Lighted ornament and method of manufacturing the same

Abstract

The application discloses a luminous decoration and a manufacturing method thereof, and relates to the technical field of surface decoration. The luminous decoration comprises a base layer and a luminous layer which is reaction injection molded on the base layer, and the luminous layer comprises the following substances by weight: 1-30 parts of a luminous material, and 100 parts of paint; wherein the paint is polymerized by an A component containing active hydrogen and a B component containing isocyanate groups. The luminous decoration disclosed by the application has simple manufacturing process, small environmental pollution, and can realize the light and thin structure of the product.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of surface decoration, in particular to a light-emitting decoration piece and a manufacturing method thereof. BACKGROUND

[0002] Automobile interiors and exteriors such as decorative strips, door panels, interior panels, roof linings, etc. often use light-emitting decoration pieces to improve the aesthetic and interesting nature of the decoration.

[0003] In related technologies, there are mainly two ways to realize light-emitting decoration pieces. The first way is to set a light strip or light source inside the structure of the decoration piece, so that it emits light after being powered on. The second way is to spray a light-emitting substance on the surface of the decoration piece to form a light-emitting film layer.

[0004] However, the first way results in a large overall thickness of the light-emitting decoration piece, has a high requirement for the layout space, and is limited in use scenarios. The second way needs to add a light-emitting substance to the paint for multiple rounds of spraying, which is complicated and high in cost, and is prone to environmental pollution. SUMMARY

[0005] Therefore, the present application provides a light-emitting decoration piece and a manufacturing method thereof, which are simple in manufacturing process, can realize the lightness and thinness of the product structure, and can reduce pollution to the environment.

[0006] The first aspect of the present application provides a light-emitting decoration piece, comprising a base layer and a light-emitting layer reaction injection molded on the base layer, the light-emitting layer comprising the following components by weight: 1-30 parts by weight of a light-emitting material, 100 parts by weight of a paint.

[0007] The paint comprises an A component containing active hydrogen and a B component containing an isocyanate group.

[0008] Optionally, the light-emitting material is a light-emitting liquid, and the light-emitting layer comprises the following components by weight: 3-15 parts by weight of a light-emitting liquid, 100 parts by weight of a paint.

[0009] Optionally, the light-emitting material is a solid light-emitting particle, and the light-emitting layer comprises the following components by weight: 4-13 parts by weight of a light-emitting particle, 100 parts by weight of a paint.

[0010] Optionally, the particle size of the light-emitting particle is 0.05-100 μm.

[0011] Optionally, the thickness of the base layer is 1-4 mm, and the thickness of the light-emitting layer is 0.3-4 mm.

[0012] Optionally, the A component is selected from at least one of an alcohol containing the active hydrogen group and a derivative thereof, an ether containing the active hydrogen group and a derivative thereof, and an amine containing the active hydrogen group and a derivative thereof; and / or,

[0013] The B component is a monomer or an oligomer containing the isocyanate group.

[0014] Optionally, the weight ratio of the A component to the B component is 1:(0.5-5).

[0015] Optionally, the surface of the substrate layer close to the light-emitting layer has a weak polar group or no polar group.

[0016] The light-emitting decoration further comprises a linking layer between the substrate layer and the light-emitting layer, for improving the adhesion between the substrate layer and the light-emitting layer.

[0017] Optionally, the linking layer is obtained by surface treatment on the surface of the substrate layer close to the light-emitting layer, and the surface treatment includes at least one of surface treatment agent treatment, flame treatment, and corona treatment.

[0018] The second aspect of the embodiments of the present application provides a manufacturing method of a light-emitting decoration, for manufacturing the light-emitting decoration of the first aspect, and the manufacturing method comprises the following steps:

[0019] forming a substrate layer;

[0020] According to the weight parts of each component in the light-emitting layer, a light-emitting material is mixed into an A component containing active hydrogen and a B component containing an isocyanate group, and after uniform stirring, the light-emitting material is extruded onto the substrate layer for reaction injection molding.

