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Friction-resistant high-toughness nylon 6 composite material and preparation method thereof

A composite material and friction-resistant technology, applied in the field of friction-resistant high-toughness nylon 6 composite material and its preparation, can solve the problems of little nylon 6 research, application and development, limited development of nylon 6, low dimensional stability, etc. Effects of hydrophobicity, improved mechanical properties, improved compatibility

Inactive Publication Date: 2020-12-08
成丹丹
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Nylon 6 is light in weight, stable in properties, easy to process and shape, acid and alkali resistant, and is widely used in engineering plastics, fibers, films and other fields; however, nylon 6 also has some problems. For example, nylon 6 molecular segments contain extremely polar The amide group is very easy to react with water molecules to form hydrogen bonds, resulting in nylon products with high water absorption, low dimensional stability, weak impact resistance in dry or low temperature conditions, and acid and alkali resistance. Problems that limit the development of nylon 6 in certain fields
[0003] With the development of science and technology and the improvement of living standards, traditional nylon 6 materials can no longer meet people's needs. In order to obtain nylon 6 products with excellent performance, people began to modify nylon 6; the main modification methods currently studied mainly include Blending modification, filling reinforcement modification, copolymerization modification and nanocomposite modification of nylon 6; (1) blending modification: blending polyurethane elastomer or other materials with nylon 6 to improve its mechanical properties and reduce Water absorption, but there is a problem of poor compatibility between the phase interfaces of some blend systems, resulting in poor performance of the blended product; (2) Filling enhancement modification: adding glass fiber, carbon fiber, whisker to the matrix and other fillers to improve the mechanical properties and flame retardant properties of nylon 6; (3) Copolymerization modification: graft and block other functional groups or high polymers to nylon 6 molecular chains to improve the performance of nylon 6 in all aspects; (4 ) nanocomposite modification: composite modification of nanomaterials and nylon 6 through melt blending and in-situ polymerization; currently, nylon 6 products on the market are mainly added with glass fibers and flame-retardant fibers, and few of them are specifically for nylon 6. Research, application and development of water absorption and blended composite materials

Method used

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  • Friction-resistant high-toughness nylon 6 composite material and preparation method thereof
  • Friction-resistant high-toughness nylon 6 composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] (1) Synthetic modified resin:

[0040] a. Preparation of mixed materials: heat organic fluorine powder and epoxy resin in a water bath, stir until completely melted, add methyltetrahydrophthalic anhydride, 2,4,6-tris(dimethylaminomethyl)phenol, and stir for 1h , let stand for reaction for 20min, keep the temperature constant, continue to add organosilicon, N-aminoethyl-3-aminopropylmethylsiloxane, and stir at 500r / min for 20min to obtain resin mixture; b. Preparation Polymer material: mix methyl acrylate and methanol, add diethylenetriamine, stir and mix well, stand for reaction under nitrogen for 3 hours, raise the temperature from room temperature to 140°C, and react under reduced pressure for 3 hours to obtain polymer material;

[0041] c. Mix the resin mixture and the polymer material, melt at 220°C, stir for 2 hours, cool to 125°C and solidify for 3 hours to obtain a modified resin;

[0042] (2) Synthesis of modified zirconium phosphate:

[0043] Put zirconium ox...

Embodiment 2

[0050] (1) Synthetic modified resin:

[0051] a. Preparation of mixed materials: heat organic fluorine powder and epoxy resin in a water bath, stir until completely melted, add methyltetrahydrophthalic anhydride, 2,4,6-tris(dimethylaminomethyl)phenol, stir for 1.5 h, let it stand for 25 minutes, keep the temperature constant, continue to add silicone, N-aminoethyl-3-aminopropylmethylsiloxane, and stir at 550r / min for 25 minutes to obtain a resin mixture;

[0052] b. Preparation of polymer material: mix methyl acrylate and methanol, add diethylenetriamine, stir and mix well, leave to react under nitrogen for 4 hours, raise the temperature from room temperature to 150°C, and react under reduced pressure for 4 hours to obtain polymeric material;

[0053] c. Mix the resin mixture and the polymer material, melt at 235°C, stir for 3 hours, cool to 140°C and solidify for 4 hours to obtain a modified resin;

[0054] (2) Synthesis of modified zirconium phosphate:

[0055] Put zircon...

Embodiment 3

[0062] (1) Synthetic modified resin:

[0063] a. Preparation of mixed materials: heat organic fluorine powder and epoxy resin in a water bath, stir until completely melted, add methyltetrahydrophthalic anhydride, 2,4,6-tris(dimethylaminomethyl)phenol, and stir for 2 hours , let stand for reaction for 30min, keep the temperature constant, continue to add organic silicon, N-aminoethyl-3-aminopropylmethylsiloxane, and stir at 600r / min for 30min to obtain resin mixture;

[0064] b. Preparation of polymer material: mix methyl acrylate and methanol, add diethylenetriamine, stir and mix well, stand for reaction under nitrogen for 5 hours, raise the temperature from room temperature to 160°C, and react under reduced pressure for 5 hours to obtain polymeric material;

[0065] c. Mix the resin mixture and the polymer material, melt at 250°C, stir and react for 4 hours, cool down to 155°C and solidify for 5 hours to obtain a modified resin;

[0066] (2) Synthesis of modified zirconium ...

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Abstract

The invention discloses a friction-resistant high-toughness nylon 6 composite material and a preparation method thereof. The epoxy resin is modified by utilizing organic fluorine powder and organic silicon, so that the water absorption rate of the resin is reduced, and the toughness and flame retardance of the nylon 6 are improved; an amino-terminated group is grafted on the surface of the epoxy resin through anionic polymerization, so that the compatibility of the modified resin and a nylon 6 composite material matrix is enhanced; a protective layer is formed on a nylon 6 interface through nano calcium phosphate, so that the friction loss is reduced, and the friction of the nylon 6 is improved; the polyurethane-coated modified basalt is utilized to lower the water absorptivity of the nylon 6 and enhance the mechanical properties of the nylon 6 composite material; through the synergistic effect of modified fiber, modified calcium phosphate, the modified resin, an antistatic agent and an anti-aging agent, the flame retardancy, mechanical properties and friction resistance of the nylon 6 are further enhanced, the water absorption of the nylon 6 composite material is greatly reduced,the experimental principle is simple, the operation is convenient, and the nylon 6 composite material has very good application prospects.

Description

technical field [0001] The invention relates to the technical field of polymer composite materials, in particular to a friction-resistant high-toughness nylon 6 composite material and a preparation method thereof. Background technique [0002] Nylon 6 is light in weight, stable in properties, easy to process and shape, acid and alkali resistant, and is widely used in engineering plastics, fibers, films and other fields; however, nylon 6 also has some problems. For example, nylon 6 molecular segments contain extremely polar The amide group is very easy to react with water molecules to form hydrogen bonds, resulting in nylon products with high water absorption, low dimensional stability, weak impact resistance in dry or low temperature conditions, and acid and alkali resistance. Problems limit the development of nylon 6 in some fields. [0003] With the development of science and technology and the improvement of living standards, traditional nylon 6 materials can no longer m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L77/02C08L63/00C08K9/10C08K7/10C08K9/06C08K3/32C08K3/36
CPCC08K2003/328C08L77/02C08L2201/02C08L2205/04C08L2205/05C08L63/00C08K9/10C08K7/10C08K9/06C08K3/32C08K3/36
Inventor 成丹丹
Owner 成丹丹
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