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Halogen-free water resistant expansion type phosphor nitrogen combustion inhibitor for polyolefin and preparation thereof

A phosphorus nitrogen flame retardant and water resistance technology, applied in the field of flame retardants and their preparation, can solve problems such as poor water resistance, and achieve the effects of good flame retardancy, good compatibility and improved water resistance

Active Publication Date: 2009-01-14
SHANGHAI RES INST OF CHEM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the above-mentioned shortcomings of poor water resistance of halogen-free intumescent flame retardants for polyolefins, the present invention provides a halogen-free water-resistant intumescent phosphorus-nitrogen flame retardant for polyolefins that can realize overall coating modification and its preparation method

Method used

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  • Halogen-free water resistant expansion type phosphor nitrogen combustion inhibitor for polyolefin and preparation thereof
  • Halogen-free water resistant expansion type phosphor nitrogen combustion inhibitor for polyolefin and preparation thereof
  • Halogen-free water resistant expansion type phosphor nitrogen combustion inhibitor for polyolefin and preparation thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-9 and comparative example 1-2

[0027] See Table 1. Melamine phosphate, triazine derivatives, nanocomposite materials, phosphonate esters, fillers, antioxidants, etc. were weighed and mixed according to the data listed in Table 1. Then immerse the mixture in N, N-dimethylformamide solvent containing polyurethane elastomer, after drying, mix with polypropylene, mix and extrude granulation on twin-screw extruder, injection molding sample preparation, test performance , and the results are also shown in Table 1. In the comparative example, the components were mixed and directly used for flame-retardant modification of the material without being coated with a barrier material. They were mixed and extruded on a twin-screw extruder for granulation, injection molding samples, and performance tests.

Embodiment 10-15 and comparative example 3-4

[0029] See Table 2. Melamine phosphate, triazine derivatives, nanocomposite materials, phosphonate esters, fillers, antioxidants, etc. were weighed and mixed according to the data listed in Table 2. Then impregnate the mixture in a toluene solvent containing methylphenyl silicone resin, after drying, mix with polypropylene, mix and extrude pellets on a twin-screw extruder, make samples by injection molding, and test performance. The results are also shown in the table 2. In the comparative example, the components were mixed and directly used for flame retardant modification of the material without being coated with a barrier material. They were mixed and extruded on a twin-screw extruder for granulation, injection molding samples, and performance tests.

Embodiment 16-22

[0031] See Table 3. Melamine phosphate, triazine derivatives, nanocomposite materials, phosphonate esters, fillers, antioxidants, etc. were weighed and mixed according to the data listed in Table 3. Then the mixture was immersed in toluene solvent containing allyl resin, after drying, it was compounded with polypropylene, mixed and extruded on a twin-screw extruder to granulate, injection molded, and tested for performance. The results are also shown in Table 3.

[0032] From the data listed in the Examples and Comparative Examples in Table 1, Table 2 and Table 3, it can be seen that the flame retardant of the present invention has better flame retardancy and water resistance.

[0033]

[0034]

[0035]

[0036]

[0037]

[0038]

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Abstract

The invention relates to a non-halogen, water resistant and expanding type phosphorus nitrogen flame retardant used for polyolefine. The phosphorus nitrogen flame retardant is characterized in that according to the weight percentage, the flame retardant comprises melamine phosphate which occupies 20 percent to 80 percent, triazine derivative which occupies 5 percent to 40 percent, nanometer compound material which occupies 1 percent to 15 percent, phosphonate ester which occupies 10 percent to 20 percent, padding which occupies 0.1 percent to 8 percent and antioxidant which occupies 0.1 percent to 5 percent. The flame retardant adopts the preparation method that the components are mixed, the mixture is coated through the polymer with barrier property, and the integrated modification of the flame retardant is realized. Compared with the prior general non-halogen and expanding type flame retardant, the non-halogen, water resistant and expanding type phosphorus nitrogen flame retardant used for polyolefine has the advantages that the flame retardance is better, the water resistance is greatly improved, the compatibility between the flame retardant and the plastic matrix is good, and the mechanical property and the processing property of the polyolefine are not affected.

Description

technical field [0001] The invention relates to a flame retardant used in the compounding of polyolefin materials and a preparation method thereof, which is a halogen-free water-resistant expansion type phosphorus-nitrogen flame retardant meeting environmental protection requirements. Background technique [0002] For the consideration of environmental protection, the current flame retardant technology in polymer compounding tends to use halogen-free flame retardants. The traditional halogen-free intumescent flame retardants based on ammonium polyphosphate (APP) have a good effect on polypropylene. It has many advantages such as less smoke, low toxicity, and no harmful gas precipitation when it is heated and burned. But its disadvantages are strong polarity, poor compatibility with polypropylene, and easy moisture absorption, which affects the weather resistance, use performance and processing performance of polypropylene. Therefore, how to improve the performance of haloge...

Claims

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Application Information

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IPC IPC(8): C08L23/00C08K5/5333C08K5/521C08K7/00
Inventor 郝东梅刘彦明尹亮陈崇伟
Owner SHANGHAI RES INST OF CHEM IND
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