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Modified polypropylene composite material

A composite material and polypropylene technology, applied in the field of modified polypropylene composite materials, can solve the problems of poor weather resistance and high price, and achieve the effects of long service life, improved compatibility, and improved impact toughness

Active Publication Date: 2014-01-01
SHANTOU TENGYE PLASTIC IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the flame retardant performance of the existing flame retardant polypropylene meets the requirements, the weather resistance is not satisfactory and the price is high

Method used

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  • Modified polypropylene composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] The weight percent formula of the modified polypropylene composite material in Example 1 is: 65% of copolymerized polypropylene, 6% of polyolefin elastomer, 6% of maleic anhydride grafted polypropylene, γ-methacryloxypropyl trimethyl 0.5% oxysilane, 10% ammonium polyphosphate, 5% melamine, 5% pentaerythritol, 1% organic montmorillonite, 0.5% light stabilizer with CAS No. 82451-48-7, 1% stearic acid, the above The raw materials were mixed and stirred, extruded by a twin-screw extruder, cooled, and pelletized to obtain the modified polypropylene composite pellets of Example 1.

Embodiment 2

[0022] The weight percent formula of the modified polypropylene composite material in Example 2 is: 60% of copolymerized polypropylene, 4% of polyolefin elastomer, 5% of maleic anhydride grafted polypropylene, γ-methacryloxypropyl trimethyl Oxysilane 0.3%, ammonium polyphosphate 14%, melamine 7.5%, pentaerythritol 6.5%, organic montmorillonite 1.3%, CAS No. 82451-48-7 light stabilizer 0.2%, stearic acid 1.2%, the above The raw materials were mixed and stirred, extruded by a twin-screw extruder, cooled, and pelletized to obtain the modified polypropylene composite pellets of Example 2.

Embodiment 3

[0023] The weight percentage formula of the modified polypropylene composite material of embodiment 3 is: copolymerized polypropylene 70%, polyolefin elastomer 8%, maleic anhydride grafted polypropylene 8%, γ-methacryloxypropyl trimethyl Oxysilane 1.0%, ammonium polyphosphate 4.5%, melamine 2.7%, pentaerythritol 2.3%, organic montmorillonite 0.3%, light stabilizer with CAS No. 82451-48-7 1.5%, stearic acid 1.7%, the above The raw materials were mixed and stirred, extruded by a twin-screw extruder, cooled, and pelletized to obtain the modified polypropylene composite pellets of Example 3.

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Abstract

The invention discloses a modified polypropylene composite material which comprises the following components in percentage by weight: 60-80% of polypropylene copolymer, 2-10% of toughener, 1-10% of maleic anhydride grafted polypropylene, 0.1-2% of coupling agent, 5-30% of halogen-free flame retardant, 0.2-2% of photostabilizer and 1-2% of stearic acid. The modified polypropylene composite material has the advantages of favorable weather resistance and long service life; the 3000-hour color difference is less than 1, and thus, the modified polypropylene composite material satisfies the requirement of no color fading after outdoor use for 8-10 years; the flame retardancy is favorable, the flame-retardant grade reaches V0 Grade, and the environmental protection property satisfies the RoHS standard requirement; and besides, the modified polypropylene composite material has excellent toughness, rigidity and scratch resistance. The modified polypropylene composite material can be used for blow molding, is suitable for producing various automobile parts, electric appliance parts and the like, and is especially suitable for producing outdoor bleacher chairs.

Description

technical field [0001] The invention belongs to the technical field of thermoplastic polymer materials, and in particular relates to a modified polypropylene composite material. Background technique [0002] Polypropylene is widely used in automobiles, home appliances, textiles, construction and other industries due to its excellent mechanical properties, good electrical insulation, chemical resistance, low density and light weight. However, the oxygen index of polypropylene is low, only 17.14. It is easy to burn, and the heat of combustion is large, which will produce a large amount of molten droplets and smoke, which will have an adverse impact on the ecological environment, and it is easy to spread flames. In recent years, the fires caused by this Accidents occur frequently, causing huge damage to people's lives and property safety. Therefore, flame retardancy is also a requirement that polypropylene materials need to meet. At present, countries all over the world have ...

Claims

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Application Information

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IPC IPC(8): C08L23/14C08L51/06C08K5/5425C08K3/32C08K5/3492
CPCC08L23/14C08L2201/02C08L2201/08C08L2205/03C08L2207/04C08L51/06C08L23/00C08K13/02C08K2003/323C08K5/34922C08K5/053C08K3/346
Inventor 黄孟波黄立波刘永利
Owner SHANTOU TENGYE PLASTIC IND
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