Photovoltaic high-performance floating body material and preparation method thereof

Abstract

The invention provides a photovoltaic high-performance floating body material. The photovoltaic high-performance floating body material is formed by compounding an outer-layer material and an inner-layer material, the outer layer is made of a high-density polyethylene resin material; the inner layer material is prepared from the following raw materials in parts by weight: 40 parts of PP resin; 10 to 15 parts by weight of POE resin; 20 to 40 parts by weight of modified PP; 0.01 to 0.05 part by weight of an antioxidant; 1-2 parts by weight of a coupling agent; 10-20 parts by weight of an inorganic filler material; and 1-10 parts by weight of a fiber reinforced material. Compared with the prior art, the photovoltaic high-performance floating body material provided by the invention is formed by compounding the outer-layer material and the inner-layer material with a specific content, so that the overall relatively good interaction is realized, and the product has relatively high tensile strength, hardness and impact resistance, is low in density and good in heat resistance, and can be stably applied to the sea for a long time.

Description

Technical Field

[0001] The present invention relates to the technical field of floating materials, and more specifically, to a high-performance floating material for photovoltaics and a preparation method thereof. Background Art

[0002] The blow-molded buoy is an important part of the water-based photovoltaic platform, carrying various components and junction box electrical appliances. Its performance and structure directly determine whether the photovoltaic power station can operate smoothly. At present, water-based power stations are mainly used in inland lakes and other waters, but when used on the sea, the performance of the buoy needs to be improved to increase the strength of the buoy. Summary of the invention

[0003] In view of this, the purpose of the present invention is to provide a high-performance floating material for photovoltaics and a preparation method thereof. The high-performance floating material for photovoltaics provided by the present invention has high tensile strength, hardness and impact resistance, as well as low density and good heat resistance, and can be stably used at sea for a long time.

[0004] The present invention provides a high-performance floating material for photovoltaics, which is composited by an outer layer material and an inner layer material; the outer layer material is a high-density polyethylene resin material;

[0005] The inner layer material is prepared from raw materials including the following components:

[0006] 40 parts by weight of PP resin;

[0007] 10 to 15 parts by weight of POE resin;

[0008] Modified PP 20 to 40 parts by weight;

[0009] 0.01 to 0.05 parts by weight of antioxidant;

[0010] 1 to 2 parts by weight of coupling agent;

[0011] 10 to 20 parts by weight of inorganic filler;

[0012] 1 to 10 parts by weight of fiber reinforcement material.

[0013] Preferably, the high-density polyethylene resin material is prepared from raw materials including the following components:

[0014] 90 parts by weight of high density polyethylene;

[0015] 0.01 to 0.1 parts by weight of antioxidant;

[0016] Light stabilizer 0.005 to 0.015 parts by weight;

[0017] 5 to 15 parts by weight of carbon black;

[0018] 0.01 to 0.03 parts by weight of light absorber

[0019] Preferably, the preparation method of the high-density polyethylene resin material is specifically as follows:

[0020] The antioxidant, light stabilizer, carbon black, light absorber and high-density polyethylene are physically blended to obtain a mixture; the mixture is then added into a screw extrusion device for extrusion granulation to obtain a high-density polyethylene resin material.

[0021] Preferably, the POE resin is one or more polymers of ethylene and butene.

[0022] Preferably, the modified PP is acrylic acid grafted polypropylene.

[0023] Preferably, the antioxidant consists of a primary antioxidant and a secondary antioxidant in a mass ratio of 1:(1-2); the primary antioxidant is selected from antioxidant 1076 and / or antioxidant 330; the secondary antioxidant is selected from triphosphite and / or distearyl diphosphite.

[0024] Preferably, the coupling agent is selected from a silane coupling agent and / or a titanate coupling agent.

[0025] Preferably, the inorganic filling material is selected from one or more of calcium carbonate, titanium dioxide, and fly ash; and the mesh size of the inorganic filling material is 2000-3000 mesh.

[0026] Preferably, the fiber reinforcement material is selected from one or more of bamboo fiber, glass fiber and basalt fiber.

