Preparation of novel chemical milling protective coating
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A technology for chemical milling and protective coatings, applied in the direction of coatings, etc., can solve the problems of fading of coatings and low heat resistance of protective coatings, and achieve the effect of ensuring tensile strength and improving heat resistance.
Inactive Publication Date: 2011-04-13
中昊北方涂料工业研究设计院有限公司
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[0008] The technical points of the present invention: mainly use the mixed thermoplastic elastomer as the matrix material, completely abandon the traditional rubber material, and at the same time improve the defects that the protective coating prepared by using SBS is not high in heat resistance and the coating is slightly faded after chemical milling; auxiliary The base resin, tung aldehyde resin, provides good resemblance and etching ratio of the coating film; methyl silicone oil provides good peelability of the coating film; plasticizer white oil provides good plastic...
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Embodiment 1
[0037] Embodiment 1: This embodiment demonstrates the preparation method of the novel chemical milling protective coating of the present invention.
[0038] (1) Add 15g of mixed thermoplastic elastomer into the tank, add 85g of mixed solvent (tetrachloroethylene:xylene=7:3) and stir under high-speed stirring for about 1 to 2 hours until it dissolves and becomes transparent to obtain 15% of hybrid thermoplastic elastomers.
[0039] (2) Add 25g tung oil and 25g pure phenolic resin in the reaction kettle, keep it at 140°C for 1 hour, then add 50g dimethylbenzene to obtain 50% tungaldehyde resin after cooling down.
[0040] (3) 100g 15% mixed thermoplastic elastomer, 12g 50% tung aldehyde resin, methyl silicone oil 1g, white oil 5g, fumed silica 3g, kaolin 6g, precipitated barium sulfate 3g, titanium cobalt green 0.1g, BYK-060N0. 4g, 50g of tetrachlorethylene, and 20g of toluene are all mixed into a mixture, and the mixture is further ground and dispersed with a grinding equipmen...
Embodiment 3
[0043] 1 Hybrid thermoplastic elastomer 16.8 15
[0044] 2 50% tung aldehyde resin 12.0 12
[0045] 3 Methicone 1.0 1.4
[0046] 4 white oil 6.0 5.0
[0047] 5 Fumed silica 5.0 6.0
[0048] 6 Kaolin 6.0 6.0
[0049]7 Precipitated barium sulfate 3.0 4.0
[0050] 8 Titanium cobalt green 0.1 0.1
[0051] 9 BYK-060N 0.5 0.6
[0052] 10 Tetrachloroethylene 105 105
[0053] 11 Toluene 20 20
[0054] 12 Xylene 25 25
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Abstract
The invention discloses a novel chemical milling protective coating, which is a single-component coating comprising a thermoplastic elastomer, a pigment, a filler, an aid, a solvent and the like. The coating can be dried at normal temperature and also can be dried at a low temperature; and a film is level and uniform, and has a certain adhesive force and better physical and mechanical properties. Meanwhile, the coating has high chemical corrosion resistance and peeling performance, is mainly used for chemical milling of an aluminum alloy, a titanium alloy, stainless steel and the like, processing of high-hardness metals, anodizing of the aluminum alloy, electroplating, etching processing temporary protection of artistic products with complex technology and the like, and also can be used for chemical corrosion-resistant shielded protection of coated object surfaces or used as temporary protection coatings for preventing scratches and bruises on surfaces of instruments and mechanical equipment.
Description
technical field [0001] The invention relates to a temporary protection mainly used for chemical milling of aluminum alloys, titanium alloys, stainless steel, etc., processing of high-hardness metals, anodization of aluminum alloys, electroplating, and engraving of artworks with complicated processes. It can be used as a masking protection against chemical corrosion on the surface to be coated, or as a temporary protective coating on the surface of instruments and mechanical equipment to prevent scratches and scratches. [0002] The paint can be dried at normal temperature or at low temperature; the paint film is flat and uniform, has certain adhesion and good physical and mechanical properties. At the same time, the coating has good chemical corrosion resistance and strippability. Background technique [0003] Chemical milling protective coating, also known as strippable coating, is a temporary protective coating in the process of chemical milling, which plays a temporary p...
Claims
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