[0021] The light-emitting decoration provided by the embodiments of the present application comprises a substrate layer and a light-emitting layer arranged in layers, wherein the light-emitting layer comprises 1-30 parts by weight of a light-emitting material and 100 parts by weight of a paint, the paint comprises an A component containing active hydrogen and a B component containing an isocyanate group, and the light-emitting layer is obtained by reaction injection molding of the light-emitting material, the A component and the B component on the substrate layer. Therefore, the light-emitting decoration provided by the embodiments of the present application has a simple structure, a simple product forming process, is easy to realize automation, the product is formed in a mold through a reaction injection molding process, the thickness can be flexibly designed according to requirements, which is conducive to realizing the lightness and thinness of the product, and the product does not need a spraying process, which can reduce environmental pollution. BRIEF DESCRIPTION OF DRAWINGS

[0022] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the film structure of a light-emitting decorative component provided in an embodiment of this application;

[0024] Figure 2 This is a schematic diagram of the film structure of another luminescent decorative element provided in an embodiment of this application;

[0025] Figure 3 This is a flowchart of the manufacturing method provided in the embodiments of this application.

[0026] Figure label:

[0027] 1. Substrate layer; 2. Light-emitting layer; 3. Connecting layer.

[0028] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0029] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0030] In the description of this application, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0031] Furthermore, the technical features involved in the different embodiments of this application described below can be combined with each other as long as they do not conflict with each other.

[0032] This application provides a light-emitting decorative component, such as... Figure 1 As shown, the luminescent decorative component includes a substrate layer 1 and a luminescent layer 2 formed by reaction injection molding on the substrate layer. The luminescent layer 2 includes the following components in parts by weight: 1 to 30 parts by weight of luminescent material and 100 parts by weight of paint; wherein the paint is polymerized from component A containing active hydrogen and component B containing isocyanate groups.

[0033] Exemplarily, the weight parts of the light-emitting material include, but are not limited to, the following: 1 weight part, 3 weight parts, 4 weight parts, 6 weight parts, 7 weight parts, 9 weight parts, 11 weight parts, 13 weight parts, 15 weight parts, 17 weight parts, 20 weight parts, 23 weight parts, 25 weight parts, 27 weight parts, 29 weight parts, 30 weight parts, and the like.

[0034] The light-emitting decorative part provided in the embodiments of the present application includes two structural layers, i.e., a base layer 1 and a light-emitting layer 2, and the structure is relatively simple; the light-emitting layer 2 is directly formed on the base layer 1 through a reaction injection molding process, the product forming process is simple and easy to realize automation, which helps to improve the production and manufacturing efficiency; moreover, the product is formed in a mold through a reaction injection molding process, and the forming thickness can be flexibly designed according to requirements, which is beneficial to realize the lightness and thinness of the product; compared with the structural part sprayed with a light-emitting substance in the related art, the light-emitting structural part provided in the embodiments of the present application does not need a spraying process, and the environmental pollution can be reduced.

[0035] In the embodiments of the present application, the light-emitting material refers to a substance material capable of absorbing energy in a certain way and converting it into light radiation. For example, the light-emitting material can be various light-emitting or phosphorescent materials, which can be in a solid state or a liquid state. In actual application, it generally emits light under external excitation, and the external excitation conditions can be light stimulation, force stimulation, temperature stimulation, humidity stimulation, and the like.

[0036] In some embodiments of the present application, the light-emitting material can be a light-emitting liquid, and the light-emitting layer 2 includes the following weight parts of components: 1-30 weight parts of light-emitting liquid and 100 weight parts of paint.

[0037] Optionally, the light-emitting layer 2 includes the following weight parts of components: 3-15 weight parts of light-emitting liquid and 100 weight parts of paint.

[0038] Exemplarily, the light-emitting liquid can be a liquid containing one or more photosensitive substances such as fluorescent dyes, fluorescent microcapsules, or can also be a liquid light-emitting material such as a tetraphenyl ethylene derivative, a rare earth ion liquid, and the like.

[0039] When the light-emitting layer is formed by reaction injection molding, if the light-emitting material is a light-emitting liquid, the light-emitting liquid can be directly mixed with the A component and the B component of the paint for use.

[0040] In other embodiments of the present application, the light-emitting material can also be a solid light-emitting particle, and the light-emitting layer 2 includes the following weight parts of components: 1-25 weight parts of light-emitting particle and 100 weight parts of paint.

