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Halogen-free flame retardant nylon 6 with high heat resistance as well as preparation method and application thereof

A flame retardant nylon, high heat resistance technology, applied in the field of modified plastics, can solve the problems of low flame retardant efficiency of halogen-free flame retardants, poor mechanical properties of materials, poor compatibility of nylon 6, etc. Water absorption, good synergistic flame retardant effect

Active Publication Date: 2014-06-18
GUANGZHOU SUPER DRAGON ENG PLASTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, compared with brominated flame retardant systems, which are highly efficient in flame retardancy and have good compatibility with resins, halogen-free flame retardants have disadvantages such as low flame retardant efficiency and poor compatibility with nylon 6. In order to achieve a higher flame retardant grade, A large amount of addition is likely to cause problems such as processing difficulties and poor mechanical properties of materials

Method used

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  • Halogen-free flame retardant nylon 6 with high heat resistance as well as preparation method and application thereof
  • Halogen-free flame retardant nylon 6 with high heat resistance as well as preparation method and application thereof
  • Halogen-free flame retardant nylon 6 with high heat resistance as well as preparation method and application thereof

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Experimental program
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Effect test

Embodiment 1

[0044] A preparation method of high heat-resistant halogen-free flame-retardant nylon 6, comprising the following steps:

[0045] (1) Weigh raw materials according to the amount of coupling agent, halogen-free flame retardant, nylon 6, polyphenylene ether, compatibilizer, toughening agent, antioxidant and lubricant in Table 1;

[0046] (2) Mix the coupling agent and halogen-free flame retardant at 80°C for 5 minutes, then add nylon 6, polyphenylene ether, compatibilizer, toughener, antioxidant and lubricant and mix at 60°C for 5 minutes, Finally, the mixed material is extruded and granulated by a twin-screw extruder to obtain the high heat-resistant halogen-free flame-retardant nylon 6;

[0047] Wherein the rotational speed of the twin-screw extruder is 500r / min, and the temperature is 220°C. The performance test of the obtained high heat-resistant halogen-free flame-retardant nylon 6 is shown in Table 3.

Embodiment 2

[0049] A preparation method of high heat-resistant halogen-free flame-retardant nylon 6, comprising the following steps:

[0050] (1) Weigh raw materials according to the amount of coupling agent, halogen-free flame retardant, nylon 6, polyphenylene ether, compatibilizer, toughening agent, antioxidant and lubricant in Table 1;

[0051] (2) Mix the coupling agent and the halogen-free flame retardant at 100°C for 4 minutes, then add nylon 6, polyphenylene ether, compatibilizer, toughener, antioxidant and lubricant and mix at 80°C for 4 minutes, Finally, the mixed material is extruded and granulated by a twin-screw extruder to obtain the high heat-resistant halogen-free flame-retardant nylon 6;

[0052] Wherein the rotational speed of the twin-screw extruder is 300r / min, and the temperature is 260°C. The performance test of the obtained high heat-resistant halogen-free flame-retardant nylon 6 is shown in Table 3.

Embodiment 3

[0054] A preparation method of high heat-resistant halogen-free flame-retardant nylon 6, comprising the following steps:

[0055] (1) Weigh raw materials according to the amount of coupling agent, halogen-free flame retardant, nylon 6, polyphenylene ether, compatibilizer, toughening agent, antioxidant and lubricant in Table 1;

[0056] (2) Mix the coupling agent and halogen-free flame retardant at 90°C for 3 minutes, then add nylon 6, polyphenylene ether, compatibilizer, toughener, antioxidant and lubricant and mix at 70°C for 3 minutes, Finally, the mixed material is extruded and granulated by a twin-screw extruder to obtain the high heat-resistant halogen-free flame-retardant nylon 6;

[0057] Wherein the rotational speed of the twin-screw extruder is 200r / min, and the temperature is 280°C. The performance test of the obtained high heat-resistant halogen-free flame-retardant nylon 6 is shown in Table 3.

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Abstract

The invention discloses halogen-free flame retardant nylon 6 with high heat resistance as well as a preparation method and application thereof. The halogen-free flame retardant nylon 6 with high heat resistance comprises the following components in percentage by weight: 30-80% of nylon 6, 10-50% of polyphenyl ether, 0.5-10% of compatilizer, 2-10% of toughening agent, 5-20% of halogen-free flame retardant, 0.2-1.0% of coupling agent, 0.2-0.6% of antioxidant and 0.2-2.0% of lubricant. Compared with conventional nylon subjected to flame retardant modification by adopting a single-component halogen-free flame retardant, the high heat resistance halogen-free flame retardant nylon 6 has the advantages that the nylon 6 is subjected to halogen-free flame retardant modification by compounding the PPE (Polypheylene ether) with good flame retardant property and the halogen-free flame retardant, so that the mechanical property and heat resistance of the material can be improved in the objective flame retardant grade, and thus the application range of the material is expanded.

Description

technical field [0001] The invention belongs to the field of modified plastics, and in particular relates to a high heat-resistant halogen-free flame-retardant nylon 6 and its preparation method and application. Background technique [0002] Nylon 6 (PA6) is a translucent or opaque milky white semi-crystalline resin. It has high rigidity and toughness in a wide temperature range, and its wear resistance, creep resistance and oil resistance are good, and it is widely used in many fields of society. In recent years, nylon 6 has been widely used in electronics, electrical appliances, communications and other fields. The characteristics of components that are easy to accumulate heat and generate electric sparks make these fields have higher requirements for flame retardancy of materials, but the oxygen index of nylon 6 Low and easy to burn, so flame retardant modification is required. [0003] Traditional halogen flame retardants (mainly bromine series) are harmful to the envi...

Claims

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Application Information

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IPC IPC(8): C08L77/02C08L71/12C08L51/08C08L51/06C08K13/06C08K13/02C08K9/10C08K9/06C08K3/02C08K5/3492
CPCC08L71/12C08L77/02C08L2201/02C08L2201/08C08L2201/22C08L2203/20C08L51/06C08K13/06C08K9/10C08K9/06C08K2003/026C08K13/02C08K5/34928
Inventor 郝建鑫黄泽彬郝源增任萍
Owner GUANGZHOU SUPER DRAGON ENG PLASTICS
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