PP flame-retardant plastic

A technology of flame-retardant plastics and flame retardants, which is applied in the field of PP flame-retardant plastics, can solve the problems of self-performance degradation, poor flame retardancy, and poor cold resistance of PP plastics, and achieve the effect of improving oxidation resistance

Inactive Publication Date: 2020-12-29
卓开权
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Existing PP plastics have poor flame retardancy. When burning, the surface flame cannot be extinguished quickly, and a large amount of drippings will be generated when burning, which is easy to cause secondary combustion, and its own cold resistance is poor. Under low temperature conditions, If used for a long time, its performance will decrease and it will be easily broken

Method used

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  • PP flame-retardant plastic
  • PP flame-retardant plastic
  • PP flame-retardant plastic

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] A PP flame-retardant plastic, made of the following raw materials in parts by weight: 80 parts of polypropylene, 2 parts of flame retardant, 3 parts of liquid paraffin, 3 parts of plasticizer, and 3 parts of phenyl o-hydroxybenzoate;

[0039] The PP flame retardant plastic is made by the following steps:

[0040] Step S1: stirring the polypropylene and liquid paraffin for 10 min at a rotational speed of 300 r / min to obtain a first mixture;

[0041] Step S2: Stir the flame retardant and phenyl o-hydroxybenzoate for 3 minutes at a rotational speed of 500 r / min, add a plasticizer, and continue stirring for 10 minutes to obtain the secondary mixture;

[0042]Step S3: melting and stirring the first mixed material and the second mixed material for 30 minutes at a rotation speed of 1000 r / min and a temperature of 160° C. to obtain a molten material;

[0043] Step S4: Put the molten material into a three-stage twin-screw extruder, extrude and cool and pelletize under the condi...

Embodiment 2

[0053] A PP flame-retardant plastic, made of the following raw materials in parts by weight: 85 parts of polypropylene, 3 parts of flame retardant, 4 parts of liquid paraffin, 4 parts of plasticizer, and 4 parts of phenyl o-hydroxybenzoate;

[0054] The PP flame retardant plastic is made by the following steps:

[0055] Step S1: Stir the polypropylene and liquid paraffin for 13 minutes at a rotational speed of 400 r / min to obtain a first mixture;

[0056] Step S2: Stir the flame retardant and phenyl o-hydroxybenzoate for 4 minutes at a rotational speed of 600 r / min, add a plasticizer, and continue stirring for 13 minutes to obtain the secondary mixture;

[0057] Step S3: melting and stirring the first mixed material and the second mixed material for 35 minutes at a rotation speed of 1100 r / min and a temperature of 170° C. to obtain a molten material;

[0058] Step S4: Put the molten material into a three-stage twin-screw extruder, extrude and cool and pelletize under the cond...

Embodiment 3

[0068] A PP flame-retardant plastic, made of the following raw materials in parts by weight: 90 parts of polypropylene, 4 parts of flame retardant, 4 parts of liquid paraffin, 4 parts of plasticizer, and 4 parts of phenyl o-hydroxybenzoate;

[0069] The PP flame retardant plastic is made by the following steps:

[0070] Step S1: stirring the polypropylene and liquid paraffin for 15 minutes at a rotational speed of 400 r / min to obtain a first mixture;

[0071] Step S2: Stir the flame retardant and phenyl o-hydroxybenzoate for 4 minutes at a rotational speed of 700 r / min, add a plasticizer, and continue stirring for 15 minutes to obtain a secondary mixture;

[0072] Step S3: melting and stirring the first mixture and the second mixture for 30-40 minutes under the conditions of a rotating speed of 1000-1200 r / min and a temperature of 160-180° C. to obtain a molten material;

[0073] Step S4: Put the molten material into a three-stage twin-screw extruder, extrude and cool and pel...

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Abstract

The PP flame-retardant plastic is prepared from the following raw materials in parts by weight: 80-100 parts of polypropylene, 2-5 parts of a flame retardant, 3-5 parts of a dispersing agent, 3-5 parts of a plasticizer and 3-5 parts of an anti-aging agent. A flame retardant is prepared and can generate phosphoric acid and polyphosphoric acid, the nitrogen element of the flame retardant can accelerate the phosphorylation reaction, the generation amount of the phosphorus-rich carbon residues is improved, and then a compact carbon layer is formed on the surface of a polymer, insulates oxygen andheat and acts in a condensed phase; various nitrogen-containing volatile matters such as nitrogen, oxynitride and water vapor can be generated after combustion and decomposition, so that the concentration of combustible gas is reduced, reaction heat absorption is performed to reduce the temperature of the material, a coke layer is quickly expanded, a flame-retardant effect is achieved, a crackingcarbon layer is formed on the surface of a polymer during combustion of an organic silicon carrier, and the oxidation resistance of the cracking carbon layer is improved; therefore, the flame-retardant effect is achieved.

Description

technical field [0001] The invention belongs to the technical field of plastic preparation, and in particular relates to a PP flame-retardant plastic. Background technique [0002] Polypropylene is a colorless, odorless, non-toxic, translucent solid substance. Polypropylene is a thermoplastic synthetic resin with excellent performance. It is a colorless and translucent thermoplastic lightweight general-purpose plastic with chemical resistance and heat resistance. properties, electrical insulation, high-strength mechanical properties and good high wear-resistant processing properties, etc., which makes polypropylene rapidly used in machinery, automobiles, electronic appliances, construction, textiles, packaging, agriculture, forestry, fishery and food industries, etc. Many fields have been widely developed and applied. In recent years, with the rapid development of packaging, electronics, automobiles and other industries, polypropylene materials are gradually replacing wooden...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08L91/06C08L71/02C08L83/10C08G77/445C08G77/26C08G77/06
CPCC08G77/06C08G77/26C08G77/445C08L23/12C08L2201/02C08L2205/035C08L91/06C08L71/02C08L83/10
Inventor 卓开权
Owner 卓开权
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