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钢结构油漆涂层附着力的测试方法之划圈法测定附着力

发布时间:2016-9-21 10:31:07 浏览次数:535
钢结构油漆涂层附着力的测试方法之划圈法测定附着力

 

 

圆法所采用的粘着试验机,是根据钢结构的划痕面积来评定漆膜的完整性。根据编制的镀锡板固定在测量仪器,保证膜切开,增加的重量,按顺时针方向的80-100r/min均匀摇动摇柄,对轧线划痕,标准圆长7.5cm,取出样品,评级。在实验中需要注意以下几点:

(1)针必须保持锋利,或不能区分1和2,分别应在手指触摸感的测定是尖锐的,或在确定的一些块测试板,适当的。

 

钢结构油漆涂层附着力的测试方法之划圈法测定附着力

 


(2)试着描述几圈,划痕应该只是通过胶片切割,如果不暴露地板,增加重量;但不要增加太多,这样就不会增加耐磨性,针。

 

钢结构油漆涂层附着力的测试方法之划圈法测定附着力

 


(3)评级可以等级7(最内部)进行评估,也可以等级1(外环)评级,根据电影完整序列检查部分的程度,如网格的一部分有705多个完整,是该站点是好的,还是那个坏的。例如,网站的1个完整的膜,最好的附着力,为1,1个部分的膜损伤和位置的2个完整的,附着力为2。基于类推,最严重的7个层次的附着力。通常需要良好的附着力的底漆应达到1级,面漆的附着力在2左右。

 

 

The adhesion tester adopted by the circle method is to assess the integrity of the paint film according to the scratch area of the steel structure. According to the prepared tin plate is fixed on the measuring instrument, to ensure that the film cut through, added weight, in a clockwise direction, the 80-100r/min uniform rocking the rocking handle, to the roll line scratches, standard circle length 7.5cm, take out the samples, rating. The following points need to be noticed in the experiment:


(a) the needle must be kept sharp, or can not distinguish between 1 and 2, respectively, should be before the determination of the finger touch feeling is sharp, or in the determination of a number of block test board, as appropriate.


(b) try to describe a few laps, scratches should just cut through the film, if not exposed floor, added weight; but don't add too much, so as not to increase the wear resistance, needle.


(c) rating can level 7 (innermost) to assess, can also level 1 (the outer ring) rating, according to the degree of the film complete sequence check parts, such as a part of the grid has more than 705 intact, is that the site is good, or that bad. For example, the site of 1 film intact, the best adhesion, as 1, 1 parts of the film damage and the location of 2 intact, the adhesion was 2. Based on analogy, the 7 level of the worst adhesion. Usually requires good adhesion primer should reach the 1 level, topcoat adhesion in about 2.

 

 

 

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