提高MS密封膠在建筑施工中的應用性能

發布時間 : 2025-12-19 11:46:59
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提高MS密封膠在建筑施工中的應用性能

發布時間 : 2025-12-19 11:46:59
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在MS密封膠基拙原料中摻入納米活性分子碳酸鈣和重鈣粉作為輔助混合料，制備建筑用MS密封膠試樣。分析MS密封膠由于KH-590和IH-792的加入各項性能指標所產生的變化，確定1%摻量硅烷偶聯劑IH-792為最佳MS密封膠制備比例。結果表明:其表干和固化時間、粘接強度和力學性能指標均表現優良。與聚硫MS密封膠和聚氨醋MS密封膠相比，MS密封膠的吸水率分別降低了43.2%和32.4%，在紫外線老化測試進行至28 d時，粘接強度分別提高了7. 93%和15.25%，拉伸強度分別提高了22. 45%和13.2% ,腐蝕面積分別減少了64%和47 %，具有較強的應用性。

建筑用MS密封膠劑在幕墻鋪設和幕墻填縫施工中應用廣泛，為了提高MS密封膠在建筑施工中的應用性能，諸多學者對此展開了研究。

利用重鈣和超細納米碳酸鈣作為輔助填料，摻人適量配比的硅烷偶聯劑KH一792制備MS密封膠，由此提升MS密封膠在土木工程建筑幕墻施工中的應用性能，使MS密封膠的表干時間、固化時間、硬度等各項性能指標都符合規范要求，有助于改善MS密封膠的耐水、耐腐蝕和耐老化能力，提高施工質量。

MS密封膠試樣制備

以3: 1比例將107基礎膠和甲基硅油加人行星混合攪拌機，高速攪拌20 min預混，于120℃將超微細碳酸鈣和重鈣烘干2h與預混料均勻混合(填料與預混料重量比為1:1)。再依次加人適量配比的催化劑、TAIL交聯劑、偶聯劑持續攪拌混合20 min，完成MS密封膠試樣地制備。

測定執行標準

(1)表干時I司:按(B/T13477.5 -2017測定;

(2)固化時間:按ASTM D 5893-2004測定;

(3)硬度:按GB/T531-2008測定;

(4)拉伸強度:按(B/T 13477.8-2002測定;

(5)粘接強度:按GB/T 13477. 10-2002測定。

(6)斷裂伸長率:按GB/T 13477.8-2002測定。http://www.kzgjfl.cn/

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