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Nylon 66 material and preparation method thereof

A nylon and PA66 technology, which is applied in the field of polymer materials, can solve the problems of easy flow, overflow and flash of PA66, and achieve the effect of accelerating the crystallization process, improving the flow and reducing the generation of flash.

Active Publication Date: 2021-11-02
江苏博云塑业股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve the problems of the prior art, the embodiment of the present invention provides a new nylon 66 material to overcome the problem that PA66 in the prior art tends to flow into the tiny gaps of the mold during injection molding, resulting in flashes and flashes, etc. question

Method used

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  • Nylon 66 material and preparation method thereof
  • Nylon 66 material and preparation method thereof

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preparation example Construction

[0056] Corresponding to the above nylon 66 material, the embodiment of the present invention also provides a preparation method of nylon 66 material, refer to figure 1 As shown, the method includes the following steps:

[0057] S1: Prepare raw materials according to the following weight percentages:

[0058] PA66 27%~86.7%, the first flash inhibitor 0.1%~1%, the second flash inhibitor 3%~10%, glass fiber 10%~60%, antioxidant 0.1%~1%, lubricant 0.1%~1%;

[0059] S2: After mixing the above PA66, the first flash inhibitor, the second flash inhibitor, antioxidant and lubricant through the mixer, add them to the twin-screw extruder for fusion mixing;

[0060] S3: Add glass fiber through side feeding, and cool the extruded strip through a water tank, wherein the temperature of the cooling water is 15°C to 20°C;

[0061] S4: The nylon 66 material is obtained after pelletizing by a pelletizer, and the rotating speed of the pelletizer is 500rpm-700rpm.

[0062] All the above option...

Embodiment 1

[0095] A kind of nylon 66 material, calculated according to weight percentage, its component comprises:

[0096] PA66 66.4%, PA6T / 66 (second flash inhibitor) 3%, glass fiber 30%, antioxidant 0.3%, lubricant 0.3%, among which the relative sulfuric acid viscosity of PA66 is 2.4.

Embodiment 2

[0098] A kind of nylon 66 material, calculated according to weight percentage, its component comprises:

[0099] PA66 64.4%, PA6T / 66 (second flash inhibitor) 5%, glass fiber 30%, antioxidant 0.3%, lubricant 0.3%, among which the relative sulfuric acid viscosity of PA66 is 2.4.

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Abstract

The invention discloses a nylon 66 material and a preparation method thereof, and belongs to the technical field of high polymer materials. The nylon 66 material comprises the following components in percentage by weight: 27%-86.7% of PA66, 0.1%-1% of a first flash inhibitor, 3%-10% of a second flash inhibitor, 10%-60% of glass fibers, 0.1%-1% of an antioxidant and 0.1%-1% of a lubricant, and the second flash inhibitor is aromatic polyamide. Aromatic polyamide is used as the second flash inhibitor and can be mutually entangled with PA66 molecular chains by utilizing the characteristics that molecules of the aromatic polyamide have rigid benzene rings, the crystallization temperature is relatively high, and the compatibility with PA66 is good, so that the aromatic polyamide can flow well, can be quickly formed, and greatly inhibits the generation of flashes. Meanwhile, the first flash inhibitor and the second flash inhibitor can generate a synergistic effect to further reduce the generation of flashes.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a nylon 66 material and a preparation method thereof. Background technique [0002] Polyamide (PA, nylon) is an assembly of high polymers containing amide groups in the repeating unit of the macromolecular main chain. Because polyamide has good comprehensive properties, including mechanical properties, heat resistance, wear resistance, chemical resistance and self-lubricating properties, low friction coefficient, certain flame retardancy and easy processing, it has become a It is a type of polymer material with the widest application and variety in the engineering plastics industry. There are many varieties of PA, including PA6, PA66, PA11, PA12, PA46, PA610, PA612, PA1010, semi-aromatic nylon PA6T and special nylon. [0003] Polyamide 66 or Nylon 66 (PA66), which is polycondensed from adipic acid and hexamethylenediamine, is a translucent or opaque milky white or yel...

Claims

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Application Information

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IPC IPC(8): C08L77/06C08K7/14C08K3/34
CPCC08L77/06C08K7/14C08K3/34C08L2205/24C08L2205/025
Inventor 李春进尹航赵佰金
Owner 江苏博云塑业股份有限公司
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