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Blue MOFs/cast nylon nanometer composite material as well as preparation method and application thereof

A technology of nanocomposite materials and cast nylon, which is applied in the field of blue MOFs/cast nylon nanocomposites and its preparation, can solve the problems of low performance, polymerization inhibition, uneven material color, etc., and achieve good strength and toughness, and good comprehensive performance , The effect of simple preparation process

Active Publication Date: 2017-09-05
HUNAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention mainly aims at the degradation and sedimentation of machine blue pigments in the production of existing blue cast nylon, which leads to the problems of uneven color and low performance of the material, and provides a blue MOFs / cast nylon nanocomposite material, which is ingenious Using metal organic framework compounds of blue MOFs, framework structures with pores ranging from a few nanometers to tens of nanometers can be prepared by a reasonable method
And the material is blue, which solves the shortcoming of organic blue pigments inhibiting the polymerization of cast nylon systems

Method used

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  • Blue MOFs/cast nylon nanometer composite material as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] The material ratio in Table 1 is selected, and the blue MOFs are Cu(BDC)MOF.

[0047] S1. Add the blue MOFs and the aprotic polar solvent according to the above ratio into the kettle A containing the caprolactam monomer 1, adjust the temperature of the kettle A to 70-85°C, and carry out the stirring reaction for 0.5-2 hours;

[0048] S2. Warm up the kettle A in step S1 to 130-140° C., and vacuumize for 15-60 minutes under a certain degree of vacuum. The vacuum degree of the vacuum-evacuation is 99000-99997 Pa; then add an initiator to react in a vacuum for 15-30 minutes;

[0049] S3. Put the caprolactam monomer 2 into the kettle B, heat until the caprolactam monomer 2 melts and start vacuuming, the caprolactam monomer 2 is completely melted, add the catalyst and heat up to 130-140°C, and continue vacuuming for 10-15 minutes;

[0050] S4. After mixing the materials obtained in kettle A and kettle B, pour them into a mold at 150-170°C for polymerization and molding, react...

Embodiment 2

[0053] The material ratio in Table 1 is selected. The difference of Example 1 is that the raw material is Cu2(BDC)2(DABCD) for the blue MOFs, and the preparation process is the same as that of Example 1.

[0054] The properties of the prepared blue MOFs / cast nylon nanocomposites are shown in Table 2.

Embodiment 3

[0056] The material ratio in Table 1 is selected, and the difference of Example 1 is that the raw material is Cu2(NDC)2(DABCO) for the blue MOFs, and the preparation process is the same as that of Example 1.

[0057] The properties of the prepared blue MOFs / cast nylon nanocomposites are shown in Table 2.

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Abstract

The invention discloses a blue MOFs / cast nylon nanometer composite material as well as a preparation method and application thereof. The preparation method comprises the following steps: adding blue MOF and an aprotic polar solvent into a kettle A contained with caprolactam monomers, heating to the temperature of 70-85 DEG C, stirring for 0.5-2 hours, vacuumizing for 15-60 minutes, heating to the temperature of 130-140 DEG C, and adding an initiator for carrying out a vacuum reaction for 15-30 minutes; heating a kettle B filled with caprolactam monomers, heating to a dissolved state, vacuumizing, totally melting the monomers, adding a catalyst, heating to the temperature of 130-140 DEG C, and vacuumizing for 10-15 minutes; and finally, mixing the kettle A and the kettle B, pouring into a mold of 150-170 DEG C for performing polymerization molding, maintaining the temperature of 10-60 minutes, and demolding. By utilizing the color of blue MOFs and the frame structure, the blue MOFs and nylon matrix have a physical penetrating network combination. The material has the effects of improving the dimensional stability of the product, reducing the shrinkage ratio and reducing degree of crystallinity and melting point of the nylon.

Description

technical field [0001] The present invention relates to cast nylon nanomaterials and their preparation and application, more specifically, to blue MOFs / cast nylon nanocomposites and their preparation methods and applications. Background technique [0002] In 1960, Monsanto Company of the United States firstly poured caprolactam molten monomer at 140°C and basic catalyst directly into a mold at 150-200°C, and made molded products under normal pressure for about 15 minutes. This article is known as Monomer Casting Nylon, or MCPA6. MCPA6 has higher molecular weight, crystallinity, and better physical properties than ordinary PA6 because it is rapidly polymerized and molded at a temperature lower than that of PA6. [0003] In addition to the advantages of light weight, good mechanical properties, low noise, wear resistance and self-lubrication, MCPA6 also has some shortcomings, such as poor low-temperature impact performance, poor thermal stability, poor creep resistance, and l...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L77/02C08L87/00C08G69/16
CPCC08G69/16C08L77/02C08L2205/02C08L2205/03C08L2205/035C08L87/00
Inventor 赖登旺赵田李玉华刘小超刘跃军杨军
Owner HUNAN UNIV OF TECH
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