Preparation method of high-toughness impact automotive upholstery

Abstract

The invention discloses a high-toughness impact automobile interior trim part which is prepared from the following raw materials in parts by weight: 60-70 parts of polypropylene, 40-60 parts of PBT (Polybutylene Terephthalate) resin, 8-12 parts of inorganic filler, 5-15 parts of a toughening agent, 8-12 parts of a framework, 0.1-2 parts of an ultraviolet light absorber, 0.5-3 parts of an anti-formaldehyde coating, 1.5-2.0 parts of a weather-resistant additive, 1.5-2.0 parts of a wear-resistant additive, 0.2-1.0 part of an antioxidant, 0.02-0.05 part of a drier and 0.5-2.0 parts of an adsorbent. The automotive upholstery prepared by the preparation method has the advantages that the strength is high, the toughness is good, and a buckle of the automotive upholstery is not easy to break in the disassembly and repair process of the automotive upholstery.

Description

Technical Field

[0001] The invention relates to the technical field of automobile parts, and in particular to a method for preparing a high-toughness impact automobile interior decoration part. Background Art

[0002] With the rapid development of the world economy and the continuous improvement of people's lives, the automobile industry has developed rapidly, and the production of cars has changed with each passing day, and the models have been constantly updated. Existing automobile interiors are mainly made of plastics and fabrics coated on the plastic surface. People's requirements for cars are not only beautiful appearance, but also pay more attention to the comfort, integrity and functionality of the interior decoration. Plastics are required to have not only the characteristics of light weight, heat insulation, sound absorption, shock resistance, flame retardancy, beauty and practicality, but also some functional parts such as CD boxes, instrument boxes, etc. The structural door panel materials and other structural interior materials have the following requirements: (1) Have a certain impact resistance, even when the car is driving at high speed or a collision occurs, the mechanical and instrument performance of its functional parts can still maintain normal operation.

[0003] During repeated installation and disassembly of automotive interior parts, the buckles are constantly deformed, resulting in a decrease in toughness and even breakage. However, the buckles of automotive interior parts are required to be able to be disassembled four times without damage. The impact strength of existing automotive interior parts does not meet the requirements. Summary of the invention

[0004] The main purpose of the present invention is to provide a method for preparing a high-toughness impact automobile interior decoration part. The automobile interior decoration part prepared by the preparation method has the advantages of high strength and good toughness, and the buckles of the automobile interior decoration part are not easy to break during the disassembly and repair process of the automobile interior decoration part.

[0005] In order to solve the above technical problems, the present invention discloses a high-toughness impact automobile interior decoration part, comprising: the raw materials measured by weight: 60-70 parts of polypropylene, 40-60 parts of PBT resin, 8-12 parts of inorganic filler, 5-15 parts of toughening agent, 8-12 parts of skeleton, 0.1-2 parts of ultraviolet absorber, 0.5-3 parts of anti-formaldehyde coating, 1.5-2.0 parts of weathering agent, 1.5-2.0 parts of wear-resistant agent, 0.2-1.0 parts of antioxidant, 0.02-0.05 parts of drying agent, and 0.5-2.0 parts of adsorbent.

[0006] The invention comprises the following raw materials in parts by weight: 60 parts of polypropylene, 40 parts of PBT resin, 8 parts of inorganic filler, 5 parts of toughening agent, 8 parts of skeleton, 0.1 parts of ultraviolet absorber, 0.5 parts of anti-formaldehyde coating, 1.5 parts of weathering agent, 1.5 parts of wear-resistant agent, 0.2 parts of antioxidant, 0.02 parts of drying agent and 0.5 parts of adsorbent.

[0007] According to one embodiment of the present invention, the above-mentioned raw materials in parts by weight are made up of: 70 parts of polypropylene, 60 parts of PBT resin, 12 parts of inorganic filler, 15 parts of toughening agent, 12 parts of skeleton, 2 parts of ultraviolet absorber, 3 parts of anti-formaldehyde coating, 2.0 parts of weathering agent, 2.0 parts of wear-resistant agent, 1.0 parts of antioxidant, 0.05 parts of drying agent, and 2.0 parts of adsorbent.

[0008] According to one embodiment of the present invention, the above-mentioned raw materials in parts by weight are made up of: 65 parts of polypropylene, 50 parts of PBT resin, 10 parts of inorganic filler, 10 parts of toughening agent, 10 parts of skeleton, 0.15 parts of ultraviolet absorber, 2 parts of anti-formaldehyde coating, 1.8 parts of weathering agent, 1.8 parts of wear-resistant agent, 0.7 parts of antioxidant, 0.03 parts of drying agent, and 1.5 parts of adsorbent.