[0027] The present invention also provides a method for preparing the high-performance floating material for photovoltaic use described in the above technical solution, comprising the following steps:

[0028] a) Mixing PP resin, POE resin, modified PP, antioxidant, coupling agent, inorganic filler and fiber reinforcement material at a speed of 150 r / min to 350 r / min for 10 min to 30 min to obtain a mixture;

[0029] b) adding the mixed material obtained in step a) into a twin-screw extruder for granulation, wherein the temperature of the first section of the twin-screw is 140°C to 160°C, the temperature of the second section is 160°C to 180°C, the temperature of the third section is 175°C to 185°C, and the temperature of the fourth section is 170°C to 190°C, to obtain an inner layer material;

[0030] c) Blow molding the inner layer material and the outer layer material obtained in step b) at three temperatures, the first stage is 170°C to 195°C, the second stage is 190°C to 205°C, and the third stage is 200°C to 180°C, to obtain a high-performance floating material for photovoltaics.

[0031] The present invention provides a high-performance floating material for photovoltaic use, which is composited by an outer layer material and an inner layer material; the outer layer material is a high-density polyethylene resin material; the inner layer material is prepared from raw materials including the following components: 40 parts by weight of PP resin; 10 to 15 parts by weight of POE resin; 20 to 40 parts by weight of modified PP; 0.01 to 0.05 parts by weight of antioxidant; 1 to 2 parts by weight of coupling agent; 10 to 20 parts by weight of inorganic filler material; 1 to 10 parts by weight of fiber reinforced material. Compared with the prior art, the high-performance floating material for photovoltaic use provided by the present invention is composited by an outer layer material and an inner layer material composed of a specific content, achieving better overall interaction, and the product has higher tensile strength, hardness and impact resistance, and at the same time has low density and good heat resistance, and can be stably applied at sea for a long time.

[0032] In addition, the preparation method provided by the present invention has simple process, easy operation, mild conditions and broad application prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 A schematic structural diagram of a high-performance floating material for photovoltaics provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0034] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] The present invention provides a high-performance floating material for photovoltaics, which is composited by an outer layer material and an inner layer material; the outer layer material is a high-density polyethylene resin material;

[0036] The inner layer material is prepared from raw materials including the following components:

[0037] 40 parts by weight of PP resin;

[0038] 10 to 15 parts by weight of POE resin;

[0039] Modified PP 20 to 40 parts by weight;

[0040] 0.01 to 0.05 parts by weight of antioxidant;

[0041] 1 to 2 parts by weight of coupling agent;

[0042] 10 to 20 parts by weight of inorganic filler;

[0043] 1 to 10 parts by weight of fiber reinforcement material.

[0044] The present invention provides a high-performance photovoltaic floating material, which has high strength and enables the floating body to be stably used at sea for a long time; the high-performance photovoltaic floating material is composited by an outer layer material and an inner layer material; wherein the outer layer material is mainly HDPE and other weather-resistant additives, and the inner layer material is mainly modified PP material; the inner layer material is attached to the outer layer material, and the specific finished product is shown in the attached Figure 1 , wherein 1 is the outer layer material, 2 is the inner layer material, and 3 is the inner cavity of the finished floating structure.

[0045] In the present invention, the outer layer material is a high-density polyethylene resin material; the high-density polyethylene resin material is preferably prepared from raw materials including the following components:

[0046] 90 parts by weight of high density polyethylene;

[0047] 0.01 to 0.1 parts by weight of antioxidant;

[0048] Light stabilizer 0.005 to 0.015 parts by weight;

[0049] 5 to 15 parts by weight of carbon black;

[0050] 0.01 to 0.03 parts by weight of light absorber;

[0051] More preferably, it is prepared from the following raw materials:

[0052] 90 parts by weight of high density polyethylene;

[0053] Antioxidant 0.05 parts by weight;

[0054] Light stabilizer 0.01 parts by weight;

[0055] 10 parts by weight of carbon black;

[0056] Light absorber 0.02 parts by weight.

[0057] The present invention has no special restrictions on the sources of the high-density polyethylene, antioxidant, light stabilizer, carbon black and light absorber, and commercially available products known to those skilled in the art may be used.

[0058] In the present invention, the antioxidant is preferably composed of a primary antioxidant and a secondary antioxidant in a mass ratio of 1: (1-2), more preferably composed of a primary antioxidant and a secondary antioxidant in a mass ratio of 1: 1; the primary antioxidant is preferably selected from antioxidant 1076 (octadecyl propionate antioxidant) and / or antioxidant 330 (1,3,5-trimethyl-2,4,6-triphenyl); the secondary antioxidant is preferably selected from triphosphite (TNP) and / or distearyl diphosphite (DPD).

