Iraba Yemvelo. incazelo

iraba Yemvelo kuyinto umzimba amorphous, kokuba ikhono crystallize. impahla yemvelo (ingelashwa) - carbon kungekho nto enemibala emihle noma amhlophe. iraba Yemvelo akuyona oncibilikayo utshwala, amanzi, acetone kanye nezinye iziphuzo. I-hydrocarbon okunamafutha kanye Aromatics (ethers, benzene, uphethiloli, nabanye) ke siyakhukhumala futhi ancibilikisa kamuva. Ngenxa yalokho, kwakhiwa izixazululo colloidal, okuyinto kabanzi technical izidingo.

iraba Yemvelo has a ukwakheka kwama-molecule iyunifomu. Indaba ine izici okusezingeni eliphezulu ngokomzimba nezobuchwepheshe, kalula icutshungulwe ku imishini ezivamile.

iraba Yemvelo has kuyaqina okusezingeni eliphezulu (kuyaqina). Indaba ukwazi ukuthi uphinde ezakheke yokuqala uma bengasekho ukuthonya amabutho oholele ukusonteka yayo. Kufanele sisho ukuthi kuyaqina egcinwa ngokwanele ububanzi lokushisa ububanzi. Nokho, isitoreji eside icuphe ukuqina impahla.

iraba yemvelo, kushiywa munye namashumi ayisishiyagalolunye nanhlanu degrees esobala futhi kube lukhuni, ezingeni lokushisa phakathi zero futhi eziyishumi degrees - opaque nokukhumuzeka, nge amabili - angenisa ukukhanya, nokunwebeka futhi ezithambile. Lapho ukufuthelana ngenhla 50 ° C okokusebenza iba plastic kanye okunamathelayo.

Yokuchuma umswakama waso nganoma degrees ayisishiyagalombili yikhulu degrees amabili, ke ingena retinoid isimo uketshezi, ngemva kokuhlela ukuze uthole umkhiqizo yasekuqaleni engenakwenzeka. Lapho izinga lokushisa evuka ukuba abangamakhulu amabili namashumi ayisihlanu amadigri ezingamakhulu amabili, iraba zemvelo iqala ukubola. Umphumela eziningi izinto eziwuketshezi gaseous.

iraba Natural libe yisivikelo esihle. Ngaphezu kwalokho, ukwaziswa has a igesi namanzi ukumelana ongaphakeme.

Material ngokwanele kancane oxidized ngu-mpilo emkhathini. inqubo okusheshayo senzeka ngaphansi kwethonya oxidants zamakhemikhali.

Futhi zonke ezinye izindawo, iraba has plasticity. Uyakwazi ukugcina ezakheke, okuyinto u aluthola ngaphansi kwethonya iziphi izici zangaphandle. Plasticity, esizibonakalisa ku machining bafudumale ingenye sezici into. Ngenxa yokuthi irabha anezakhi nokunwebeka kanye plastic, futhi ibizwa nangokuthi i-material plasto-nokunwebeka.

iraba Yemvelo kabani ifomula - (C5H8) n, kuhlanganisa molecule equkethe inqwaba izibopho kabili. Material iyaphendula ngempela kalula izinto eziningi. Ukwandiswa reactivity ngenxa yesimo amakhemikhali impahla unsaturated. Kuhle ukusebenzisana kwenzeka kulezo izixazululo lapho iraba iqukethe molecule izinhlayiya elikhulu colloidal.

Eqine noma Ukupholisa ngomoya ngokudlulisela impahla esimweni crystalline kusukela amorphous (crystallization). Le nqubo ithatha indawo ngesikhathi esithile, hhayi ngokuphazima kweso. Zinhlayiya ube usayizi encane, nanini ukuma yejeyomethri, futhi emaphethelweni usongene yabo.