kaddarorin wutar lantarki a cikin mahalli mai ɗanɗano;
6. Saboda kasancewar yawancin atom na methylated carbon atom akan babban sarkar PP, hydrogen da ke kan atom ɗin carbon na uku ana samun sauƙin kai wa oxygen, don haka juriya na yanayi da juriyar tsufa na PP ba su da kyau, kuma dole ne a ƙara antioxidants ko ultraviolet absorbers. ;
7. An yi amfani da beraye da baki tare da kashi 8g/kg na tsawon sau 1-5, kuma ba a sami alamun bayyanar cututtuka masu guba ba. Berayen sun shaka samfuran bazuwar polypropylene mai zafi zuwa 210-220 ℃ na sau 30, sa'o'i 2 kowane lokaci, kuma sun nuna alamun mucosa na ido da haushin fili na numfashi na sama. An haramta amfani da kayan da aka sake yin fa'ida na polypropylene don shirya abinci, iri ɗaya da polyethylene.