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Halogen-free flame-retardant nylon material and preparation method thereof

A technology of flame retardant nylon and flame retardant, applied in the field of halogen-free flame retardant nylon materials and its preparation, can solve the problems of polluting mold production, reducing production efficiency, increasing cooling time, etc., to accelerate carbonization speed, improve work efficiency, Cooldown reduction effect

Active Publication Date: 2021-02-26
青岛瑞益信新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, MCA flame retardant nylon has the following shortcomings in the production and application process: 1. MCA flame retardant small molecular substances will always precipitate during the heating process, and the appearance of some small molecular substances will pollute the mold and affect production
2. During the dripping process, there will be flames, and the dripping substances have a lot of heat, which is easy to ignite many flammable substances
3. MCA flame retardant nylon is a modified flame retardant nylon made of pure nylon raw material and MCA flame retardant. The addition of this organic substance will delay the crystallization speed of nylon, making it necessary to increase the cooling time in the production process to maintain A good molding process of the product reduces the production efficiency

Method used

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  • Halogen-free flame-retardant nylon material and preparation method thereof
  • Halogen-free flame-retardant nylon material and preparation method thereof
  • Halogen-free flame-retardant nylon material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Such as figure 1 As shown, a halogen-free flame-retardant nylon material is prepared from the following raw materials in parts by weight: 5.7 parts of PA668, 5 parts of PA6, 0.2 parts of antioxidant, 0.2 parts of dispersant, and 0.5 parts of synergistic combustion enhancer 0.2 parts, 0.2 parts of nucleating agent, 8 parts of MCA flame retardant, 0.2 parts of amorphous a-olefin copolymer emulsion, synergistic combustion promoter is nano-silica, the particle size of nano-silica is controlled at 5-30nm, Among them, the influence of the particle size of nano-silica on the physical properties of halogen-free flame-retardant nylon materials is shown in the table below. When the particle size of nano-silica is controlled at 30nm, the tensile strength, bending strength and impact strength of nylon materials Charpy notched has the best physical properties.

[0038]

[0039] In this embodiment, the model of the high-speed mixer is SHR-100a, the model of the high-speed mixer i...

Embodiment 2

[0056] Such as figure 1 As shown, a halogen-free flame-retardant nylon material is prepared from the following raw materials in parts by weight: 5.7 parts of PA668, 5 parts of PA6, 0.2 parts of antioxidant, 0.2 parts of dispersant, and 0.5 parts of synergistic combustion enhancer 0.2 parts, 0.2 parts of nucleating agent, 8 parts of MCA flame retardant, 0.2 parts of amorphous a-olefin copolymer emulsion, synergistic combustion promoter is nano-silica, the particle size of nano-silica is controlled at 50-90nm, Among them, the effect of the particle size of nano-silica on the physical properties of halogen-free flame-retardant nylon materials is shown in the table below. When the particle size of nano-silica is controlled at 70nm, the tensile strength, bending strength and impact strength of nylon materials Charpy notched has the best physical properties.

[0057]

[0058] In this embodiment, the model of the high-speed mixer is SHR-100a, the model of the high-speed mixer is ...

Embodiment 3

[0074] Such as figure 1 As shown, a halogen-free flame-retardant nylon material is prepared from the following raw materials in parts by weight: 5.7 parts of PA668, 5 parts of PA6, 0.2 parts of antioxidant, 0.2 parts of dispersant, and 0.5 parts of synergistic combustion enhancer 0.2 parts, 0.2 parts of nucleating agent, 8 parts of MCA flame retardant, 0.2 parts of amorphous a-olefin copolymer emulsion, synergistic combustion promoter is nano-silica, the particle size of nano-silica is controlled at 120-150nm, Among them, the influence of the particle size of nano-silica on the physical properties of halogen-free flame-retardant nylon materials is shown in the table below. When the particle size of nano-silica is controlled at 120nm, the tensile strength, bending strength and impact strength of nylon materials Charpy notched has the best quality of physical properties.

[0075]

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Abstract

The invention provides a halogen-free flame-retardant nylon material and a preparation method thereof. The halogen-free flame-retardant nylon material is prepared from, by weight, 60-90 parts of PA66,5-12 parts of PA6, 0.2-1 part of antioxidant, 0.2-1 part of dispersing agent, 0.5-2 parts of synergistic combustion improver, 0.2-1 part of nucleating agent, 8-13 parts of MCA flame retardant and 0.2-1 part of amorphous aolefin copolymer emulsion, the synergistic combustion improver is nano-silica, the particle size of nano-silica is 70nm, by adding the nano silicon dioxide, on one hand, the nanoeffect of the nano silicon dioxide is exerted, the nano silicon dioxide and the MCA flame retardant act together, the carbonization speed of the nylon is increased, on the other hand, inorganic substances with nano particle sizes are good nucleating agents for the nylon, and on the other hand, the amorphous aolefin copolymer emulsion is added, so that the nylon and the MCA flame retardant are well connected. The method has the advantages that 1, the possibility of precipitation of small molecular substances of the MCA flame retardant is reduced; 2, the possibility of ignition of inflammable substances during dripping is reduced; and 3, the crystallization speed of nylon is increased when the MCA flame retardant is added.

Description

technical field [0001] The invention belongs to the field of flame-retardant modification of nylon materials, in particular to a halogen-free flame-retardant nylon material and a preparation method thereof. Background technique [0002] Nylon material itself has certain flame retardant properties, but in industries such as household appliances and electronic appliances that require high flame retardant performance, the flame retardant performance of nylon itself can no longer meet the existing use requirements. The flame retardant modification of nylon materials is usually divided into For flame retardant modification containing halogen and non-halogen flame retardant modification, in flame retardant nylon, most of the flame retardant additives are halogen-containing compounds. , applications and the secondary disasters brought about by the environment. Halogen-free flame retardants can make the flame-retardant materials have a better overall balance in performance and othe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L77/06C08L77/02C08L23/02C08K13/02C08K3/36C08K5/103C08K5/3492
CPCC08L77/06C08K2201/011C08K2201/003C08L2201/02C08L2201/22C08L77/02C08L23/02C08K13/02C08K3/36C08K5/103C08K5/34928
Inventor 朱春林
Owner 青岛瑞益信新材料科技有限公司
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