[0041] Optionally, the light-emitting layer 2 includes the following weight parts of components: 4-13 weight parts of light-emitting particle and 100 weight parts of paint.

[0042] Exemplarily, the light-emitting particles can be fluorescent particles, phosphorescent particles, rare earth resin particles, etc.

[0043] When the reaction injection molding light-emitting layer, if the light-emitting material is a solid light-emitting particles, in order to ensure the appearance quality of the prepared light-emitting layer surface, need to select the appropriate particle size of light-emitting particles and paint mixed.

[0044] In some embodiments of the present application, the particle size of the light-emitting particles is 0.05-100 μm.

[0045] Exemplarily, the particle size of the light-emitting particles can be 0.05 μm, 0.1 μm, 1 μm, 10 μm, 20 μm, 30 μm, 40 μm, 50 μm, 60 μm, 70 μm, 80 μm, 90 μm, 100 μm, etc.

[0046] Generally, the smaller the particle size of the light-emitting particles, the smoother the surface, the better the appearance quality. Therefore, the particle size of the light-emitting particles can be 0.05-50 μm, such as 0.05 μm, 0.1 μm, 0.5 μm, 1 μm, 5 μm, 10 μm, 15 μm, 20 μm, 25 μm, 30 μm, 35 μm, 40 μm, 45 μm, 50 μm, etc.

[0047] However, the particle size of the light-emitting particles is too small, which may affect the light-emitting effect of the light-emitting layer. In some embodiments of the present application, when the particle size of the light-emitting particles is less than 10 μm, the content of the light-emitting particles can be appropriately increased, for example, the weight ratio of the light-emitting particles to the paint is (10-13):100.

[0048] In some embodiments of the present application, the thickness of the substrate layer 1 is 1-4 mm, and the thickness of the light-emitting layer 2 is 0.3-4 mm.

[0049] The substrate layer 1 is used to ensure the structural strength of the light-emitting decorative part, so generally the thickness of the substrate layer 1 is greater than the thickness of the light-emitting layer 2. Alternatively, the thickness of the substrate layer 1 is 2.3-2.5 mm, and the thickness of the light-emitting layer 2 is 0.3-1 mm.

[0050] Exemplarily, the thickness of the substrate layer 1 can be 2.3 mm, 2.35 mm, 2.4 mm, 2.45 mm, 2.5 mm, etc.

[0051] Exemplarily, the thickness of the light-emitting layer 2 can be 0.3 mm, 0.4 mm, 0.5 mm, 0.6 mm, 0.7 mm, 0.8 mm, 0.9 mm, 1 mm, etc.

[0052] The A component of the paint is a compound or composition having a reactive hydrogen group, such as at least one of an alcohol and a derivative thereof, an ether and a derivative thereof, and an amine and a derivative thereof. These materials can be prepared by synthesis or obtained by direct purchase. Alternatively, the A component can include at least one of a polyester polyol and a polyether polyol. The B component of the paint is a compound, composition, or polymer having an isocyanate group, such as a monomer or oligomer containing an isocyanate group. These materials can be prepared by synthesis or obtained by direct purchase. Alternatively, the B component can include at least one of diisocyanate, toluene diisocyanate, and 4,4'-diphenylmethane diisocyanate.

[0053] After the A component and the B component of the paint are mixed, the reactive hydrogen group in the A component and the isocyanate group in the B component can undergo nucleophilic addition reaction, thus meeting the conditions for reaction injection molding. Specifically, by uniformly mixing the A component and the B component in a predetermined ratio under certain pressure and temperature conditions, and then injecting into a closed molding mold, the A component and the B component can undergo crosslinking reaction in the mold, and then be solidified and molded.

[0054] It should be noted that, in order to ensure the light-emitting effect of the light-emitting layer 2, in the embodiments of the present application, the light-emitting layer 2 is a transparent material layer. That is, the transparency of the light-emitting layer 2 meets the requirement that the light emitted by the light-emitting material can pass through the light-emitting layer 2, so that the user can visually observe that the light-emitting decorative piece has a light-emitting effect.

[0055] On the basis of meeting the requirement that the light-emitting layer 2 is a transparent material layer, in some embodiments, the weight ratio of the A component to the B component is 1:(0.5-5). For example, the weight ratio of the A component to the B component can be 1:0.5, 1:0.8, 1:1, 1:2, 1:3, 1:4, 1:5, etc.

