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Low-water-absorption flame-retardant glass fiber reinforced PA6 (polyamide 6) composite and preparation method thereof

A low water absorption, composite material technology, applied in the field of polymer materials, can solve the problems of accelerating flame diffusion and spread, and achieve the effects of simple processing, low environmental protection and low energy consumption, and increased compatibility.

Active Publication Date: 2019-11-08
横店集团得邦工程塑料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, PA6 is a combustible material, which will produce molten droplets and thick smoke after burning, which will accelerate the spread and spread of the flame, so it needs flame retardant modification before use

Method used

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  • Low-water-absorption flame-retardant glass fiber reinforced PA6 (polyamide 6) composite and preparation method thereof
  • Low-water-absorption flame-retardant glass fiber reinforced PA6 (polyamide 6) composite and preparation method thereof
  • Low-water-absorption flame-retardant glass fiber reinforced PA6 (polyamide 6) composite and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] (1) 79.3wt% PA6 particles, 5wt% stearic acid, 5wt% MPP, 0.2wt% antioxidant (antioxidant 168, antioxidant 1010 are each 0.1wt%) and 0.5wt% processing aid ( Fatty acid glyceride is 0.1wt%, paraffin is 0.1wt%, KH-550 is 0.3wt%) stirring 10min in high-speed mixer, stirring speed 2500r / min;

[0031] (2) Put the mixture of PA6 particles, hydrophobic agent, flame retardant, antioxidant and processing aid in step (1) in a vacuum drying oven at 90°C for 24 hours;

[0032] (3) Add the PA6 particle after drying in step (2) and the hydrophobic agent, flame retardant, antioxidant and processing aid mixture from the main feeding port, add the glass fiber of 10wt% at the side feeding port, Extrude and granulate in a twin-screw extruder. The twin-screw parameters are 220±10°C for the first zone, 230±10°C for the second zone, 250±10°C for the third zone, and 250±10°C for the fourth zone. 10°C, the temperature in the fifth zone is 230±10°C, the temperature of the head is 220±10°C, the s...

Embodiment 2

[0035] (1) 79.3wt% PA6 particles, 5wt% ammonium stearate, 5wt% MPP, 0.2wt% antioxidant (antioxidant 168, antioxidant 1010 are each 0.1wt%) and 0.5wt% processing aid (fatty acid glyceride is 0.1wt%, paraffin is 0.1wt%, KH-550 is 0.3wt%) stir 10min in high-speed mixer, stirring speed 2500r / min;

[0036] (2) Put the mixture of PA6 particles, hydrophobic agent, flame retardant, antioxidant and processing aid in step (1) in a vacuum drying oven at 90°C for 24 hours;

[0037](3) Add the PA6 particle after drying in step (2) and the hydrophobic agent, flame retardant, antioxidant and processing aid mixture from the main feeding port, add the glass fiber of 10wt% at the side feeding port, Extrude and granulate in a twin-screw extruder. The twin-screw parameters are 220±10°C for the first zone, 230±10°C for the second zone, 250±10°C for the third zone, and 250±10°C for the fourth zone. 10°C, the temperature in the fifth zone is 230±10°C, the temperature of the head is 220±10°C, the sp...

Embodiment 3

[0040] (1) 64.3wt% PA6 particle, 10wt% stearic acid, 10wt% MPP, 0.2wt% antioxidant (antioxidant 168, antioxidant 1010 are each 0.1wt%) and 0.5wt% processing aid ( Fatty acid glyceride is 0.1wt%, paraffin is 0.1wt%, KH-550 is 0.3wt%) stirring 10min in high-speed mixer, stirring speed 2500r / min;

[0041] (2) Put the mixture of PA6 particles, hydrophobic agent, flame retardant, antioxidant and processing aid in step (1) in a vacuum drying oven at 90°C for 24 hours;

[0042] (3) PA6 particles after drying in step (2) and hydrophobic agent, flame retardant, antioxidant and processing aid mixture are added from the main feeding port, 15wt% is added at the side feeding port, Extrude and granulate in the screw extruder. The twin-screw parameters are 220±10℃ for the first zone, 230±10℃ for the second zone, 250±10℃ for the third zone, and 250±10℃ for the fourth zone. , the temperature in zone five is 230±10°C, the head temperature is 220±10°C, the twin-screw speed is 80r / min, the feede...

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PUM

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Abstract

The invention belongs to the field of high polymer materials and discloses a low-water-absorption flame-retardant glass fiber reinforced PA6 (polyamide 6) composite and a preparation method thereof. The low-water-absorption flame-retardant glass fiber reinforced PA6 composite is prepared from components in parts by weight as follows: 43.6-99.3 parts of PA6, 5.0-15.0 parts of a water repellent agent, 10.0-30.0 parts of glass fiber, 5.0-20.0 parts of a flame retardant, 0.2-0.4 parts of an antioxidant and 0.5-1 part of a processing aid. A forming process of the low-water-absorption flame-retardant glass fiber reinforced PA6 composite is optimized, the hydrophobic performance of a PA6 matrix is improved by use of stearic acid and ammonium stearate, the flame retardance of the composite is improved by use of MPP (modified polypropylene), mechanical properties such as impact strength, tensile strength, elongation at break and the like of PA6 are improved by adding glass fiber, wherein stearic acid and ammonium stearate can increase the compatibility of MPP and PA6, and separation is inhibited; and besides, the water repellent agent has a gas-phase flame retardance function while producing gas through thermal decomposition, melamine groups in the MPP structure has certain hydrophobic property, and the water repellent agent and the melamine groups have synergistic flame retardant and hydrophobic effects.

Description

technical field [0001] The invention relates to the field of polymer materials, in particular to a low water absorption flame-retardant glass fiber reinforced PA6 composite material and a preparation method thereof. Background technique [0002] Nylon 6 (PA6 or polyamide 6), as one of the five major engineering plastics, is an important engineering plastic widely used, with excellent impact resistance, high tensile strength, good wear resistance, and excellent electrical insulation properties and chemical resistance. This type of material is mainly used in the fields of hardware machinery, electronics, instruments and meters. However, due to the amide bond in its structure, polyamide is easy to form intermolecular hydrogen bonds with water molecules, resulting in easy water absorption and poor rigidity of the material. The dimensional change of the material caused by water absorption greatly affects the long-term performance of the material, and limits PA6. Used in the fie...

Claims

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Application Information

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IPC IPC(8): C08L77/02C08L91/06C08K13/04C08K7/14C08K5/09C08K5/098C08K5/3492C08K5/52C08K5/544C08J5/04
CPCC08J5/043C08J2377/02C08K13/04C08K7/14C08K5/09C08K5/098C08K5/34922C08K5/34928C08K5/5205C08K5/544
Inventor 陆龙威鲁淞彥胡鑫斌郝刘佳王晓东
Owner 横店集团得邦工程塑料有限公司
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