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Method for preparing halogen-free flame retardant polypropylene modified material

A flame-retardant polypropylene, modified technology, applied in the field of preparation of modified polypropylene modified materials, to achieve the effects of simple processing technology, increased production capacity, and excellent mechanical properties

Inactive Publication Date: 2015-06-10
NANJING JINSHAN AUTOMOBILE ENG PLASTIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The present invention provides the technical scheme and preparation process of the above-mentioned polypropylene modified material, which overcomes the shortcomings of the prior art that the improvement of the flame retardancy of polypropylene and the guarantee of the original mechanical properties cannot be achieved at the same time

Method used

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  • Method for preparing halogen-free flame retardant polypropylene modified material
  • Method for preparing halogen-free flame retardant polypropylene modified material
  • Method for preparing halogen-free flame retardant polypropylene modified material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] (1) Process formula

[0019]

[0020] (2) Processing technology

[0021] Mix 65 parts by mass of PP resin, 10 parts by mass of toughening agent, 20 parts by mass of inorganic rigid particles, 5 parts by mass of ammonium polyphosphate II, and 0.3 parts by mass of antioxidant in a high-speed mixer at 80-90°C 5 minutes, and then extrude and granulate on the twin-screw extruder. The temperature of the extruder is: 185°C for the first interval, 190°C for the second and third intervals, 195°C for the fourth, fifth, sixth, seventh, and eighth intervals, and 190°C for the ninth interval. ℃, three-stage vacuuming is carried out in the third, fifth, and seventh intervals. Extruded into strips, tested for flame retardancy according to UL94 standards, tested for bending properties according to GB / T9341-2000, tested for impact properties in GB / T1843-1996, tested for tensile properties in GB1040-92, and tested in GB / T3682-2000 melt flow rate.

[0022] According to this process,...

Embodiment 2

[0024] Process recipe

[0025]

[0026] The above formula was molded according to the processing technology of Example 1 to obtain a flame-retardant polypropylene modified material. Its properties are shown in Tables 1 and 2.

Embodiment 3

[0028] Process recipe

[0029]

[0030]

[0031] The above formula was molded according to the processing technology of Example 1 to obtain a flame-retardant polypropylene modified material. Its performance is shown in Table 1.

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Abstract

The invention relates to a modifying method of a polypropylene modified material and belongs to the high polymer material modification process. The invention discloses a method for preparing the halogen-free flame retardant polypropylene modified material, so that a V-0 stage flame retardant property can be obtained and an excellent mechanical property can be kept. The polypropylene modified material is composed of the following components in parts by weight: 45-95 parts of polypropylene resin (PP), 0-15 parts of POE elastomer, 0-25 parts of inorganic rigid particle, 5-20 parts of ammonium polyphosphate fire retardant (APP), and 0.2-0.4 part of antioxidant. Each component is blended and squeezed so that the prepared modified polypropylene modified material is high in flame retardant efficiency, excellent in mechanical property, halogen-free, non-poisonous and environmentally friendly and can be widely used for the automobile and electric product material.

Description

1. Technical field: [0001] The invention relates to a preparation method of a modified polypropylene modified material, in particular to a preparation method of a halogen-free flame-retardant polypropylene modified material. 2. Background technology: [0002] Polypropylene (PP) has the advantages of low density, excellent mechanical properties, good stress crack resistance, fatigue yield resistance and chemical resistance, and has the advantages of cheap price, easy processing and molding, recycled and recyclable, etc. It has been widely used, especially in the automotive industry, household appliances and machinery fields. However, due to the poor low temperature resistance and low rigidity of polypropylene materials, it cannot meet the requirements for use in interior and exterior parts of automobiles, so it must be modified. The main modification methods of polypropylene include elastomer-toughened polypropylene modification; inorganic filler-filled reinforced polypropyl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08K13/02C08K3/32C08K3/34
CPCC08L23/12C08L2201/02C08L2201/22
Inventor 牛建勋沈玉海于翠翠吴锡忠
Owner NANJING JINSHAN AUTOMOBILE ENG PLASTIC
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