[0056] Alternatively, the weight ratio of the A component to the B component is 1:(1-2). Within this range, the chemical reaction between the A component and the B component can be ensured to proceed sufficiently, and the light-emitting layer 2 can have good transparency.

[0057] One side surface of the base layer 1 is in contact with the light-emitting layer 2, and the other side surface is used for structure modeling design to improve the aesthetic appearance of the light-emitting decorative piece. The molding method of the base layer 1 can be selected according to requirements, such as injection molding, extrusion, pressing, casting, etc.

[0058] In some embodiments of the present application, the base layer 1 is injection molded using at least one of the following injection molding materials: PP, PS, PA, PC, PET, PC / ABS, etc. Among them, the injection molding material with good adhesion to the paint is preferred.

[0059] Generally, the injection molding materials such as PC, PC / ABS, etc. contain polar groups, and the surface of the substrate layer after molding has good adhesion with the paint. In this case, the light-emitting layer 2 can be directly injection molded on the substrate layer 1 subsequently.

[0060] However, in vehicle plastics, injection molding materials containing polar groups such as PC (hereinafter referred to as "polar materials") account for a very small proportion, only about 5%. Common vehicle plastics such as PP, PS, PA, etc. belong to injection molding materials containing weak polar groups or no polar groups (hereinafter referred to as "non-polar materials"), and the overall proportion is relatively high, generally more than 55%. Since the adhesion between the surface of the non-polar material substrate layer after molding and the paint is generally poor, in related technologies, the substrate parts used in the in-mold painting process are polar materials, which severely limits the use range of vehicle plastics and increases the use cost.

[0061] In the embodiments of the present application, as shown in Figure 2 For the case where the substrate layer 1 is formed by using non-polar materials such as PP, PS, and PA, the light-emitting decorative part further includes a bridging layer 3 located between the substrate layer 1 and the light-emitting layer 2 for enhancing the adhesion between the substrate layer 1 and the light-emitting layer 2. Therefore, the scheme of the embodiments of the present application reduces the requirement for material polarity, breaks through the limitation that non-polar materials cannot be applied, realizes the wide use of non-polar materials, and reduces the cost.

[0062] In some embodiments of the present application, the bridging layer 3 is obtained by surface treatment on the surface of the substrate layer 1 close to the light-emitting layer 2, and the surface treatment method includes at least one of surface treatment agent treatment, flame treatment, corona treatment, and plasma treatment.

[0063] For example, the surface treatment agent can be PP water.

[0064] After the surface treatment of the substrate layer 1, the adhesion between the surface of the substrate layer 1 and the paint is improved, and then the light-emitting layer 2 can be directly injection molded on the treated surface of the substrate layer 1.

[0065] In summary, the light-emitting decorative part provided by the embodiments of the present application has the following advantages:

[0066] Firstly, compared with the molding process of the light-emitting structural part in related technologies, the product molding process of the light-emitting structural part in the present application is simple, reduces the production and assembly of multiple parts and structures, reduces the assembly labor and labor cost, has high automation degree, high production efficiency, and reduces environmental pollution.

[0067] Secondly, compared with the forming process of the light-emitting structure in the related art, the product thickness of the light-emitting structure in the present application can be designed to be thinner, the product structure design range is wider, and the weight is lighter.

[0068] Thirdly, compared with the in-mold painting product in the related art, the polarity of the base layer material in the present application is not required, and the good adhesion with the light-emitting layer can be ensured by using the polar material or the non-polar material, which greatly expands the material use range.

[0069] The embodiment of the present application also provides a manufacturing method of the light-emitting decoration, which is used for manufacturing the light-emitting decoration described above. As shown in the figure, Figure 3 the manufacturing method comprises the following steps:

[0070] forming the base layer, then mixing the light-emitting material into the A component containing active hydrogen and the B component containing isocyanate groups according to the weight parts of each component in the light-emitting layer, stirring uniformly, and then extruding to the base layer for reaction injection molding.

