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A kind of preparation method of surface metallized aramid fiber

A kind of aramid fiber and surface metal technology, applied in the direction of fiber treatment, fiber type, metal material coating process, etc., can solve the problems of low utilization rate of palladium chloride, reduced fiber mechanical properties, low density, etc. performance, reduced operating steps, low density effects

Active Publication Date: 2021-03-30
CHINA BLUESTAR CHENGRAND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention aims to solve the problem that the roughening process in the preparation process of the existing surface metallized aramid fiber causes the mechanical properties of the fiber to decrease, the stannous chloride used in the sensitization process has certain harm to the environment, and the activation process is harmful to the expensive palladium chloride. In order to solve the problem of low utilization rate, a new method for preparing surface metallized aramid fibers is provided. The method is simple and easy to implement, safe and reliable, convenient to operate, economical and environmentally friendly, and easy to scale production; the obtained surface metallized aramid fibers It has the characteristics of low density, high strength and good conductivity

Method used

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  • A kind of preparation method of surface metallized aramid fiber
  • A kind of preparation method of surface metallized aramid fiber
  • A kind of preparation method of surface metallized aramid fiber

Examples

Experimental program
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Effect test

Embodiment 1

[0031] A preparation method for surface metallized aramid fibers, comprising the steps of:

[0032] ① Put the aramid fiber in the MF resin prepolymer with a solid content of 1% at 80°C for 10s. Dry the treated aramid fibers at 80°C after drying the surface moisture;

[0033] ② Put the aramid fiber treated in step ① in 20mg / L palladium chloride solution, activate it at 80°C for 1min, take it out, wash and dry;

[0034] ③Place the aramid fibers treated in step ② in a 10g / L sodium hypophosphite solution for 5 minutes, take it out, wash and dry;

[0035] ④Place the aramid fibers treated in step ③ in the silver plating solution at 40°C for 30 minutes, and the silver plating solution is composed of 30g / L silver nitrate, 30ml / L ammonia water, and 32ml / L formaldehyde solution (the formaldehyde content is 37%), then rinsed with water until neutral, and dried to obtain the surface silver-plated aramid fiber, and its properties are shown in Table 1.

Embodiment 2

[0037] A preparation method for surface metallized aramid fibers, comprising the steps of:

[0038] ① Place the aramid fiber in MF resin prepolymer with a solid content of 3% at 60°C for 30s. Dry the treated aramid fibers at 120°C after drying the surface moisture;

[0039] ②Place the aramid fiber treated in step ① in 100mg / L palladium chloride solution, activate it at 40°C for 5min, take it out, wash and dry;

[0040] ③Place the aramid fibers treated in step ② in 10g / L potassium hypophosphite solution for 5 minutes, take it out, wash and dry;

[0041] ④Place the aramid fiber treated in step ③ in the silver plating solution at 40°C for 30 minutes. The composition of the plating solution is the same as in Example 1, then rinse with water until neutral, and dry to obtain the surface silver-plated aramid fiber. Its properties are shown in the table 1.

Embodiment 3

[0043] A preparation method for surface metallized aramid fibers, comprising the steps of:

[0044] ① Place the aramid fiber in MF resin prepolymer with a solid content of 5% at 40°C for 30s. Dry the treated aramid fibers at 140°C after drying the surface moisture;

[0045] ② Put the aramid fiber treated in step ① in 60mg / L palladium chloride solution, activate it at 60°C for 2min, take it out, wash and dry;

[0046] ③Place the aramid fibers treated in step ② in a 60g / L sodium hypophosphite solution for 5 minutes, take it out, wash and dry;

[0047] ④Place the aramid fiber treated in step ③ in the silver plating solution at 40°C for 30 minutes. The composition of the plating solution is the same as in Example 1, then rinse with water until neutral, and dry to obtain the surface silver-plated aramid fiber. Its properties are shown in the table 1.

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Abstract

The invention provides a method for preparing surface metallization aramid fibers. The method includes steps of 1, carrying out aramid surface treatment, to be more specific, removing oil from aramidfibers, cleaning the aramid fibers, then placing the aramid fibers in melamine formaldehyde resin prepolymer solution, treating the aramid fibers at the temperatures of 20-80 DEG C for 5-60 s, then taking out the aramid fibers, mangling moisture on the surfaces of the aramid fibers and drying the aramid fibers; 2, carrying out activation, to be more specific, immersing the aramid fibers, which aretreated at the step 1, in activation solution, carrying out surface activation treatment on the aramid fibers and then removing residual solution on the surfaces of the aramid fibers by water; 3, carrying out reduction, to be more specific, placing the aramid fibers in reducing agents capable of reducing metal ions in the activation solution after the activation treatment is carried out on the aramid fibers, carrying out room-temperature reaction for 1-5 min, then rinsing the aramid fibers by water and drying the aramid fibers; 4, carrying out chemical plating, to be more specific, placing the reduced aramid fibers in plating solution, carrying out chemical plating on the aramid fibers, taking out the aramid fibers after the chemical plating is completely carried out on the aramid fibersand washing and drying the aramid fibers. The method has the advantages that the method is simple, feasible, safe, reliable, ecological and environmentally friendly and is convenient to operate, and large-scale production can be facilitated; the surface metallization aramid fibers prepared by the aid of the method are small in density, high in strength and good in electric conductivity, and the like.

Description

technical field [0001] The invention belongs to the field of surface metallization treatment of fiber materials, and in particular relates to a preparation method of surface metallized aramid fibers. Background technique [0002] Aramid fibers are widely used in advanced composite materials, protective materials, rubber reinforcement materials, cables and optical cables, industrial fabrics, building structure reinforcement materials, friction materials and sealing due to their excellent properties such as high strength, high modulus, high temperature resistance, and flame retardancy. materials and many other fields. However, aramid has low surface energy, high inertness, and lack of modifiable functional groups, so it has poor interfacial compatibility with the matrix, which affects the mechanical properties of composite materials and limits its application range. After metallization treatment on the surface of aramid fiber, it is beneficial to enhance the interface bonding...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06M11/83D06M15/423C23C18/30C23C18/36C23C18/40C23C18/44D06M101/36
CPCC23C18/30C23C18/36C23C18/405C23C18/44D06M11/83D06M15/423D06M2101/36
Inventor 周万立李兰英林志娇何鑫业
Owner CHINA BLUESTAR CHENGRAND CO LTD
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