Self-adhesiveroofingfeltsareanincreasinglypopularchoiceintheroofingindustryduetotheireaseofapplicationandimprovedsafetystandards.Thecompositionandformulationsofthesematerialsarecrucialtotheirperformanceanddurability.
Premiumself-adhesiveroofingcompoundsgenerallyconsistofbitumen/asphalt,amixtureofSBSandSISblockcopolymers,SBdi-blockpolymer,tackifyingresin,naphthenicoil,oxidisedbitumen,andfiller.Thespecificmixoftheseingredientsisdeterminedbytherequirementsforthefinalproduct,withthetypeofbitumenorasphaltplayingasignificantrole.
Inadditiontohigh-temperatureperformance,self-adhesivecompoundsmustmaintaintackinessatlowtemperatures.Thisnecessitatescomplexformulationsthatbalancerheology,adhesivestrength,andcohesivestrength.Recentdevelopmentshavefocusedonsimplifyingtheseformulationstoeasemanufacturingprocesses.
Experimentalisoprene-andbutadiene-basedblockcopolymersarebeingdevelopedassinglepolymerstomeetthevariousrequirementsofself-adhesiveroofingfelts,enhancingtheiroverallperformanceandreliability.