Water-based paint applied in aluminum-plastic plates and color steel coiled material
A water-based paint and pigment technology, applied in the paint field, can solve the problems of increasing respiratory diseases, reproductive system diseases, failing to meet the process requirements, poor paint effect, etc., achieving excellent solvent resistance (xylene) and not affecting production Efficiency, the effect of good marketing value
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[0022] The preparation method of nano fumed silica slurry is to add 5 parts of aqueous dispersant and 2 parts of aqueous wetting agent to 100 parts of ethanol and stir until uniform, then add 20 parts of fumed silica and stir until uniform, soak for 24 hours and then grind Finish the preparation to a fineness of 2μm
[0023] The properties of the components used in the present invention are described as follows:
[0024] Water-soluble acrylic resin: an acrylic resin that contains enough polar groups or ions in the main chain or side chain to be soluble in water; mainly includes poly(meth)acrylic acid, poly(meth)acrylamide and some N-substituted poly(meth)acrylamide, poly(meth)acrylate, etc.; used in the embodiment of the present invention, purchased from Tianjin Ziming Chemical Co., Ltd., and the product model is 503.
[0025] Water-soluble amino resin: It is an amino resin that is soluble in water. The amino resin used in the embodiment of the present invention was purchased from T...
Example Embodiment
[0041] Example 1 White paint used for surface coating of aluminum composite panel
[0042] First, the adhesion promoter is prepared, and the preparation method is as follows:
[0043] 1) Take 100g of branched polyester resin and 5g of N,N-dimethylethanolamine and mix and stir; the stirring time is 20min;
[0044] 2) Then 50g of N-methylpyrrolidone and 5g of 3-(2,3-epoxypropoxy)propyltrimethoxysilane are mixed and stirred; the same is stirred for 20min;
[0045] 3) Raise the temperature of the mixed solution prepared in step 1) to 95°C, and then add dropwise the solution prepared in step 2) (add it within 10-15 minutes), stir and react for 30 minutes, and then cool to 40 after the reaction is complete After temperature, 1g of N,N-dimethylacetamide was added, and the preparation was completed after stirring for 20 minutes.
[0046] To prepare nano fumed silica slurry, add 5 g of aqueous dispersant and 2 g of aqueous wetting agent to 100 ml of ethanol (1 ml of ethanol and water are used a...
Example Embodiment
[0051] Example 2 Silver paint used for surface coating of aluminum composite panel
[0052] Silver paint for surface coating of aluminum-plastic panels, the distribution ratio of each group (by weight):
[0053]
[0054] The adhesion promoter and the nano fumed silica slurry are prepared by the method described in Example 1, but the amount of the components can be adjusted within the scope of the description of the invention.
[0055] When formulating the paint, add water-soluble acrylic resin, water-soluble amino resin, water-based polyurethane resin, water-based leveling agent, water-based dispersant, adhesion promoter, and water-based defoamer into a clean container in sequence, stir evenly, and filter (Filter with 800 mesh filter) for use; then mix and stir with nano fumed silica slurry for 30 minutes, then add aluminum slurry and water and stir evenly to obtain a finished water-based paint. In order to have a better effect during use, the product needs to be filtered (select 60...
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