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Low-warping-rate halogen-free flame retardant carbon fiber-reinforced nylon alloy material and preparation method

An alloy material and carbon fiber technology, applied in electronic devices and power tools, halogen-free flame retardant carbon fiber reinforced nylon alloy materials and their preparation fields, can solve problems affecting practical applications, large shrinkage rate, shrinkage and warpage of products, etc. Effects of low density, low molding shrinkage, and low warpage

Inactive Publication Date: 2015-03-25
GUANGZHOU SUPER DRAGON ENG PLASTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The highly polar amide groups and long flexible aliphatic chain segments in the molecular structure of aliphatic polyamides make this type of material have the disadvantages of high water absorption and large product shrinkage, especially glass fiber or carbon fiber reinforced nylon materials. When making thin-walled products, it is easy to produce product shrinkage and warpage, which seriously affects the practical application of such materials

Method used

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  • Low-warping-rate halogen-free flame retardant carbon fiber-reinforced nylon alloy material and preparation method
  • Low-warping-rate halogen-free flame retardant carbon fiber-reinforced nylon alloy material and preparation method
  • Low-warping-rate halogen-free flame retardant carbon fiber-reinforced nylon alloy material and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Example 1: Preparation of low warpage halogen-free flame-retardant carbon fiber reinforced nylon alloy material

[0041] PA6M2400 (Yueyang Petrochemical) 41.8wt%, ABS8391A 13wt% (Shanghai Gaoqiao Petrochemical), acrylonitrile-butadiene-styrene plastic graft maleic anhydride (ABS-g-MAH) 4wt%, halogen-free flame retardant 12wt% (melamine phosphate); flame retardant synergist Sb 2 o 3 4wt%, 0.2wt% antioxidant (phosphonite antioxidant 168) was added to a high-speed mixer and stirred and mixed, the mixing temperature was not higher than 80°C, and the mixing time was 15min; the uniformly stirred material was added to the aspect ratio In the hopper of a parallel twin-screw extruder with a L / D of 40:1 and a screw diameter of 30mm, set the temperature of each section of the extruder from the hopper to the die head (a total of nine zones): 180°C, 225°C , 230°C, 240°C, 245°C, 255°C, 250°C, 245°C, 245°C, the screw speed of the main engine is 350r / min, the speed of the hopper feed...

Embodiment 2

[0042] Example 2: Preparation of halogen-free flame-retardant carbon fiber reinforced nylon alloy material with low warpage rate

[0043] PA6M2400 (Yueyang Petrochemical) 49.8wt%, ABS8391A 5wt% (Shanghai Gaoqiao Petrochemical), acrylonitrile-butadiene-styrene plastic graft maleic anhydride (ABS-g-MAH) 4wt%, halogen-free flame retardant 12wt% (melamine phosphate); flame retardant synergist Sb 2 o 3 4wt%, 0.2wt% antioxidant (phosphonite antioxidant 168) was added to a high-speed mixer and stirred and mixed, the mixing temperature was not higher than 80°C, and the mixing time was 15min; the uniformly stirred material was added to the aspect ratio In the hopper of a parallel twin-screw extruder with a L / D of 40:1 and a screw diameter of 30mm, set the temperature of each section of the extruder from the hopper to the die head (a total of nine zones): 180°C, 225°C , 230°C, 240°C, 245°C, 255°C, 250°C, 245°C, 245°C, the screw speed of the main engine is 350r / min, the speed of the ho...

Embodiment 3

[0044] Example 3: Preparation of low warpage halogen-free flame-retardant carbon fiber reinforced nylon alloy material

[0045] PA6M2400 (Yueyang Petrochemical) 45.8wt%, ABS8391A 9wt% (Shanghai Gaoqiao Petrochemical), acrylonitrile-butadiene-styrene plastic graft maleic anhydride (ABS-g-MAH) 4wt%, halogen-free flame retardant 12wt% (melamine phosphate); flame retardant synergist Sb 2 o 3 4wt%, 0.2wt% antioxidant (phosphonite antioxidant 168) was added to a high-speed mixer and stirred and mixed, the mixing temperature was not higher than 80°C, and the mixing time was 15min; the uniformly stirred material was added to the aspect ratio In the hopper of a parallel twin-screw extruder with a L / D of 40:1 and a screw diameter of 30mm, set the temperature of each section of the extruder from the hopper to the die head (a total of nine zones): 180°C, 225°C , 230°C, 240°C, 245°C, 255°C, 250°C, 245°C, 245°C, the screw speed of the main engine is 350r / min, the speed of the hopper feed...

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Abstract

The invention belongs to the technical field of a carbon fiber-reinforced nylon material, discloses a low-warping-rate halogen-free flame retardant carbon fiber-reinforced nylon alloy material and a preparation method as well as application thereof to the fields such as electronic and electric appliances, transportation and electric tools, and is particularly applicable to some thin-walled electronic devices and electric tools with higher material mechanical performance requirement. The material comprises the following components in percentage by mass: 32.5-57.7 percent of nylon, 5-15 percent of acrylonitrile-butadiene-styrene (ABS) plastic, 5-25 percent of carbon fiber, 5-25 percent of glass fiber, 5-12 percent of halogen-free flame retardant, 1-5 percent of flame retardant synergist, 0-5 percent of compatibilizer and 0.1-0.3 percent of other assistants. PA / ABS (Polyamide) is used as an alloy substrate, and the glass fiber and the carbon fiber are compounded and enhanced to obtain superior mechanical performance, reduce density, improve fluidity, reduce internal stress and reduce the warping rate of a thin-wall product.

Description

technical field [0001] The invention belongs to the technical field of carbon fiber-reinforced nylon materials, and in particular relates to a halogen-free flame-retardant carbon fiber-reinforced nylon alloy material with low warpage rate and its preparation method and its application in the fields of electronic appliances, aerospace, transportation, electric tools, etc. It is especially suitable for some thin-walled electronic devices and electric tools that require high mechanical properties of materials. Background technique [0002] Polyamide fiber is commonly known as nylon (Nylon), density 1.15g / cm 3 , is the general term for thermoplastic resins containing repeated amide groups -[NHCO]- on the main chain of the molecule. According to the structure of the main chain of the polymer, it is classified into two types: aliphatic nylon and aromatic nylon. Because of its excellent properties such as wear resistance, oil resistance, self-lubrication, impact resistance, etc., ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L77/02C08L55/02C08L51/00C08K13/04C08K7/06C08K7/14C08K3/22C08K5/3492C08K5/526B29C47/92B29C48/92
CPCC08L77/02B29C48/92B29C2948/92561B29C2948/9258B29C2948/92704C08K2201/003C08K2201/004C08L2201/02C08L2201/08C08L2201/22C08L2205/025C08L2205/03C08L55/02C08K13/04C08K7/06C08K7/14C08K5/34928C08K3/2279C08K5/526
Inventor 郝建鑫郝源增邓爵安任萍
Owner GUANGZHOU SUPER DRAGON ENG PLASTICS
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