Halogen-free inflaming-retarding polypropylene composition and preparation method thereof

A flame-retardant polypropylene and composition technology, applied in the field of chemical compositions, can solve problems such as poor compatibility, achieve the effects of improving grafting rate, balancing flame-retardant performance and processing performance, and reducing raw material costs

Inactive Publication Date: 2012-08-15
SHANGHAI FUYUAN PLASTICS SCI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to solve the technical problem of poor compatibility of the ammonium polyphosphate/polyol intumescent flame retardant system in the polypropylene system. , adjust the proportion of flame re

Method used

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  • Halogen-free inflaming-retarding polypropylene composition and preparation method thereof
  • Halogen-free inflaming-retarding polypropylene composition and preparation method thereof
  • Halogen-free inflaming-retarding polypropylene composition and preparation method thereof

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Embodiment 1-100

[0038] The formula of embodiment 1-100 is as shown in table 1, with a certain amount of polypropylene (F1002B, Yangzi Petrochemical, melt index is 2.83g / 10min) or a certain amount of olefin copolymerized polypropylene, a certain amount of ammonium polyphosphate and pentaerythritol, a certain amount Add a compatibilizer and a certain amount of antioxidant into a high-speed internal mixer, blend for 8 minutes at 180°C and 80r / min, prepare enough blended materials and press them into 3.2mm and 4mm plates at a high temperature press at 180°C, and pass through a sample cutting machine Cut into standard splines for performance testing.

[0039] List the preparation method of part compatibilizer below:

[0040] The preparation method of compatibilizer PP-g-MAH is: a certain amount of polypropylene (Y1600, Shanghai Petrochemical), xylene and maleic anhydride (MAH) are added in a three-necked flask, heated and stirred under nitrogen atmosphere, The temperature rises to 120°C. When the...

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Abstract

The invention provides a halogen-free inflaming-retarding polypropylene composition comprising the following components in parts by weight: 30-90 parts of polypropylene resin, 1-3 parts of compatilizer, 10-50 parts of fire retardant and 0.05-2 parts of antioxidant, wherein the compatilizer is a grafted object of low-molecular polyolefin and a polar monomer; and the fire retardant is the mixture of ammonium polyphosphate and polyatomic alcohol, and the mass ratio of the ammonium polyphosphate to the polyatomic alcohol is (0.1-12): 1. The preparation method of the halogen-free inflaming-retarding polypropylene composition comprises the following steps of: melting and commixing all the components including the polypropylene resin, the compatilizer, the fire retardant and the antioxidant in a high-speed mixing machine in parts by weight; and then, molding by a pressing plate or directing extruding and granulating in a screw extruding machine to prepare the halogen-free inflaming-retarding polypropylene composition. The composition disclosed by the invention has the advantages of good inflaming-retarding performance, low smoke and no toxin, and has good processing performance and mechanical property; and the preparation method is simple and reliable.

Description

technical field [0001] The invention relates to a chemical composition, in particular to a halogen-free flame-retardant polypropylene composition and a preparation method thereof. Background technique [0002] Polypropylene has good mechanical properties, excellent water resistance, and low cost. It is widely used in production and daily life, such as furniture, transportation, construction and automobile industry. As the third largest plastic variety, polypropylene has a fatal shortcoming. It is a flammable material with an oxygen index of only 17.4-18.5, and the combustion calorific value is large, producing a large number of molten droplets, which are very easy to spread flames. The development of polypropylene is largely restricted. [0003] The combustion performance of polypropylene can be improved by adding flame retardants. However, the flame retardants currently used have certain disadvantages. For example, the widely used bromine-based halogen-containing flame ret...

Claims

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Application Information

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IPC IPC(8): C08L23/12C08L23/14C08L23/16C08L51/06C08K9/04C08K9/06C08K3/32C08K5/053
Inventor 管涌夏寅郑安呐危大福李书召李娜
Owner SHANGHAI FUYUAN PLASTICS SCI CO LTD
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