[0071] Optionally, the base layer can be formed by the injection molding process. In this case, the specific process flow of forming the base layer comprises the following steps: putting the injection molding material for manufacturing the base layer into an injection molding machine; using the injection molding machine to extrude the injection molding material into a first mold, and obtaining the base layer after solidification.

[0072] The thickness of the base layer can be determined according to the design requirements.

[0073] Optionally, the specific process of mixing the light-emitting material into the A component containing active hydrogen and the B component containing isocyanate groups and reaction injection molding the light-emitting layer comprises the following steps:

[0074] adding a part of the light-emitting material into a first mixing tank where the A component is located and stirring for a first time length to obtain mixed A material; and adding another part of the light-emitting material into a second mixing tank where the B component is located and stirring for a second time length to obtain mixed B material. Then, the mixed A material and the mixed B material are stirred in a vacuum environment for a third time length to remove bubbles in the mixed A material and the mixed B material. Next, the mixed A material is extruded at a first flow rate, the mixed B material is extruded at a second flow rate, and the mixed A material and the mixed B material are mixed through a mixing head. Subsequently, the material after mixing of the mixing head is extruded into a second mold, wherein the base layer still remains on the core of the first mold without ejection because the cavity of the second mold is closed with the core of the first mold, so the material after mixing is directly extruded onto the surface of the base layer. Finally, the material in the second mold is reaction solidified to make the A component and the B component fully react to form the light-emitting layer; the product after reaction is cooled and solidified out of the mold to obtain the light-emitting structure.

[0075] Optionally, the third time length is greater than the first time length and greater than the second time length; the first time length and the second time length can be equal or not equal.

[0076] Optionally, the vacuum degree in the vacuum environment is -0.08 to -0.1 MPa, the stirring temperature is kept at 50 to 60℃, and the stirring rate is 500 to 1300 r / min. By stirring the mixture A and the mixture B in the vacuum environment respectively, the air bubbles in the materials can be removed, and then in the reaction injection molding, the luminescent material in the formed luminescent layer can be in a good sealing environment, thus the oxidation failure of part of the luminescent material can be reduced, and the service life of the luminescent decorative part can be improved.

[0077] In addition, the mixing head is connected to the cavity of the second mold, the cavity of the second mold is closed with the core of the first mold, and the formed base layer still remains on the core of the first mold without ejection. The mixture A and the mixture B are mixed and extruded on the surface of the base layer through the mixing head, and the luminescent layer is obtained after solidification.

[0078] Optionally, the mixing ratio of the mixture A and the mixture B can be regulated by controlling the first flow rate of the mixture A and the second flow rate of the mixture B. Further, the flow rate can be determined by the mixing extrusion pressure.

[0079] Optionally, after the cavity of the second mold is closed with the core of the first mold, a certain gap is reserved, and the width of the gap is used to determine the thickness of the luminescent layer.

[0080] Optionally, the extrusion speed of the mixing head to the material is 1 g / s to 300 g / s.

[0081] Optionally, the reaction temperature when the material in the second mold is subjected to reaction and solidification is 70 to 100℃, the reaction time is 3 to 10 s, and the cooling time for cooling and solidification is 60 s to 5 min.

[0082] In some embodiments of the present application, in the case that the surface of the base layer contains weak polar groups or non-polar groups, after the base layer is formed, the manufacturing method further comprises:

[0083] opening the first mold so that the base layer remains on the core of the first mold without ejection; performing surface treatment on the surface of the base layer in the first mold to obtain a linking layer; and closing the core of the first mold containing the surface-treated base layer with the cavity of the second mold, and reserving a certain gap after closing.

[0084] The present application will be further described through specific embodiments below, and in the description, three stages of base layer molding, luminescent layer mixing and extruding, and luminescent layer solidification molding will be described in detail respectively.

[0085] Embodiment 1

[0086] First stage: base layer molding

[0087] The injection molding machine is used to extrude the injection molding material PC into the first mold, and the PC substrate layer is formed after cooling and solidification, and the thickness of the PC substrate layer is 2.5 mm. Among them, the barrel temperature of the injection molding machine is 250-320℃, the extrusion pressure is 50-80MPa, the mold temperature of the first mold is 80-110℃, and the cooling time of cooling and solidification is 10s.

