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Thermosetting process for furan resin impregnated graphite material and equipment thereof

A technology of furan resin and impregnated graphite, which is applied in the direction of chemical liquid solidification and pressure vessels used in chemical processes, etc. It can solve the problems of unsuitable control of the polymerization speed of furan resin, cannot be stored for repeated use, large equipment and pipelines, etc., and achieves the best use effect Good, uniform and stable performance, easy to store

Pending Publication Date: 2017-08-04
NANTONG INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this invention, a large amount of strong acid is used, which is highly corrosive to equipment and pipelines, and the working conditions are harsh. Moreover, the polymerization speed of the furan resin added with acid is not suitable for control, and cannot be stored for repeated use.

Method used

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  • Thermosetting process for furan resin impregnated graphite material and equipment thereof
  • Thermosetting process for furan resin impregnated graphite material and equipment thereof
  • Thermosetting process for furan resin impregnated graphite material and equipment thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Select 2 blocks (20 mesh size, average particle size about 0.83mm), square graphite blocks with a length of 140 mm, a width of 140 mm, and a height of 100 mm, and dry them for 13 to 15 hours. Then vacuum-0.089MPaG in the immersion container, time 4h; then pressurize 0.6MPaG immersion time 6h, regurgitation 6h; finally in such as figure 1 In the shown polymerization reactor, the heat treatment curing reaction is carried out at a maximum temperature of 120° C. and a pressure of 0.55 MPa, and the immersion heat treatment is performed three times. The experimental data are shown in Table 1.

Embodiment 2

[0028] Select 2 blocks of graphite block size (specification 10 mesh, average particle size about 2.1mm), square sample size 140mm long, 140mm wide, 100mm high graphite block, first dry for 12h. Then vacuum-0.085MPa in the immersion vessel for 3-4 hours; then pressurize at 0.6MPa, immerse for 5 hours, vomit for 4 hours, and immerse and vomit three times. Finally, heat treatment and curing reaction is carried out in the polymerization reactor with a maximum temperature of 120° C. and a pressure of 0.6 MPa. The experimental data are shown in Table II.

[0029] Table I

[0030]

[0031] Table II

[0032]

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PUM

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Abstract

The invention discloses a thermosetting process for a furan resin impregnated graphite material. The process comprises the following steps in the sequence: drying a graphite material for 6-24h at about 155 DEG C; mixing furan resin with a neutral curing agent; and after impregnation or regurgitation for one time or many times, and gradually raising the temperature to about 120 DEG C within 4-8 hours in a polymerization reaction kettle for performing a curing reaction. A blasting safety pipeline is arranged on the polymerization reaction kettle in the equipment, and an anti-explosive cover is arranged inside. The curing process disclosed by the invention has the advantages of being energy-saving, anti-explosive and unfavorable to etch the equipment, and the raw materials are not acidic raw materials, so that the material is easily stored and repeatedly used.

Description

technical field [0001] The invention relates to the application of a furan resin and its curing technology. Background technique [0002] Furan resin refers to the general term for resins produced with furfuryl alcohol and furfural having a furan ring as raw materials. Under the action of an acidic curing agent, the traditional furan resin can open the double bond in the furan ring, undergo addition polymerization, and cure to insoluble And infusible solids, the types include furfuryl alcohol resin, furfural resin, furfurone resin, furfurone-formaldehyde resin, etc. Furan resin has excellent resistance to acid, alkali, salt and organic solution, and is an excellent preservative and binder. However, the furan resin reacts violently with the acidic curing agent, the heat is large, and the release of more water is easy to form bubbles, which makes the impermeability of the cured product worse and brittle; moreover, the pot life after preparation is short and the operation is i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J19/06B01J3/04C08K3/04C08L61/00
CPCB01J3/04B01J19/06C08K3/04B01J2219/00135B01J2219/00063C08L61/00
Inventor 赵桂花徐志锋张晓天
Owner NANTONG INST OF TECH