[0059] In the present invention, the light stabilizer is preferably 2,2'-thiobis(4-tert-octylphenoloxy)nickel, 4-benzoyloxy-2,2,6,6-tetramethylpiperidine or hexamethylphosphoric triamide; the light absorber is preferably 2,4-dihydroxybenzophenone, phenyl o-hydroxybenzoate or 2-hydroxy-4-methoxybenzophenone.

[0060] In the present invention, the preparation method of the high-density polyethylene resin material is preferably specifically as follows:

[0061] The antioxidant, light stabilizer, carbon black, light absorber and high-density polyethylene are physically blended to obtain a mixture; the mixture is then added into a screw extrusion device for extrusion granulation to obtain a high-density polyethylene resin material.

[0062] In the present invention, the inner layer material is prepared from raw materials including the following components:

[0063] 40 parts by weight of PP resin;

[0064] 10 to 15 parts by weight of POE resin;

[0065] Modified PP 20 to 40 parts by weight;

[0066] 0.01 to 0.05 parts by weight of antioxidant;

[0067] 1 to 2 parts by weight of coupling agent;

[0068] 10 to 20 parts by weight of inorganic filler;

[0069] 1 to 10 parts by weight of fiber reinforcement material;

[0070] It is preferably prepared from the following raw materials:

[0071] 40 parts by weight of PP resin;

[0072] 10 to 15 parts by weight of POE resin;

[0073] Modified PP 20 to 40 parts by weight;

[0074] 0.01 to 0.05 parts by weight of antioxidant;

[0075] 1 to 2 parts by weight of coupling agent;

[0076] 10 to 20 parts by weight of inorganic filler;

[0077] 1 to 10 parts by weight of fiber reinforcement material.

[0078] The present invention has no particular limitation on the sources of the PP resin, POE resin, modified PP, antioxidant, coupling agent, inorganic filler and fiber reinforcement material, and commercially available products known to those skilled in the art may be used.

[0079] In the present invention, the POE resin is preferably one or more polymers of ethylene and butene.

[0080] In the present invention, the modified PP is preferably acrylic acid grafted polypropylene.

[0081] In the present invention, the antioxidant is preferably composed of a primary antioxidant and a secondary antioxidant in a mass ratio of 1: (1-2), more preferably composed of a primary antioxidant and a secondary antioxidant in a mass ratio of 1: 1; the primary antioxidant is preferably selected from antioxidant 1076 (octadecyl propionate antioxidant) and / or antioxidant 330 (1,3,5-trimethyl-2,4,6-triphenyl); the secondary antioxidant is preferably selected from triphosphite (TNP) and / or distearyl diphosphite (DPD).

[0082] In the present invention, the coupling agent is preferably selected from a silane coupling agent and / or a titanate coupling agent.

[0083] In the present invention, the inorganic filler material is preferably selected from one or more of calcium carbonate, titanium dioxide, and fly ash; the mesh size of the inorganic filler material is preferably 2000 mesh to 3000 mesh, more preferably 2500 mesh.

[0084] In the present invention, the fiber reinforcement material is preferably selected from one or more of bamboo fiber, glass fiber and basalt fiber.

[0085] The present invention also provides a method for preparing the high-performance floating material for photovoltaic use described in the above technical solution, comprising the following steps:

[0086] a) Mixing PP resin, POE resin, modified PP, antioxidant, coupling agent, inorganic filler and fiber reinforcement material at a speed of 150 r / min to 350 r / min for 10 min to 30 min to obtain a mixture;

[0087] b) adding the mixed material obtained in step a) into a twin-screw extruder for granulation, wherein the temperature of the first section of the twin-screw is 140°C to 160°C, the temperature of the second section is 160°C to 180°C, the temperature of the third section is 175°C to 185°C, and the temperature of the fourth section is 170°C to 190°C, to obtain an inner layer material;

[0088] c) Blow molding the inner layer material and the outer layer material obtained in step b) at three temperatures, the first stage is 170°C to 195°C, the second stage is 190°C to 205°C, and the third stage is 200°C to 180°C, to obtain a high-performance floating material for photovoltaics.

[0089] In the present invention, the mixing device in step a) is preferably a high-speed mixer, which can fully and evenly mix the materials.

[0090] In the present invention, the blow molding and compounding device in step c) is preferably a multi-layer blow molding machine, so that the inner layer material and the outer layer material are compounded to form a high-performance floating material for photovoltaics.

