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Delustering PA (Polyamide) master batch and preparation method thereof

A masterbatch and extinction technology, applied in the preparation of microspheres, microcapsules, rayon manufacturing, etc., can solve the problems of small relative molecular weight, easy decomposition, no improvement in extinction performance, etc.

Active Publication Date: 2018-05-22
浙江东太新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The common surface modification method is coupling agent modification, but the coupling agent is only connected to the surface of nanoparticles in the form of chemical bonds, which does not improve the matting performance itself, and the relative molecular weight of the silane coupling agent is small. Easy to decompose, not conducive to the preparation of high-performance fibers by melting

Method used

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  • Delustering PA (Polyamide) master batch and preparation method thereof
  • Delustering PA (Polyamide) master batch and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] A preparation method for matte PA masterbatch, the steps are as follows:

[0058] (1) preparing hollow porous microspheres coated with titanium dioxide nanoparticles;

[0059] (1.1) Preparation of modified titanium dioxide:

[0060] a) Disperse titanium dioxide in absolute ethanol and add n-butyl titanate dropwise to obtain a mixed dispersion after ultrasonic stirring, wherein the mass ratio of titanium dioxide, absolute ethanol and n-butyl titanate in the mixed dispersion is 4:150: 1;

[0061] b) Add ethanol-water mixture dropwise to the mixed dispersion, react at 70°C for 4 hours, and age at room temperature for 11 hours to obtain an aged solution. The mass ratio of ethanol to water in the ethanol-water mixture is 2:1, and the ethanol-water mixture The addition amount is 20% of the volume of the mixed dispersion liquid;

[0062] c) Drop γ-methacryloxypropyltrimethoxysilane into ethanol aqueous solution, stir and hydrolyze at room temperature for 2 hours, add it to ...

Embodiment 2

[0070] A preparation method for matte PA masterbatch, the steps are as follows:

[0071] (1) preparing hollow porous microspheres coated with titanium dioxide nanoparticles;

[0072] (1.1) Preparation of modified titanium dioxide:

[0073]a) Disperse titanium dioxide in absolute ethanol and add n-butyl titanate dropwise to obtain a mixed dispersion after ultrasonic stirring, wherein the mass ratio of titanium dioxide, absolute ethanol and n-butyl titanate in the mixed dispersion is 5:200: 1;

[0074] b) Add the ethanol-water mixture dropwise to the mixed dispersion, react at 60°C for 4 hours, and age at room temperature for 10 hours to obtain an aged solution, the amount of ethanol added in the ethanol-water mixture is 30% of the volume of the mixed dispersion;

[0075] c) Drop γ-methacryloyloxypropyltrimethoxysilane into ethanol aqueous solution, stir and hydrolyze at room temperature for 3h, add it into the aging liquid dispersed by ultrasonic for 40min, and reflux at 65°C...

Embodiment 3

[0083] A preparation method for matte PA masterbatch, the steps are as follows:

[0084] (1) preparing hollow porous microspheres coated with titanium dioxide nanoparticles;

[0085] (1.1) Preparation of modified titanium dioxide:

[0086] a) Disperse titanium dioxide in absolute ethanol and add n-butyl titanate dropwise to obtain a mixed dispersion after ultrasonic stirring, wherein the mass ratio of titanium dioxide, absolute ethanol and n-butyl titanate in the mixed dispersion is 6:250: 1;

[0087] b) Add ethanol-water mixture dropwise to the mixed dispersion, react at 65°C for 4.5 hours, and age at room temperature for 11 hours to obtain an aged solution. The mass ratio of ethanol to water in the ethanol-water mixture is 3:1, and the mixture of ethanol and water The amount of liquid added is 25% of the volume of the mixed dispersion liquid;

[0088] c) Drop γ-methacryloxypropyltrimethoxysilane into ethanol aqueous solution, stir and hydrolyze at room temperature for 2.5...

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Abstract

The invention relates to delustering PA (Polyamide) master batch and a preparation method thereof. The method comprises the following steps: uniformly mixing PA slices with hollow porous microspherescoated with titanium dioxide nano-particles, performing fusion, extrusion and granulation and performing drying treatment to obtain the delustering PA master batch, wherein the hollow porous microspheres are mainly prepared from the titanium dioxide nano-particles and a cross-linked ball which is bonded with the titanium dioxide nano-particles through a covalent bond and is coated with the surfaces of the titanium dioxide nano-particles; the interior of the cross-linked ball is hollow and the surface of the cross-linked ball is porous and the cross-linked ball has a cross-linked structure; thecross-linked structure is formed by performing mutual cross-linking on copolymer molecular chains containing styrene and bifunctional dimethacrylate monomer structural units. Hollow porous microspheres are uniformly dispersed in the prepared delustering PA master batch, and after the delustering PA master batch is added, a filtration pressure value of PA resin of which the content of titanium dioxide is 5 wt% is 0.60 to 2.86bar / g. The method disclosed by the invention is convenient and simple in process, and the prepared master batch has the advantages of good delustering effect and low pressure to spinning assemblies and is wide in application range.

Description

technical field [0001] The invention belongs to the field of fiber preparation, and in particular relates to a matting PA masterbatch and a preparation method thereof. Background technique [0002] Matte fiber, also known as dull fiber, refers to a chemical fiber with a matte surface. The method of preparing matting fiber is usually to add a matting agent into the spinning solution or melt before spinning, and form it by spinning. The obtained matting fiber can scatter light and eliminate luster to reduce transparency and increase whiteness. In recent years, full-dull polyester fiber has been more and more accepted by the weaving industry due to its unique external appearance characteristics. At the same time, with the breakthrough of domestic extinction fiber preparation technology, the application field of full extinction fiber has been continuously expanded, especially in pongee and wool-like fabrics. [0003] Titanium dioxide has outstanding tinting strength, hiding po...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L77/00C08K9/10C08K9/06C08K9/04C08K3/22C08J3/22D01F1/10B01J13/04
CPCB01J13/04C08J3/226C08J2477/00C08K9/04C08K9/06C08K9/10C08K2003/2241D01F1/10
Inventor 詹伟东孙宾许文菊肖露露翟丽鹏孙小国李晓明
Owner 浙江东太新材料有限公司
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