Silver spraying-free polypropylene alloy for lower bumper guard plate and preparation method of alloy

A polypropylene and bumper technology, which is applied in the field of polypropylene, can solve problems such as increased costs, and achieve the effects of reducing flow marks, ensuring light reflectivity, and good overall performance

Inactive Publication Date: 2019-07-30
HEFEI GENIUS NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the price of metal powder or pearl powder on the market is relatively high, and such a high amount of addition will inevitably lead to an increase in cost and thus affect its use and promotion. Therefore, it is necessary to develop a low-cost metal or pearl effect spray-free polypropylene alloy

Method used

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  • Silver spraying-free polypropylene alloy for lower bumper guard plate and preparation method of alloy
  • Silver spraying-free polypropylene alloy for lower bumper guard plate and preparation method of alloy
  • Silver spraying-free polypropylene alloy for lower bumper guard plate and preparation method of alloy

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] 48 parts of copolymerized polypropylene, 12 parts of low density polyethylene, 30 parts of inorganic filler, 10 parts of toughening agent, 0.2 parts of antioxidant 1010, 0.5 parts of silane coupling agent KH550, 0.2 parts of light stabilizer UV-531, 0.2 parts 1 part of lubricant, 1 part of metal powder, add to the high mixer and mix for 5 minutes;

[0035] The mixed blend is extruded and granulated by a twin-screw extruder. The temperature of each zone of the extruder is 150°C, 170°C, 175°C, 175°C, 175°C, 180°C from the feeding section to the head temperature. °C, 180 °C, 180 °C, 180 °C, 185 °C, the length-to-diameter ratio of the extrusion screw is 44, and the rotation speed of the extrusion screw is 350 rpm. The prepared mixture was tested for performance, and the test results are shown in Table 1.

Embodiment 2

[0037] 57 parts of copolymerized polypropylene, 10 parts of low density polyethylene, 25 parts of inorganic fillers, 8 parts of toughening agent, 0.3 parts of antioxidant 168, 0.2 parts of antioxidant 1010, 0.3 parts of antioxidant DSTDP, 0.4 parts of silane Joint agent KH550, 0.3 parts of light stabilizer UV-531, 0.3 parts of lubricant, 1.2 parts of metal powder, add to the high mixer and mix for 10 minutes;

[0038] The mixed blend is extruded and granulated through a twin-screw extruder. The temperature of each zone of the extruder is 170°C, 185°C, 185°C, 185°C, 185°C, 190°C from the feeding section to the head temperature. °C, 195 °C, 195 °C, 195 °C, 200 °C, the length-to-diameter ratio of the extrusion screw is 44, and the rotation speed of the extrusion screw is 350 rpm. The prepared mixture was tested for performance, and the test results are shown in Table 1.

Embodiment 3

[0040] 62 parts of copolymerized polypropylene, 10 parts of low density polyethylene, 20 parts of inorganic fillers, 8 parts of toughening agent, 0.2 parts of antioxidant 168, 0.3 parts of antioxidant 1010, 0.3 parts of silane coupling agent KH550, 0.2 parts of light Stabilizer UV-531, 0.2 parts of light stabilizer TH-944, 0.4 parts of lubricant, 1.5 parts of metal powder, add to the high mixer and mix for 15 minutes;

[0041]The mixed blend is extruded and granulated by a twin-screw extruder. The temperature of each zone of the extruder is 150°C, 170°C, 175°C, 175°C, 175°C, 180°C from the feeding section to the head temperature. °C, 180 °C, 180 °C, 180 °C, 195 °C, the length-to-diameter ratio of the extrusion screw is 48, and the rotation speed of the extrusion screw is 350 rpm. The prepared mixture was tested for performance, and the test results are shown in Table 1.

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Abstract

The invention discloses a silver spraying-free polypropylene alloy for a lower bumper guard plate and a preparation method of the alloy. The alloy is prepared by mixing 48-72 parts of polypropylene, 8-12 parts of polyethylene, 15-30 parts of an inorganic filler, 5-10 parts of a toughening agent, 0.2-0.8 part of an antioxidant, 0.2-0.5 part of a light stabilizer, 1-3 parts of metal powder, 0.2-0.5part of a coupling agent and 0.2-1 part of a lubricant and then extruding the mixture for granulating. The polypropylene alloy prepared by means of the method can be matched with a high-gloss mirror surface mold to obtain high gloss and a great appearance with a metal effect without spraying and direct injection molding. Compared with a paint spraying process, the method has the advantages that the cost is greatly reduced, and scrapping caused by a paint shedding problem in a use process of a product is avoided at the same time; a preparation process is simple, and the obtained polypropylene alloy has great comprehensive performance and completely meets the performance requirements of bumpers for materials; meanwhile, a finished product has an obvious metal effect and can be used as a lower bumper guard plate material in cooperation with the high-gloss mold for injection molding.

Description

technical field [0001] The invention relates to the technical field of polypropylene, in particular to a silver spray-free polypropylene alloy for a bumper lower guard plate and a preparation method thereof. Background technique [0002] In recent years, the automobile industry has developed rapidly, especially the output and social ownership of cars have maintained a relatively high growth rate. Plastics for automobiles play an irreplaceable role in satisfying aesthetics, safety, and lightweight. At the same time, new technologies for automobiles are also It is developing towards a more environmentally friendly, safer, more comfortable and personalized direction. Among the varieties of plastics used in automobiles, modified polypropylene materials have become the most used variety in plastic materials used in automobiles, and are also the focus of the development and application of plastics used in automobiles. Polypropylene material has a wide range of sources, low densit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/14C08L23/12C08L23/06C08L23/08C08L51/08C08K13/02C08K3/08
CPCC08L23/14C08L2205/035C08L2205/025C08L2207/066C08K2003/0812C08K2201/003B29C2948/92704B29C48/92C08L23/06C08L23/0815C08L51/08C08K13/02C08K3/08C08L23/12
Inventor 杨桂生廖雄兵朱敏
Owner HEFEI GENIUS NEW MATERIALS
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