丁基防水嵌缝胶底涂的选择试验

发布时间 : 2026-2-9 12:44:22
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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.

丁基防水嵌缝胶底涂的选择试验

(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.

发布时间 : 2026-2-9 12:44:22
Views:

底涂使用过程中，基面的特性决定了底涂的基本类别，但还需考虑其他各方面的因素与条件，力求选用最合适的底涂。

分类

目前在工程中应用比较广泛的底涂为反应型底涂，其中最常见的是界面处理剂类、高渗透基面加强类、环氧类。这三类底涂的主要特性见表。

三类底涂在不同类型基体上应用的选择试验

从上述三类底涂中各选一种代表性的产品，并在不同类型的基体上施工，最后检测其性能并评价适性。

材料:界面处理剂类(国外某公司的primer-A );高渗透基面加强类(国内某公司的primer-B );环氧类(国内某公司的primer-C )。丁基防水嵌缝胶(某国内知名品牌单组分聚氨醋丁基防水嵌缝胶PI某国外知名品牌单组分聚氨酉旨丁基防水嵌缝胶S)。

将以上三种底涂分别涂刷在密实坚固、多孔坚固、密实疏松型的水泥条上(12 mmx 12 mmx70 mm )底涂固化后分别用单组分聚氨醋丁基防水嵌缝胶P和单组分聚氨酌丁基防水嵌缝胶S制作成粘l2mmx12mmx50 mm )，进行浸水定伸粘结测试和冷拉热压测试。

浸水定伸枯结测试方法

浸水定伸粘结测试的过程如下:1)将制备好的试件于标准试验条件下放置28 d;2)将试件放入(23士2)℃蒸馏水中浸泡4d，接着再将试件于标准试验条件下放置1 d;3)将试件装入拉力机夹具内，以5-6mm/mi。的拉伸速度将试件拉伸至原宽度的100%.然后用相应定位垫块插人已拉伸至规定宽度的试件中并保持24 h;4)试验结束后，用精度为0.5 mm的量具测量每个试件粘结或内聚破坏深度00冷拉热压测试过程。

冷拉热压测试方法如下:1)将制备好的试件于标准试验条件下放置28 d;2)将试件装人拉力机夹具内，拉伸和压缩速度为5"6 mm/min，拉伸压缩幅度为士25%。

第1周:第1天将试件放人(-2012)℃的低温箱内，3h后在试验机上相同温度下拉伸试件至要求宽度，并在(-2012)℃下保持拉伸状态21 h;第2天解除拉伸，将试件放入(70土2)℃的干燥箱内，3h后在试验机上相同温度下压缩试件至要求宽度，并在(7012)℃下保持拉伸状态21h;第3天解除压缩，重复第1天步骤;第4天同第2天步骤;第5-7天解除压缩，试件在不受力状态与标准试验条件下放置。

第2周:重复第1周的步骤。

试验结束后，用精度为0.5 mm的量具测量每个试件粘结或内聚破坏深度。http://www.sdyuantai.com/

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