Preparation method of novel wear-resistant automobile door panel

Abstract

The invention discloses a novel wear-resistant automobile door panel. The automobile door panel is prepared from the following raw materials in parts by weight: 70-80 parts of polypropylene; 10 to 30 parts of titanate; 50 to 60 parts of CPP; 25 to 45 parts of talcum powder; 5 to 25 parts of POE; 1-5 parts of calcium stearate; 1-20 parts of a coupling agent; 0.1 to 0.5 part of titanium dioxide; 30 to 50 parts of wollastonite; 0.2 to 0.8 part of UV-327 (Ultraviolet to 327); 1-5 parts of an antioxidant; 1.5 to 5.5 parts of sodium benzoate; 8-12 parts of a mineral enhancer; 0.3 to 0.7 part of DMTP (Dimethyl Titanium 15 to 35 parts of EPDM and 10 to 35 parts of a filling agent. Compared with the prior art, the manufacturing process has the advantages that the scratch resistance of the material for the automobile inner door plate is remarkably improved, the bending strength, the tensile strength and the elongation at break are improved, and the material is easy to peel.

Description

Technical Field

[0001] The invention relates to the technical field of automobile parts, and in particular to a preparation method of a novel wear-resistant automobile door panel. Background Art

[0002] The car inner door panel is an important part of the car interior. The existing car inner door panel materials include ABS, PVC artificial leather, PVC needle foam leather, waterproof fiberboard, lightweight PP board, etc. Among them, the lightweight PP board is a low-pressure, thermoformable thermoplastic sheet, which has the advantages of light weight, good air permeability, good sound insulation, low equipment cost and easy installation. However, the existing polypropylene material of the car inner door panel is relatively not hard. During the user's use, it is easy to be kicked, scratched or rubbed to leave white marks, and its scratch resistance is poor. Summary of the invention

[0003] The main purpose of the present invention is to provide a method for preparing a new type of wear-resistant automobile door panel. Through the above-mentioned production process, compared with the existing technology, the scratch resistance of the material for the automobile inner door panel is significantly improved, the bending strength, tensile strength and elongation at break are improved, and it is easy to peel off.

[0004] In order to solve the above technical problems, the present invention discloses a novel wear-resistant automobile door panel, which is characterized in that it comprises: the raw materials of the automobile door panel are proportioned as follows by weight: 70-80 parts of polypropylene; 10-30 parts of titanate; 50-60 parts of CPP; 25-45 parts of talc; 5-25 parts of POE; 1-5 parts of calcium stearate; 1-20 parts of coupling agent; 0.1-0.5 parts of titanium dioxide; 30-50 parts of wollastonite; 0.2-0.8 parts of UV-327; 1-5 parts of antioxidant; 1.5-5.5 parts of sodium benzoate; 8-12 parts of mineral reinforcing agent; 0.3-0.7 parts of DMTP; 15-35 parts of EPDM, and 10-35 parts of filler.

[0005] According to one embodiment of the present invention, the raw materials of the above-mentioned automobile door panel are proportioned as follows by weight: 70 parts of polypropylene; 100 parts of titanate; 50 parts of CPP; 25 parts of talc; 5 parts of POE; 1 part of calcium stearate; 1 part of coupling agent; 0.1 part of titanium dioxide; 30 parts of wollastonite; 0.2 parts of UV-327; 1 part of antioxidant; 1.5 parts of sodium benzoate; 8 parts of mineral enhancer; 0.3 parts of DMTP; and 10 parts of filler.

[0006] According to one embodiment of the present invention, the raw materials of the above-mentioned automobile door panel are proportioned as follows by weight: 70-80 parts of polypropylene; 10-30 parts of titanate; 55 parts of CPP; 30 parts of talc; 15 parts of POE; 3 parts of calcium stearate; 10 parts of coupling agent; 0.3 parts of titanium dioxide; 40 parts of wollastonite; 0.5 parts of UV-327; 3 parts of antioxidant; 4 parts of sodium benzoate; 10 parts of mineral enhancer; 0.4 parts of DMTP; 20 parts of EPDM, and 20 parts of filler.

[0007] According to one embodiment of the present invention, the raw materials of the above-mentioned automobile door panel are proportioned as follows by weight: 80 parts of polypropylene; 30 parts of titanate; 60 parts of CPP; 45 parts of talc; 25 parts of POE; 5 parts of calcium stearate; 20 parts of coupling agent; 0.5 parts of titanium dioxide; 50 parts of wollastonite; 0.8 parts of UV-327; 5 parts of antioxidant; 5.5 parts of sodium benzoate; 12 parts of mineral enhancer; 0.7 parts of DMTP; 35 parts of EPDM, and 35 parts of filler.