[0088] The first mold is opened, but the PC substrate layer is not ejected, but the PC substrate layer is still kept on the core of the first mold.

[0089] The core of the first mold containing the PC substrate layer is matched with the cavity of the second mold through the rotating table and closed to realize the clamping. Among them, according to the thickness design requirement of the light emitting layer, a gap of corresponding width is reserved after the cavity of the second mold and the core of the first mold are clamped.

[0090] Second stage: mixed extrusion of light emitting layer

[0091] A certain weight of fluorite with a particle size of 50μm is divided into two parts, one part is added to the first mixing tank where component A is located and stirred uniformly to obtain mixed A material with a weight ratio of 10% of light emitting material and 90% of component A; The other part is added to the second mixing tank where component B is located and stirred uniformly to obtain mixed B material with a weight ratio of 10% of light emitting material and 90% of component B. Among them, the weight ratio of A component and B component is 1:0.8; A component includes the following weight percentage of substances: polyether polyol 99.2%, ethanolamine 0.8%; B component includes the following weight percentage of substances: 4,4'-diphenyl methane diisocyanate 60%, diphenylamine methane isocyanate 40%. Exemplarily, the polyether polyol can use aliphatic polyol (C1-20) alkyl oxide (C2-4), wherein C1-20 refers to the total number of carbon atoms in the aliphatic polyol is 1-20, and C2-4 refers to the total number of carbon atoms in the alkyl oxide is 2-4.

[0092] Then, mix A material and mix B material are stirred under vacuum conditions to remove bubbles in mix A material and mix B material respectively. The stirring environment needs to be vacuum environment during the stirring process, wherein the vacuum degree is-0.09MPa, the stirring temperature is kept at 60℃, and the stirring rate is 750r / min.

[0093] Mix A material and mix B material are mixed through the mixing head and extruded into the core of the first mold and the cavity of the second mold after closing. Among them, the flow rate of mix A material is 10g / s, the flow rate of mix B material is 20g / s, and the gap width reserved in the clamped mold is 0.3mm, so that the thickness of the light emitting layer is 0.3mm.

[0094] Third stage: light-emitting layer solidification molding

[0095] After the cavity of the second mold is filled, the A component and the component B react and solidify in the cavity of the second mold, the reaction temperature is 70°C, and the reaction time is 4s; after the reaction is completed, cooling solidification is performed, and the cooling time is 60s. After the cooling solidification is completed, the mold is opened, and the light-emitting structure part is obtained.

[0096] Example 2

[0097] First stage: base layer molding

[0098] An injection molding machine is used to extrude and inject the material PP into the first mold, and after cooling and solidification, the PP base layer is formed, and the thickness of the PP base layer is 2.5mm. The barrel temperature of the injection molding machine is 200-300°C, the extrusion pressure is 100-160MPa, the mold temperature is 30-70°C, and the cooling time for cooling and solidification is 10s.

[0099] The first mold is opened, but the PP base layer is not ejected, but remains on the core of the first mold.

[0100] The surface of the PP base layer is flame treated, that is, the flame is quickly passed back and forth over the surface of the PP base layer once, and the transition layer is obtained.

[0101] The core of the first mold containing the PP base layer is matched with the cavity of the second mold through a rotating table and closed to realize mold clamping. According to the thickness design requirements of the light-emitting layer, a gap of corresponding width is reserved after the cavity of the second mold is clamped with the core of the first mold.

[0102] Second stage: light-emitting layer mixed extrusion

[0103] A certain weight of artificial strontium boron aluminate with a particle size of 50μm is divided into two parts, one part is added to the first mixing tank where the A component is located and stirred uniformly to obtain a mixture A with a weight ratio of 12% of the light-emitting material and 88% of the A component; the other part is added to the second mixing tank where the component B is located and stirred uniformly to obtain a mixture B with a weight ratio of 12% of the light-emitting material and 88% of the component B. The weight ratio of the A component to the B component is 1:0.85; the A component includes the following substances in the following weight percentages: polyether polyol 99.2%, ethanol amine 0.8%; the B component includes the following substances in the following weight percentages: 4,4'-diphenyl methane diisocyanate 60%, diphenylamine methane isocyanate 40%. Exemplarily, the polyether polyol can be an aliphatic polyol (C1-20)·alkyl oxide (C2-4), wherein C1-20 refers to the total number of carbon atoms in the aliphatic polyol being 1-20, and C2-4 refers to the total number of carbon atoms in the alkyl oxide being 2-4.

