CN113245163B - Paint coating and spraying preparation method thereof - Google Patents

Paint coating and spraying preparation method thereof Download PDF

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Publication number
CN113245163B
CN113245163B CN202110800832.1A CN202110800832A CN113245163B CN 113245163 B CN113245163 B CN 113245163B CN 202110800832 A CN202110800832 A CN 202110800832A CN 113245163 B CN113245163 B CN 113245163B
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China
Prior art keywords
paint
spraying
layer
paint layer
elastic particles
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CN202110800832.1A
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Chinese (zh)
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CN113245163A (en
Inventor
戴建林
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Nantong Rixu Heavy Industry Technology Co ltd
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Nantong Rixu Heavy Industry Technology Co ltd
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Priority to CN202110800832.1A priority Critical patent/CN113245163B/en
Publication of CN113245163A publication Critical patent/CN113245163A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D1/00—Processes for applying liquids or other fluent materials
    • B05D1/36—Successively applying liquids or other fluent materials, e.g. without intermediate treatment
    • B05D1/38—Successively applying liquids or other fluent materials, e.g. without intermediate treatment with intermediate treatment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D5/00—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
    • B05D7/50—Multilayers
    • B05D7/56—Three layers or more
    • B05D7/58—No clear coat specified
    • B05D7/584—No clear coat specified at least some layers being let to dry, at least partially, before applying the next layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D2502/00—Acrylic polymers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D2503/00—Polyurethanes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D2507/00—Polyolefins
    • B05D2507/01—Polyethylene
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D2518/00—Other type of polymers
    • B05D2518/10—Silicon-containing polymers

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)

Abstract

The application discloses a paint coating and a spraying preparation method thereof, which comprises the following steps: s100: spraying a piece to be sprayed with a first paint layer with elastic particles, wherein the elastic particles are positioned in the first paint layer, and the elastic particles are at least in a double-layer shape and are arranged at intervals along the thickness direction of the first paint layer; s200: and spraying the first paint layer to form a second paint layer and drying the second paint layer, wherein the elasticity of the second paint layer is greater than that of the first paint layer. According to the paint coating and the spraying preparation method thereof, the first paint layer with the elastic particles is formed by spraying the piece to be sprayed, then the second paint layer is formed by spraying the first paint layer and is dried, so that the paint coating can form at least two anti-cracking layers from inside to outside, and the risk of cracking of the paint coating due to cracking of the injection molding piece is remarkably reduced.

