Multifunctional paint suitable for battery box and preparation method and application of multifunctional paint

Abstract

The invention discloses multifunctional paint suitable for a battery box and a preparation method and application of the multifunctional paint. The multifunctional paint is prepared from graphene, water-base resin, a dispersing agent, a thickening agent, a cross-linking agent and water, and further optionally comprises one of or a combination of a flatting agent, a pH adjuster, an anti-wear agent,a flame retardant and an antifoaming agent; the water-base resin is composed of waterborne polyurethane resin and waterborne acrylic resin of which the feed mass ratio is (11:10)-(9:5), the thickening agent is a polyacrylic ester thickening agent DN-2222, and the cross-linking agent is a modified polycarbodiimide cross-linking agent XR-5580. The preparation method comprises the step that it is only needed that raw materials are mixed through a certain feeding mode. The invention provides the application of the paint in a coating of the outer surface of a battery box of a new energy electric vehicle. The paint can have excellent adhesion, alkali resistance, wear resistance, salt spray resistance, viscosity and other physical and mechanical properties while having an efficient heat dissipation function, and the efficient heat dissipation cannot be affected by the external environment.

Description

technical field [0001] The invention belongs to the field of coatings for new energy vehicles, in particular to coatings for battery boxes of new energy vehicles, in particular to a multifunctional coating suitable for battery boxes and its preparation method and application. Background technique [0002] In order to protect the environment, save energy and protect the environment, and promote green energy, one of the ways to protect the environment is to expand the use of electric vehicles and reduce the use of fuel-efficient vehicles. However, electric vehicles have been in a downturn now, restricting The main factor in the development of electric vehicles is the service life of new energy power batteries. In response to this problem, most of the battery boxes currently used to store new energy batteries are equipped with cooling holes, but due to the opening of the cooling holes, rainwater can easily enter the inside of the battery box when it rains, short-circuiting the ...

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Problems solved by technology

This patent forms a layer of elastic protective film on the outer surface of the box, which can quickly rebound and return to its original shape after being hit. Therefore, after spraying this protective coating on the box, it can protect the battery box well. However, this patent It also cannot improve the heat dissipation performance that restricts the service life of the battery box, and the anti-corrosion and fire prevention effect is poor. In addition, the alkali resistance is unknown, and the adhesion is relatively poor.

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