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A glass fiber reinforced PA6 composition with improved floating fibers and preparation method thereof

A technology of composition and glass fiber, which is applied in the field of polymer composite materials, can solve the problems affecting the performance of pressure-resistant parts and the appearance and aesthetics of PA parts, so as to improve the bonding state, increase the absorption and dissipation effect, The effect of promoting the toughening effect

Active Publication Date: 2021-04-09
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

[0042] (1) Dry PA6 at 110°C for 4 hours; PA66 at 110°C for 4 hours;

[0043] (2) Weigh 60 parts of dry PA6, 1 part of PA66, 25 parts of glass fiber, 5 parts of mica, 5 parts of sodium benzoate, and 5 parts of silicone powder;

[0044] (3) Stir the material weighed in the above step (2) in a high-speed mixer for 3 minutes;

[0045] (4) Then add the above-mentioned homogeneously mixed materials into the feeding port of the twin-screw extruder;

[0046] (5) The material is melted and extruded by a twin-screw extruder, and granulated;

[0047] 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 sixth zone The temperature is 265°C, the head temperature is 265°C, and the host speed is 15HZ. Th...

Embodiment 2

[0049] (1) Dry PA6 at 110°C for 4 hours; PA66 at 110°C for 4 hours;

[0050] (2) Weigh and dry 40 parts of PA6, 10 parts of PA66, 30 parts of glass fiber, 5 parts of mica, 5 parts of toughening agent (ethylene-methyl acrylate copolymer and ethylene-methyl acrylate-formaldehyde Glycidyl acrylate in a 1:1 composition), 5 parts of sodium benzoate, 5 parts of silicone powder;

[0051] (3) Stir the material weighed in the above step (2) in a high-speed mixer for 3 minutes;

[0052] (4) Then add the above-mentioned homogeneously mixed materials into the feeding port of the twin-screw extruder;

[0053] (5) The material is melted and extruded by a twin-screw extruder, and granulated;

[0054] 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 temperature of the third zone is 235°C, the temperature of the fourth zone is 245°C, the temperature of th...

Embodiment 3

[0056] (1) Dry PA6 at 140°C for 4-5 hours; PA66 at 120°C for 5 hours;

[0057] (2) Weigh 40 parts of dry PA6, 5 parts of PA66, 35 parts of glass fiber, 10 parts of mica, 3 parts of toughening agent (maleic anhydride grafted ethylene-octene copolymer), 5 parts sodium benzoate, 10 parts of silicone powder;

[0058] (3) Stir the material weighed in the above step (2) in a high-speed mixer for 3 minutes;

[0059] (4) Then add the above-mentioned homogeneously mixed materials into the feeding port of the twin-screw extruder;

[0060] (5) The material is melted and extruded by a twin-screw extruder, and granulated;

[0061] 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 the fourth zone is 275°C, the temperature of the fifth zone is 270°C, and the temperature of the sixth zone is 270°C...

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Abstract

The invention provides a glass fiber reinforced PA6 composition with improved floating fibers and a preparation method thereof, which comprises 30-60 parts of PA6, 1-10 parts of PA66, 25-45 parts of glass fiber, 5-15 parts of mica, 0- 5 parts of toughening agent, 5-10 parts of nucleating agent and 5-10 parts of silicone powder are prepared by mixing, extruding and granulating. In the present invention, after mica and silicone powder are mixed, the compatibility between PA6 and glass fiber is enhanced, and similar anchoring nodes, i.e. crosslinking points, are formed between glass fiber and nylon resin, which improves the performance of glass fiber and resin. The bonding state reduces the separation of glass fiber and resin; at the same time, nylon 66 also improves the mechanical strength of the composition.

Description

technical field [0001] The invention belongs to the field of polymer composite materials, and in particular relates to a glass fiber-reinforced PA6 composition with improved floating fibers 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 gl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L77/02C08L77/06C08L83/04C08L23/08C08K7/14C08K3/34C08K5/098B29C48/92
CPCB29C48/92B29C2948/92209C08L77/02C08L2205/02C08L2205/03C08L2205/035C08L77/06C08L83/04C08K7/14C08K3/34C08K5/098C08L23/0869C08L51/06
Inventor 杨桂生吴安琪
Owner HEFEI GENIUS NEW MATERIALS