Nano fiber and preparing method thereof

A nanofiber and melamine technology, applied in the field of nanofibers and their preparation, can solve the problems such as no public reports on the preparation method of melamine-phloroglucinol-formaldehyde resin nanofibers, and achieve easy large-scale production and good adsorption. Ability, simple effect of preparation method

Active Publication Date: 2016-09-14
ZHEJIANG NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] Check the relevant literature, there is no public report on melamine-phloroglucinol-formaldehyde resin nanofibers and its preparation method

Method used

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  • Nano fiber and preparing method thereof
  • Nano fiber and preparing method thereof
  • Nano fiber and preparing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Add 4.4g of phloroglucinol to 40g of deionized water, stir and dissolve at 40°C, continue to add 8.5g of formaldehyde solution with a mass fraction of 37%, stir for 100min, and record it as solution A; add 4.4g of melamine to 40g of deionized water, After stirring and dissolving at 70°C, add 8.5g of 37% formaldehyde solution. After stirring for 10 minutes, the solution becomes clear, which is recorded as solution B; add solution B to solution A, and continue stirring for 30 minutes. After the system is uniform, place it at 95°C Reaction in the oven for 24h. Suction filtration, washing, and overnight drying of the filter cake at 60°C to obtain the product. SEM images and TEM images show that the prepared samples are nanofibers with a diameter of 20-100nm. For SEM images, see figure 1 , TEM image see figure 2 . -196°CN 2 Adsorption-desorption isotherms at relative pressure p / p 0 There is an adsorption amount at 0 = There is a large amount of adsorption at 0.9~1.0 ac...

Embodiment 2

[0038] The preparation steps are the same as in Example 1, and the raw material ratio and reaction conditions are shown in Table 1. SEM images and TEM images show that the prepared samples are nanofibers with a diameter of 10-30nm. For SEM images, see Figure 5 , TEM image see Image 6 . -196°CN 2 The BET specific surface area of ​​the sample for adsorption determination is 143m 2 / g, the total pore volume is 0.30cm 3 / g.

Embodiment 3

[0040] The preparation steps are the same as in Example 1, and the raw material ratio and reaction conditions are shown in Table 1. SEM images and TEM images show that the prepared samples are nanofibers with a diameter of 30-200nm. For SEM images, see Figure 7 , TEM image see Figure 8 . -196°CN 2 The BET specific surface area of ​​the sample for adsorption determination is 22m 2 / g, the total pore volume is 0.06cm3 / g.

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Abstract

A nano fiber and a preparing method thereof are provided; the nano fiber is a melamine-phloroglucinol-formaldehyde resin nano fiber; the preparing method comprises the steps: adding phloroglucinol into water, stirring to dissolve, continuing to add a formaldehyde solution, and stirring to obtain a solution A; adding melamine into water, stirring to dissolve, continuing to add a formaldehyde solution, and stirring to obtain a solution B; mixing the solution A and the solution B in a certain proportion, stirring, and carrying out a reaction; and filtering, washing and drying to obtain the product. The preparation method is simple, safe, environmentally friendly, and prone to scale production.

Description

technical field [0001] The invention relates to a nanofiber and a preparation method thereof. Background technique [0002] Nanofibers refer to linear materials with a diameter of nanoscale (1-100 nm) and a relatively large length with a certain aspect ratio. Nanofibers exhibit many excellent properties, such as very large specific surface area (its specific surface area is 1000 times that of micron fibers), flexibility and super mechanical behavior (such as: hardness and tensile strength), these excellent characteristics make nanofibers Fibers have many important uses. For example, nanofibers are implanted on the surface of the fabric to make an amphiphobic interface fabric, which can not only waterproof, but also oilproof and antifouling; nanofibers can also be used for purification and filtration of chemical, pharmaceutical and other products; fibers can also be used as structural enhancer. Invention patent (CN 103055722B) discloses a nanofiber membrane with heavy meta...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G14/10
CPCC08G14/10
Inventor 肖强金灿文俊俊
Owner ZHEJIANG NORMAL UNIVERSITY
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