| Effect of plasticizer preparation on tensile adhesive Properties of silicone sealants for architectural glass curtain walls |
| Received:June 12, 2023 Revised:June 12, 2023 |
| DOI：10.12136/j.issn.1000-890X.2025.05.0372 |
| Key Words: silicone sealant；plasticizer；alkoxysilane mixture；tensile adhesive properties |
| Author Name | Affiliation | E-mail | | Cheng Yong-jie* | Guoneng Shuohuang Railway Development Co., Ltd | qqva8045@163.com |
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| Abstract: |
| The plasticizers used in silicone sealants for architectural glass curtain walls （hereinafter referred to as silicone sealeats）were prepared，and the effect of the plasticizer preparation process parameters on the tensile adhesive properties of the silicone sealants was studied.The results showed that the optimal reaction temperature of the alkoxysilane mixture for plasticizer preparation was 120 ℃，and the optimal reaction
time was 150 min，and the optima mass ratio of the high boiling point organosilicon compound to n-octanol was 1∶3.Under these conditions，the yield of the silicone sealant was 91.69%.When the mass fraction of the
alkoxysilane mixture was 5%，it was evenly dispersed in the silicone sealant matrix.Under different temperatures，with the mass fraction of the alkoxysilane mixture increased，the tensile adhesive strength of the silicone sealant decreased，the elongation at break increased，and the tensile elastic modulus first increased and then decreased.With the increase of temperature，the tensile adhesive strength，elongation at break and tensile elastic modulus of the silicone sealant first increased and then decreased. |
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