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High-temperature ageing resisting PA (Polyamide) material and preparation method thereof

A high-temperature-resistant and anti-aging agent technology, which is applied in the field of polymer materials and their processing, can solve problems such as failure to reach, and achieve the effect of facilitating dispersion, realizing long-term high-temperature aging resistance, and improving the effect of high-temperature aging resistance

Inactive Publication Date: 2017-01-04
GUANGDONG SHUNDE SHUNYAN NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the high temperature resistance of PA materials is good, it is also a short-term effect. For more than 2000 hours, conventional PA materials still cannot achieve the desired effect.

Method used

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  • High-temperature ageing resisting PA (Polyamide) material and preparation method thereof
  • High-temperature ageing resisting PA (Polyamide) material and preparation method thereof

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preparation example Construction

[0056] A preparation method of high temperature aging resistant PA material, the preparation method comprises the following steps:

[0057] 1) First, mix PA66 and PA6 evenly with a high mixer, and remove the moisture on the surface to obtain the mixture polyamide;

[0058] 2) Then premix the anti-aging agent and lubricant first, then add it to the polyamide mixture, and stir evenly to obtain a premix;

[0059] 3) Transfer the above-mentioned premixed material into a twin-screw extruder for melt extrusion and granulation.

[0060] In the preparation method of the high-temperature aging-resistant PA material described in the present invention, as a further scheme, the stirring time of step 1) is 3-8 minutes, and the rotation speed is 1000-1500 r / min.

[0061] In the preparation method of the high-temperature aging-resistant PA material described in the present invention, as a further scheme, the time for step 2) mixing the anti-aging agent and the lubricant is 5-8 minutes.

[...

Embodiment 1

[0065] A high-temperature aging-resistant PA material, which comprises the following components by weight percentage:

[0066] PA66 63.6%

[0067] PA6 5%

[0068] Anti-aging agent 0.8%

[0069] Lubricant 0.6%

[0070] Glass fiber 30%;

[0071] 1) Firstly, PA66 and PA6 were stirred at a speed of 1500r / min for 3 minutes with a high mixer, and the moisture on the surface was removed to obtain the mixture polyamide;

[0072] 2) Then premix the anti-aging agent and lubricant for 5 minutes, then add it to the polyamide mixture, and continue to stir for 10 minutes to obtain a premix;

[0073] 3) Transfer the above-mentioned premixed materials into a twin-screw extruder for melt extrusion and granulation, wherein the extrusion temperature is 230° C., and the rotational speed of the twin-screws is 150 r / min.

Embodiment 2

[0075] A high-temperature aging-resistant PA material, which comprises the following components by weight percentage:

[0076] PA66 63.2%

[0077] PA6 5%

[0078] Anti-aging agent 1%

[0079] Lubricant 0.8%

[0080] Glass fiber 30%;

[0081] The preparation method of the above-mentioned high temperature aging resistant PA material is:

[0082] 1) First, PA66 and PA6 were stirred at a speed of 1200r / min for 5 minutes with a high mixer, and the moisture on the surface was removed to obtain the mixture polyamide;

[0083] 2) Then premix the anti-aging agent and lubricant for 6 minutes, then add it to the polyamide mixture, and continue stirring for 12 minutes to obtain a premix;

[0084] 3) Transfer the above premixed material into a twin-screw extruder for melt extrusion and granulation, wherein the extrusion temperature is 255° C., and the rotational speed of the twin-screw is 120 r / min.

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Abstract

The invention discloses a high-temperature ageing resisting PA (Polyamide) material and a preparation method thereof. The high-temperature ageing resisting PA material is prepared from the following components in percentage by weight: 60 percent to 70 percent of PA66, 5 percent to 10 percent of PA6, 0.5 percent to 1 percent of an anti-ageing agent, 0.4 percent to 1 percent of a lubricant and 20 percent to 30 percent of glass fiber. The high-temperature ageing resisting PA material is compounded with the multi-element anti-ageing agent, so as to realize a long-period high-temperature ageing resisting effect, so that a product can be used for a long period at 160 DEG C, and the high-temperature ageing resisting time reaches 3000 hours.

Description

technical field [0001] The invention belongs to the technical field of polymer materials and processing thereof, and in particular relates to a high-temperature aging-resistant PA material and a preparation method thereof. Background technique [0002] Polyamide (Polyamide, PA) is a widely used engineering plastic, its molecular structure and crystallization make it have excellent physical and mechanical properties. However, due to the presence of amide polar groups, polyamide has high water absorption, low heat distortion temperature, low modulus and strength, which limit its application. Polyamide 66, English name Polyamide 66 (abbreviated as PA66), is a general term for polymers containing amide groups in the repeating unit of the macromolecular main chain. Among the five major engineering plastics, it has the largest output, the most varieties and the most widely used varieties. Widely used in the manufacture of parts for machinery, automobiles, chemical and electrical...

Claims

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Application Information

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IPC IPC(8): C08L77/06C08L77/02C08K13/02C08K7/14C08K5/527C08K3/00C08K5/00C08K5/098
CPCC08L77/06C08L2201/08C08L2205/02
Inventor 张钊鹏姚大爱肖雄伟张平陈东明杨子江林嗣鑫郑梓灿
Owner GUANGDONG SHUNDE SHUNYAN NEW MATERIALS
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