Composite plastic, preparation method thereof and application of composite plastic in preparation of artificial plants

Abstract

The invention belongs to the technical field of artificial plants, and particularly relates to composite plastic, a preparation method thereof and application of the composite plastic in preparation of artificial plants. The composite plastic is prepared from the following raw materials: polyethylene (PE), thermoplastic elastomer (TPE) and toner, the mass ratio of the polyethylene (PE) to the thermoplastic elastomer (TPE) is (1-3): 1. The composite plastic disclosed by the invention is particularly outstanding in simulation effect, can realistically simulate the appearance and texture of natural plants, has the characteristics of odorlessness, flame retardance and corrosion resistance, and ensures the durability of the composite plastic in various environments.

Description

Technical Field

[0001] The present invention belongs to the technical field of artificial plants, and particularly relates to a composite plastic, a preparation method thereof, and an application thereof in the preparation of artificial plants. Background Art

[0002] As an important festival decoration for Christmas, artificial Christmas trees have a huge market demand. Especially in Western countries, almost every household will buy artificial Christmas trees as festival decorations. With the development of the times, people's awareness of environmental protection has gradually increased, and tree felling has been strictly restricted. Artificial Christmas trees are favored because of their characteristics of being reusable and not requiring tree felling.

[0003] Artificial Christmas trees refer to products that imitate the shape and texture of natural plants through artificial materials, usually made of materials such as stretched silk, crepe paper, polyester, plastic, and crystal. At present, the simulation effect and manufacturing process of artificial Christmas trees have been significantly improved, but some technical problems still exist in actual applications. First, the manufacturing materials of most artificial plants are flammable, posing potential fire hazards. Especially during festivals, artificial Christmas trees are often in contact with heat sources such as electric lights and candles, increasing the fire risk. Second, the weather resistance and durability of existing materials are insufficient. After long-term use, artificial Christmas trees are prone to fading and deformation, affecting their aesthetics and service life. In addition, artificial Christmas trees for export need to be transported for a long time. During transportation, artificial Christmas trees will be squeezed, resulting in a significant reduction in their simulation effect, which not only affects the appearance of the products but also increases the transportation and storage costs.

[0004] Therefore, in order to improve the safety, durability, and compressive resistance of artificial plants and artificial Christmas trees, it is urgent to develop a composite plastic for the preparation of artificial plants. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a composite plastic, a preparation method thereof, and an application thereof in the preparation of artificial plants. The composite plastic of the present invention is particularly outstanding in terms of simulation effect, can realistically simulate the appearance and texture of natural plants, and at the same time can have the characteristics of being odorless, flame-retardant, and corrosion-resistant, ensuring its durability in various environments.

[0006] The technical solution adopted by the present invention to solve the above problems is as follows:

[0007] A composite plastic, comprising the following preparation raw materials: polyethylene (PE), thermoplastic elastomer (TPE), and color powder; the mass ratio of the polyethylene (PE) to the thermoplastic elastomer (TPE) is 1 - 3:1.

[0008] Preferably, the mass ratio of the polyethylene (PE) to the thermoplastic elastomer (TPE) is 2:1.

[0009] Preferably, the composite plastic further comprises at least one of the following raw materials for preparation: a flame retardant and an ultraviolet light inhibitor. In the above technical solution, the addition amounts of the flame retardant and the ultraviolet light inhibitor can refer to the addition amounts commonly used in the art.

[0010] Preferably, by mass percentage, the dosage of the color powder is 0.1% - 0.5%; the dosage of the flame retardant is 10% - 20%; the dosage of the ultraviolet light inhibitor is 0.5% - 2%.

[0011] Exemplarily, the flame retardant can be preferably a highly dispersible halogen - free flame retardant masterbatch CM - 60X, and the ultraviolet light inhibitor can be at least one of benzophenone - type ultraviolet absorbers and benzotriazole - type ultraviolet absorbers.

[0012] The present invention provides a method for preparing the above - mentioned composite plastic, comprising the following steps: weighing the raw materials for preparation according to the ratio, mixing the above - mentioned raw materials, adding them to a twin - screw extruder, and extruding and pelletizing at 200°C - 300°C to obtain composite plastic particles.