[0104] Then, the mixing A and mixing B are stirred sufficiently under vacuum condition to remove the bubbles in the mixing A and mixing B respectively, and the stirring environment is ensured to be vacuum environment, wherein the vacuum degree is -0.09 MPa, the stirring temperature is kept at 60℃, and the stirring rate is 750 r / min.

[0105] The mixing A and mixing B are mixed through a mixing head and extruded into the core of the first mold and the cavity of the second mold after the molds are closed. The flow rate of the mixing A is 20 g / s, the flow rate of the mixing B is 40 g / s, and the gap width reserved in the closed mold is 0.5 mm, so that the thickness of the light-emitting layer is 0.5 mm.

[0106] The third stage: the light-emitting layer is cured and formed

[0107] After the cavity of the second mold is filled, the component A and component B react and cure in the cavity of the second mold, the reaction temperature is 80℃, and the reaction time is 3 s; after the reaction is completed, cooling and curing are performed, and the cooling time is 60 s. After the cooling and curing are completed, the mold is opened, and the light-emitting structure is obtained.

[0108] Other embodiments of the application will be apparent to those skilled in the art from consideration of the specification and practice of the application disclosed herein. It is intended that the application be limited only by the scope of the claims, including all variations and adaptations thereof that are within the spirit and scope of the application. The specification and examples are to be construed as merely illustrative of the preferred embodiments of the application.

[0109] It should be understood that the application is not limited to the precise construction that has been described above and illustrated in the accompanying drawings, and that various modifications and changes can be made by those skilled in the art without departing from the scope of the application. The scope of the application is limited only by the claims that follow, and the embodiment described and illustrated herein are exemplary only.

Claims

1. A luminous decorative element, characterized in that, The light-emitting decoration piece comprises a base layer and a light-emitting layer reaction injection molded on the base layer; The light-emitting layer comprises the following components by weight: 1-30 parts by weight of a light-emitting material, 100 parts by weight of a paint; The paint is polymerized from a component A containing a reactive hydrogen group and a component B containing an isocyanate group; The weight ratio of the component A to the component B is 1:(0.5-5); The component A is selected from at least one of an alcohol containing the reactive hydrogen group and its derivative, an ether containing the reactive hydrogen group and its derivative, and an amine containing the reactive hydrogen group and its derivative; and / or, The component B is a monomer or an oligomer containing the isocyanate group.

2. The lighted ornament of claim 1, wherein, The light-emitting material is a light-emitting liquid, and the light-emitting layer comprises the following components by weight: 3-15 parts by weight of the light-emitting liquid, 100 parts by weight of the paint.

3. The lighted ornament of claim 1, wherein, The light-emitting material is a solid light-emitting particle, and the light-emitting layer comprises the following components by weight: 4-13 parts by weight of the light-emitting particle, 100 parts by weight of the paint.

4. The lighted ornament of claim 3, wherein, The particle size of the light-emitting particle is 0.05-100 μm.

5. The lighted ornament of claim 1, wherein, The thickness of the base layer is 1-4 mm, and the thickness of the light-emitting layer is 0.3-4 mm.

6. The lighted ornament of claim 1, wherein, The surface of the base layer close to the light-emitting layer has a weak polar group or no polar group; The light-emitting decoration piece further comprises a linking layer between the base layer and the light-emitting layer for improving the adhesion between the base layer and the light-emitting layer.

7. The lighted ornament of claim 6, wherein, The linking layer is obtained by surface treatment on the surface of the base layer close to the light-emitting layer, and the surface treatment mode comprises at least one of surface treatment agent treatment, flame treatment, corona treatment, and plasma treatment.

8. A method for manufacturing a light-emitting ornament according to any one of claims 1 to 7, characterized by, The manufacturing method comprises the following steps: forming a base layer; mixing the light-emitting material into the component A containing the reactive hydrogen and the component B containing the isocyanate group according to the weight of each component in the light-emitting layer, stirring uniformly, and then extruding onto the base layer for reaction injection molding.

Images