[0008] According to one embodiment of the present invention, the method for preparing the above-mentioned automobile door panel is characterized in that it comprises the following steps: step (1) weighing polypropylene; titanate; CPP; talcum powder; POE; calcium stearate; coupling agent; titanium dioxide; wollastonite; UV-327; antioxidant; sodium benzoate; mineral reinforcing agent; DMTP; EPDM, and filler according to the weight ratio. Step (2): polypropylene, titanate, CPP, talc, POE, calcium stearate and coupling agent are placed in a reaction kettle and heated to 70-90°C, stirred for 20-35 minutes, and then the remaining raw materials are added, the temperature is raised to 90-100°C, and stirred for 40-50 minutes; Step (3): the mixed materials are placed in an extruder for extrusion, the barrel temperature is 185°C, 190°C, 200°C, 210°C, 220°C, 230°C and 240°C, and the head temperature is 200-215°C; Step 4: compression molding, the mold temperature is 200-220°C, the molding is performed for 3-5 minutes, the plasticizing is performed for 5-10 minutes, and the vacuum molding is performed into the shape of a car door; Step (4): after cleaning the surface of the compression molded car door panel, the surface is polished with sandpaper, and then the surface is sprayed with a modifying liquid and naturally dried.

[0009] According to one embodiment of the present invention, the above-mentioned modifying liquid is Tegomer V-Si 4042.

[0010] Compared with the prior art, the present application can obtain the following technical effects: 1) Through the above-mentioned manufacturing process, compared with the existing technology, the scratch resistance of the material for the automobile inner door panel is significantly improved, the bending strength, tensile strength and elongation at break are improved, and it is easy to peel.

[0011] Of course, any product implementing the present invention does not necessarily need to achieve all of the above technical effects at the same time. DETAILED DESCRIPTION

[0012] The following will explain the implementation methods of the present application in detail with reference to examples, so that the implementation process of how the present application uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

[0013] A novel wear-resistant automobile door panel, characterized in that it comprises: the raw materials of the automobile door panel are proportioned as follows by weight: 70-80 parts of polypropylene; 10-30 parts of titanate; 50-60 parts of CPP; 25-45 parts of talc; 5-25 parts of POE; 1-5 parts of calcium stearate; 1-20 parts of coupling agent; 0.1-0.5 parts of titanium dioxide; 30-50 parts of wollastonite; 0.2-0.8 parts of UV-327; 1-5 parts of antioxidant; 1.5-5.5 parts of sodium benzoate; 8-12 parts of mineral reinforcing agent; 0.3-0.7 parts of DMTP; 15-35 parts of EPDM, and 10-35 parts of filler.

[0014] According to the method of the present invention described above, an experiment was conducted.

[0015] Test 1. The raw materials of the automobile door panel are proportioned by weight as follows: 70 parts of polypropylene; 100 parts of titanate; 50 parts of CPP; 25 parts of talc; 5 parts of POE; 1 part of calcium stearate; 1 part of coupling agent; 0.1 part of titanium dioxide; 30 parts of wollastonite; 0.2 parts of UV-327; 1 part of antioxidant; 1.5 parts of sodium benzoate; 8 parts of mineral enhancer; 0.3 parts of DMTP; 10 parts of filler.

[0016] Test 2: The raw materials of the automobile door panel are proportioned by weight as follows: 70-80 parts of polypropylene; 10-30 parts of titanate; 55 parts of CPP; 30 parts of talc; 15 parts of POE; 3 parts of calcium stearate; 10 parts of coupling agent; 0.3 parts of titanium dioxide; 40 parts of wollastonite; 0.5 parts of UV-327; 3 parts of antioxidant; 4 parts of sodium benzoate; 10 parts of mineral enhancer; 0.4 parts of DMTP; 20 parts of EPDM and 20 parts of filler.

[0017] Test 3. The raw materials of the automobile door panel are proportioned by weight as follows: 80 parts of polypropylene; 30 parts of titanate; 60 parts of CPP; 45 parts of talc; 25 parts of POE; 5 parts of calcium stearate; 20 parts of coupling agent; 0.5 parts of titanium dioxide; 50 parts of wollastonite; 0.8 parts of UV-327; 5 parts of antioxidant; 5.5 parts of sodium benzoate; 12 parts of mineral enhancer; 0.7 parts of DMTP; 35 parts of EPDM and 35 parts of filler.

[0018] According to tests 1-3, the door panel prepared in test 2 has better bending strength, tensile strength and elongation at break, and is easy to peel off.

[0019] A method for preparing an automobile door panel comprises the following steps: step (1) weighing polypropylene, titanate, CPP, talcum powder, POE, calcium stearate, coupling agent, titanium dioxide, wollastonite, UV-327, antioxidant, sodium benzoate, mineral reinforcing agent, DMTP, EPDM, and filler according to weight ratio. Step (2): polypropylene, titanate, CPP, talc, POE, calcium stearate and coupling agent are placed in a reaction kettle and heated to 70-90°C, stirred for 20-35 minutes, and then the remaining raw materials are added, the temperature is raised to 90-100°C, and stirred for 40-50 minutes; Step (3): the mixed materials are placed in an extruder for extrusion, the barrel temperature is 185°C, 190°C, 200°C, 210°C, 220°C, 230°C and 240°C, and the head temperature is 200-215°C; Step 4: compression molding, the mold temperature is 200-220°C, the molding is performed for 3-5 minutes, the plasticizing is performed for 5-10 minutes, and the vacuum molding is performed into the shape of a car door; Step (4): after cleaning the surface of the compression molded car door panel, the surface is polished with sandpaper, and then the surface is sprayed with a modifying liquid and naturally dried.