Description

Paint coating and spraying preparation method thereof
Technical Field
The invention relates to the technical field of spraying processes, in particular to the technical field of paint spraying, and particularly relates to a paint coating and a spraying preparation method thereof.
Background
In order to improve the surface performance and the aesthetic degree of injection-molded parts, paint is generally directly sprayed on the surfaces of the injection-molded parts through spraying equipment, and drying treatment is carried out after the paint is sprayed to form a paint coating. The injection molding piece can be a shell of the terminal equipment and the like.
However, there is a certain internal stress inside the injection molding, and the internal stress may cause a certain degree of cracking on the surface of the injection molding, and further cause cracking of the paint coating.
Disclosure of Invention
In view of the above-mentioned deficiencies or inadequacies in the prior art, it would be desirable to provide a paint coating and method of spray preparation thereof.
In a first aspect, the present application provides a method for spray preparation of a paint coating, comprising:
spraying a piece to be sprayed with a first paint layer with elastic particles, wherein the elastic particles are positioned in the first paint layer, and the elastic particles are at least in a double-layer shape and are arranged at intervals along the thickness direction of the first paint layer;
and spraying the first paint layer to form a second paint layer and drying the second paint layer, wherein the elasticity of the second paint layer is greater than that of the first paint layer.
Further, the spraying of the spraying area of the piece to be sprayed with the first paint layer having the elastic particles includes:
spraying a spraying area of a piece to be sprayed to form a first paint sublayer;
spraying elastic particles on the first paint sublayer;
spraying the first paint sub-layer sprayed with the elastic particles to form a second paint sub-layer;
spraying elastic particles on the second paint sublayer;
and spraying the second paint sub-layer sprayed with the elastic particles to form a third paint sub-layer.
Furthermore, the first paint layer is provided with a plurality of groove portions at intervals along the first direction, the second paint layer is provided with a plurality of protruding portions, the protruding portions and the groove portions are arranged in a one-to-one correspondence mode, and the protruding portions which are arranged in a corresponding mode are filled in the corresponding groove portions.
Further, the material of the elastic particles is polyethylene elastomer or rubber.
Further, the diameter of the elastic particles does not exceed 10 μm.
Furthermore, the material of the first paint layer is polyurethane.
Furthermore, the material of the second paint layer is acrylic resin or organic silicon resin.
Further, before the second paint layer is formed by spraying the first paint layer, the method further comprises the following steps:
and drying the first paint layer.
Further, still include:
and spraying the second paint layer to form a decorative layer.
In a second aspect, the present application also provides a paint coating formed by the above spray preparation method.
The application provides a paint coating and spraying preparation method thereof, through treating the first paint layer that the spraying formed the elastic particle of spraying, wherein the elastic particle is bilayer form at least and sets up along the thickness direction interval of first paint layer, then forms the second paint layer to first paint layer spraying and carry out drying process, can make paint coating from inside to outside form the anti-tortoise-cracking layer of multichannel, show to reduce paint coating because of the injection molding appear cracked risk that appears.
Drawings
Other features, objects and advantages of the present application will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, made with reference to the accompanying drawings in which:
FIG. 1 is a flow chart of a method for spray preparation of a paint coating provided by an embodiment of the present application;
fig. 2 is a schematic structural diagram of a paint coating provided in an embodiment of the present application.
Detailed Description
The present application will be described in further detail with reference to the following drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant invention and not restrictive of the invention. It should be noted that, for convenience of description, only the portions related to the present invention are shown in the drawings.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.
Referring to fig. 1, an embodiment of the present application provides a method for preparing a paint coating by spraying, including:
s100: spraying a piece to be sprayed with a first paint layer 100 with elastic particles 200, wherein the elastic particles 200 are positioned in the first paint layer 100, and the elastic particles 200 are at least in a double-layer shape and are arranged at intervals along the thickness direction of the first paint layer 100;
s200: and spraying the first paint layer 100 to form a second paint layer 300 and drying, wherein the elasticity of the second paint layer 300 is greater than that of the first paint layer 100.
In this embodiment, the first paint layer 100 with the elastic particles 200 is formed by spraying on the member to be sprayed, and the first paint layer 100 is firmly adhered to the member to be sprayed. The first paint layer 100 is provided with elastic particles 200, the material of the elastic particles 200 is different from that of the first paint layer 100, and the elastic variable of the elastic particles 200 and the crack pulling force of the injection molding piece on the first paint layer 100 when the crack of the injection molding piece is resisted by the gaps between the elastic particles 200 and the paint materials in the first paint layer 100 are utilized to form an anti-crack protective layer. The second paint layer 300 is formed by spraying the first paint layer 100, the elasticity of the second paint layer 300 is larger than that of the first paint layer 100, and the second paint layer 300 can perform secondary anti-cracking protection on some cracking pulling forces possibly transmitted by the first paint layer 100 to form another anti-cracking protection layer. Wherein, elastic particle 200 is bilayer form at least and sets up along the thickness direction interval of first paint layer 100, so set up and to make first paint layer 100 can form multichannel anti-cracking protective layer, improves the whole anti-cracking performance of first paint layer 100.
