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厚型防火涂料介绍及施工涂抹说明 | 2012-6-25 9:43:00

厚型防火涂料介绍及施工涂抹说明

    厚型防火涂料分为NH-2室内和WH-1室外厚型钢结构防火涂料、XZ-SD隧道防火涂料,其主要原材料采用多孔型隔热材料与无机绝热材料组成。该材料无毒不燃,不含有石棉成分;具有重量轻、干燥快、耐潮湿、耐冻融、耐腐蚀、耐酸碱,隔热性好、抗老化等优良的理化性能。  
    厚型防火涂料适用于超高层钢结构建筑、大跨度钢结构厂房、隧道工程、石油化工工程,也适用于民用建筑和一般工业厂房的屋面和墙面的吸声、保温等;由于该涂料内含有抗裂性纤维,在实际工程应用中,可改善一般涂料早期产生硬化的弊病,从而提高涂料的耐火性、抗冲击性、抗裂性等。是一种新型的耐火等级较高的防火涂料。  
    施工说明:   
    一、施工工序:    
    1、构件表面处理:应去除油污、浮灰,钢构件应除锈、去水,保持构件洁净。  
    2、施工机具:空压机(气压为4个大气压),喷枪(枪口直径为8~10m)和低速搅拌机及手工涂抹工具。  
    3、表面打底:在涂抹厚型涂料前必须用打底料打底,打底料配制比例为专用黏结剂:厚型涂料:水=0.8:3:2.5,采用低速搅拌机搅拌,首先将水和黏结剂进行搅拌,搅拌时间为2~3分钟左右;再放入厚型涂料,搅拌5~10分钟,时间不得过长,稠度控制在8~12cm范围内(用水量可适当调节,以适应喷涂)。打底料采用手提式喷枪,喷涂厚度为1~1.5mm,底层基本均匀即可。一次搅拌的混合料宜在2小时内用完,待12~24小时(其完全凝固硬化后)方可进行下一道手工涂抹。  
    4、手工涂抹:手工涂抹料的配制比例为水:厚型涂料=1:1左右,采用低速搅拌机,搅拌时间为5~10分钟,不得过长,拌匀即可(以适宜涂抹为准)。根据防火等级要求,每次涂抹厚度应控制在1cm以内;两次涂抹间隔时间为24小时,不宜过长也不宜过短。每次搅拌的混合料宜在2小时内用完。  
    5、夏季高温或涂抹间隔时间过长,应进行喷水保养,以防涂层因失水引起涂层开裂、起层及粉化。  
    二、包装一经打开,应及时使用,若发现涂料受潮、结块,不得使用。  
    三、涂层硬化后外观为灰白色,涂层干燥后,表面可以涂刷建筑涂料装饰。

Re:在漫画中识别身边的违章 | 2017-2-18 16:00:33
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Re:在漫画中识别身边的违章 | 2016-10-21 15:17:59
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Re:在漫画中识别身边的违章 | 2016-10-21 13:27:46
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Re:在漫画中识别身边的违章 | 2016-10-20 2:33:36
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Re:在漫画中识别身边的违章 | 2016-10-17 3:23:43
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Re:在漫画中识别身边的违章 | 2016-10-15 16:00:59
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Re:在漫画中识别身边的违章 | 2016-10-14 3:53:45
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Re:在漫画中识别身边的违章 | 2016-10-13 17:56:13
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原创 | 2016-9-30 15:46:11
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原创 | 2016-9-28 21:03:20
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原创 | 2016-9-6 21:29:03
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