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Tripentaerythritol-based polypropylene halogen-free flame retardant and preparation method thereof

A technology of tripentaerythritol and polypropylene, which is applied in the field of flame retardant, can solve the problems of few in-depth research on carbon sources, high hydrophilicity, and difficult processing, and achieves environmental adaptability, good flame retardant performance, and long-term stable application performance. Effect

Inactive Publication Date: 2011-10-26
JIANGSU RUIYANG CHEM +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The widely used carbon forming agent is mainly pentaerythritol. Although it is a good carbon source, it also has the disadvantages of high hydrophilicity and difficult processing. There are few in-depth studies on it as a carbon source, and there are no reports on its industrial application

Method used

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  • Tripentaerythritol-based polypropylene halogen-free flame retardant and preparation method thereof
  • Tripentaerythritol-based polypropylene halogen-free flame retardant and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0020] Grind 67g of ammonium polyphosphate (polymerization degree > 1000, water solubility of 0.5g / 100mL water), 30g of tripentaerythritol, 1g of trialkyl phosphate and 2g of nickel borate respectively, dry and mix, and stir evenly Finally, the polypropylene halogen-free flame retardant based on tripentaerythritol is obtained, which is in the form of white powder, and is stored in bags with heat and moisture insulation.

[0021] 30.5 g of the obtained tripentaerythritol-based polypropylene halogen-free flame retardant was dried at 60° C. for 4 h and mixed evenly with 69.3 g of polypropylene, 0.1 g of antioxidant 1010 and 0.1 g of antioxidant 168 to obtain A mixture, the obtained mixture is melted, kneaded, extruded, cooled, pelletized and dried on a twin-screw extruder with a diameter of 20 mm to obtain a halogen-free flame-retardant polypropylene composition pellet; the obtained halogen-free flame-retardant polypropylene composition pellet; After drying the pellets of the fla...

Embodiment 2

[0024] The ammonium polyphosphate of 62g (polymerization degree > 1000, water solubility is 0.5g / 100mL water), the dipentaerythritol of 33g, the dialkyl ester of the aromatic tetracarboxylic acid of 0.4g and the magnesium sulfate of 4.6g are ground respectively, Mix after drying, and stir evenly to obtain a tripentaerythritol-based polypropylene halogen-free flame retardant, which is in the form of white powder, and is stored in a heat-insulated and moisture-proof bag.

[0025] After drying 30.5 g of the obtained tripentaerythritol-based polypropylene halogen-free flame retardant at 60° C. for 4 h, mix it uniformly with 69.2 g of polypropylene, 0.1 g of antioxidant 1010 and 0.2 g of antioxidant 168 to obtain a Mixture, the obtained mixture is melted, kneaded, extruded, cooled, pelletized and dried on a twin-screw extruder with a diameter of 20 mm to obtain a halogen-free flame-retardant polypropylene composition pellet; the obtained halogen-free flame-retardant After the polyp...

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Abstract

The present invention relates to a tripentaerythritol-based polypropylene halogen-free flame retardant and a preparation method thereof, belonging to the technical field of flame retarding. The preparation method comprises the steps of: separately grinding and drying ammonium polyphosphate, tripentaerythritol, an alkyl ester synergist and a salt catalyst, then mixing and uniformly stirring to obtain the tripentaerythritol-based polypropylene halogen-free flame retardant which is white powder and can be stored in an heat-insulation moisture-proof environment. The flame retardant provided by the invention is characterized by a phosphorus-nitrogen compound high-efficiency flame retardant system and can be used as a flame retardant modifier to prepare halogen-free flame-retardant polypropylene granules by screw extrusion; and a 1.6 mm thick UL94V-0 flame retardant level is realized when the addition amount of the flame retardant is 25-32%, so that the obtained polypropylene composition isfree of halogen and has the advantages of excellent flame retardancy, good mechanical properties, low smoke, no toxicity, long-term stability of flame retardant, mechanical or electrical properties and other application properties, and environmental adaptability.

Description

technical field [0001] The invention relates to a tripentaerythritol-based polypropylene halogen-free flame retardant and a preparation method thereof, belonging to the technical field of flame retardancy. Background technique [0002] One of the largest users of flame-retardant polypropylene (PP) is the electrical and electronic industry. Therefore, flame-retardant polypropylene must comply with the RoHS directive and the regulations of China's electronic information product pollution control management method. As countries pay more attention to environmental protection, some widely used polypropylene halogen-containing flame retardants with outstanding flame retardant effects are facing unprecedented environmental pressure and challenges from increasingly stringent flame retardant regulations in various countries. Although halogenated flame retardants have high flame retardant efficiency, when the flame retardant polymer material is pyrolyzed at high temperature, a large a...

Claims

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Application Information

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IPC IPC(8): C08L23/12C08K13/02C08K3/32C08K5/06C08K5/521C08K3/38C08K5/12C08K3/30
Inventor 李定华杨荣杰李万忠刘武李远喜
Owner JIANGSU RUIYANG CHEM
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