[0009] According to one embodiment of the present invention, the preparation method of the above-mentioned high-toughness impact automotive interior parts includes the following steps: step (1): preparing the following raw materials by weight: polypropylene, PBT resin, inorganic filler, toughening agent, skeleton, ultraviolet absorber, anti-formaldehyde coating, weathering agent, wear-resistant agent, antioxidant, drying agent, and adsorbent, and mixing them to obtain a mixture; step (1): adding the mixture to a screw extruder and granulating it by melt extrusion; step (2): selecting a skeleton and welding the skeleton according to the shape of the manufactured interior parts to form a preliminary interior injection mold; step (3): drying the granules obtained by the screw extruder, preheating the injection mold to 230-240°C and then performing injection molding, controlling the temperature of the interior injection mold to 60-80°C, the melt temperature to 250-260°C, the barrel temperature to 210°C, and the injection pressure to 100-140MPa during injection molding, and cooling and molding after the injection molding is completed.

[0010] According to one embodiment of the present invention, in the above-mentioned melt extrusion granulation process in the screw extruder, the melting temperature is 210-220°C, the time of the entire extrusion process is 1-3 minutes, and the pressure is 12-18 MPa; in the process of drying the granules, the drying temperature is 85-90°C, and the drying time is 2-3h.

[0011] Compared with the prior art, the present application can obtain the following technical effects: 1) The automobile interior decoration part prepared by the preparation method has the advantages of high strength and good toughness, and the buckle of the automobile interior decoration part is not easy to break during the disassembly and repair process of the automobile interior decoration part.

[0012] 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

[0013] 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.

[0014] A high-toughness impact automobile interior decoration part comprises: various raw materials measured by weight: 60-70 parts of polypropylene, 40-60 parts of PBT resin, 8-12 parts of inorganic filler, 5-15 parts of toughening agent, 8-12 parts of skeleton, 0.1-2 parts of ultraviolet absorber, 0.5-3 parts of anti-formaldehyde coating, 1.5-2.0 parts of weathering agent, 1.5-2.0 parts of wear-resistant agent, 0.2-1.0 parts of antioxidant, 0.02-0.05 parts of drying agent and 0.5-2.0 parts of adsorbent.

[0015] According to the method of the present invention described above, an experiment was conducted.

[0016] Test 1, made of the following raw materials in parts by weight: 60 parts of polypropylene, 40 parts of PBT resin, 8 parts of inorganic filler, 5 parts of toughening agent, 8 parts of skeleton, 0.1 parts of UV absorber, 0.5 parts of anti-formaldehyde coating, 1.5 parts of weathering agent, 1.5 parts of wear-resistant agent, 0.2 parts of antioxidant, 0.02 parts of drying agent, and 0.5 parts of adsorbent.

[0017] Test 2, made from the following raw materials in parts by weight: 70 parts of polypropylene, 60 parts of PBT resin, 12 parts of inorganic filler, 15 parts of toughening agent, 12 parts of skeleton, 2 parts of UV absorber, 3 parts of anti-formaldehyde coating, 2.0 parts of weathering agent, 2.0 parts of wear-resistant agent, 1.0 parts of antioxidant, 0.05 parts of drying agent, and 2.0 parts of adsorbent.

[0018] Test 3, made from the following raw materials in parts by weight: 65 parts of polypropylene, 50 parts of PBT resin, 10 parts of inorganic filler, 10 parts of toughening agent, 10 parts of skeleton, 0.15 parts of UV absorber, 2 parts of anti-formaldehyde coating, 1.8 parts of weathering agent, 1.8 parts of wear-resistant agent, 0.7 parts of antioxidant, 0.03 parts of drying agent, and 1.5 parts of adsorbent.

[0019] In summary, the automotive interior parts made with the formula obtained in Experiment 2 have the highest strength and the best toughness.