[0091] The present invention adopts the above technical solution and has the following beneficial effects:

[0092] (1) Improve the tensile strength of floating structures on the water surface;

[0093] (2) The appropriate amount of fiber-reinforced materials and inorganic fillers can improve the tensile strength while improving the deadweight of the floating body, which can greatly increase the load-bearing capacity of the surface floating body system;

[0094] (3) Adding an appropriate amount of POE and modified PP materials can improve the impact resistance and heat resistance of the material.

[0095] The present invention provides a high-performance floating material for photovoltaic use, which is composited by an outer layer material and an inner layer material; the outer layer material is a high-density polyethylene resin material; the inner layer material is prepared from raw materials including the following components: 40 parts by weight of PP resin; 10 to 15 parts by weight of POE resin; 20 to 40 parts by weight of modified PP; 0.01 to 0.05 parts by weight of antioxidant; 1 to 2 parts by weight of coupling agent; 10 to 20 parts by weight of inorganic filler material; 1 to 10 parts by weight of fiber reinforced material. Compared with the prior art, the high-performance floating material for photovoltaic use provided by the present invention is composited by an outer layer material and an inner layer material composed of a specific content, achieving better overall interaction, and the product has higher tensile strength, hardness and impact resistance, and at the same time has low density and good heat resistance, and can be stably applied at sea for a long time.

[0096] In addition, the preparation method provided by the present invention has simple process, easy operation, mild conditions and broad application prospects.

[0097] In order to further illustrate the present invention, the following examples are used for detailed description. The raw materials used in the following examples of the present invention are all commercially available commodities; among them, HDPE is provided by North Huajin, model TR580H; antioxidant is the main antioxidant 1076 and the auxiliary antioxidant TNP with a mass ratio of 1:1; light stabilizer is hexamethylphosphoric acid triamide; light absorber is phenyl o-hydroxybenzoate; PP resin: manufacturer (Sumitomo); brand (D801); modified PP is acrylic acid grafted polypropylene: manufacturer (Chongqing Hailian Fine Chemical Co., Ltd.), brand (CP-1 modified resin); POE resin is 6102FL of Exxon in the United States; fiber reinforcement material is provided by Jiangsu Kangdafu New Material Technology Co., Ltd., specification is 6mm short chopped alkali-free glass fiber; inorganic filler material is titanium dioxide, particle size specification is 0.2~0.3μm; coupling agent is titanate coupling agent, specification NDZ-201, Nanjing Nengde.

[0098] Examples and Comparative Examples

[0099] (1) Material composition (parts by weight):

[0100] See Table 1 for description.

[0101] Table 1

[0102]

[0103] (2) Preparation method:

[0104] ① Outer layer material: Physically blend the antioxidant, light stabilizer, carbon black, light absorber and high-density polyethylene according to the proportions in Table 1 (stirring speed: 50-80 r / min; stirring time 10 min, room temperature) to obtain a blended mixture; then add the blended mixture into a screw extruder for extrusion granulation (set extrusion equipment parameters: 160-200°C, set screw speed 80-100 r / min) to obtain an outer layer material.

[0105] ② Inner layer material: PP resin, POE resin, modified PP, antioxidant, coupling agent, inorganic filler and fiber reinforcement are mixed according to the proportions in Table 1, added into a high-speed mixer for mixing, the speed is set to 250 rpm, and mixed for 20 minutes to ensure that the mixture is fully mixed and uniform; then the mixed PP resin material is added into a twin-screw extruder for granulation, the temperature of the first section of the twin-screw is 140°C~160°C, the temperature of the second section is 160°C~180°C, the temperature of the third section is 175°C~185°C, and the temperature of the fourth section is 170°C~190°C to obtain the inner layer material.

[0106] ③Place the particles of the outer layer material and the inner layer material according to Figure 1The structure is blow-molded by a multi-layer blow molding machine. The temperature of the blow molding equipment is divided into three sections, the first section is 170°C ~ 195°C, the second section is 190°C ~ 205°C, and the third section is 200°C ~ 180°C, to obtain a high-performance floating material for photovoltaics.

[0107] The prepared products were subjected to various performance tests:

[0108] Density test: carried out in accordance with the provisions of GB / T 1033.1.

[0109] Using method A (immersion method), the sample mass is greater than 1g, and the immersion liquid is anhydrous ethanol (density 0.7893g / cm 3 ), the density of the material being tested is read out by a density meter.

[0110] Tensile strength test: carried out in accordance with the provisions of GB / T 1040-2006.

