Caag cayriin ah oo silikoon ah ayaa ah shayga xoojinta caag ka samaysan. Astaamaha caagga isku dhafan ee laga sameeyay noocyada kala duwan ee caag cayriin way kala duwan yihiin
si weyn. Shuruudaha caag cayriin waxay ku kala duwan yihiin noocyada kala duwan ee caag isku dhafan.Astaamaha aasaasiga ah ee caag cayriin waxaa lagu go'aamiyaa saddex tilmaame: cufnaanta molar, maadada vinyl iyo walxaha kacsan.
Inta lagu jiro habaynta, caag cayriin ah oo leh miisaanyo unugyo kala duwan iyo vinyl ayaa inta badan loo isticmaalaa isku darka qayb gaar ah. Markasta oo ay sii badato adkaanta alaabta, ayaa waxa ay saraysaa maadada vinyl ee caag cayriin ah oo loo baahan yahay. Arrinka isbedbeddelaya waxa guud ahaan looga baahan yahay inuu dhexdhexaad ahaado (1% ilaa 2%). Haddi maaddada isbedbedesho ay aad u sarreyso, iskudarka caaggu wuu dhegtaagayaa, waxqabadkiisuna hoos buu u dhacayaa, halka haddii maadada kacsani ay aad u yar tahay, ay adkaan doonto in ka samaysan caaggu "uu nuugo budada".
Generally speaking, the higher the molar mass, the better the physical and mechanical properties of the vulcanized rubber, but its processability and fluidity will decline, and the speed of "powder intake" (filler mixing into raw rubber) will slow down. When processing molded compound rubber, raw rubber with a high molar mass (>600,000) ayaa guud ahaan la doortay. Si kastaba ha ahaatee, marka la samaynayo alaabta extruded, si loo hagaajiyo dheecaanka extrusion, cufka xuubka waa in uu yara hooseeyo. Baaxadda maadada vinylku waxay saameyn weyn ku leedahay waxqabadka guud ee caag isku dhafan. Waxqabadka iyo la qabsiga caag ka sameysan oo leh maadada vinyl ee 0.1% ilaa 0.2% ayaa ah kuwa ugu fiican.