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Polyamide composite material and preparation method thereof

A composite material and polyamide technology, applied in the field of composite materials, can solve problems such as limiting the application range of MCA, and achieve the effects of excellent flame retardant synergy, accelerated self-extinguishing, and simple process

Active Publication Date: 2013-11-27
SHENZHEN YATAIXING IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, MCA flame retardant polyamides will have a wick effect in polyamides containing glass fibers or fillers, which slows down the melting and dripping of materials when they burn, and can only achieve V2 or even HB flame retardant grades, which greatly limits the use of MCA Areas of application in polyamides

Method used

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  • Polyamide composite material and preparation method thereof

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Effect test

Embodiment 1

[0026] The polyamide composite material provided by the embodiment of the present invention comprises the following components by weight percentage: polyamide 71.5%, reinforcing agent 5%, halogen-free flame retardant 20%, synergistic flame retardant 2%, initiator 0.5% , other additives 1%. See the second column of Table 1 for specific components and weight percentages.

[0027] When preparing polyamide composite materials, first weigh each component according to the above weight percentage, then put polyamide, halogen-free flame retardant, synergistic flame retardant, initiator and other additives into the twin-screw extruder for mixing, Through melt extrusion and granulation, the reinforcing agent is fed from the side. The working parameters of the twin-screw extruder are: the temperature of the first zone is 240-270°C, the temperature of the second zone is 250-280°C, the temperature of the third zone is 260-290°C, the temperature of the fourth zone is 250-280°C, the tempera...

Embodiment 2

[0029] The polyamide composite material provided by the embodiment of the present invention comprises the following components by weight percentage: polyamide 67.1%, reinforcing agent 12%, halogen-free flame retardant 18%, synergistic flame retardant 1.5%, initiator 0.4% , other additives 1%. See the third row of Table 1 for specific components and weight percentages.

[0030] The preparation method is the same as in Example 1.

Embodiment 3

[0032] The polyamide composite material provided by the embodiment of the present invention comprises the following components by weight percentage: polyamide 56.1%, reinforcing agent 30%, halogen-free flame retardant 12%, synergistic flame retardant 0.8%, initiator 0.1% , other additives 1%. See Table 1, column 4 for specific components and weight percentages.

[0033] The preparation method is the same as in Example 1.

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Abstract

The invention is applicable to the technical field of composite materials, and provides a polyamide composite material and a preparation method thereof. The polyamide composite material comprises the following components in percentage by weight: 40-90 percent of polyamide, 1-40 percent of intensifier, 5-20 percent of halogen-free flame retardant, 0.5-2 percent of synergetic flame retardant, 0.1-0.5 percent of initiator, and 0.5-2 percent of other auxiliaries. According to the composite material, the synergetic flame retardant and the initiator are compatible, so that an excellent flame-retardant synergetic effect can be played in a polyamide MCA (melamine cyanurate) flame-retardant system, the self-extinguishing of a burning material can be accelerated, other matters can be prevented from being burnt due to material dripping. Therefore, the method for preparing the polyamide composite material is simple.

Description

technical field [0001] The invention belongs to the technical field of composite materials, and relates to a polyamide composite material and a preparation method thereof. Background technique [0002] Flame-retardant reinforced polyamide not only has high rigidity, high strength, excellent dimensional accuracy and stability and low warpage, good chemical resistance and physical properties, is minimally affected by water absorption, good surface quality, and easy to form Features, widely used in various electronic and electrical products and auto parts. At present, nearly 95% of the flame retardants used in flame-retardant reinforced polyamides are halogen-containing flame retardants. Due to the high efficiency and small amount of bromine-containing flame retardants, the impact on the performance of the material is small, and the price is moderate. It is unmatched by other flame retardants, so 70% to 80% of my country's electrical and electronic products for export use this ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L77/00C08L77/02C08L77/06C08L29/04C08K13/04C08K7/14B29B9/06B29C47/92B29C48/92
CPCB29B7/90B29B9/14B29C48/04C08K5/0066C08K7/14C08L29/04C08L77/02C08L77/06C09K21/10
Inventor 徐东徐永杨海灵
Owner SHENZHEN YATAIXING IND
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