Expansion flame-proof polypropelene composition and preparation method thereof

A polypropylene composition and intumescent flame-retardant technology, which is applied in the field of modified polypropylene, can solve the problems of damage to the properties of polypropylene materials and mechanical properties, and achieve small additions, little impact on processing and mechanical properties, and high application value effect

Active Publication Date: 2008-10-29
CHINA PETROLEUM & CHEM CORP +1
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  • Abstract
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Problems solved by technology

Halogen-free intumescent flame-retardant polypropylene can form a uniform heat-insulating and oxygen-insulating porous carbon foam protective carbon layer on the surface of the material when it is heated or burned, which can significantly improve the flame retardancy of the material and increase the flame-retardant efficiency , is a flame-retardant polypropylene material that is completely halogen-free and environmentall

Method used

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  • Expansion flame-proof polypropelene composition and preparation method thereof

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Embodiment 1～3

[0032] 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 (NanocorI.44P, American Naco Corporation), fully vulcanized powder silicone rubber (VP-601 , homemade, average particle size 100-150nm, gel content 81%), antioxidant B225 (Swiss Ciba), silane coupling agent (KH-550, Nanjing Shuguang Chemical Plant), put into a low-speed mixer and stir evenly , so that the components are thoroughly 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 tempera...

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Abstract

The invention relates to an expansive 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, 3.3-10 weight parts of pentaerythritol, 6.6-20 weight parts of melamine cyanurate, 0.5-5 weight parts of silicone rubber 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 the components according to the weight parts, 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, more specifically, to an intumescent flame-retardant polypropylene composition and a preparation method thereof. Background technique [0002] Polypropylene (PP) plays an important role in general-purpose resins because of its low price and good comprehensive properties. According to reports, in recent years, the world's polypropylene consumption has reached 22000kt / year. As a general-purpose plastic, polypropylene is not only easy to process and use, but also has very good dielectric properties, so it is widely used in electronic appliances, telecommunications, chemical fiber, petroleum, chemical industry, environmental protection, automobiles and other fields. Due to its unique non-hygroscopicity , It can withstand 150°C under no-load conditions, making its application in household appliances increasing. However, polypropylene is a flammable material with an oxygen index of only 17.4. It ha...

Claims

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Application Information

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IPC IPC(8): C08L23/12C08K5/3492C08L83/04C08L51/06C08K3/32C08K3/34C08K5/053
Inventor 金滟蔡涛康兴川刘善元丁树岩张静陈绍梅
Owner CHINA PETROLEUM & CHEM CORP
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