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Modified glass-fiber-reinforced PA6 (polyamide 6) composition and preparation method thereof

A composition and modification technology, applied in the field of modified glass fiber reinforced PA6 composition and its preparation, can solve the problems of affecting the performance of compression-resistant parts, affecting the appearance of PA parts, etc., to improve mechanical strength, increase Absorption and dissipation effects, easy processing effects

Inactive Publication Date: 2017-06-09
HEFEI GENIUS NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the floating fiber phenomenon not only affects the appearance of PA parts, but also affects its performance as a pressure-resistant part.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] (1) Dry PA6 at 110°C for 4 hours; PA66 at 110°C for 4 hours;

[0045] (2) Weigh 60 parts of dry PA6, 1 part of PA66, 25 parts of glass fiber, 5 parts of hollow glass microspheres, 5 parts of sodium benzoate, 8 parts of surface modifier (3 parts of modified B a mixture of bis fatty acid amide and 5 parts silicone);

[0046] (3) Stir the material weighed in the above step (2) in a high-speed mixer for 3 minutes;

[0047] (4) Then add the above-mentioned homogeneously mixed materials into the feeding port of the twin-screw extruder;

[0048] (5) The material is melted and extruded by a twin-screw extruder, and granulated;

[0049] The processing technology of the twin-screw extruder is as follows: the temperature of the first zone of the twin-screw extruder is 230°C, the temperature of the second zone is 245°C, the temperature of the third zone is 255°C, the temperature of the fourth zone is 265°C, the temperature of the fifth zone is 260°C, and the temperature of the si...

Embodiment 2

[0051] (1) Dry PA6 at 140°C for 5 hours; PA66 at 120°C for 5 hours;

[0052] (2) Weigh dry 40 parts of PA6, 10 parts of PA66, 30 parts of glass fiber, 5 parts of hollow glass microspheres, 5 parts of toughening agent (ethylene-methyl acrylate copolymer and ethylene-methyl acrylate ester-glycidyl methacrylate in 1:1 composition), 8 parts of sodium benzoate, 5 parts of surface modifier (a mixture of 2 parts of modified ethylene bis fatty acid amide and 3 parts of silicone);

[0053] (3) Stir the material weighed in the above step (2) in a high-speed mixer for 5 minutes;

[0054] (4) Then add the above-mentioned homogeneously mixed materials into the feeding port of the twin-screw extruder;

[0055] (5) The material is melted and extruded by a twin-screw extruder, and granulated;

[0056] The processing technology of the twin-screw extruder is as follows: the temperature of the first zone of the twin-screw extruder is 220°C, the temperature of the second zone is 225°C, the temp...

Embodiment 3

[0058] (1) Dry PA6 at 120°C for 5 hours; PA66 at 120°C for 5 hours;

[0059](2) Weigh 40 parts of dry PA6, 5 parts of PA66, 35 parts of glass fiber, 10 parts of hollow glass microspheres, and 3 parts of toughening agent (maleic anhydride grafted ethylene-octene copolymer) , 10 parts of sodium benzoate, 5 parts of surface modifier (a mixture of 2 parts of modified ethylene bis fatty acid amide and 3 parts of silicone);

[0060] (3) Stir the material weighed in the above step (2) in a high-speed mixer for 5 minutes;

[0061] (4) Then add the above-mentioned homogeneously mixed materials into the feeding port of the twin-screw extruder;

[0062] (5) The material is melted and extruded by a twin-screw extruder, and granulated;

[0063] The processing technology of the twin-screw extruder is as follows: the temperature of the first zone of the twin-screw extruder is 240°C, the temperature of the second zone is 255°C, the temperature of the third zone is 265°C, the temperature of ...

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Abstract

The invention provides a modified glass-fiber-reinforced PA6 (polyamide 6) composition and a preparation method thereof. The composition is prepared by mixing and carrying out extrusion granulation on the following components: 30-60 parts of PA6, 1-10 PA66, 25-45 parts of glass fiber, 5-15 parts of hollow glass microsphere, 0-5 parts of toughener, 5-10 parts of nucleator and 5-10 parts of surface modifier. The hollow glass microspheres and surface modifier are matched to improve the bonding state between the glass fibers and nylon resin and reduce the separation between the glass fibers and nylon resin, so that the glass fibers are well coated in the nylon resin; and the glass fibers and resin synchronously flow in the working process, and can not be easily torn away, thereby greatly reducing the exposure of the glass fibers. The mechanical properties and compression resistance of the modified glass-fiber-reinforced PA6 composition are enhanced.

Description

technical field [0001] The invention belongs to the field of polymer composite materials, and in particular relates to a modified glass fiber reinforced PA6 composition and a preparation method thereof. Background technique [0002] Polyamide (PA, commonly known as nylon) is the first resin developed by DuPont in the United States for fiber, and it was industrialized in 1939. Polyamide began to develop and produce injection molding products in the 1950s to replace metals to meet the requirements of lightweight and cost-reducing downstream industrial products. PA has good comprehensive properties, including mechanical properties, heat resistance, wear resistance, chemical resistance and self-lubrication, and has a low coefficient of friction, as well as certain flame retardancy, and is easy to process. [0003] At present, in order to strengthen the toughness of PA and reduce its production cost, most nylon materials are modified by adding appropriate glass fibers to them, b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L77/04C08L77/06C08L83/04C08K13/04C08K7/14C08K7/28C08K5/098C08K5/20
CPCC08L77/04C08L2205/02C08L2205/03C08L77/06C08L83/04C08K13/04C08K7/14C08K7/28C08K5/098C08K5/20
Inventor 杨桂生吴安琪
Owner HEFEI GENIUS NEW MATERIALS
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