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Polyimide nano particle as well as preparation method and application thereof

A technology of polyimide and nanoparticles, applied in textiles and papermaking, single-component synthetic polymer rayon, fiber chemical characteristics, etc., can solve problems such as insufficient compatibility

Pending Publication Date: 2022-05-13
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention relates to a polyimide nanoparticle and its preparation method and application, which mainly solves the problem of insufficient compatibility of polyimide materials and nanoparticle blending, so that the material can take into account the performance of the bulk material and the nanoparticle material Advantage

Method used

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  • Polyimide nano particle as well as preparation method and application thereof
  • Polyimide nano particle as well as preparation method and application thereof
  • Polyimide nano particle as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0077] 1. The 2.00g homophthalic anhydride (9.16mmol) was dispersed into 98.00g of water, and the heating solution temperature was stirred to 80 °C for 2h until the monomer was completely dissolved, at which time the solution was given an aqueous solution of homophthalic acid.

[0078] 2. 1.51g tri(4-aminophenyl)amine (5.19mmol) and 0.21g 3,5-diaminobenzoic acid (1.38mmol) dissolved in water, to be dissolved and dispersed, slowly added to the homophenylenetetracarboxylic acid solution to form a salt, stirred to obtain a powder solid, select ethanol solvent for cleaning and filtration, vacuum drying to obtain a salt monomer composed of acid and amine composite.

[0079] 3. Disperse 1.00g of salt into 99.00g of water, then transfer it to a hydrothermal reactor with stirring, set the reaction temperature to 180 °C, stirring the reaction for 6h.

[0080]4. The product is dispersed into water / ethanol solution for cleaning, filtering, and gradually replacing the water / ethanol solution ...

Embodiment 2

[0084] 1. As in Step 1 of Example 1, a homophthalic acid solution is obtained.

[0085] 2. 0.68g of 1,3,5,7-tetraaminoadamantane (3.44mmol) and 0.35g of 3,5-diaminobenzoic acid (2.29mmol) dispersed in ethanol solution, to be dissolved and dispersed, slowly added to the homophthalic acid solution to form a salt, stirred to obtain a powder solid, select an ethanol solvent for cleaning and filtration, vacuum drying to obtain a salt monomer composed of acid and amine compound.

[0086] 3. Perform a hydrothermal reaction as in step 3 of Example 1.

[0087] 4. As in step 4 of Example 1, the sample is cleaned and dried, and the spherical nanoparticles with a size distribution of 0.1~ 0.5 μm are obtained by electron microscopy, such as Figure 2 as shown.

[0088] 5. As in step 5 of Example 1, the blend coating film is carried out, and a polyimide composite film is prepared.

[0089] 6. After the polyimide composite film is modified, the surface wettability is improved, the contact angle o...

Embodiment 3

[0091] 1.00g of homophthalicarboxylic dianhydride (4.58mmol) and 1.35g of 3,3,4,4-biphenyltetracarboxylic dianhydride (4.58mmol) dispersed into 97.65g of water, heated solution temperature to 80 °C stirred for 4h reaction, added 10g ethanol, so that the two tetraic acid monomers completely dissolved in solution.

[0092] 2. 1.51g tri(4-aminophenyl)amine (5.19mmol) and 0.21g 3,5-diaminobenzoic acid (1.38mmol) dissolved in water, to be dissolved and dispersed, slowly added to the homophenylenetetracarboxylic acid solution to form a salt, stirred to obtain a powder solid, select ethanol solvent for cleaning and filtration, vacuum drying to obtain a salt monomer composed of acid and amine composite.

[0093] 3. Perform a hydrothermal reaction as in step 3 of Example 1.

[0094] 4. As in step 4 of Example 1, the sample is cleaned and dried, and the spherical nanoparticles with a size distribution of 2 to 4 μm are obtained by electron microscopy characterization statistics.

[0095] 5. Th...

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Abstract

The invention relates to polyimide nanoparticles as well as a preparation method and application thereof. The polyimide nanoparticles include a structural unit derived from at least one of a triamine and a tetramine, a structural unit derived from a diamine having a polar hydrophilic group, and a structural unit derived from a dianhydride. The preparation method comprises the following steps: reacting dianhydride with amine to form salt, dispersing the obtained salt in water, and carrying out hydrothermal synthesis to obtain the polyimide nanoparticles. According to the invention, the obtained nanoparticles and polyimide or a precursor polyamide acid solution thereof are subjected to blending modification, and a material with excellent comprehensive performance can be obtained after molding processing.

Description

Technical field [0001] The present invention relates to the field of polyimide materials, specifically, is involved in a polyimide nanoparticle and preparation method and application thereof, for achieving polyimide material compatibility good compatibility of blending modification, to improve the properties of the material. Background [0002] Nanoparticle blending is a general technology for achieving material properties improvement in modern times, and can achieve significant improvements in mechanical properties (enhanced, toughened), thermal properties (glassization temperature, thermal decomposition temperature), electrical properties (conductivity, dielectric properties) and other properties. However, in the process of blending nanoparticles with substrates, they are often accompanied by the problem of insufficient compatibility, resulting in poor dispersion of nanoparticles in the matrix, and even because of the agglomeration of nanoparticles, material defects occur, so ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G73/10C08J3/12C08J5/18C08L79/08D01F6/94
CPCC08G73/1042C08J3/12C08J5/18C08L79/08D01F6/94C08J2379/08C08L2205/025
Inventor 张培斌李应成崔晶刘京妮陈雪
Owner CHINA PETROLEUM & CHEM CORP
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