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Expanded carbon flame-proof polypropelene composition and preparation method thereof

A technology for flame-retardant polypropylene and its composition, which is applied in the field of intumescent charcoal flame-retardant polypropylene composition and its preparation. The production method is simple and reliable, the mechanical properties remain unchanged, and the flame retardant performance is excellent.

Active Publication Date: 2010-10-27
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Early intumescent flame-retardant polypropylene, although environmentally friendly, can overcome the defects of large smoke and many molten droplets when burning halogen-containing flame retardants, but the addition of intumescent flame retardants is still too much. , damages the mechanical properties of flame-retardant polypropylene, and some flame retardants have poor temperature resistance, which has a negative impact on the mechanical and processing properties of the material, which still restricts the application of flame-retardant polypropylene in the fields of automobiles and high-end electronics and electrical appliances

Method used

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  • Expanded carbon flame-proof polypropelene composition and preparation method thereof

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Embodiment 1～4

[0027] Polypropylene (4# powder, Zhonglan Tianjin Chemical Plant), compatibilizer maleic anhydride grafted polypropylene (g-PP, American EXXON company), ammonium polyphosphate (APP, Zhenjiang Star Flame Retardant Material Factory), Pentaerythritol (PER, Jilin Changsong Chemical Plant), melamine cyanurate (MCA, Zhonglan Chenguang Chemical Research Institute), montmorillonite (Nanocor I.44P, American Naco Corporation), zinc oxide (ZnO, commercially available) , Antioxidant B225 (Swiss Ciba Company), silane coupling agent (KH-550, Nanjing Shuguang Chemical Factory), put into a low-speed mixer and stir evenly, so that each component is fully mixed evenly. Then the above mixed material was extruded and granulated in a twin-screw extruder (TE-30, Nanjing Ruiya Company) at 180-200°C. The extruded pellets were dried in a constant temperature oven at 80°C for 6 hours, and then injected into standard specimens at a temperature of 190-210°C for various mechanical property tests. The spe...

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Abstract

The invention relates to an expansive char-forming flame-retardant polypropylene composition and a production method thereof. The composition comprises the following components: 100 weight parts of polypropylene, 10-30 weight parts of ammonium polyphosphate, 2.8-8.3 weight parts of pentaerythritol, 2.8-8.3 weight parts of melamine cyanurate and 0.5-5 weight parts of montmorillonite. The total additional amount of ammonium polyphosphate, pentaerythritol and melamine cyanurate is at least 31 weight parts. The production method comprises the following steps: proportioning all components (including polypropylene, ammonium polyphosphate, pentaerythritol, melamine cyanurate and montmorillonite) at the given ratios, melting, mixing, extruding and granulating. The composition has better flame retardation, good processability and mechanical property. The production method is simple and reliable.

Description

technical field [0001] The present invention relates to a modified polypropylene, and furthermore, relates to an expanded charcoal flame-retardant polypropylene composition and a preparation method thereof. Background technique [0002] Polypropylene is a general-purpose plastic with excellent comprehensive properties, but it is a flammable material with a low oxygen index, a high heat release rate during combustion, a high calorific value, a fast flame propagation speed, and is not easy to extinguish, which limits the application of polypropylene. [0003] In the past, the flame-retardant polypropylene was mostly halogen-based flame-retardant, and the addition amount was large, which was not only very harmful to the environment, but also had a negative impact on the mechanical and processing properties of the material. [0004] Intumescent flame retardant polymer is a new flame retardant technology developed on the basis of flame retardant coatings. It blends intumescent f...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/12C08K5/3492C08K3/32C08K5/053C08K3/34
Inventor 金滟蔡涛康兴川丁树岩刘善元张静陈绍梅
Owner CHINA PETROLEUM & CHEM CORP
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