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Simple and convenient resorcinol formaldehyde resin hollow composite material and preparing method of derivative thereof

A technology of resorcinol-formaldehyde resin and composite materials, which is applied in the field of preparation of resorcinol-formaldehyde resin hollow composite materials and derivatives thereof, and can solve the problems of difficult structure control, high cost and high density of resorcinol-formaldehyde resin and other problems, to achieve the effect of good dispersion, simple preparation method and low density

Inactive Publication Date: 2015-11-18
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the existing problems of high density of resorcinol formaldehyde resin, complex preparation process of hollow structural materials, high cost and difficult structure control, the present invention provides a simple resorcinol formaldehyde resin hollow composite material and its derivatives The preparation method is used in the field of ablation-resistant heat insulation materials, and its carbonized derivatives can also be used as light-weight and easy-to-separate adsorption materials

Method used

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  • Simple and convenient resorcinol formaldehyde resin hollow composite material and preparing method of derivative thereof

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specific Embodiment approach 1

[0020] Embodiment 1: The preparation method of the resorcinol-formaldehyde resin hollow composite material and its derivatives provided in this embodiment is carried out according to the following steps:

[0021] 1. Soak the hollow glass microspheres in sodium hydroxide solution for 1.5 hours, wash with distilled water and dry to obtain the hollow glass microspheres after alkali washing; wherein, the concentration of the sodium hydroxide solution is 1.5mol / L;

[0022] Two, absolute ethanol and distilled water are configured ethanol solution according to the dosage ratio of 300g:98g, and mix under the condition of stirring;

[0023] 3. Disperse the hollow glass microspheres after alkali washing and the cationic surfactant in the above-mentioned ethanol solution in sequence; wherein, the cationic surfactant is cetyltrimethylammonium bromide, and the hollow glass after alkali washing The dosage ratio of microspheres to cetyltrimethylammonium bromide is 0.1g:0.75g, and the dispers...

specific Embodiment approach 2

[0030] Specific embodiment two: the preparation method of the resorcinol-formaldehyde resin hollow composite material and its derivatives provided by this embodiment is carried out according to the following steps:

[0031] 1. Soak the hollow glass microspheres in sodium hydroxide solution for 1.5 hours, wash with distilled water and dry to obtain the hollow glass microspheres after alkali washing; wherein, the concentration of the sodium hydroxide solution is 1mol / L;

[0032] Two, absolute ethanol and distilled water are configured ethanol solution according to the dosage ratio of 300g:60g, and mix under the condition of stirring;

[0033] 3. Disperse the hollow glass microspheres after alkali washing and the cationic surfactant in the above-mentioned ethanol solution in sequence; wherein, the cationic surfactant is cetyltrimethylammonium bromide, and the hollow glass after alkali washing The dosage ratio of microspheres to cetyltrimethylammonium bromide is 0.1g:0.75g, and th...

specific Embodiment approach 3

[0038] Specific embodiment three: the preparation method of the resorcinol-formaldehyde resin hollow composite material and its derivatives provided by this embodiment is carried out according to the following steps:

[0039] 1. Soak the hollow glass microspheres in sodium hydroxide solution for 1.5 hours, wash with distilled water and dry to obtain the hollow glass microspheres after alkali washing; wherein, the concentration of the sodium hydroxide solution is 0.8mol / L;

[0040] Two, absolute ethanol and distilled water are configured ethanol solution according to the dosage ratio of 300g:80g, and mix under the condition of stirring;

[0041] 3. Disperse the hollow glass microspheres after alkali washing and the cationic surfactant in the above-mentioned ethanol solution in sequence; wherein, the cationic surfactant is cetyltrimethylammonium bromide, and the hollow glass after alkali washing The dosage ratio of microspheres to cetyltrimethylammonium bromide is 0.4g:0.75g, an...

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Abstract

The invention discloses a simple and convenient resorcinol formaldehyde resin hollow composite material and a preparing method of derivative thereof. A surfactant modified hollow glass microspheres serves as a carrier, an in situ polymerization mode is used to enable the hollow glass microspheres to be coated by the resorcinol formaldehyde resin, the resorcinol formaldehyde resin hollow composite material is obtained and performs carbonizing treatment in the high temperature, and the resorcinol formaldehyde resin charring derivative is obtained. A mild solution phase synthesis method is utilized by the simple and convenient resorcinol formaldehyde resin hollow composite material, expensive reaction reagent does not need to be used, the carrier adopted is a high temperature-resistant material with a closed hollow structure, and the resorcinol formaldehyde resin hollow composite material can be obtained through one step without the removal of a template. The resorcinol formaldehyde resin hollow composite material has the characteristics of having a cavity structure and being low in density, good in dispersibility, simple in preparing method, low in weight and ablation resistance. The charring derivative with the cavity structure can be obtained through the carbonizing treatment and has the characteristics of being low in weight, easy to separate and ablation resistance.

Description

technical field [0001] The invention relates to a preparation method of resorcinol-formaldehyde resin hollow composite material and derivatives thereof. Background technique [0002] At present, my country's high-temperature insulation materials have problems such as high density and poor insulation performance. Carbon materials with cavity structures have been well developed due to their high temperature resistance, corrosion resistance, and light weight. The current method for preparing hollow materials usually adopts a complicated synthesis process or the method of sacrificing templates. After the reaction, steps such as post-processing to remove templates are required to obtain resorcinol-formaldehyde resin hollow materials. Contents of the invention [0003] In order to solve the existing problems of high density of resorcinol formaldehyde resin, complex preparation process of hollow structural materials, high cost and difficult structure control, the present inventio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G8/22C08K9/02C08K9/04C08K7/28
Inventor 徐慧芳王硕姜警李振奋钟正祥温泉
Owner HARBIN INST OF TECH
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