[0111] The specimen is type 5, and the test speed is 50 mm / min.

[0112] Hardness test: carried out in accordance with the provisions of GB / T 531-2008.

[0113] Impact resistance test: According to GB / T 1043.1-2008, type A notch.

[0114] Heat deformation temperature: According to the provisions of GB / T 1634.2-2004, sample specifications: 80mm×10mm×4mm, flat, using method B.

[0115] The test results are shown in Table 2 below.

[0116] Table 2

[0117]

[0118] The experimental results show that the comprehensive performance of the material is improved through double-layer blow molding. When the fiber-reinforced material in the inner layer is increased, the tensile strength, hardness and impact resistance of the double-layer material are all improved; with the increase of inorganic filler material, the density of the material gradually increases, and the tensile strength also gradually increases. When the inorganic filler increases to 20%, the tensile properties of the material reach the optimal level; the addition of modified PP can significantly improve the heat resistance of the material.

[0119] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A high-performance floating material for photovoltaics, characterized in that: It is composed of an outer layer material and an inner layer material; the outer layer material is a high-density polyethylene resin material; The inner layer material is prepared from raw materials including the following components: 40 parts by weight of PP resin; 10 to 15 parts by weight of POE resin; Modified PP 20 to 40 parts by weight; 0.01 to 0.05 parts by weight of antioxidant; 1 to 2 parts by weight of coupling agent; 10 to 20 parts by weight of inorganic filler; 1 to 10 parts by weight of fiber reinforcement material.

2. The high-performance floating material for photovoltaic use according to claim 1, characterized in that: The high-density polyethylene resin material is prepared from raw materials including the following components: 90 parts by weight of high density polyethylene; 0.01 to 0.1 parts by weight of antioxidant; Light stabilizer 0.005 to 0.015 parts by weight; 5 to 15 parts by weight of carbon black; 0.01 to 0.03 parts by weight of light absorber 3. The high-performance floating material for photovoltaic use according to claim 2, characterized in that: The preparation method of the high-density polyethylene resin material is specifically as follows: The antioxidant, light stabilizer, carbon black, light absorber and high-density polyethylene are physically blended to obtain a mixture; the mixture is then added into a screw extrusion device for extrusion granulation to obtain a high-density polyethylene resin material.

4. The high-performance floating material for photovoltaic use according to claim 1, characterized in that: The POE resin is one or more polymers of ethylene and butene.

5. The high-performance floating material for photovoltaic use according to claim 1, characterized in that: The modified PP is acrylic acid grafted polypropylene.

6. The high-performance floating material for photovoltaic use according to claim 1, characterized in that: The antioxidant is composed of a primary antioxidant and a secondary antioxidant in a mass ratio of 1:(1-2); the primary antioxidant is selected from antioxidant 1076 and / or antioxidant 330; the secondary antioxidant is selected from triphosphite and / or distearyl diphosphite.

7. The high-performance floating material for photovoltaic use according to claim 1, characterized in that: The coupling agent is selected from silane coupling agent and / or titanate coupling agent.

8. The high-performance floating material for photovoltaic use according to claim 1, characterized in that: The inorganic filling material is selected from one or more of calcium carbonate, titanium dioxide, and fly ash; the mesh size of the inorganic filling material is 2000 mesh to 3000 mesh.

9. The high-performance floating material for photovoltaic use according to claim 1, characterized in that: The fiber reinforcement material is selected from one or more of bamboo fiber, glass fiber and basalt fiber.

10. A method for preparing a high-performance floating material for photovoltaic use according to any one of claims 1 to 9, characterized in that: The following steps are involved: a) Mixing PP resin, POE resin, modified PP, antioxidant, coupling agent, inorganic filler and fiber reinforcement material at a speed of 150 r / min to 350 r / min for 10 min to 30 min to obtain a mixture; b) adding the mixed material obtained in step a) into a twin-screw extruder for granulation, wherein the temperature of the first section of the twin-screw is 140°C to 160°C, the temperature of the second section is 160°C to 180°C, the temperature of the third section is 175°C to 185°C, and the temperature of the fourth section is 170°C to 190°C, to obtain an inner layer material; c) Blow molding the inner layer material and the outer layer material obtained in step b) at three temperatures, the first stage is 170°C to 195°C, the second stage is 190°C to 205°C, and the third stage is 200°C to 180°C, to obtain a high-performance floating material for photovoltaics.

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