Primer surfacer for automobiles, preparation method and application thereof
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A painting and automotive technology, applied in coatings, anti-corrosion coatings, polyester coatings, etc., can solve problems such as increasing painting costs and high energy consumption
Active Publication Date: 2020-01-10
HUNAN BANFERT NEW MATERIALS TECH
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Problems solved by technology
However, the existing 3C1B coating process is a high-temperature baking process, which still has the disadvantage of high energy consumption
At the same time, high-temperature baking determines that the body and exterior parts such as bumpers must be painted separately, which also greatly increases the cost of painting
Method used
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Embodiment 1
[0049] A primer for automobiles, including A-component and B-component (curing agent). A component includes the following raw materials: water-based polyurethane dispersion, polyester resin, acrylic modified polyurethane, acrylic emulsion, acrylic resin, titanium dioxide, dispersion aid, wetting and leveling agent, defoamer, organic amine, film-forming aid agent, compatibilizer, deionized water (the parts by weight of each component are shown in formula 1 in the following table 1).
[0050] Table 1: The composition ratio of the A component of the intermediate coating paint in Examples 1-8 and Comparative Examples 1-2
[0051]
[0052] In the above table, TW-008, TW-401, TW201, and TW-103 are all water-based resin products produced by Hunan Bonforte New Material Technology Co., Ltd., and their specific indicators are shown in Table 2 below (the same below).
[0053] Among them, TW-008 is an aliphatic polyurethane polyol resin with a molecular weight Mn of 5000 and a polydis...
Embodiment 2
[0069] A kind of intermediate paint that is used for automobile, its composition and preparation method are identical with embodiment 1.
[0070]A kind of finish paint that is used for automobile, finish paint is divided into two layers of white surface and pearly finish, the formula of C component in the formula of white face and pearly finish two-layer finish coat and the weight parts of each formula are respectively as formula 2, in table 3 Recipe 3 is shown. For its preparation method, refer to the preparation method of component C of the topcoat in Example 1.
Embodiment 3
[0072] A kind of intermediate paint that is used for automobile, its composition and preparation method are identical with embodiment 1, but the composition of A component is formula 2 in table 1.
[0073] A kind of finish paint that is used for automobile, its composition and preparation method are identical with embodiment 1.
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Abstract
The invention discloses a primer surfacer for automobiles. The primer surfacer comprises a component A and a component B. The component A comprises the following raw materials by weight: 10-20 parts of a waterborne polyurethane dispersion, 12-23 parts of polyester resin, 5-15 parts of acrylic modified polyurethane, 2-8 parts of an acrylic emulsion, 5-8 parts of acrylic resin, etc.; and the component B is a curing agent, and the weight ratio of the component A to the component B is (6-10):1. The invention also provides a preparation method and application of the primer surfacer. The primer surfacer disclosed by the invention has the characteristics that the primer surface can meet wet-to-wet construction process and the coating film can be baked and cured at a low temperature (60-100DEG C),and also has excellent adhesive force, stone impact resistance, wear resistance, chemical resistance and other physical and chemical properties while having good construction performance and coatingfilm appearance.
Description
technical field [0001] The invention belongs to the field of coatings, and in particular relates to a primer, a preparation method and an application thereof. Background technique [0002] At present, the development of new industry trends such as environmental protection, lightweight, new energy, and intelligence has triggered a new round of technological changes in the automotive industry, and has also put forward new requirements and challenges for the entire supply chain including coatings. In recent years, with the gradual strengthening of environmental protection requirements and the continuous introduction of national environmental protection regulations, water-based coatings with low VOC emissions have become the development trend of automotive coatings in the future. At the same time, simplifying the coating process to reduce energy consumption and cost in the coating process has also become a trend. The focus of attention of all parties. [0003] Now, as an enviro...
Claims
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Application Information
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