Preparation method of flame-retardant polypropylene material

A flame retardant polypropylene and polypropylene technology is applied in the field of preparation of flame retardant polypropylene materials, which can solve the problems affecting the weather resistance of materials, residual peroxides, etc. Effect

Active Publication Date: 2020-12-29
会通新材料(上海)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the addition of peroxide cooling masterbatches in the preparation of flame-retardant polypropylene materials effectively improves the fluidity of the formula system and helps to improve the system The flame retardant effect improves the flame retardancy of the material, but due to the residual peroxide during processing, it affects the weather resistance of the material

Method used

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  • Preparation method of flame-retardant polypropylene material

Examples

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Comparison scheme
Effect test

Embodiment 1

[0032] A preparation method of flame-retardant polypropylene material, comprising the following steps:

[0033] S1. Fully mix K800386 parts, 0.1 parts of peroxide masterbatch, 0.3 parts of antioxidant, and 0.3 parts of lubricant in a high-mixing pot, and melt, plasticize and blend the obtained mixture A through a twin-screw extruder , then extrude and granulate to obtain polymer particles B, the used twin-screw extruder L:D=35:1, the rotating speed of the screw is 400r / min, the feeding speed 12rpm, the temperature in each district of the extruder is set to : Zone 1 200°C, Zone 2 180°C, Zone 3 180°C, Zone 4 185°C, Zone 5 180°C, Zone 6 185°C, Zone 7 180°C, Zone 8 180°C, Zone 9 180°C, Zone 10 160°C ;

[0034] S2. Premix the polymer particle B obtained after pretreatment with 14 parts of flame retardant, 0.2 part of antioxidant, 0.3 part of lubricant, 0.3 part of light stabilizer, and 0.6 part of carbon black in a high-mixing pot , the time of mixing is 10min, obtains mixture C,...

Embodiment 2

[0036] The specific operation was carried out as in Example 1, except that the mass fraction of the flame retardant added in step S2 was 20 parts.

Embodiment 3

[0038] The specific operation is carried out according to Example 1, except that the mass fraction of the peroxide masterbatch added in step S1 is 0.4 parts.

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Abstract

The invention discloses a preparation method of a flame-retardant polypropylene material, the flame-retardant polypropylene material comprises the following raw materials in parts by weight: 80-86 parts of polypropylene, 14-20 parts of a flame retardant, 0.1-0.8 part of peroxide master batch, 0.1-0.5 part of an antioxidant, 0.1-0.5 part of a lubricant, 0.1-0.5 part of a light stabilizer and 1-2 parts of carbon black, and the preparation method of the flame-retardant polypropylene material comprises the following steps: S1, adding polypropylene, peroxide master batch, the antioxidant and the lubricant into a high-speed mixing pot, fully mixing, melting by a double-screw extruder, plasticizing, blending, extruding and granulating to obtain polymer particles; and S2, adding the polymer particles, the flame retardant, the antioxidant, the lubricant, the light stabilizer and carbon black into a high-speed mixing pot for premixing, melting through the double-screw extruder, performing extrusion granulation after blending, and drying to obtain the flame-retardant polypropylene material. The flame-retardant polypropylene material is prepared through a two-step method, the flame retardanceof the polypropylene material is effectively improved, meanwhile, the content of residual peroxide in the material is low, and the weather resistance is high.

Description

technical field [0001] The invention relates to the field of polymer materials, in particular to a method for preparing a flame-retardant polypropylene material. Background technique [0002] As one of the five general-purpose resin materials, polypropylene material is widely used in packaging, electronic appliances and other fields because of its light weight and easy processing. However, since the oxygen index of polypropylene material is about 17-18%, it is a kind of flammable material, so there are restrictions on its use in many application places. Polypropylene materials can be divided into homopolymerization type and copolymerization type. Among them, homopolypropylene has poor toughness, especially when subjected to low-temperature impact, the punched parts are easy to crack, but it has good fluidity and high tensile strength. It is also easier to carry out flame retardant modification. Copolymerized polypropylene improves low-temperature impact performance and has...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/14C08L23/10C08K13/02C08K5/14C08K3/22C08K3/04C08K5/06C08J3/22
CPCC08L23/14C08L2201/02C08K2201/011C08J3/226C08J2423/10C08K5/14C08L23/10C08K13/02C08K3/2279C08K3/04C08K5/06
Inventor 宋世超邢纪普吴摞李荣群
Owner 会通新材料(上海)有限公司
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