According to the paint coating and the spraying preparation method thereof provided by the embodiment, the first paint layer 100 with the elastic particles 200 is formed by spraying on the part to be sprayed, then the second paint layer 300 is formed by spraying on the first paint layer 100 and drying treatment is carried out, so that at least two anti-cracking layers are formed on the paint coating from inside to outside, and the risk of cracking of the paint coating due to cracking of the injection molded part is remarkably reduced
It should be appreciated that the first paint layer 100 will dampen most of the crack pull forces experienced, and the second paint layer 300 will experience little to no crack pull forces, so that at least the second paint side will have better integrity and improved paint coating performance.
The first paint layer 100 is made of polyurethane, and the second paint layer 300 is made of acrylic resin or organic silicon resin. Acrylic resin, organic silicon resin and polyurethane all have better adhesive property, can make the adhesive strength between paint coating and the injection molding good, avoid appearing the condition of falling the lacquer, acrylic resin and organic silicon resin's tensile properties is superior to polyurethane.
The surface treatment is carried out on the piece to be sprayed before the spraying treatment is carried out on the piece to be sprayed, so that the surface cleanliness of the piece to be sprayed is improved, and the paint spraying effect is improved.
Referring to fig. 2, in some embodiments of the present application, a first paint layer 100 having elastic particles 200 is formed by spraying on a spraying area of a member to be sprayed, including:
spraying a spraying area of a piece to be sprayed to form a first paint sublayer;
spraying the elastic particles 200 on the first paint sublayer;
spraying the first paint sub-layer sprayed with the elastic particles 200 to form a second paint sub-layer;
spraying the elastic particles 200 on the second paint sublayer;
the second paint sub-layer sprayed with the elastic particles 200 is sprayed to form a third paint sub-layer.
In the present embodiment, the method of forming the first paint layer 100 having at least bi-layered elastic particles 200 is:
spraying the elastic particles 200 on the first paint sublayer;
spraying the first paint sub-layer sprayed with the elastic particles 200 to form a second paint sub-layer;
spraying the elastic particles 200 on the second paint sublayer;
the second paint sub-layer sprayed with the elastic particles 200 is sprayed to form a third paint sub-layer.
Wherein the third paint sublayer completely covers the elastomeric particles 200 located in the second paint sublayer.
When the at least two-layer elastic particles 200 are formed, the elastic particles 200 in each layer are arranged in a mixed and staggered manner, so that the elastic particles 200 are distributed relatively evenly relative to the whole first paint layer 100, and the anti-cracking balance performance of the first paint layer 100 is improved.
The first paint sublayer, the second paint sublayer and the third paint sublayer constitute a first paint layer 100. The thicknesses of the first paint layer 100 and the second paint layer 300 can be set according to requirements, and both are, for example, but not limited to, 0.2mm or less.
In some embodiments of the present application, the first paint layer 100 is provided with a plurality of groove portions 110 at intervals along a first direction, the second paint layer 300 is provided with a plurality of protrusion portions 310, the plurality of protrusion portions 310 and the plurality of groove portions 110 are arranged in a one-to-one correspondence, and the protrusion portions 310 arranged in the correspondence are filled in the corresponding groove portions 110, such arrangement enables the elastic particles 200 located on the side wall portions of the groove portions 110 to convert the borne partial crack pulling force from the plane direction of the first paint layer 100 to the thickness direction, thereby further reducing the risk of cracks occurring on the side wall portions and the nearby areas of the groove portions 110.
The distance between two adjacent groove portions 110 and the size of the groove can be set reasonably according to the size of the spraying surface, and the application is not described here.
In some embodiments of the present application, the elastic particles 200 are made of polyethylene elastomer or rubber, and the diameter of the elastic particles 200 is not more than 10 μm, so that the elastic particles 200 have better elastic properties and can form more molecular gaps, which is helpful for improving the crack resistance of the first paint layer 100.
In some embodiments of the present application, before spraying the first paint layer 100 to form the second paint layer 300, the method further comprises: the first paint layer 100 is subjected to a drying process. So set up, can make the internal stress that forms between first paint layer 100 and the second paint layer 300 reduce, can avoid first paint layer 100 to appear the condition of splits under the stress that receives second paint layer 300.
In some embodiments of the present application, further comprising: s300: the second paint layer 300 is sprayed to form the decoration layer 400. So set up, can make the paint layer structure have better pleasing to the eye, satisfy user's individual need. The decoration layer 400 may be made of a colored finish paint.
The application also provides a paint coating which is formed by the spraying preparation method.
It will be understood that any orientation or positional relationship indicated above with respect to the terms "central," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," etc., is based on the orientation or positional relationship shown in the drawings and is for convenience in describing and simplifying the invention, and does not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and is therefore not to be considered limiting of the invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.
The above description is only a preferred embodiment of the application and is illustrative of the principles of the technology employed. It will be appreciated by a person skilled in the art that the scope of the invention as referred to in the present application is not limited to the embodiments with a specific combination of the above-mentioned features, but also covers other embodiments with any combination of the above-mentioned features or their equivalents without departing from the inventive concept. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.