[0013] The present invention also provides the application of the above - mentioned composite plastic in the preparation of artificial plants.

[0014] Further, the artificial plant includes an artificial Christmas tree.

[0015] The present invention also provides an artificial plant prepared from the above - mentioned composite plastic.

[0016] Further, the method for preparing the artificial plant includes: in an artificial plant mold, melting and extruding the composite plastic particles through an injection molding machine for shaping to obtain the artificial plant.

[0017] Further, the temperature of melting and extruding by the injection molding machine is 260°C.

[0018] The present invention has the following beneficial effects:

[0019] The present invention provides a composite plastic composed of polyethylene (PE) and thermoplastic elastomer (TPE) in a mass ratio of 1 - 3:1. Through scientific ratio optimization, the comprehensive performance and simulation effect of the material are significantly improved. This composite plastic is particularly outstanding in the simulation effect, can realistically simulate the appearance and texture of natural plants, and at the same time can have the characteristics of being odorless, flame - retardant and corrosion - resistant, ensuring its durability in various environments.

[0020] In the process of preparing simulation materials, the composite plastic of the present invention is easy to color and has uniform color, without the need for secondary coloring treatment, which simplifies the production process and reduces costs. The simulation plants made of this composite plastic have a realistic appearance, a natural feel, good elasticity and compressive properties, can withstand long-term transportation and storage, and are not prone to oxidation and fading, suitable for long-term use, and can meet the market demand for high-quality simulation plants. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 Diagrams of the simulation plants prepared in Example 1, Comparative Example 1 and Comparative Example 2.

[0022] Figure 2 Diagrams of the compressive property tests of the branches of the simulation plants prepared in Example 1, Comparative Example 3 and Comparative Example 4.

[0023] Figure 3 Diagrams of the color fastness tests of the branches and leaves of the simulation plants prepared in Example 1 and Comparative Example 3. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments, and even less a limitation of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0025] Unless otherwise specified, the test materials, reagents, methods and equipment used in the following embodiments are conventional test materials, reagents, methods and equipment in the technical field of the present invention; unless otherwise specified, the test materials and reagents used in the following embodiments can all be obtained through commercial channels.

[0026] The following embodiments and comparative examples respectively provide a simulation plant, and the preparation raw materials and dosages used in the simulation plants of each embodiment and comparative example are shown in Table 1.

[0027] Table 1:

[0028] Preparation raw materials Example 1 Example 2 Example 3 Comparative example 1 Comparative example 2 Comparative example 3 Comparative example 4 PE 80 60 90 80 40 120 / TPE 40 60 30 20 80 / / PVC / / / / / / 120 Color powder 0.5 0.5 0.5 0.5 0.5 0.5 0.5 Flame retardant 20 20 20 20 20 20 20 Ultraviolet light inhibitor 2 2 2 2 2 2 2

[0029] The preparation methods of the simulation plants provided in Examples 1 to 3 include the following steps:

[0030] (1) Weigh the preparation raw materials according to the ratio. After mixing the preparation raw materials, add them to a twin-screw extruder and extrude and pelletize at 250 °C to obtain composite plastic particles;

[0031] (2) In the simulation plant mold, the composite plastic particles are melted and extruded at 260 °C by an injection molding machine to form a simulation plant.

[0032] The preparation methods of the simulation plants provided in Comparative Examples 1 to 4 can be obtained in the same way.

[0033] The following performance tests were carried out on the simulation plants prepared in the above examples and comparative examples:

[0034] (1) Appearance and touch test;

[0035] (2) Compressive property test: Wrap the branches of the simulation plant with tape. After the same period of time, cut open the tape and observe the compressive resistance of the branches of the simulation plant.

[0036] (3) Color fastness test: Paste the colored branches and leaves of the simulation plant with tape. After the same period of time, tear off the tape and observe the color fading of the branches and leaves of the simulation plant.

