Inorganic material filled flame retardant PP material and preparation method thereof

A technology of inorganic materials and flame retardants is applied in the material field of rail vehicles to achieve the effects of improving mechanical properties, 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

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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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  • Inorganic material filled flame retardant PP material and preparation method thereof
  • Inorganic material filled flame retardant PP material and preparation method thereof
  • Inorganic material filled 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 filled with inorganic materials 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 flame-retardant PP material filled with inorganic materials in Examples 1-3.

[0054] Table 1

[0055]

[0056]

[0057] 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.

[0058] The scanning electron microscope image of molybdenum disulfide C figure 2 As shown, its average particle size is about 0.01 μm-1 μm.

[0059] The antioxidant is a mixture of hindered phenolic antioxidant 1010 and phosphite antioxidant 168 in a mass ratio of 1:1.

[0060] PP resin is a mixture of homopolymerized PP and copolymerized PP in a mass ratio of 4:1.

[0061] The mesh number of talcum powder is 3000 mesh.

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Abstract

The invention relates to an inorganic material filled flame retardant PP material which is prepared from the following raw materials in percent by mass: 57-77% of PP resin, 9-29% of a flame retardant,1-5% of a flame retardant synergist, 3-20% of inorganic material filler, 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 molybdenumdisulfide and tungsten disulfide, the average grain sizes of which are 0.1-10 [mu]m. The inorganic material filled flame retardant PP material has efficient flame retardance.

Description

technical field [0001] The invention relates to the technical field of materials used for rail vehicles, in particular to a flame-retardant PP material filled with inorganic materials 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. m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08L23/14C08K5/3492C08K5/3462C08K3/30C08K3/34C08K3/26
CPCC08L23/12C08K2003/265C08K2003/3009C08K2003/3045C08L2201/02C08L2205/02C08L23/14C08K5/34928C08K5/3462C08K3/34C08K3/30C08K3/26
Inventor 于海鸥韩春春王灿耀桑杰方安平
Owner GUANGDONG ALDEX NEW MATERIAL CO LTD
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