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Preparation method of melamine cyanurate (MCA) flame retardant and application of MCA flame retardant in PA6

A technology of melamine cyanurate and melamine, which is applied in the field of preparation of melamine cyanurate flame retardant, can solve the problems of long reaction time, compatibility and thermal stability of MCA and PA6, etc. efficiency, improve flame retardant efficiency, and improve compatibility

Inactive Publication Date: 2020-04-21
山东东信新材料科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the use of MCA alone is not as effective as the addition of phosphorus-based flame retardants and halogen-based flame retardants, and it is more widely used. In addition, the viscosity of the reactants increases rapidly from the preparation of MCA to the late stage of the reaction, making it difficult to continue the reaction, resulting in a long reaction time. , and the compatibility and thermal stability of MCA and PA6 still need to be improved

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] A kind of preparation method of melamine cyanurate (MCA) flame retardant, comprises the following steps:

[0017] (1) Add deionized water into the container, then add melamine and stir evenly, then add cyanuric acid, sodium dodecylbenzenesulfonate and antimony trioxide, mix and stir evenly, raise the temperature of the material to 95°C, and keep This temperature reaction finishes after carrying out 2h, obtains the viscous paste of melamine cyanurate;

[0018] (2) Cool down to normal temperature and pressure, and then carry out suction filtration, drying and pulverization of the above-mentioned paste to obtain the melamine cyanurate flame retardant.

[0019] The molar ratio of melamine to cyanuric acid is 1:1. The sodium dodecylbenzenesulfonate accounts for 3% of the mass of melamine, and the antimony trioxide accounts for 0.5% of the mass of melamine. The amount of deionized water added is 7 times the total mass of melamine, cyanuric acid, sodium dodecylbenzenesulfona...

Embodiment 2

[0021] A kind of preparation method of melamine cyanurate (MCA) flame retardant, comprises the following steps:

[0022] (1) Add deionized water into the container, then add melamine and stir evenly, then add cyanuric acid, sodium dodecylbenzenesulfonate and antimony trioxide, mix and stir evenly, raise the temperature of the material to 95°C, and keep This temperature reaction finishes after carrying out 2h, obtains the viscous paste of melamine cyanurate;

[0023] (2) Cool down to normal temperature and pressure, and then carry out suction filtration, drying and pulverization of the above-mentioned paste to obtain the melamine cyanurate flame retardant.

[0024] The molar ratio of melamine to cyanuric acid is 1:1. The sodium dodecylbenzenesulfonate accounts for 3% of the mass of melamine, and the antimony trioxide accounts for 0.6% of the mass of melamine. The amount of deionized water added is 12 times the total mass of melamine, cyanuric acid, sodium dodecylbenzenesulfon...

Embodiment 3

[0026] A kind of preparation method of melamine cyanurate (MCA) flame retardant, comprises the following steps:

[0027] (1) Add deionized water into the container, then add melamine and stir evenly, then add cyanuric acid, sodium dodecylbenzenesulfonate and antimony trioxide, mix and stir evenly, raise the temperature of the material to 95°C, and keep This temperature reaction finishes after carrying out 2h, obtains the viscous paste of melamine cyanurate;

[0028] (2) Cool down to normal temperature and pressure, and then carry out suction filtration, drying and pulverization of the above-mentioned paste to obtain the melamine cyanurate flame retardant.

[0029] The molar ratio of melamine to cyanuric acid is 1:1. The sodium dodecylbenzenesulfonate accounts for 2% of the mass of melamine, and the antimony trioxide accounts for 0.8% of the mass of melamine. The amount of deionized water added is 10 times the total mass of melamine, cyanuric acid, sodium dodecylbenzenesulfon...

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Abstract

The invention discloses a preparation method of a melamine cyanurate (MCA) flame retardant and application of the MCA flame retardant in PA6. The invention belongs to the technical field of flame retardant production. The preparation method of the melamine cyanurate (MCA) flame retardant comprises the following steps: adding deionized water into a container, then adding melamine, uniformly stirring, then adding cyanuric acid, sodium dodecyl benzene sulfonate and antimonous oxide, uniformly mixing and stirring, raising the temperature of the materials to 95 DEG C, maintaining the temperature, and reacting for 2 hours to finish the reaction, so as to obtain a viscous paste of melamine cyanurate; and cooling to normal temperature and normal pressure, and then carrying out suction filtration,drying and crushing treatment on the paste to obtain the melamine cyanurate flame retardant. Sodium dodecyl benzene sulfonate and antimonous oxide are added in the synthesis process of melamine and cyanuric acid to serve as modifiers, so that the compatibility of MCA and PA6 is improved, the viscosity of the reaction system is reduced, and the flame retardant efficiency and the thermal stability of the flame retardant can be well improved.

Description

technical field [0001] The invention relates to the technical field of flame retardant production, in particular to a preparation method of a melamine cyanurate (MCA) flame retardant and its application in PA6. Background technique [0002] Melamine cyanurate is a salt synthesized from melamine and cyanuric acid. It belongs to nitrogen series flame retardants and has two forms of powder and granules. It acts as a protective material, heat insulation and oxygen barrier. Adding this product can greatly reduce the smoke density and toxic gas of the polymer without producing irritating hydrogen halide gas. It can be used for the barrier of various polymers, especially nylon polymer materials. Flame retardant is a new type of high-efficiency additive flame retardant for polyamide, which has the advantages of low toxicity and low smoke, and caters to the current development trend of flame retardants in the direction of high efficiency and low toxicity. MCA changed the process of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08K5/3492C08K3/22C08K5/42C08L77/02
CPCC08K3/2279C08K5/34928C08K5/42C08L77/02C08L2201/02C08L2201/08
Inventor 叶以权郭安鹏曹珮如王传涛刘冰洋
Owner 山东东信新材料科技股份有限公司
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