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Coupling agent, porous carburizing coating fiber and preparation method

A coupling agent and carbon coating technology, applied in the chemical characteristics of fibers, textiles and papermaking, etc., can solve the problems of low strength of activated carbon fibers, and achieve the effects of less environmental pollution, good mechanical strength, and less waste.

Active Publication Date: 2020-09-01
INST OF CHEM CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In view of the above analysis, the embodiment of the present invention aims to provide a coupling agent, porous carburized coated fiber and its preparation method to solve the problem of inherent low strength of activated carbon fiber itself in the prior art

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  • Coupling agent, porous carburizing coating fiber and preparation method
  • Coupling agent, porous carburizing coating fiber and preparation method
  • Coupling agent, porous carburizing coating fiber and preparation method

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preparation example Construction

[0050] The present invention also provides a preparation method of porous carburized coated fiber, using the coupling agent bis(2-furylmethoxy)dimethylsilane prepared by the above method, and using basalt fiber as matrix fiber, the preparation method Including the following steps:

[0051] Step 1, carrying out surface alkali etching treatment and acid etching treatment to the basalt fiber;

[0052] Specifically, in step 1, the present invention uses basalt fiber as the matrix fiber, and needs to perform etching treatment on its surface in order to introduce a porous carburized coating. Basalt is a mixture with unique physical and chemical properties formed from the solidification and crystallization of magma. Its chemical composition is represented by complex silicate minerals, such as albite NaAlSi 3 o 8 , Anorthite CaAl 2 Si 2 o 8 , diopside CaMg[Si 2 o 6 ], olivine (Mg,Fe)SiO 4 , ordinary pyroxene Ca(Mg,Fe)[Si 2 o 6 ] and other forms exist.

[0053] According to ...

Embodiment 1

[0074] This embodiment provides a method for preparing a porous carburized coated fiber, which specifically includes the following steps:

[0075] Step 1. 50g of basalt fibers were etched with sodium hydroxide solution and hydrochloric acid solution (the treatment conditions are listed in Table 1). After the treatment, the fibers were washed with deionized water until neutral, and dried in air at 110°C.

[0076] Synthesis of bis(2-furylmethoxy)dimethylsilane: mix 4.32g of furanmethanol and 1.84g of sodium hydroxide, cool to -5°C, add 2.58g of dichlorodimethylsilane dropwise, and wait until the addition is complete Afterwards, the temperature was raised to 25° C. to continue the reaction for 1.5 hours, and the solid salt was taken out by filtration, and the liquid product was bis(2-furylmethoxy)dimethylsilane.

[0077] Condensation of furanformaldehyde and furanmethanol monomer preparation: 9.6g furfuraldehyde, 22.56g furanmethanol and 0.65g catalyst maleic anhydride were heate...

Embodiment 2

[0085] Step 1. Soak 50 g of basalt fiber in a sodium hydroxide solution with a mass concentration of 3.5% at 40°C for 3 hours, take it out and wash it with deionized water until neutral; continue to soak it in a hydrochloric acid solution with a mass concentration of 5% at 35°C for 3 hours, After the treatment, the fibers were washed with deionized water until neutral, and dried in air at 110°C.

[0086] Synthesis of bis(2-furylmethoxy)dimethylsilane: mix 4.32g of furanmethanol and 1.84g of sodium hydroxide, cool to -5°C, add 2.58g of dichlorodimethylsilane dropwise, and wait until the addition is complete Afterwards, the temperature was raised to 25° C. to continue the reaction for 1.5 hours, and the solid salt was taken out by filtration, and the liquid product was bis(2-furylmethoxy)dimethylsilane.

[0087] Condensation of furanformaldehyde and furanmethanol monomer preparation: 9.6g furfuraldehyde, 22.56g furanmethanol and 0.65g catalyst maleic anhydride were heated to 85°...

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Abstract

The invention relates to a coupling agent, a porous carburizing coating fiber and a preparation method thereof, and belongs to the technical field of carbon fiber material preparation. The inherent low-strength problem of an existing activated carbon fiber is solved. The preparation method of the porous carburizing coating fiber comprises the following steps that 1, a basalt fiber is subjected tosurface acid and alkali etching treatment; 2, the surface modified basalt fiber is coated with a tetrahydrofuran solution of bis(2-furylmethoxy)dimethylsilane and a tetrahydrofuran solution of furaldehyde and furan methanol condensation resin, and the coating layer is further polymerized and solidified; and 3, the basalt fiber after coating is carbonized and activated to obtain the basalt fiber with a porous carburizing coating. According to the preparation method, the basalt fiber is adopted as a matrix fiber, a porous carbon layer is formed by surface carburizing treatment, thus the porous carburizing coating fiber has the pore characteristics of the activated carbon fiber, and meanwhile has good mechanical strength of the basalt fiber.

Description

technical field [0001] The invention relates to the technical field of new materials, in particular to a coupling agent, a porous carburized coated fiber and a preparation method thereof. Background technique [0002] The adsorption separation process is a very common natural process. Through the continuous synthesis and manufacture of various adsorption materials, the adsorption separation process is widely used in chemical engineering, biomedicine, analysis and testing, environmental governance and other fields. With the emergence of a large number of environmental problems such as urban and industrial sewage treatment, heavy metal pollution, organic oil pollutants, clean drinking water, VOCs, waste gas treatment and carbon dioxide capture and recovery, efficient adsorption materials that meet various specific performance requirements are required, but in In practical applications, activated carbon, resin and activated alumina are the few types that can satisfy the applica...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F9/12C03C25/68C03C25/44C03C25/12
CPCC03C25/12C03C25/44C03C25/68D01F9/12
Inventor 李峰波袁国卿
Owner INST OF CHEM CHINESE ACAD OF SCI
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