Dabaru da kuma aikin aikin na roba galibi ya dogara da tsarin roba .}
(1) Tsarin kwayoyin na roba shima wani yanki ne na Macromemular, da kuma nauyin kwayar halittar ruwa {{2} da girman kwayar cutar macromemular tana da babban tasiri a kan karfin roba . {zuwa ga karfin roba . { kawai lokacin da ƙwayoyin kwayoyin halitta ya kai wani matakin da ya nuna wani ƙarfi {4} etara kwayar cutar ta roberation, don ƙara digiri na jiki, don ƙara yawan filastik, inganta aiki yanayi .
Daga Geometric ja ƙirar sarkar kwayar cuta ta roba, ana iya raba shi zuwa nau'ikan guda uku: nau'in layi, wanda aka san sarkar jiki, tare da nau'in ƙwayar cuta, tare da nau'in ƙwayar cuta (kuma an san shi da nau'in ƙwayar cuta).
(2) An kira jihar tarin kwayoyin roba {{1} Kayayyakin roba yana da kaddarorin mai ƙarfi, saboda duk sarkar macromolecular jama'a, saboda Sarkar kwayoyin cuta ba zata iya fitowar dangi ba, na iya kula da wani tsari da ƙarfi mafi girma {4} roba shima, kamar yadda zafin rana {asarar gas {{5}
(3) roba roba na roba yana da kyau elasticity, ƙari, yana da wasu halaye na bayyananniyar ruwa, wanda ake amfani da roba a matsayin creep na vhicealics, kamar yadda ake bayyana jerin abubuwan da aka bayyana a matsayin creep, shakatawa da kuma tashin hankali na ciki .
(4) Kodayake roba na roba yana da babban elasticity, haɗi, latsa ko mormentarancin yanayin ruwa ya bambanta da na roba, wanda zai iya A rage yawan tasirin girma ta ƙara yawan zafin jiki {{3} lacular da nauyi na dangi na iya rage yawan roba {{{{asar ƙwayoyin roba {{4}
(5) A ƙarƙashin yanayin roba na rauni na roba, da roba roba tana da tsarin sinadarai, kuma ana kiranta roba mai narkewa {{3} na zahiri. Vulcanization {{4}
Canjin kayan roba yayin rauni shine sakamakon canjin kwayar halitta {{{asar da ba ta dace ba, a cikin sarkar kwayoyin halitta tsakanin samuwar sarkar transvers tsakanin samuwar sarkar A cikin tsarin sadarwa na sararin samaniya, don haka ban da haɗin gwal tsakanin kwayoyin, a cikin ƙarfi na gungumomi sama da roba na ƙarshe {{{{{{{kashi na ƙarshe a cikin samfuran roba {{3}
Tare da ci gaban samarwa na bovine, manufar mai rauni kuma tana da sabon ci gaba, ko da yawan zafin jiki na iya zama sananne a cikin ƙananan mawuyacin hali, da kuma hanyoyi na jiki daban-daban.