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- 發布時間 : 2023-3-14 11:06:26
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(Summary description)Customized SILICONE STRUCTURAL SEALANT from China manufacturer refers to the adhesive with high strength, can bear large load, aging resistance, fatigue resistance and corrosion resistance, and has stable performance within the expected life. It is suitable for bearing the bonding of strong structural parts. Non structural adhesive has low strength and poor durability. It can only be used for bonding, sealing and fixing of ordinary and temporary properties, and cannot be used for structural adhesive bonding. NEUTRAL SILICONE WETHERPROOF SEALANT from China manufacturer is a structural adhesive with waterproof function. Silicone glue refers to the adhesive based on silicone rubber. According to different functions, it can be divided into structural adhesive, potting adhesive, sealant, thermal conductive adhesive, flame retardant adhesive and so on.
聚氨酯密封膠密度穩定性理化力學和施工性能
(Summary description)Customized SILICONE STRUCTURAL SEALANT from China manufacturer refers to the adhesive with high strength, can bear large load, aging resistance, fatigue resistance and corrosion resistance, and has stable performance within the expected life. It is suitable for bearing the bonding of strong structural parts. Non structural adhesive has low strength and poor durability. It can only be used for bonding, sealing and fixing of ordinary and temporary properties, and cannot be used for structural adhesive bonding. NEUTRAL SILICONE WETHERPROOF SEALANT from China manufacturer is a structural adhesive with waterproof function. Silicone glue refers to the adhesive based on silicone rubber. According to different functions, it can be divided into structural adhesive, potting adhesive, sealant, thermal conductive adhesive, flame retardant adhesive and so on.
- 發布時間 : 2023-3-14 11:06:26
- Views:
本文制備了2種中空玻璃微珠填充的低密度型聚氨酯密封膠并對其進行了密度穩定性、理化、力學和施工性能研究分析。與普通型聚氨酯密封膠相比,適量中空玻璃微珠的添加顯著提高了聚氨酯密封膠的硬度、剪切強度和拉伸強度,能有效改善因聚氨酯密封膠涂膠區域飯金變形導致的膠體開裂問題。由于過量的玻璃微珠填充對膠體粘度、柔韌性和斷裂伸長率有一定影響,低密度型聚氨酯密封膠的選型需要平衡施工性能和輕量化效果,在保證車身聚氨酯密封膠涂膠密封性能的前提下,凸顯其輕量化優勢。
近年來隨著汽車科技的迅速發展和消費群體的日益擴大,人們對節能、環保的要求越來越突出,對汽車輕量化和舒適性的要求也隨之提高。車身結構由零散的飯金焊接而成,鋼板焊接的搭接部位會形成大量的焊縫和不規則的孔隙,如果這些搭接縫隙不進行密封,會造成漏風、滲水、進塵,不僅影響整車的舒適性,還會引起鋼板的銹蝕,影響車輛的使用壽命。采用輕量化技術提高車身的密封水平,不僅可以提高車身防風、防水、防塵以及抗腐蝕的能力,還可以隔音、降噪,保證乘員艙的舒適性,帶來汽車產品品質的提升。因此,汽車輕量化技術和車身密封防腐性能作為衡量整車制造質量水平的重要指標被國內外整車廠格外重視。為了保障車身的密封性能,整車廠通常采用聚氨酯密封膠作為涂裝車間的主要密封材料,對飯金搭接部位的焊縫及孔隙進行密封處理,聚氨酯密封膠涂膠區域如圖1所示。www.kubee.cn
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