Surface treatment agent for metal materials
A surface treatment agent and metal material technology, applied in metal material coating process, coating, etc., can solve the problems of poor electrical conductivity, poor scratch resistance, etc., and achieve excellent electrical conductivity and excellent storage stability.
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preparation example Construction
[0093] The preparation method of the surface treatment agent for metal materials is not specifically limited. For example, it can be produced by thoroughly mixing the separately prepared silicon compound dispersion (W), polyurethane resin as the resin compound (X), colloidal silica (Y), lubricant (Z) and water with a mixer such as a mixing mixer. .
[0094] (Surface treatment method) The surface treatment method using the above-mentioned surface treatment agent for metal materials is not particularly limited, but it is preferable to apply the above-mentioned surface treatment agent for metal materials on the surface of the metal material and heat and dry to form a film on the surface of the metal material. 2~1000mg / m in terms of Si adhesion 2 The surface treatment method of the film. The surface treatment method will be described below.
[0095] The metal material used is not particularly limited, and examples include: hot-dip galvanized steel sheet (GI), alloyed hot-dip galv...
Embodiment
[0103] Next, the effects of the present invention will be described using examples and comparative examples, but this example is only an example for describing the present invention and does not limit the present invention.
[0104] 1. How to make the test board
[0105] (1) Test material (raw material)
[0106] The following commercially available materials were used as test materials. Details of the test materials used are shown in Table 1.
[0107] [Table 1]
[0108]
[0109] (2-1) Pretreatment (washing)
[0110] As a preparation method of the test pieces A to E in Table 1, first, the surface of the above-mentioned test material was treated with Fine Cleaner 315 manufactured by Nihon Parkerizing to remove oil and stains on the surface. Next, it was washed with tap water, and after confirming that the surface of the metal material was 100% wet with water, it was further rinsed with pure water, and the water was removed in an oven at 100° C., and the resultant was used...
Embodiment 31
[0198] The result of scratch resistance (2) of Example 31 was "◯", the result of Example 32 was "⊚", and the result of Example 33 was "⊚". From these results, it was confirmed that in Examples 32 and 33 in which colloidal silica having a particle diameter of 20 nm or less and colloidal silica having a particle diameter of 50 nm or more were used, more excellent effects were obtained.
[0199] [Table 10]
[0200] Table 9
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