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CN-121991431-A - High-impact flame-retardant reinforced polypropylene composite material and preparation method thereof

CN121991431ACN 121991431 ACN121991431 ACN 121991431ACN-121991431-A

Abstract

The invention discloses a high-impact flame-retardant reinforced polypropylene composite material and a preparation method thereof, which belong to the technical field of high polymer materials, and comprise, by mass, 25-75 parts of polypropylene, 25-30 parts of halogen-free flame retardant, 5-25 parts of mineral filling powder, 2-6 parts of compatilizer, 1-10 parts of toughening agent, and further comprise a lubricant and an antioxidant.

Inventors

  • Mei Shuxiang
  • XU YUANYUAN

Assignees

  • 安庆会通新材料有限公司

Dates

Publication Date
20260508
Application Date
20260130

Claims (10)

  1. 1. The high impact flame retardant reinforced polypropylene composite material is characterized by comprising, by mass, 25-75 parts of polypropylene, 25-30 parts of halogen-free flame retardant, 5-25 parts of mineral filling powder, 2-6 parts of compatilizer and 1-10 parts of toughening agent.
  2. 2. The high impact flame retardant reinforced polypropylene composite of claim 1, wherein the polypropylene composite further comprises 0.5 parts of a lubricant and 0.5 parts of an antioxidant.
  3. 3. The high impact flame retardant reinforced polypropylene composite material according to claim 1, wherein the polypropylene has a melt index of 10-30 g/10min at 230 ℃ and 2.16 Kg.
  4. 4. The high impact flame retardant reinforced polypropylene composite material of claim 1, wherein the halogen-free flame retardant is a nitrogen-phosphorus flame retardant.
  5. 5. The high impact flame retardant reinforced polypropylene composite material according to claim 1, wherein the mineral filler powder is wollastonite having a diameter of 5-12 μm.
  6. 6. The high impact flame retardant reinforced polypropylene composite of claim 1, wherein said compatibilizer is a maleic anhydride grafted polypropylene.
  7. 7. The high impact flame retardant reinforced polypropylene composite material according to claim 1, wherein the toughening agent is any one of ethylene propylene diene monomer, ethylene-butene copolymer and ethylene-octene copolymer.
  8. 8. The high impact flame retardant reinforced polypropylene composite material according to claim 2, wherein the antioxidant is at least one of a hindered amine antioxidant, a hindered phenol antioxidant, a phosphite antioxidant, and a thioester antioxidant.
  9. 9. The high impact flame retardant reinforced polypropylene composite of claim 2, wherein said lubricant is at least one of EBS, EBH, TAF, PETS.
  10. 10. A method for preparing a polypropylene composite material according to any one of claims 1 to 9, comprising: fully mixing mineral filling powder, compatilizer and part of polypropylene, and then adding other raw materials for uniform mixing; and (3) feeding the mixed material into a screw extruder for melt extrusion and granulation to obtain the composite material.

Description

High-impact flame-retardant reinforced polypropylene composite material and preparation method thereof Technical Field The invention belongs to the technical field of high polymer materials, and particularly relates to a high-impact flame-retardant reinforced polypropylene composite material and a preparation method thereof. Background The polypropylene resin has good comprehensive mechanical property, low density and good chemical stability, and is a widely applied general plastic, especially because of the characteristics of good chemical stability, excellent mechanical property and convenient processing. The properties of the alloy can be adjusted by means of modification, filling, alloying and the like, so that the alloy can be applied to a plurality of special occasions. As a household transportation tool widely applied at present, the electric bicycle not only can provide convenience for daily travel, but also can travel with low carbon, and almost becomes the standard of every family. Meanwhile, with the upgrade of the new national standard, the new product has challenges in the aspects of high filling property, flame retardant property, environmental protection property, shock resistance and the like of materials. Plastic parts of electric bicycles are used as important components in the bicycle body, play roles in attractive appearance and bearing, and are generally attached to the periphery of the bicycle frame. Therefore, the material for preparing the electric vehicle plastic part not only needs to consider the requirements of environmental protection, safety and the like, but also needs to combine the requirements of new national standards on flame retardant property and weight limitation, and puts forward higher requirements on the flame retardant property of the material, the use amount of plastic and weather resistance, so as to ensure that the product of the part cannot generate the problems of cracking, burning, pollution and the like in the use process, thereby influencing the service life of the product and threatening the safety of consumers. Therefore, a high-impact flame-retardant reinforced polypropylene composite material is provided. Disclosure of Invention Aiming at the defects of the prior art, the invention aims to provide a high-impact flame-retardant reinforced polypropylene composite material and a preparation method thereof, which solve the problems in the prior art. The aim of the invention can be achieved by the following technical scheme: The high impact fire-retardant reinforced polypropylene composite material comprises the following raw materials, by mass, 25-75 parts of polypropylene, 25-30 parts of halogen-free fire retardant, 5-25 parts of mineral filling powder, 2-6 parts of compatilizer and 1-10 parts of toughening agent. Further, the polypropylene composite material also comprises 0.5 part of lubricant and 0.5 part of antioxidant. Further, the melt index of the polypropylene at 230 ℃ and 2.16Kg is 10-30 g/10min. Further, the halogen-free flame retardant is a nitrogen-phosphorus flame retardant. Further, the mineral filling powder is wollastonite with a diameter of 5-12 μm. Further, the compatibilizer is maleic anhydride grafted polypropylene. Further, the toughening agent is any one of ethylene propylene diene monomer, ethylene-butene copolymer and ethylene-octene copolymer. Further, the antioxidant is at least one of hindered amine antioxidant, hindered phenol antioxidant, phosphite antioxidant and thioester antioxidant. Further, the lubricant is at least one of EBS, EBH, TAF, PETS. The preparation method of the polypropylene composite material comprises the following steps: fully mixing mineral filling powder, compatilizer and part of polypropylene, and then adding other raw materials for uniform mixing; and (3) feeding the mixed material into a screw extruder for melt extrusion and granulation to obtain the composite material. The invention has the beneficial effects that: The invention is matched according to the polypropylene material with high impact and medium melt index. And a certain amount of halogen-free flame retardant is added, so that the fire resistance of the polypropylene material is improved under the condition of ensuring the size and stability of the material. The impact resistance of the material is adjusted by matching with mineral filling with different addition amounts, the flame retardant property and the mechanical property of the material are not influenced, and the optimal mineral filling range is selected. The polypropylene composite material has the characteristics of stable quality, environmental protection, impact resistance, high flame retardance and excellent mechanical property, and has strong practicability. Detailed Description The technical solutions of the present invention will be clearly and completely described in conjunction with the embodiments of the present invention, and it is apparent that the described embodiments