Coated flame retardant and preparation method thereof

A kind of flame retardant and coated technology, which is applied in the field of coated flame retardants and their preparation, can solve the problems of long heating time of flame retardants, affecting the appearance of products, unacceptable to users, etc., and achieves strong polarity and melting point Low, improve the effect of thermal decomposition

Inactive Publication Date: 2020-05-19

GUANGDONG IND TECHN COLLEGE

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AI-Extracted Technical Summary

Problems solved by technology

However, due to the addition of flame retardants, the flame retardants are heated for a long time during the preparation process, and the shearing effect is strong, and the flame retardants will be decomposed to varying degrees, resulting in the prepared composite materials being ine...

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Abstract

The invention discloses a coated flame retardant. The metal salt of the ethylene-acrylic acid copolymer is mainly used as the coating resin and has excellent compatibility with the flame-retardant component (especially the metal salt flame-retardant component), so that the thermal decomposition of the flame retardant in the processing process of the flame-retardant component can be improved, and the toughness of the flame-retardant modified plastic can also be improved.

Technology Topic

ChemistryFire retardant +8

Examples

Experimental program(1)
Effect test(1)

Example Embodiment

[0024] The present invention will be described in detail below in conjunction with specific embodiments. The following examples will help those skilled in the art to further understand the present invention, but do not limit the present invention in any form. It should be pointed out that for those of ordinary skill in the art, a number of modifications and improvements can be made without departing from the concept of the present invention. These all belong to the protection scope of the present invention.

[0025] The sources of raw materials used in the present invention are as follows:

[0026] PBT: L09XM, Jiangsu Heshili New Material Co., Ltd., with a viscosity of 0.93dl/g;

[0027] Polyamide: PA6, molecular weight is about 25,000.

[0028] Coating flame retardant A: diethyl aluminum hypophosphite; coating resin is ethylene-methacrylic acid copolymer sodium salt, melt index is 1.1g/10min (190℃, 2.16kg), melting point is 96℃, commercially available . The weight content of the coating resin is 20%.

[0029] Coated flame retardant B: melamine phosphate; coating resin is ethylene-methacrylic acid copolymer sodium salt; melt index is 1.1g/10min (190℃, 2.16kg), melting point is 96℃, commercially available. The weight content of the coating resin is 20%.

[0030] Coated flame retardant C: diethyl aluminum hypophosphite; coating resin is ethylene-ethyl acrylic acid copolymer zinc salt, melt index is 4.5g/10min (190℃, 2.16kg), melting point is 85℃, commercially available . The weight content of the coating resin is 20%.

[0031] Coating flame retardant D: diethyl aluminum hypophosphite; coating resin is ethylene-butyl acrylic copolymer magnesium salt, melt index is 1.3g/10min (190℃, 2.16kg), melting point is 88℃, commercially available . The weight content of the coating resin is 20%.

[0032] Coated flame retardant E: diethyl aluminum hypophosphite; coating resin is ethylene-methacrylic acid copolymer, and the weight content of methacrylic acid monomer is 20%.

[0033] Glass fiber: CPIC ECS305K;

[0034] Antioxidant: hindered phenolic antioxidant.

[0035] The preparation method of the coated flame retardant is as follows: the flame retardant ingredients and the coated resin are extruded and pelletized through a twin-screw extruder to obtain the coated flame retardant. The screw temperature range is 150~200℃, and the screw speed is 200 -250 rpm.

[0036] The preparation method of the flame-retardant modified plastic: mix the polymer (PBT, PA6), the coated flame retardant, and the auxiliary (comparative example file 2 additionally adds the sodium salt of ethylene-methacrylic acid copolymer) and pass the twin screw. The extruder extrudes and granulates to obtain the flame-retardant modified plastic. Glass fiber side feeding, the temperature range of the screw is: PBT 230~250℃, polyamide 230-280℃, 300~600rpm.

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PUM

Property	Measurement	Unit
Melt index	1.1	g/10min
Melt index	4.5	g/10min
Melt index	1.3	g/10min
tensile		MPa
Particle size		Pa
strength	10

Description & Claims & Application Information

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Classification and recommendation of technical efficacy words

Strong polarity
Low melting point

Coated flame retardant and preparation method thereof

AI-Extracted Technical Summary

Problems solved by technology

Abstract

Examples

Example Embodiment

PUM

Description & Claims & Application Information

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