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High-performance low-smoke halogen-free flame-retardant polypropylene composite material and preparation method thereof

A technology of flame-retardant polypropylene and composite materials, applied in the field of low-smoke halogen-free flame-retardant polypropylene composite materials, can solve the problems of poor mechanical properties of halogen-free flame-retardant products, reduce personal safety and environmental hazards, and be cost-effective , Excellent flame retardancy and smoke suppression performance

Active Publication Date: 2012-07-04
LIAONING LIAOJIE SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention provides a high-performance low-smoke halogen-free flame-retardant polypropylene composite material and its preparation method in order to solve the problem of poor mechanical properties of halogen-free flame-retardant products in the prior art

Method used

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  • High-performance low-smoke halogen-free flame-retardant polypropylene composite material and preparation method thereof
  • High-performance low-smoke halogen-free flame-retardant polypropylene composite material and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Weigh the polypropylene resin, halogen-free flame retardant, flame retardant synergist, smoke suppressant, compatibilizer, antioxidant, and lubricant according to the proportion, and mix them in a high-speed mixer for 10-15 minutes to obtain the prepared Mixing; the premixed material is melted, extruded, granulated, and dried in a twin-screw extruder at a temperature range of 170-220°C to obtain a halogen-free flame-retardant masterbatch with a melt index of 43g / 10min; the flame-retardant The masterbatch is put into the extruder, melted and extruded within the temperature range of 150-230°C, and compounded with continuous fibers to form a prepreg tape; then the prepreg tape is hot-pressed into a composite sheet, and the composite pressing process: 183°C, 1.5MPa, hot pressing for 40 minutes, cold pressing for 20 minutes.

Embodiment 2

[0038] Weigh the polypropylene resin, flame retardant, flame retardant synergist, smoke suppressant, compatibilizer, antioxidant, and lubricant according to the proportion, and mix them in a high-speed mixer for 10-15 minutes to obtain a premix ;The premix is ​​melted, extruded, granulated, and dried in the twin-screw extruder at a temperature range of 170-220°C to obtain a halogen-free flame-retardant masterbatch with a melt index of 41g / 10min; the flame-retardant masterbatch In the extruder, it is melted and extruded at a temperature range of 150-240°C, and compounded with continuous fibers to form a prepreg tape; then the prepreg tape is hot-pressed into a composite sheet, and the composite pressing process: 183°C, 1.5MPa , hot pressing for 40 minutes, cold pressing for 20 minutes.

Embodiment 3

[0040]Weigh the polypropylene resin, flame retardant, flame retardant synergist, smoke suppressant, compatibilizer, antioxidant, and lubricant according to the proportion, and mix them in a high-speed mixer for 10-15 minutes to obtain a premix ; The premix is ​​melted, extruded, granulated, and dried in a twin-screw extruder at a temperature range of 170-200°C to prepare a halogen-free flame-retardant masterbatch with a melt index of 41g / 10min; In the extruder, it is melted and extruded at a temperature range of 150-205°C, and compounded with continuous fibers to form a prepreg tape; then the prepreg tape is hot-pressed into a composite sheet, and the composite pressing process: 183°C, 1.5MPa, Hot pressing for 40 minutes, cold pressing for 20 minutes.

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Abstract

The invention discloses a high-performance low-smoke halogen-free flame-retardant polypropylene composite material which comprises the following components in parts by weight: 154-172 parts of continuous glass fiber, 100 parts of polypropylene resin, 41-60 parts of halogen-free flame retardant, 4-11 parts of flame-retardant synergist, 4-14 parts of smoke inhibitor, 5-9 parts of compatibilizer, 0.9 part of antioxidant and 1 part of lubricant. The preparation method of the high-performance low-smoke halogen-free flame-retardant polypropylene composite material comprises the following steps: preparing a low-smoke halogen-free flame-retardant polypropylene master batch; extruding the flame-retardant master batch by an extruding machine; evenly coating onto a continuous glass fiber surface to be evenly compounded with the continuous glass fiber; and carrying out multilayer high-temperature pressing to obtain a hard composite board. The high-performance low-smoke halogen-free flame-retardant polypropylene composite material has the advantages of excellent mechanical properties, excellent flame retardancy and favorable smoke elimination performance; and the preparation technique is simple, halogen-free, flame-retardant, green and environment-friendly, and can be widely used in the fields having strict requirements for flame retardancy and smoke generation amount, such as public occasions, automobile interior ornaments, decorating and the like.

Description

technical field [0001] The invention relates to a polypropylene composite material, in particular to a high-performance low-smoke halogen-free flame-retardant polypropylene composite material and a preparation method thereof. Background technique [0002] Polypropylene has the characteristics of low production cost, good chemical stability and electrical insulation, and easy processing. It has been widely used in the fields of automobiles, home appliances, construction, packaging, and agriculture. However, the oxygen index of polypropylene is only 17.5%, which is relatively low. It is easy to burn, and there are drips and drips during the combustion process. These problems restrict the application of polypropylene to a large extent. Adding a flame retardant can effectively reduce the combustion performance of the polymer. Although the ideal flame retardant effect can be achieved with the addition of some flame retardants, a large amount of toxic smoke will be released during...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08L23/14C08K13/04C08K7/14B29B9/06
Inventor 刘世军
Owner LIAONING LIAOJIE SCI & TECH
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