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Flame-retardant PP material and preparation method thereof

A technology of flame retardant and flame retardant synergist, which is used in the material field of rail vehicles to achieve the effect of low smoke density

Inactive Publication Date: 2019-04-16
GUANGDONG ALDEX NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are still few patent reports on selecting a suitable flame retardant system and obtaining a flame retardant PP material with good performance that can meet the EN45545 standard for rail vehicle interior parts.

Method used

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  • Flame-retardant PP material and preparation method thereof
  • Flame-retardant PP material and preparation method thereof
  • Flame-retardant PP material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0048] The preparation method of flame retardant PP material is as follows:

[0049] After mixing each raw material in a high-speed mixer for 5 minutes, the mixture is placed in a twin-screw extruder. The processing technology is: the temperature of the first zone is 170-180 ° C, the temperature of the second zone is 175-185 ° C, and the temperature of the third zone is 180 ° C. -190°C, the temperature of the four zones is 180-190°C, the temperature of the five zones is 180-190°C, the temperature of the machine head is 180-200°C, and the speed of the main engine is 300-500 rpm. Extrusion and granulation to obtain flame retardant PP material for rail vehicles.

Embodiment 1-4

[0051] Table 1 is the formula of the flame retardant PP material in Examples 1-4.

[0052] Table 1

[0053]

Example 1

Example 2

Example 3

Example 4

PP resin

57

67

77

87

Piperazine Pyrophosphate A

39

29

19

9

Molybdenum disulfide C

3

3

3

3

Antioxidant

0.5

0.5

0.5

0.5

Lubricant EBS

0.5

0.5

0.5

0.5

[0054] Among them, the scanning electron microscope image of piperazine pyrophosphate A is as follows figure 1 As shown, the average particle size ranges from 0.1 μm to 10 μm.

[0055] The scanning electron microscope image of molybdenum disulfide C is as follows figure 2 As shown, the average particle size ranges from 0.01 μm to 1 μm.

[0056] The antioxidant is a mixture of hindered phenol antioxidant 1010 and phosphite antioxidant 168 in a mass ratio of 1:1.

[0057] PP resin is a mixture of homo-PP and copolymerized PP in a mass ratio of 4:1.

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Abstract

The invention relates to a flame-retardant PP material and a preparation method thereof. The flame-retardant PP material is prepared from, by mass, 57-87% of PP resin, 9-39% of a flame retardant, 1-5%of a flame-retardant synergist, 0.1-0.6% of an antioxidant and 0.3-1% of a lubricant; the flame retardant is selected from one or more of melamine phosphate with the average particle size of 0.1-10 microns and piperazine phosphate with the average particle size of 0.1-10 microns; the flame-retardant synergist is selected from one or more of molybdenum disulfide and tungsten disulfide with the average particle size of 0.1-10 microns. The flame-retardant PP material has efficient flame retardant properties.

Description

technical field [0001] The present invention relates to the technical field of materials for rail vehicles, in particular to flame-retardant PP materials and a preparation method thereof. Background technique [0002] In recent years, with the rapid development of rail vehicles, all countries have established their own standards for rail vehicle safety, especially fire safety and fire prevention. In 2013, the European Union formulated the EN45545 fire protection standard for the first time in response to the safety of rail vehicles. Compared with the current fire protection standards of various countries, the standard is applicable to a wider range of rail transit rolling stock. And its technical content is also stricter and more comprehensive, and the fire protection system is more complete. At present, the standard has basically replaced the British, German and French standards, and has been promoted and implemented within the EU. And my country will gradually improve th...

Claims

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Application Information

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IPC IPC(8): C08L23/12C08L23/14C08K13/02C08K3/30C08K5/3462
CPCC08L23/12C08K2003/3009C08K2201/011C08L2201/02C08L23/14C08K13/02C08K3/30C08K5/3462
Inventor 于海鸥韩春春王灿耀方安平桑杰
Owner GUANGDONG ALDEX NEW MATERIAL CO LTD
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