Zaɓi Harshe 1. Roba
Da duniya yarda da ma'anar roba an kawo sunayensu daga Astm D1566 (jama'ar Amurka don gwaji da kayan).
Bayyani:
Roba abu ne mai saurin murmurewa da karfi da karfi bayan manyan dorormation, kuma ana iya gyara ( maras jin ciwo ). An gyara roba da gaske wanda insoluy (Amma ɗanye ) A cikin tafasa benzene, Methyl Ethyl keten , ko Ethanol-Toluene magance gauraya.
A zazzabi na ɗakin (18-29 ° C), lokacin da aka gyara wani yanki na roba sau biyu, a kan sake shi na minti daya zuwa tsawon lokacinta.
Abubuwan da aka nuna sun bayyana waɗannan halaye kamar yadda roba.
Bayanin kula:
Roba wani abu ne na musamman na aikace-aikacen aikace-aikace da sarrafa kaddarorin kuma na aji na Kayan aikin polymer.
Roba nune-nunin Babban elasticity a zazzabi a dakin.
Kalmar "mai gyara" tana nufin iyawarsa ta sha m.
Roba mai rauni ne wanda insoluy amma ɗanye a cikin sauran ƙarfi.
2. Rab roba
Rank roba Yana nufin roba mara kyau wannan ba a hade shi da ƙari ba kuma ba shi da yawa farfadowa . Yawanci ya ƙunshi Linear macromolecules ko Branched Linear polymers kuma shine soxulle a Abubuwan kwayoyin cuta.
Rank roba galibi ana amfani dashi don samar da daban-daban Abubuwan da ba su dace ba , kamar Gasaye na wucin gadi, unvulcanized gidajen abinci , da roba mai ɗora.
Waɗannan samfuran suna nuna kyawawan abubuwa na teku da faɗi , amma ƙasa zafi juriya da injiniya , sa su dace da Pre-sarrafawa ko Matakan Semi-Unit na masana'antun roba.
3. Kashi
Rubutun roba (roba Yana nufin Rank roba wanda ya gauraya da daban-daban Haɗin kai Amma ba shi da wahala m.
Wakilan Haɓaka gama gari sun hada da Jami'an marasa ƙarfi, Masu hanawa, Masu aiki, maido da fasali , da magunguna.
Gidan roba hidima a matsayin mabudi tsaka-tsaki kayan don \ domin Abubuwan da ba su dace ba , kuma yana iya zama gaba maras jin ciwo samar da sassan roba tare da babba elasticity, tsayayya da juriya , da ƙarko.
4. Roba mai rauni
Roba mai rauni Yana nufin maharan roba cewa, karkashin takamaiman ƙarfin zafi, matsa lambu , da lokaci , sha a amsa martaba , canzawa Linear macromolecules a cikin Tsarin hanyar sadarwa uku.
Gabaɗaya wanda insoluy a cikin sauran ƙarfi da nuna kyakkyawan injiniya, elasticity, Abrasion juriya , da zafi juriya.
Wannan nau'in roba ana amfani dashi sosai a cikin samar da daban-daban sassan roba , kamar Kayan aiki na Kulla, Sears, O-zobba, cable sheaths , da Kayan masana'antu.
Da bambanci, Abubuwan da ba su dace ba ana amfani da shi da farko a ciki tsari canji ko kariya na ɗan lokaci Aikace-aikace, kuma ba zai iya tsayayya da bayyanar dogon lokaci ba babban zazzabi, babban matsin lamba , ko yanayin sunadarai.
Da duniya yarda da ma’anar roba an kawo sunayensu daga Astm D1566 (jama’ar Amurka don gwaji da kayan).
