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Glass fiber enhanced flame retardant PP material and preparation method thereof

A glass fiber and flame retardant technology, which is applied in the material field of rail vehicles to achieve the effects of improving compatibility, low smoke density and low smoke toxicity

Inactive Publication Date: 2019-03-19
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.
Moreover, the existing PP materials cannot obtain high flame retardant efficiency and good mechanical properties at the same time

Method used

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  • Glass fiber enhanced flame retardant PP material and preparation method thereof
  • Glass fiber enhanced flame retardant PP material and preparation method thereof
  • Glass fiber enhanced flame retardant PP material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0050] The preparation method of the flame-retardant PP material reinforced by glass fiber is as follows:

[0051] 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 -190°C, the temperature of the fourth zone is 180-190°C, the temperature of the fifth zone 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 can obtain flame-retardant PP materials for rail vehicles.

Embodiment 1-3

[0053] Table 1 is the formulation of the glass fiber reinforced flame-retardant PP material in Examples 1-3.

[0054] Table 1

[0055]

Example 1

Example 2

Example 3

PP resin

47

57

67

long glass fiber

10

10

10

piperazine pyrophosphate A

29

19

9

Molybdenum disulfide C

3

3

3

MAH-g-PP

10

10

10

antioxidant

0.5

0.5

0.5

Lubricant EBS

0.5

0.5

0.5

[0056] Among them, the scanning electron microscope picture of piperazine pyrophosphate A is as follows figure 1 As shown, its average particle size is about 0.1 μm-10 μm.

[0057] The scanning electron microscope image of molybdenum disulfide C figure 2 As shown, its average particle size is about 0.01 μm-1 μm.

[0058] The antioxidant is a mixture of hindered phenolic antioxidant 1010 and phosphite antioxidant 168 in a mass ratio of 1:1.

[0059] PP resin is a mixture of homopolymerized PP and copo...

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Abstract

The invention relates to a glass fiber enhanced flame retardant PP material which is prepared from the following raw materials in percent by mass: 47-67% of PP resin, 9-29% of a flame retardant, 1-5%of a flame retardant synergist, 5-20% of glass fibers, 5-20% of a glass fiber compatilizer, 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, the average grain sizes of which are 0.1-10 [mu]m and piperazine phosphate, the average grain sizes of which are 0.1-10 [mu]m. The flame retardant synergist is selected from one or more of molybdenum disulfide and tungsten disulfide, the average grain sizes of which are 0.1-10 [mu]m. The glass fiber enhanced flame retardant PP material has excellent mechanical properties while keeping efficient flame retardance.

Description

technical field [0001] The invention relates to the technical field of materials used for rail vehicles, in particular to a glass fiber reinforced flame-retardant PP material and a preparation method thereof. Background technique [0002] In recent years, with the rapid development of rail vehicles, 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 to address the safety of rail vehicles. Compared with the current fire protection standards of various countries, this standard is applicable to a wider range of rail transit rolling stock. And its technical content is also stricter and more comprehensive, and its fire protection system is more complete. At present, this standard has basically replaced the standards of the United Kingdom, Germany and France, and has been promoted and implemented within the EU. my country...

Claims

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Application Information

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IPC IPC(8): C08L23/12C08L23/14C08L51/06C08K5/3492C08K5/3462C08K3/30C08K7/14C08J5/04
CPCC08J5/043C08J2323/12C08J2423/14C08J2451/06C08K5/3462C08K5/34928C08K7/14C08K2003/3009
Inventor 于海鸥韩春春王灿耀易庆锋桑杰
Owner GUANGDONG ALDEX NEW MATERIAL CO LTD
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