[0020] A method for preparing a high-toughness impact automobile interior decoration part: step (1): preparing the following raw materials by weight: polypropylene, PBT resin, inorganic filler, toughening agent, skeleton, ultraviolet absorber, anti-formaldehyde coating, weathering agent, wear-resistant agent, antioxidant, drying agent, adsorbent, and mixing to obtain a mixture; step (1): adding the mixture to a screw extruder and granulating it by melt extrusion; in the process of melt extrusion granulation in the screw extruder, the melting temperature is 210-220°C, the time of the whole extrusion process is 1-3 minutes, and the pressure is 12-18MPa; drying the granules During the treatment process, the drying temperature is 85-90°C and the drying time is 2-3h; step (2): select a skeleton and weld the skeleton according to the shape of the manufactured interior decoration part to form a preliminary interior decoration injection mold; step (3): dry the granules obtained by the screw extruder, preheat the injection mold to 230-240°C and then perform injection molding. During injection molding, the temperature of the interior decoration injection mold is controlled to be 60-80°C, the melt temperature is 250-260°C, the barrel temperature is 210°C, and the injection pressure is 100-140MPa. After the injection molding is completed, cool and mold.

[0021] The automobile interior decoration part prepared by the preparation method has the advantages of high strength and good toughness, and the buckle of the automobile interior decoration part is not easy to break during the disassembly and repair process of the automobile interior decoration part.

[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 high-toughness impact automotive interior component, characterized in that: include: The raw materials measured by weight are: 60-70 parts of polypropylene, 40-60 parts of PBT resin, 8-12 parts of inorganic filler, 5-15 parts of toughening agent, 8-12 parts of skeleton, 0.1-2 parts of ultraviolet absorber, 0.5-3 parts of anti-formaldehyde coating, 1.5-2.0 parts of weathering agent, 1.5-2.0 parts of wear-resistant agent, 0.2-1.0 parts of antioxidant, 0.02-0.05 parts of drying agent and 0.5-2.0 parts of adsorbent.

2. The high-toughness impact automobile interior decoration part according to claim 1, characterized in that: include: The raw materials measured in parts by weight are: 60 parts of the polypropylene, 40 parts of the PBT resin, 8 parts of the inorganic filler, 5 parts of the toughening agent, 8 parts of the skeleton, 0.1 parts of the ultraviolet absorber, 0.5 parts of the anti-formaldehyde coating, 1.5 parts of the weathering additive, 1.5 parts of the wear-resistant additive, 0.2 parts of the antioxidant, 0.02 parts of the drying agent, and 0.5 parts of the adsorbent.

3. The high-toughness impact automobile interior decoration part according to claim 1, characterized in that: include: The raw materials measured in parts by weight are: 70 parts of the polypropylene, 60 parts of the PBT resin, 12 parts of the inorganic filler, 15 parts of the toughening agent, 12 parts of the skeleton, 2 parts of the ultraviolet absorber, 3 parts of the anti-formaldehyde coating, 2.0 parts of the weathering agent, 2.0 parts of the wear-resistant agent, 1.0 parts of the antioxidant, 0.05 parts of the drying agent, and 2.0 parts of the adsorbent.

4. The high-toughness impact automobile interior decoration part according to claim 1, characterized in that: The raw materials measured in parts by weight are: 65 parts of the polypropylene, 50 parts of the PBT resin, 10 parts of the inorganic filler, 10 parts of the toughening agent, 10 parts of the skeleton, 0.15 parts of the ultraviolet absorber, 2 parts of the anti-formaldehyde coating, 1.8 parts of the weathering agent, 1.8 parts of the wear-resistant agent, 0.7 parts of the antioxidant, 0.03 parts of the drying agent, and 1.5 parts of the adsorbent.

5. A method for preparing a high-toughness impact automotive interior decoration part according to claim 1-4: step (1): preparing the following raw materials by weight: the polypropylene, the PBT resin, the inorganic filler, the toughening agent, the skeleton, the ultraviolet absorber, the anti-formaldehyde coating, the weathering agent, the wear-resistant agent, the antioxidant, the drying agent, and the adsorbent, and mixing them to obtain a mixture; step (1): adding the mixture to a screw extruder and granulating it by melt extrusion; step (2): selecting a skeleton and welding the skeleton according to the shape of the manufactured interior decoration part to form a preliminary interior decoration injection mold; step (3): drying the granules obtained by the screw extruder, preheating the injection mold to 230-240°C and then performing injection molding, controlling the temperature of the interior decoration injection mold to 60-80°C, the melt temperature to 250-260°C, the barrel temperature to 210°C, and the injection pressure to 100-140MPa during injection molding, and cooling and molding after the injection molding is completed.

6. The method for preparing the high-toughness impact automobile interior decoration parts according to claims 1-4, characterized in that: During the melt extrusion granulation process in the screw extruder, the melting temperature is 210-220° C., the time of the entire extrusion process is 1-3 minutes, and the pressure is 12-18 MPa; during the drying process of the granulation, the drying temperature is 85-90° C., and the drying time is 2-3 hours.