A kind of nylon 6 composition with anti-aging performance and preparation method thereof

An anti-aging and composition technology, applied in the field of nylon 6 composition and its preparation, can solve the problems of cracking, brittleness, decrease in tensile strength and elongation, etc. Scratch and odor effects

Active Publication Date: 2014-10-29
HEFEI GENIUS NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Changes in physical and mechanical properties are also obvious, such as brittleness, decreased impact strength, or even self-rupture, decreased tensile strength and elongation
The thermal oxidation process leads to thermo-oxidative degradation of the material at high temperature

Method used

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  • A kind of nylon 6 composition with anti-aging performance and preparation method thereof
  • A kind of nylon 6 composition with anti-aging performance and preparation method thereof
  • A kind of nylon 6 composition with anti-aging performance and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] (1) Dry nylon 6 resin at 90-100°C for 3-4 hours;

[0053] (2) Weigh 75.5% of nylon 6 resin, 5.5% of polyethylene resin, 2.5% of maleic anhydride grafted ethylene-octene copolymer, 0.6% of anti-aging additive UV3035 / UV4045 / UV5050 (1:1:1), Antioxidant 1098 / 168 (1:1) 0.4%, lubricant AC-540A 0.5%;

[0054] (3) Stir the material weighed in the above step (2) in a high-speed mixer for 3-5min;

[0055] (4) Add the mixed material into the hopper of the twin-screw extruder;

[0056](5) Add glass fibers with a mass fraction of 15% from the exhaust port of the extruder, melt and blend, extrude and granulate to form composite materials. Among them, the temperature settings of each section of the twin-screw extruder are: the temperature of the first zone of the twin-screw extruder is 180-220°C, the temperature of the second zone is 200-240°C, the temperature of the third zone is 220-250°C, the temperature of the fourth zone is 220-240°C, and the temperature of the fifth zone The ...

Embodiment 2

[0058] (1) Dry nylon 6 resin at 90-100°C for 3-4 hours;

[0059] (2) Weigh 76.1% of nylon 6 resin, 5.5% of polyethylene resin, 2.5% of maleic anhydride grafted ethylene-octene copolymer, 20.4% of anti-aging additive PolyAdHS, and 0.5% of lubricant AC-540A;

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

[0061] (4) Add the mixed material into the hopper of the twin-screw extruder;

[0062] (5) Add glass fibers with a mass fraction of 15% from the exhaust port of the extruder, melt and blend, extrude and granulate to form composite materials. Among them, the temperature settings of each section of the twin-screw extruder are: the temperature of the first zone of the twin-screw extruder is 180-220°C, the temperature of the second zone is 200-240°C, the temperature of the third zone is 220-250°C, the temperature of the fourth zone is 220-240°C, and the temperature of the fifth zone The temperature is 220-240°C, the temperature in ...

Embodiment 3

[0066] (1) Dry nylon 6 resin at 90-100°C for 3-4 hours;

[0067] (2) Weigh 75.5% of nylon 6 resin, 5.5% of polyethylene resin, 2.5% of maleic anhydride grafted ethylene-propylene copolymer, 0.6% of anti-aging additive UV3035 / UV4045 / UV5050 (1:1:1), anti-aging Oxygen agent 1098 / 168 (1:1) 0.4%, lubricant AC-540A 0.5%;

[0068] (3) Stir the material weighed in the above step (2) in a high-speed mixer for 3-5min;

[0069] (4) Add the mixed material into the hopper of the twin-screw extruder;

[0070] (5) Add glass fibers with a mass fraction of 15% from the exhaust port of the extruder, melt and blend, extrude and granulate to form composite materials. Among them, the temperature settings of each section of the twin-screw extruder are: the temperature of the first zone of the twin-screw extruder is 180-220°C, the temperature of the second zone is 200-240°C, the temperature of the third zone is 220-250°C, the temperature of the fourth zone is 220-240°C, and the temperature of the ...

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Abstract

The invention discloses a preparation method of a nylon 6 composition with good ageing resistance, in particular a glass fiber reinforced and toughened nylon 6 composition with good ageing resistance. The preparation method is characterized in that: the nylon 6 composition is prepared by extruding and pelletizing the following raw materials in percentage by weight by a double-screw extruder: 50-80% of nylon 6 resin, 1-10% of polyvinyl resin, 1-8% of compatible toughening agent, 10-30% of glass fiber, 0.3-2% of anti-ageing additive and other processing additives, wherein the glass fiber is added into an air outlet of the extruder, and other raw materials are pre-mixed and added into a material inlet of the extruder. The nylon 6 composition has an anti-ageing level of 4-5, uniform mechanical performance and good low temperature impact performance, is mainly applied to manufacturing of car door decoration strips, is capable of meeting the requirements of scraping resistance and smell and aerial fog properties of the car door decoration strips, and is simple in preparation process.

Description

technical field [0001] The invention belongs to the technical field of polymer composite materials, and relates to a nylon 6 composition and a preparation method thereof. Background technique [0002] Nylon is a crystalline plastic and the earliest engineering plastic developed. It has high mechanical strength, good toughness, fatigue resistance, self-lubrication, small friction coefficient, wear resistance, heat resistance (long-term use within 100°C), electrical Good performance, easy dyeing, easy molding and other advantages, with good comprehensive performance and performance-price ratio. It is a kind of polymer material with many varieties, of which PA6 and PA66 account for about 90% of the total output. [0003] The environmental protection and energy-saving development needs of the automobile industry have put forward requirements for lightweight automobiles, so more and more parts on automobiles have begun to be plasticized. Plasticization first started with relati...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L77/02C08L23/06C08L23/08C08L51/06C08K13/04C08K7/14B29C47/92B29C48/92
CPCB29C47/92
Inventor 吴安琪
Owner HEFEI GENIUS NEW MATERIALS
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