[0020] The preferred modified liquid is Tegomer V-Si 4042, and the door panel obtained has better wear resistance.

[0021] Through the above-mentioned manufacturing process, compared with the prior art, the scratch resistance of the material for the automobile inner door panel is significantly improved, the bending strength, tensile strength and elongation at break are improved, and it is easy to peel off.

[0022] The above description shows and describes several preferred embodiments of the present application, but as before, it should be understood that the present application is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the present application through the above teachings or the technology or knowledge of the relevant field. The changes and modifications made by those skilled in the art shall not deviate from the spirit and scope of the present application, and shall be within the scope of protection of the claims attached to the present application.

Claims

1. A new type of wear-resistant automobile door panel, characterized in that: include: The raw materials of the automobile door panel are proportioned as follows by weight: 70-80 parts of polypropylene; 10-30 parts of titanate; 50-60 parts of CPP; 25-45 parts of talc; 5-25 parts of POE; 1-5 parts of calcium stearate; 1-20 parts of coupling agent; 0.1-0.5 parts of titanium dioxide; 30-50 parts of wollastonite; 0.2-0.8 parts of UV-327; 1-5 parts of antioxidant; 1.5-5.5 parts of sodium benzoate; 8-12 parts of mineral enhancer; 0.3-0.7 parts of DMTP; 15-35 parts of EPDM and 10-35 parts of filler.

2. The novel wear-resistant automobile door panel according to claim 1 is characterized in that: include: The raw materials of the automobile door panel are proportioned as follows by weight: 70 parts of polypropylene; 100 parts of titanate; 50 parts of CPP; 25 parts of talc; 5 parts of POE; 1 part of calcium stearate; 1 part of coupling agent; 0.1 part of titanium dioxide; 30 parts of wollastonite; 0.2 parts of UV-327; 1 part of antioxidant; 1.5 parts of sodium benzoate; 8 parts of mineral enhancer; 0.3 parts of DMTP; and 10 parts of filler.

3. The new wear-resistant automobile door according to claim 1 is characterized in that: The raw materials of automobile door panels are proportioned as follows by weight: 70-80 parts of polypropylene; 10-30 parts of titanate; 55 parts of CPP; 30 parts of talc; 15 parts of POE; 3 parts of calcium stearate; 10 parts of coupling agent; 0.3 parts of titanium dioxide; 40 parts of wollastonite; 0.5 parts of UV-327; 3 parts of antioxidant; 4 parts of sodium benzoate; 10 parts of mineral enhancer; 0.4 parts of DMTP; 20 parts of EPDM and 20 parts of filler.

4. The novel wear-resistant automobile door panel according to claim 1 is characterized in that: The raw materials of the automobile door panel are proportioned as follows by weight: 80 parts of polypropylene; 30 parts of titanate; 60 parts of CPP; 45 parts of talc; 25 parts of POE; 5 parts of calcium stearate; 20 parts of coupling agent; 0.5 parts of titanium dioxide; 50 parts of wollastonite; 0.8 parts of UV-327; 5 parts of antioxidant; 5.5 parts of sodium benzoate; 12 parts of mineral enhancer; 0.7 parts of DMTP; 35 parts of EPDM and 35 parts of filler.

5. A method for preparing the automobile door panel according to claim 1, characterized in that: The method comprises the following steps: step (1) weighing polypropylene, titanate, CPP, talc, POE, calcium stearate, coupling agent, titanium dioxide, wollastonite, UV-327, antioxidant, sodium benzoate, mineral reinforcing agent, DMTP, EPDM, and filler according to the weight ratio. Step (2) putting polypropylene, titanate, CPP, talc, POE, calcium stearate and coupling agent into a reaction kettle, heating to 70-90°C, stirring for 20-35 minutes, then adding the remaining raw materials, heating to 90-100°C, and stirring for 40-50 minutes; step (3): putting the mixed materials into an extruder for extrusion, with the barrel temperature at 185°C, 190°C, 200°C, 210°C, 220°C, 230°C and 240°C, and the die head temperature at 200-215°C; Step 4: compression molding, mold temperature 200-220°C, compression molding 3-5 minutes, plasticization 5-10 minutes, vacuum molding into the shape of a car door; Step (4) After cleaning the surface of the compression molded car door panel, the surface is polished with sandpaper, and then the surface is sprayed with a modifying liquid and dried naturally.

6. A method for preparing the automobile door panel according to claim 5, characterized in that: It includes the following: the modifying liquid is Tegomer V-Si 4042.