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Low-temperature impact resistant, cracking resistant and flame-retardant polypropylene material, and preparation method and applications thereof

A technology of flame-retardant polypropylene and low-temperature resistance, which is applied in the application field of automotive exterior decoration and functional parts. It can solve the problems of poor low-temperature impact resistance, poor low-temperature impact performance, and insufficient notch impact strength, etc., and achieve good low-temperature impact resistance. Ability, improved crack resistance, better toughening effect

Inactive Publication Date: 2019-04-19
TIANJIN KINGFA NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Since polypropylene is a crystalline polymer, its brittleness is poor at low temperatures, so its products have poor low-temperature impact resistance, which limits its use in low-temperature environments
[0004] Patent CN107286479A prepares a lightweight, high-impact, cold-resistant, high-efficiency flame-retardant polypropylene composition by reducing the particle size of the dispersed phase and improving the impact resistance without adding any toughening agent, but its strength is low, which is not conducive to welding
Patent CN103724806A increases the notched impact strength of the material to 15.0KJ / m by adding a composite toughening agent 2 , but its notched impact strength at -30°C is low, and its low temperature impact resistance is poor
Patent CN101974195A discloses a flame-retardant low-temperature resistant polypropylene material and its preparation method and application, but its notched impact strength is insufficient, and its low-temperature impact performance is poor

Method used

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  • Low-temperature impact resistant, cracking resistant and flame-retardant polypropylene material, and preparation method and applications thereof
  • Low-temperature impact resistant, cracking resistant and flame-retardant polypropylene material, and preparation method and applications thereof

Examples

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Effect test

Embodiment 1

[0040] A low-temperature impact-resistant, crack-resistant, and flame-retardant polypropylene material, comprising the following components in parts by weight: 71.2 parts of polypropylene resin, 7 parts of POE, 15 parts of decabromodiphenylethane, 5 parts of antimony white, 0.8 parts of stabilizer, 1 part of toner.

[0041] The preparation method of the above-mentioned low-temperature impact-resistant, crack-resistant and flame-retardant polypropylene material is as follows: each component is placed in a high-speed mixer and fully stirred to obtain a premix, and the premix is ​​added to the main feeding port of the twin-screw extruder, Melt extrusion, granulation and drying are carried out to obtain a low-temperature impact-resistant, crack-resistant, and flame-retardant polypropylene material.

[0042] Among them, the melt extrusion temperature of the twin-screw extruder is: the temperature of the first zone is 100-120°C, the temperature of the second zone is 190-210°C, the t...

Embodiment 2

[0044] A low-temperature impact-resistant, crack-resistant, flame-retardant polypropylene material, comprising the following components in parts by weight: 61.2 parts of polypropylene resin, 7 parts of POE, 10 parts of talcum powder, 15 parts of decabromodiphenylethane, 5 parts of antimony white, 0.8 parts of stabilizer, 1 part of toner.

[0045] The preparation method of the above-mentioned low-temperature impact-resistant, crack-resistant and flame-retardant polypropylene material is as follows: each component is placed in a high-speed mixer and fully stirred to obtain a premix, and the premix is ​​added to the main feeding port of the twin-screw extruder, Melt extrusion, granulation and drying are carried out to obtain a low-temperature impact-resistant, crack-resistant, and flame-retardant polypropylene material.

[0046] Among them, the melt extrusion temperature of the twin-screw extruder is: the temperature of the first zone is 100-120°C, the temperature of the second z...

Embodiment 3

[0048]A low-temperature impact-resistant, crack-resistant, flame-retardant polypropylene material, comprising the following components in parts by weight: 60.2 parts of polypropylene resin, 10 parts of POE, 21 parts of decabromodiphenylethane, 7 parts of antimony white, 0.8 parts of stabilizer, 1 part of toner.

[0049] The preparation method of the above-mentioned low-temperature impact-resistant, crack-resistant and flame-retardant polypropylene material is as follows: each component is placed in a high-speed mixer and fully stirred to obtain a premix, and the premix is ​​added to the main feeding port of the twin-screw extruder, Melt extrusion, granulation and drying are carried out to obtain a low-temperature impact-resistant, crack-resistant, and flame-retardant polypropylene material.

[0050] Among them, the melt extrusion temperature of the twin-screw extruder is: the temperature of the first zone is 100-120°C, the temperature of the second zone is 190-210°C, the tempe...

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Abstract

The invention provides a low-temperature impact retardant, cracking retardant and flame-retardant polypropylene material, and a preparation method and applications thereof. The polypropylene materialincludes, by weight, 40-75 parts of polypropylene resin, 2-20 parts of ethylene-octene copolymer (POE), 0-30 parts of a mineral filler, 5-30 parts of a brominated flame retardant, 5-15 parts of a synergistic flame retardant, 0.3-3.5 parts of a stabilizing agent, and 0.5-2 parts of toner. Through the addition of the brominated flame retardant and the synergistic flame retardant, the material can have good flame retardant properties; and through the selection of the specific copolymerized polypropylene resin and the ethylene-octene copolymer (POE) which is taken as a flexibilizer to perform compounding, the material can have good low-temperature impact resistance and cracking resistance, and therefore, the material can be applied to external decorative parts and functional parts of large vehicles such as trucks and engineering trucks.

Description

technical field [0001] The invention belongs to the field of modified plastics, and in particular relates to a low-temperature impact-resistant, crack-resistant, flame-retardant polypropylene material and its preparation method and application, in particular to the application in automotive exterior decoration and functional parts. Background technique [0002] Polypropylene (PP) is currently one of the most widely used and produced general-purpose plastics in the world, because it has the characteristics of low density, excellent mechanical properties, high fluidity, chemical corrosion resistance, good electrical insulation, and easy processing and molding. , It is widely used in the automobile industry, household appliances, electronics, wire and cable, packaging and building materials. However, due to the molecular structure, the limiting oxygen index of polypropylene is only 17.5, and the char formation rate is almost 0. Therefore, it is easy to burn in case of fire, wit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L53/00C08L23/08C08K5/03C08K3/22
CPCC08L53/00C08L2201/02C08L23/0815C08K5/03C08K3/2279
Inventor 张海洋李晟王中林张春怀李欣徐昌竹张栋玮钱文轩陶四平
Owner TIANJIN KINGFA NEW MATERIAL
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