Cashew nut shell oil modified phenolic resin as well as preparation method and application thereof

A cashew nut shell oil and phenolic resin technology, applied in the field of synthetic resins, can solve the problems of non-renewable raw materials and high toxicity of phenol, and achieve the effects of renewable cost-effective, low toxicity and good toughness

Inactive Publication Date: 2013-05-15
CARDOLITE CHEM ZHUHAI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since some phenols are still introduced as reaction raw materials in the above-mentioned novel phenolic resins, there are still disadvantages that phenol is highly toxic and the raw materials are not renewable.

Method used

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  • Cashew nut shell oil modified phenolic resin as well as preparation method and application thereof
  • Cashew nut shell oil modified phenolic resin as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A cashew nut shell oil modified phenolic resin, the raw material of which consists of the following components: 300g cashew nut shell liquid (1.0 mol), 78g paraformaldehyde (2.6 mol), 9.6g sodium hydroxide.

[0031] The preparation method of above-mentioned cashew nut shell oil modified phenolic resin comprises the following steps:

[0032] 1) Add cashew nut shell oil and sodium hydroxide in turn to the four-necked reaction flask, preheat to 60°C, then add paraformaldehyde in batches under stirring, and control the system temperature at 60-70°C at the same time, until the paraformaldehyde is completely dissolve, get a solution;

[0033] 2) Heat the solution to 90°C and react for 3 hours. During the reaction, a large number of water droplets appeared on the bottle wall, and the product was obtained with a yield ≥ 95%, unreacted cashew nut shell oil ≤ 1%, unreacted formaldehyde ≤ 4%, The viscosity at 25°C is 6521cps, and the solid content is 83%.

Embodiment 2

[0035] A cashew nut shell oil modified phenolic resin, its raw material is composed of the following components: 300g cashew nut shell liquid (1.0 mol), 84g paraformaldehyde (2.8 mol), 19.2g triethylamine.

[0036] The preparation method of above-mentioned cashew nut shell oil modified phenolic resin comprises the following steps:

[0037] 1) Add cashew nut shell oil and triethylamine to the reactor, preheat to 80°C, then add paraformaldehyde in batches under stirring, while controlling the system temperature at 70-80°C, and wait until the paraformaldehyde is completely dissolved to obtain solution;

[0038] 2) Heat the solution to 95°C and react for 6 hours. During the reaction, a large number of water droplets appeared on the bottle wall, and the product was obtained with a yield ≥ 95%, unreacted cashew nut shell oil ≤ 1%, unreacted formaldehyde ≤ 5%, The viscosity at 25°C is 9254cps, and the solid content is 81.5%.

Embodiment 3

[0040] A cashew nut shell oil modified phenolic resin, its raw material is composed of the following components: 300g cashew nut shell oil (1.0 mol), 194.6g formaldehyde solution (mass fraction 37%, of which formaldehyde is 2.4 mol), 3.7g sodium hydroxide.

[0041] The preparation method of above-mentioned cashew nut shell oil modified phenolic resin comprises the following steps:

[0042] 1) Add cashew nut shell oil and sodium hydroxide to the reactor, preheat to 70°C, then add formaldehyde solution dropwise under stirring, while controlling the system temperature at 70-80°C to obtain a solution;

[0043] 2) Heat the solution to 92°C and react for 2 hours. During the reaction, a large number of water droplets appeared on the bottle wall, and the product was obtained with a yield ≥ 95%, unreacted cashew nut shell oil ≤ 1%, unreacted formaldehyde ≤ 4%, The viscosity at 25°C is 5525cps, and the solid content is 84%.

[0044] Formaldehyde or paraformaldehyde is added in the syst...

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Abstract

The invention discloses a cashew nut shell oil modified phenolic resin and a preparation method and an application thereof. The resin is prepared by adding cashew nut shell oil and an alkali catalyst into a reactor, subsequently adding a coupling agent in different batches when stirring, completely dissolving the coupling agent, increasing the temperature and reacting so as to obtain the cashew nut shell oil modified phenolic resin. The cashew nut shell oil modified phenolic resin is prepared by reacting the natural and recyclable cashew nut shell oil instead of phenol; the yield of the cashew nut shell oil modified phenolic resin is high; the novel phenolic resin and relevant products have the characteristics of good toughness, small toxicity, reuseability and high performance cost ratio; and the phenolic resin is an energy-saving and environment-friendly product with excellent comprehensive properties. The cashew nut shell oil modified phenolic resin disclosed by the invention can be used as a substitution of the conventional phenolic resin, and can be applied to the field of phenolic foam.

Description

technical field [0001] The invention belongs to the field of synthetic resins, and relates to a cashew nut shell oil modified phenolic resin, a preparation method and an application thereof. Background technique [0002] Phenolic resins made from phenol are widely used in fields such as phenolic plastics, coatings, adhesives, phenolic fibers, and phenolic foams because of their low price and excellent performance, especially good fire resistance and low smoke. However, due to the influence of phenol's own molecular structure, the phenolic resin and related products produced by it have poor toughness, are brittle and easy to drop slag, and because phenol is highly toxic and comes from non-renewable petroleum resources, it does not meet the current energy conservation and environmental protection requirements. The social theme of social themes, thus to a certain extent also affects its scope of application. [0003] How to improve these deficiencies of traditional phenolic ph...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G8/30C08L61/14
Inventor 张凯黄绿
Owner CARDOLITE CHEM ZHUHAI
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