[0037] Figure 1 are the simulation plants prepared in Example 1, Comparative Example 1 and Comparative Example 2. From Figure 1 It can be seen that when the mass ratio of PE to TPE is 2:1, the material shows the best performance balance: the overall tree shape is full, the touch is soft, it has good support, and it does not appear rigid or loose. The composite plastic under this ratio not only retains the excellent processing performance and cost advantages of PE, but also significantly improves the simulation effect and touch of the material through the elastic characteristics of TPE. When the mass ratio of PE to TPE is 4:1, the obtained simulation plant is too hard and the touch is prickly; when the mass ratio of PE to TPE is 1:2, the obtained simulation plant is too soft and lacks support. The ratio of PE to TPE selected in the present invention perfectly balances the hardness and elasticity of the material, making it closer to the touch and shape of natural plants.

[0038] Figure 2 are the test diagrams of the compressive properties of the branches of the simulation plants prepared in Example 1, Comparative Example 3 and Comparative Example 4. From Figure 2 It can be seen that the compressive resistance of the branches of the simulation plant in Example 1 is significantly better than that of the branches of the simulation plants in Comparative Example 3 and Comparative Example 4.

[0039] Figure 3 are the test diagrams of the color fastness of the branches and leaves of the simulation plants prepared in Example 1 and Comparative Example 3. From Figure 3 It can be seen that the color fastness of the branches and leaves of the simulation plant in Example 1 is significantly better than that of the branches and leaves of the simulation plant in Comparative Example 3.

[0040] The present invention provides a composite plastic composed of polyethylene (PE) and thermoplastic elastomer (TPE) with a mass ratio of 1 to 3:1. Through scientific proportion optimization, the comprehensive performance and simulation effect of the material are significantly improved. This composite plastic is particularly outstanding in terms of simulation effect, capable of realistically simulating the appearance and texture of natural plants, and at the same time can have the characteristics of being odorless, flame-retardant, and corrosion-resistant, ensuring its durability in various environments.

[0041] In the process of preparing simulation materials with the composite plastic of the present invention, it is easy to color and the color is uniform, without the need for secondary coloring treatment, which simplifies the production process and reduces costs. The simulation plants made of this composite plastic have a realistic appearance, a natural feel, good elasticity, and compressive performance, can withstand long-term transportation and storage, and are not prone to oxidation and fading, suitable for long-term use, and can meet the market demand for high-quality simulation plants.

[0042] The preferred embodiments of the present invention have been described in detail above. However, the present invention is not limited to the specific details in the above embodiments. Within the scope of the technical concept of the present invention, various simple modifications can be made to the technical solutions of the present invention, and these simple modifications all belong to the protection scope of the present invention.

[0043] In addition, it should be noted that in the above specific embodiments, the various specific technical features described can be combined in any suitable way without conflict. To avoid unnecessary repetition, the present invention will not separately describe various possible combination methods.

[0044] Furthermore, any combination can be made between various different embodiments of the present invention as long as it does not violate the idea of the present invention, and it should also be regarded as the content disclosed by the present invention.

Claims

1. A composite plastic, characterized in that, It includes the following preparation raw materials: polyethylene, thermoplastic elastomer, and color powder; the mass ratio of the polyethylene to the thermoplastic elastomer is 1-3:

1.

2. The composite plastic according to claim 1, characterized in that, It further includes at least one of the following preparation raw materials: flame retardant, ultraviolet light inhibitor.

3. The composite plastic according to claim 2, characterized in that, By mass percentage, the dosage of the color powder is 0.1%-0.5%; the dosage of the flame retardant is 10%-20%; the dosage of the ultraviolet light inhibitor is 0.5%-2%.

4. A method for preparing the composite plastic according to any one of claims 1-3, characterized in that, It includes the following steps: Weigh the preparation raw materials according to the ratio, mix the above-mentioned preparation raw materials, add them to a twin-screw extruder, and extrude and pelletize at 200°C-300°C to obtain composite plastic particles.

5. Use of the composite plastic according to any one of claims 1-3 in the preparation of artificial plants.

6. The application according to claim 5, characterized in that, The artificial plant includes an artificial Christmas tree.

7. An artificial plant prepared from the composite plastic according to any one of claims 1-3.

8. The preparation method of the artificial plant according to claim 7, wherein, It includes: In an artificial plant mold, the composite plastic particles are melted and extruded by an injection molding machine for shaping to obtain an artificial plant.

9. The preparation method of the simulated plant according to claim 8, characterized in that The temperature of the molten extrusion of the injection molding machine is 260°C.

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