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A kind of furan resin and preparation method thereof

A technology of furan resin and furfuryl alcohol, which is applied in the field of furan resin and its preparation, can solve the problems of serious environmental pollution, high nitrogen content, free formaldehyde, etc., and achieve the effects of low nitrogen content, high strength, and stable quality and performance

Active Publication Date: 2018-07-31
霍山县忠福机电科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing furan resins often have the following defects: free formaldehyde, high nitrogen content, and serious environmental pollution

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A kind of furan resin, comprises the raw material of following weight part:

[0024] 4300 parts of furfuryl alcohol, 390 parts of phenol, 390 parts of paraformaldehyde, 65 parts of acetone, 10 parts of potassium hydroxide with a mass fraction of 48%, 10 parts of phthalic anhydride, 70 parts of methanol, 7 parts of glacial acetic acid, 18 parts of urea, and 20 parts of silane.

[0025] The preparation method of above-mentioned furan resin, concrete steps are as follows:

[0026] (1) Start the stirring device of the reactor, pass cooling water, make the temperature of the reactor lower than 35°C, add phenol, paraformaldehyde, acetone and part of furfuryl alcohol in the reactor, and stir evenly;

[0027] (2) Potassium hydroxide is added to the reaction kettle, the temperature is raised to 40-65° C., and the heat preservation reaction is carried out for 0.9-1.1 hours;

[0028] (3) Heating up to 75-86°C, keeping the temperature for 0.9-1.1 hours;

[0029] (4) Add part of f...

Embodiment 2

[0037] A kind of furan resin, comprises the raw material of following weight part:

[0038] 4349 parts of furfuryl alcohol, 400 parts of phenol, 400 parts of paraformaldehyde, 70 parts of acetone, 12 parts of potassium hydroxide with a mass fraction of 48%, 12 parts of phthalic anhydride, 72 parts of methanol, 8 parts of glacial acetic acid, 20 parts of urea, and 24 parts of silane.

[0039] The preparation method of above-mentioned furan resin, concrete steps are as follows:

[0040] (1) Start the stirring device of the reactor, pass cooling water, make the temperature of the reactor lower than 35°C, add phenol, paraformaldehyde, acetone and part of furfuryl alcohol in the reactor, and stir evenly;

[0041] (2) Potassium hydroxide is added to the reaction kettle, the temperature is raised to 40-65° C., and the heat preservation reaction is carried out for 0.9-1.1 hours;

[0042] (3) Heating up to 75-86°C, keeping the temperature for 0.9-1.1 hours;

[0043] (4) Add part of f...

Embodiment 3

[0051] A kind of furan resin, comprises the raw material of following weight portion:

[0052] 4400 parts of furfuryl alcohol, 410 parts of phenol, 410 parts of paraformaldehyde, 75 parts of acetone, 15 parts of potassium hydroxide with a mass fraction of 48%, 15 parts of phthalic anhydride, 80 parts of methanol, 9 parts of glacial acetic acid, 22 parts of urea, and 25 parts of silane.

[0053] The preparation method of above-mentioned furan resin, concrete steps are as follows:

[0054] (1) Start the stirring device of the reactor, pass cooling water, make the temperature of the reactor lower than 35°C, add phenol, paraformaldehyde, acetone and part of furfuryl alcohol in the reactor, and stir evenly;

[0055] (2) Potassium hydroxide is added to the reaction kettle, the temperature is raised to 40-65° C., and the heat preservation reaction is carried out for 0.9-1.1 hours;

[0056] (3) Heating up to 75-86°C, keeping the temperature for 0.9-1.1 hours;

[0057] (4) Add part o...

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Abstract

The invention relates to furan resin and a preparation method thereof. The furan resin comprises the following raw materials in parts by weight: 4300-4400 parts of furfuryl alcohol, 390-410 parts of phenol, 390-410 parts of paraformaldehyde, 65-75 parts of acetone, 10-15 parts of 48% of potassium hydroxide by mass, 10-15 parts of phthalic anhydride, 70-80 parts of methanol, 7-9 parts of glacial acetic acid, 18-22 parts of urea and 20-25 parts of silane. By adopting the formula and method provided by the invention, the prepared furan resin has high strength and can be applied to a casting; compared with the resin in the prior art, the addition in the casting is greatly reduced, and thus the production cost of the casting is lowered; and moreover, the quality performance is stable, the content of free formaldehyde and nitrogen is low, and the yield of the casting can be increased while the environmental pollution is reduced.

Description

technical field [0001] The invention relates to the technical field of resin material preparation, in particular to a furan resin and a preparation method thereof. Background technique [0002] Furan resin is by far the most widely used polycondensation resin in foundry production, and the annual consumption has reached more than 500,000 tons. Furan resin refers to the general term for resins produced from furfuryl alcohol with a furan ring as a raw material. It solidifies into an insoluble and infusible solid in an acidic medium. Or various aldehyde modified furfuryl alcohol made of thermosetting resin. The existing furan resin often has the following defects: free formaldehyde, high nitrogen content, and serious environmental pollution. Contents of the invention [0003] The object of the present invention is to: provide a kind of free formaldehyde, the furan resin with low nitrogen content and its preparation method. [0004] In order to achieve the above object, the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G16/02C08G16/04
CPCC08G16/0262C08G16/04
Inventor 杜忠福杨德军
Owner 霍山县忠福机电科技有限公司
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