Claims (9)

1. A method for preparing a paint coating by spraying is characterized by comprising the following steps:
spraying a piece to be sprayed with a first paint layer with elastic particles, wherein the elastic particles are positioned in the first paint layer, and the elastic particles are at least in a double-layer shape and are arranged at intervals along the thickness direction of the first paint layer;
it is right first paint layer spraying forms the second paint layer and carries out the stoving processing, wherein the elasticity on second paint layer is greater than the elasticity on first paint layer, wherein first paint layer is equipped with a plurality of concave part along the first direction interval, second paint layer is equipped with a plurality of bellyings, a plurality of bellyings with a plurality of concave part one-to-one sets up, and corresponds the setting the bellyings fill and correspond the concave part.
2. The spray preparation method according to claim 1, wherein the spray forming of the first paint layer having elastic particles in the spray area of the member to be sprayed comprises:
spraying a spraying area of a piece to be sprayed to form a first paint sublayer;
spraying elastic particles on the first paint sublayer;
spraying the first paint sub-layer sprayed with the elastic particles to form a second paint sub-layer;
spraying elastic particles on the second paint sublayer;
and spraying the second paint sub-layer sprayed with the elastic particles to form a third paint sub-layer.
3. The spraying preparation method of claim 1, wherein the elastic particles are made of polyethylene elastomer or rubber.
4. The spray preparation method of claim 1, wherein the elastic particles have a diameter of not more than 10 μm.
5. The spraying preparation method of claim 1, wherein the material of the first paint layer is polyurethane.
6. The spraying preparation method of claim 1, wherein the material of the second paint layer is acrylic resin or silicone resin.
7. The spray preparation method according to any one of claims 1 to 6, further comprising, before spraying the first paint layer to form the second paint layer:
and drying the first paint layer.
8. The spray coating preparation method according to claim 1, further comprising:
and spraying the second paint layer to form a decorative layer.
9. A paint coating formed by the spray preparation method of any one of claims 1 to 8.
CN202110800832.1A 2021-07-15 2021-07-15 Paint coating and spraying preparation method thereof Active CN113245163B (en)

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Application Number Priority Date Filing Date Title
CN202110800832.1A CN113245163B (en) 2021-07-15 2021-07-15 Paint coating and spraying preparation method thereof

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Application Number Priority Date Filing Date Title
CN202110800832.1A CN113245163B (en) 2021-07-15 2021-07-15 Paint coating and spraying preparation method thereof

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CN113245163A CN113245163A (en) 2021-08-13
CN113245163B true CN113245163B (en) 2021-09-14

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Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108342945A (en) * 2017-01-22 2018-07-31 马明 A kind of preparation method of elastic polyurethane bottom acrylic acid moving surface layer

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108342945A (en) * 2017-01-22 2018-07-31 马明 A kind of preparation method of elastic polyurethane bottom acrylic acid moving surface layer

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