Neutral Silicone Sealant Composition

Qhov nruab nrab silicone sealants feem ntau yog tsim los ntawm silicone polymers, fillers, crosslinkers, thiab catalysts. Silicone polymers suav nrog cov khoom loj tshaj plaws, kwv yees li 70% -80%, muab cov khoom sib khi thiab kev sib txuas ua ke. Fillers xws li calcium carbonate thiab silica pab kwv yees li 10% -20% los txhim kho lub sealant lub zog txhua yam thiab txo cov nqi. Crosslinkers thiab catalysts yog lub luag haujlwm rau lub sealant txoj kev kho, nrog cov ntsiab lus ntawm kwv yees li 1% -5% thiab 0.1% -1%, feem. Shin-Etsu nruab nrab silicone sealant muaj nyob rau hauv peb lub khw muaj qhov kub thiab txias tsis kam (-50℃rau 250 degree) thiab kho tag nrho tom qab 24 teev ntawm chav tsev kub. Nws muaj qhov nyuaj ntawm 50 Shore A thiab lub zog shear ntawm 1.3 MPa, ua rau nws tsim nyog rau kev ruaj ntseg cov khoom siv hluav taws xob thiab muab cov dej tsis sib khi.