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High-impact flame-retardant polypropylene composite material for passenger car interior decoration and preparation method of high-impact flame-retardant polypropylene composite material

A technology of flame-retardant polypropylene and composite materials, which is applied in the field of high-impact flame-retardant polypropylene composite materials for passenger car interiors and its preparation, and can solve the problems of failing to meet the smoke density index of passenger car interior materials, difficult to self-extinguish, and a large number of black smoke and other issues

Inactive Publication Date: 2021-04-09
SHANGHAI PRET COMPOSITES +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the hydrocarbon chemical structure of PP also has its own unavoidable characteristic defects, that is, it is easy to ignite and difficult to self-extinguish. Its flame-retardant modification is the most difficult type of material to develop in the current flame-retardant research of thermoplastic polymer composites.
Generally, bromine-antimony flame retardants can make PP reach V0 and have a high oxygen index, but there is a disadvantage that bromine-antimony is mainly used for gas-phase flame retardancy, and a large amount of black smoke is generated during combustion, which cannot meet the requirements of passenger car interior materials. Smoke Density Index

Method used

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  • High-impact flame-retardant polypropylene composite material for passenger car interior decoration and preparation method of high-impact flame-retardant polypropylene composite material
  • High-impact flame-retardant polypropylene composite material for passenger car interior decoration and preparation method of high-impact flame-retardant polypropylene composite material
  • High-impact flame-retardant polypropylene composite material for passenger car interior decoration and preparation method of high-impact flame-retardant polypropylene composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Each raw material was weighed according to the weight percentage of Example 1 described in Table 1, stirred in a high-speed mixer for 3-5 minutes, and dried in an oven to obtain a mixed raw material.

[0041] The mixed raw materials are evenly added to the intermeshing co-rotating twin-screw extruder, and after a series of processes such as melt extrusion, granulation, and drying treatment, the high-impact flame-retardant polypropylene composite material for passenger car interiors is obtained, wherein , the extruder screw diameter is 35mm, the length-to-diameter ratio L / D is 40, the screw speed is 200-300rpm / min, and the temperature of each section of the extruder is between 180-210°C.

[0042] Table 1 Formula table of high-impact flame-retardant polypropylene composite materials for passenger car interior (unit: %)

[0043]

Embodiment 2

[0045] Each raw material was weighed according to the weight percentage of Example 2 described in Table 1, stirred in a high-speed mixer for 3-5 minutes, and dried in an oven to obtain a mixed raw material.

[0046] The mixed raw materials are evenly added to the intermeshing co-rotating twin-screw extruder, and after a series of processes such as melt extrusion, granulation, and drying treatment, the high-impact flame-retardant polypropylene composite material for passenger car interiors is obtained, wherein , the extruder screw diameter is 35mm, the length-to-diameter ratio L / D is 40, the screw speed is 200-300rpm / min, and the temperature of each section of the extruder is between 180-210°C.

Embodiment 3

[0048] Each raw material was weighed according to the weight percentage of Example 3 described in Table 1, stirred in a high-speed mixer for 3-5 minutes, and dried in an oven to obtain a mixed raw material.

[0049] The mixed raw materials are evenly added to the intermeshing co-rotating twin-screw extruder, and after a series of processes such as melt extrusion, granulation, and drying treatment, the high-impact flame-retardant polypropylene composite material for passenger car interiors is obtained, wherein , the extruder screw diameter is 35mm, the length-to-diameter ratio L / D is 40, the screw speed is 200-300rpm / min, and the temperature of each section of the extruder is between 180-210°C.

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PUM

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Abstract

The invention belongs to the technical field of polymer flame retardance, and particularly relates to a high-impact flame-retardant polypropylene composite material for passenger car interior decoration and a preparation method of the high-impact flame-retardant polypropylene composite material. The high-impact flame-retardant polypropylene composite material is specifically prepared from the following raw materials in parts by weight: 40-70 parts of polypropylene, 5-20 parts of bromine-containing flame retardant, 1-5 parts of antimony trioxide, 5-20 parts of halogen-free intumescent flame retardant, 0.5-5 parts of aerogel powder, 0-15 parts of flexibilizer. and 0-40 parts of an inorganic filler. The flame-retardant polypropylene composite material obtained by the technical scheme of the invention has excellent mechanical properties, and the toughening agent is added, so that the material has excellent impact resistance, and can be used for parts such as instrument boards, stand columns and the like which need to be blasted; by adopting the nanoscale SiO2 aerogel, smoke in the combustion process of the composite material can be adsorbed, SiO2 can also play a role of a flame-retardant synergist and catalyze charring, the oxygen index and smoke density of flame-retardant polypropylene are synergistically improved, and the flame-retardant polypropylene can be used for passenger car interior materials.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to a high-impact flame-retardant polypropylene composite material for passenger car interior decoration and a preparation method thereof. Background technique [0002] In recent years, fire accidents of large-scale commercial passenger cars have occurred frequently, which has brought great losses to the lives and properties of passengers. In the investigation of fire accidents, it was found that polymer decorative materials greatly contributed to the spread of fire. Polymer materials In the event of a fire, it is easy to burn quickly and release toxic and suffocating gases, which aggravates the casualties and property losses of the passengers. Therefore, it is particularly necessary to flame-retardant passenger car interior materials. Unlike conventional flame-retardant materials, passenger car interiors not only require materials to have certain flame-retardan...

Claims

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Application Information

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IPC IPC(8): C08L23/14C08L23/08C08K3/22C08K5/03C08K7/26C08K3/34C08K13/04
CPCC08L23/14C08L2201/02C08L2205/02C08K2201/011
Inventor 赵卫哲张杨蔡青张千惠周文
Owner SHANGHAI PRET COMPOSITES
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