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as people pay attentions to the environment the water-based coating becomes more and more popular.the satisfied effect can be reached with the proper construction plan.the article talks about the composition of the paint and the preparation for the raw material, pigment, organic solvent, base material, additive and device.
before the construction mix the two-component water-based paint according to certain proportion. the proportion is decided by the chemical equivalent f crosslinking reaction. the base material and crosslinking agent should be stored separately.
construction process:
a) prepare two-component water-based coating. add water as needed.
b) use at least one high speed rotating atomizer with the linear velocity of 10000^25000m/min.
c) put the atomized premix on the substrate.
the premix is refered to the mixture of water-based multi-compenent coating. when it comes to the the rotating atomizer the even degree is low. it is refered to the mixture before it comes to the rotating atomizer.
the static high speed rotating atomizer is prefered. when in the static way the paint with electricity or with indirect electricity are both available. one or several coats of the paint can be applied to the substrate, such as car or parts. the paint can be sprayed by automatic control machine or the painting robot.
the high speed rotating atomizer is made of metal, such as aluminum, titanium or exquisite steel. the diameter of the rotating cup is 5^12cm.
the scale of linear spead is 10000^25000m/min. it means that the diameter of the rotating cup is 6.5cm. the scale of the linear spead is 5000^120000 rpm. the smaller the diameter is the faster the linear spead is. with higher spead the effect of the film will be better.
the thickness of the dry film of water-based multi-component base coat is 10^50?m. the thickness is decided by the hue. the thickness fo the dry film of the water-based water-based multi-component topcoat is 30^60?m. the paint can b78????y f } ~ /
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in the field of auto making the water-based multi-component base coat has been applied to the surface of the car. the better way of painting is wet-on-wet way. the varnish is painted on the coat of water-based base coat. the thickness of the film is 30^60?m. the varnish is heated in the temperature of 60^160!.
water-based multi-component coating is mainly applied to the multi-film varnish. for example flash dry the water-based varnish film. the temperature is 20^
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keep the water-based multi-component paint separately in the following ways: (a) at least on water-based component and at least non-water-based component;(b) at least two water-based component without non-water-based component; (c) at least two water-based component,water and non- water-based component.in system (a) and system(b) water must be added in the preparation process to reach the adhesion and solid content. in system (a) and system(b) water is not the component.
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