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Method for preparing and condensing polyaromatic hydrocarbon resin by using bamboo tar

A polycyclic aromatic hydrocarbon resin and bamboo tar technology, applied in the field of preparation of condensed polycyclic aromatic hydrocarbon resin, can solve the problems of high cost, limited production and application, non-renewable, etc., and achieve high adhesion effect

Inactive Publication Date: 2010-06-02
BEIJING UNIV OF CHEM TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The cost of raw materials used in these synthetic COPNA resins is high and non-renewable, which limits its production and application

Method used

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  • Method for preparing and condensing polyaromatic hydrocarbon resin by using bamboo tar
  • Method for preparing and condensing polyaromatic hydrocarbon resin by using bamboo tar

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] COPNA resin was synthesized by bamboo tar-tere-phenylenedimethanol system.

[0023] (1) taking by weighing bamboo tar and tere-xylylenedimethanol that mass ratio is 1: 1 is put into the flask, adding the p-toluenesulfonic acid that accounts for bamboo tar and tere-xylylenedimethanol quality 9% is catalyst, feeds N 2 , control the reaction temperature at 160°C, and take it out after 11 hours of reaction. The product in the flask is a black viscous liquid at the reaction temperature, and filaments can be pulled out when cooled, and it is a black brittle solid at room temperature.

[0024] The reaction took 11 hours, and the yield was 83.93% obtained from (the mass of the substance in the flask after the reaction) ÷ (the mass of the substance in the flask before the reaction).

[0025] The softening point and β-resin content of the obtained product were measured. The softening point test adopts the needle injection method. After crushing 3-4g resin, put it into the softe...

Embodiment 2

[0028] The method of operation is the same as in Example 1, except that the amount of p-toluenesulfonic acid used is 7% of the quality of bamboo tar and terephthalamide, the reaction temperature is 140°C, and the reaction time is taken out after 9h25min, and the product becomes Black brittle solid. The softening point and β-resin content of the synthetic product were tested, and the measured softening point was 78°C, which indicated that the resin was easy to process; the β-resin content was 92%, and the resulting product had high cohesiveness. figure 2 The TG-DSC test shows that the initial pyrolysis temperature of the synthesized product can reach 235 °C.

[0029] The curing conditions are N2 protection, heat preservation at 120°C for 20 hours in a blast oven, and heat preservation at 200°C for 2 hours to obtain an insoluble and infusible high-temperature-resistant resin.

Embodiment 3

[0031] The operating method is the same as in Example 1, except that the concentrated sulfuric acid (mass concentration is 98%) is used as a catalyzer, which is added dropwise to the reaction system. The mass ratio of sulfuric acid is 5%, and the reaction temperature is 140°C. Two cases were violent, the reaction time was shortened to 2h, and the softening point of the product was measured to be 84°C. The curing step is the same as in Example 1 to obtain an insoluble and infusible high temperature resistant resin.

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Abstract

The invention relates to a method for preparing polyaromatic hydrocarbon resin by using biomass materials, in particular to a method for preparing and condensing polyaromatic hydrocarbon resin by using bamboo tar. By adopting the method of using the bamboo tar to condense and prepare the polyaromatic hydrocarbon resin under the existence of crosslinker and protonic acid catalyst, the invention can prepare and condense the high-temperature resistant polyaromatic hydrocarbon resin not by non-renewable resources of coal tar, petroleum asphalt and the like. The invention ahs the advantages of rapid, simple and convenient operation, time saving, good cohesiveness of the obtained resin, high residual carbon after solidification, and favorable property of the obtained resin.

Description

Technical field: [0001] The invention relates to a method for preparing condensed polycyclic aromatic hydrocarbon resin by using biomass raw materials, in particular to a method for preparing condensed polycyclic aromatic hydrocarbon resin by using bamboo tar. Background technique: [0002] Condensed polycyclic aromatic hydrocarbon resin (referred to as COPNA resin) is a huge molecule with a condensed polycyclic structure as the main body. It has excellent high temperature resistance, good formability, good affinity with carbon materials and special electromagnetic properties, and has become a new field of carbon material research. The resin can be used as a precursor for preparing various carbon materials, and has broad application prospects in carbon material binders, wear-resistant brake friction materials, high heat-resistant fibers, and the like. [0003] COPNA resin is obtained by high-temperature polymerization of condensed-ring aromatic compounds such as naphthalene...

Claims

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Application Information

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IPC IPC(8): C08G61/10
Inventor 陈晓红岳永德孟月娜刘磊
Owner BEIJING UNIV OF CHEM TECH
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