Expanded flame-retardant plastic preparation method

A technology of intumescent flame retardant and plastic, which is applied in the field of flame retardant plastic preparation and can solve problems such as application safety hazards

Inactive Publication Date: 2018-02-09
马迎春
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Plastic products are flammable, which brings many hidden dangers to the application safety of their products

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] According to the proportion: polypropylene 40%-50%, ricinoleic acid 10%-15%, carbon black 10%-15%, expanded graphite 20%-30% and red phosphorus 10%-15%, take out each component, the total The weight is 100kg, spare.

[0018] The preparation method is:

[0019] 1. Mix polypropylene and red phosphorus according to the ratio of 4:1. After fully mixing, use a flat twin-screw extruder to extrude and granulate at 180°C and a pressure of 5 MPa. Base material A;

[0020] 2. Add ricinoleic acid to the base material A according to the ratio of 5:1, stir well, so that the base material A is evenly covered with ricinoleic acid;

[0021] 3. Add carbon black and expanded graphite to base material A covered with ricinoleic acid and stir fully;

[0022] Ricinoleic acid is used in the preparation of surfactants, plasticizers, lubricating oil additives, and also in the preparation of sebacic acid, heptanoic acid, etc. Therefore, the effect of ricinoleic acid can make carbon black and...

Embodiment 2

[0027] According to the proportion: polypropylene 40%-50%, ricinoleic acid 10%-15%, carbon black 10%-15%, expanded graphite 20%-30% and red phosphorus 10%-15%, take out each component, the total The weight is 100kg, spare.

[0028] The preparation method is:

[0029] 1. Mix polypropylene and red phosphorus according to the ratio of 4:1. After fully mixing, use a flat twin-screw extruder to extrude and granulate at 210°C and a pressure of 10 MPa. Base material A;

[0030] 2. Add ricinoleic acid to the base material A according to the ratio of 5:1, stir well, so that the base material A is evenly covered with ricinoleic acid;

[0031] 3. Add carbon black and expanded graphite to base material A covered with ricinoleic acid and stir fully;

[0032] Ricinoleic acid is used in the preparation of surfactants, plasticizers, lubricating oil additives, and also in the preparation of sebacic acid, heptanoic acid, etc. Therefore, the effect of ricinoleic acid can make carbon black an...

Embodiment 3

[0037] According to the proportion: polypropylene 40%-50%, ricinoleic acid 10%-15%, carbon black 10%-15%, expanded graphite 20%-30% and red phosphorus 10%-15%, take out each component, the total The weight is 100kg, spare.

[0038] The preparation method is:

[0039] 1. Mix polypropylene and red phosphorus according to the ratio of 4:1. After fully mixing, use a flat twin-screw extruder to extrude and granulate at 195°C and a pressure of 8 MPa. Base material A;

[0040] 2. Add ricinoleic acid to the base material A according to the ratio of 5:1, stir well, so that the base material A is evenly covered with ricinoleic acid;

[0041] 3. Add carbon black and expanded graphite to base material A covered with ricinoleic acid and stir fully;

[0042] Ricinoleic acid is used in the preparation of surfactants, plasticizers, lubricating oil additives, and also in the preparation of sebacic acid, heptanoic acid, etc. Therefore, the effect of ricinoleic acid can make carbon black and...

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Abstract

The invention relates to a method for preparing an intumescent flame-retardant plastic. The components of the intumescent flame-retardant plastic include polypropylene, ricinoleic acid, carbon black, expanded graphite and red phosphorus. The proportions in the total mass are: 40%-50% of polypropylene, 10%-15% of ricinoleic acid, 10%-15% of carbon black, 20%-30% of expanded graphite and 10%-15% of red phosphorus. In addition to its own non-combustibility, the present invention puts more emphasis on preventing combustion, that is, making a fuss about another substance oxygen under the condition of combustion. The present invention expands rapidly when it encounters fire, encloses the flame point in it and discharges the surrounding air. , Extinct the existence of the surrounding air, and stop the occurrence of fire in a physical sense.

Description

technical field [0001] The invention relates to a method for preparing flame-retardant plastics, in particular to a method for preparing expanded flame-retardant plastics. Background technique [0002] The United States is one of the countries with relatively sound flame retardant technical regulations in the world. It has made flame retardant regulations on public entertainment and all aspects of daily life. For example, the United States has made regulations on the flame retardant performance of children's pajamas and general clothing. . Canada, Australia, and the United Kingdom have also formulated relevant technical regulations, such as requirements for the flame retardant performance of children's evening wear, and the United Kingdom also has regulations on the flame retardant performance of adult evening wear, and stipulates test methods. However, our country is still blank in this regard, and has only formulated mandatory national standards for flame-retardant clothi...

Claims

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Application Information

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Patent Type & AuthorityApplications(China)
IPC IPC(8): C08L23/12C08K13/04C08K3/02C08K3/04C08K7/24C08K5/09
CPCC08K13/04C08K3/02C08K3/04C08K5/09C08K7/24C08K2003/026C08L2201/02C08L23/12
Inventor马迎春
Owner马迎春