Special halogen-free flame-retardant master batch for polypropylene and preparation method for halogen-free flame retardant master batch

A technology for flame-retardant masterbatch and polypropylene, which is applied in the field of preparation of halogen-free flame-retardant masterbatch for polypropylene, can solve the problems of difficult to stabilize product quality, difficult to control reaction conditions, low content of masterbatch, etc., and achieve low production cost , reduce the harm to workers' health, and the effect of high production efficiency

Inactive Publication Date: 2012-07-25
GUANGZHOU SUPER DRAGON ENG PLASTICS +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Patent CN102212228A prepares a kind of halogen-free flame-retardant polypropylene masterbatch, the prepared masterbatch content is low, only 40-60%, and adopts the processing method of twin-screw, will cause larger dust pollution
Patent CN1159355C discloses a preparation method of polyolefin non-halogen flame retardant masterbatch, this method introduces polar groups on the flame retardant molecule by chemical method, so as to improve the structure of flame retardant and poly The compatibility of olefin resins, it is difficult to control the reaction conditions by chemical methods, and the product quality is difficult to stabilize

Method used

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  • Special halogen-free flame-retardant master batch for polypropylene and preparation method for halogen-free flame retardant master batch
  • Special halogen-free flame-retardant master batch for polypropylene and preparation method for halogen-free flame retardant master batch

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Effect test

Embodiment 1

[0023] Proportion according to the following mass percentage composition: phosphorus nitrogen halogen-free flame retardant 75% (brand: NP430, Jiangmen High-end Chemical Co., Ltd.), homopolypropylene (PPH) 22% (brand EP500N, China Ocean Shell Petrochemical Company), Modified ethylene bis fatty acid amide (ethylene bis fatty acid amide grafted with maleic anhydride) 3% (commercially available conventional models). After the above materials are accurately weighed, add PPH and modified ethylene bis fatty acid amide into the pressurized tumbling internal mixer, control the temperature in the internal mixing chamber to 150°C, the rotor speed to 40r / min, and the internal mixing time to 4min. After the material is melted, add the phosphorus-nitrogen halogen-free flame retardant powder into the internal mixer three times, with an interval of 3 minutes between feeding each time; after adding all the materials, banbury for 10 minutes. The rubber head after the above-mentioned internal mi...

Embodiment 2

[0026] Proportion according to the following mass percentage composition: phosphorus nitrogen halogen-free flame retardant 80% (brand: NP430, Jiangmen High-end Chemical Co., Ltd.), homopolypropylene (PPH) 19% (brand EP500N, China Ocean Shell Petrochemical Company), Modified ethylene bis fatty acid amide (ethylene bis fatty acid amide grafted with maleic anhydride) 1% (commercially available conventional models). After the above materials are accurately weighed, PPH and modified ethylene bis fatty acid amide are added to the pressurized tumbling internal mixer, the temperature in the internal mixing chamber is controlled at 160°C, the rotor speed is 40r / min, and the internal mixing time is 4min. After the material is melted, add the phosphorus-nitrogen halogen-free flame retardant powder into the internal mixer three times, with an interval of 3 minutes between feeding each time; after adding all the materials, banbury for 5 minutes. The rubber head after the above-mentioned in...

Embodiment 3

[0029] Proportion according to the following mass percentage composition: phosphorus nitrogen halogen-free flame retardant 85% (brand: FR-202, Shenzhen Hongtaiji Chemical Co., Ltd.), random copolymerized polypropylene (PPR) 13% (brand R370Y, Korea SK company), modified ethylene bis fatty acid amide (ethylene bis fatty acid amide grafted with divinylbenzene) 2% (commercially available conventional models). After the above materials are accurately weighed, PPR and modified ethylene bis fatty acid amide are added to the pressurized tumbling internal mixer. The temperature in the internal mixing chamber is controlled at 160°C, the rotor speed is 45r / min, and the internal mixing time is 6min. After the material is melted, add the phosphorus-nitrogen halogen-free flame retardant powder into the internal mixer three times, with an interval of 5 minutes between feeding each time; after adding all the materials, banbury for 10 minutes. The above-mentioned rubber head after banburying i...

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Abstract

The invention discloses a special halogen-free flame-retardant master batch for polypropylene and a preparation method for the halogen-free flame retardant master batch. Components of the master batch comprise, in mass percent, 75-90% of phosphorus-nitrogen halogen-free flame retardant, 8-22% of carrier and 0.1-5% of modified ethylene bis-fatty acid amide. By the aid of the master batch, quality instability of materials due to non-uniform mixing of powder and granules is effectively avoided, easiness in generation of chippings or powder during granule cutting is avoided, production efficiency is improved, and production cost is lowered. Adopting a continuous banburying-extrusion production process leads production efficiency to be high. The master batch effectively solves the problems of easiness in moisture absorption, degradation and foaming of halogen-free flame retardant, so that storage time of the phosphorus-nitrogen halogen-free flame retardant is prolonged, and processability of the phosphorus-nitrogen halogen-free flame retardant is improved. Besides, the special halogen-free flame-retardant master batch for the polypropylene has the advantages of easiness in dispersion, high flame-retardant efficiency and low production cost, and has less influence on physical and mechanical properties, heat resistance, processability and surface color of composite materials than a special traditional halogen-free flame-retardant master batch for polypropylene.

Description

technical field [0001] The invention discloses a preparation method of a non-halogen flame retardant masterbatch specially used for polypropylene. Background technique [0002] Flame retardant masterbatch is also called flame retardant masterbatch and fireproof masterbatch. It is called "concentrate" abroad, which means the concentration of flame retardants. Flame retardant masterbatch has been produced for decades. At first, it mainly solved the problems of uneven dispersion and serious dust pollution during the use of flame retardant powder. After years of development, a large number of scientific methods and the application of new technologies, people The research on flame retardant masterbatch is not limited to conventional issues such as dispersion and pollution prevention. It has formed an independent discipline and developed into an independent industry. A large number of technical research and application have made flame retardant masterbatch a high-tech and high-...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08L53/00C08L23/14C08J3/22B29B7/28B29B9/06B29C47/92B29C48/92
Inventor 任萍
Owner GUANGZHOU SUPER DRAGON ENG PLASTICS
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