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Method for preparing honeycomb-like active carbon through foaming polyurethane

A technology of honeycomb activated carbon and polyurethane, applied in chemical instruments and methods, alkali metal oxides/hydroxides, inorganic chemistry, etc., can solve the problems of limited application fields and low utilization rate, achieve good adsorption effect and improve utilization rate, the effect of improving the effective utilization rate

Inactive Publication Date: 2011-09-14
NORTHEAST FORESTRY UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problem of limited application fields and low utilization rate of existing activated carbon due to shape limitation, the present invention provides a method for preparing honeycomb activated carbon by foaming polyurethane method

Method used

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  • Method for preparing honeycomb-like active carbon through foaming polyurethane
  • Method for preparing honeycomb-like active carbon through foaming polyurethane
  • Method for preparing honeycomb-like active carbon through foaming polyurethane

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specific Embodiment approach 1

[0008] Specific Embodiment 1: The preparation method of honeycomb activated carbon in this embodiment is carried out according to the following steps: 1. Weigh 5 to 6 parts of polyether, 0.1 to 0.2 parts of hard foam silicone oil, and 0.08 to 0.09 parts of water according to the ratio of parts by weight , 0.005-0.009 parts of pentamethyldiethylenetriamine, 3.5-4.5 parts of dichlorofluoroethane, 0.12-0.2 parts of cycloethylamine, 0.24-0.3 parts of oil with a concentration of 4.5-5.5 g / L Sodium acid solution, 10 to 11 parts of coconut shell charcoal with a particle size of 8 to 12 meshes and 9.5 to 11 parts of isocyanate; 2. The polyether, hard foam silicone oil, water, pentamethyldiethylene three Mix amine, dichlorofluoroethane and cycloethylamine in the mold to obtain mixture A; 3. Add the sodium oleate solution weighed in step 1 to mixture A and mix uniformly to obtain mixture B; 4. Add to mixture B The coconut shell charcoal weighed in step 1 is stirred at a speed of 500-600...

specific Embodiment approach 2

[0013] Specific embodiment 2: The difference between this embodiment and specific embodiment 1 is that in step 1, 5.2 to 5.8 parts of polyether, 0.12 to 0.18 parts of hard foam silicone oil, and 0.082 to 0.088 parts of water are weighed according to the ratio of parts by weight. , 0.006-0.008 parts of pentamethyldiethylenetriamine, 3.8-4.2 parts of dichlorofluoroethane, 0.14-0.18 parts of cycloethylamine, 0.26-0.28 parts of oil with a concentration of 4.8-5.2 g / L Sodium acid solution, 10.2-10.8 parts of coconut shell charcoal with a particle size of 9-11 meshes and 9.8-10.5 parts of isocyanate. Other steps and parameters are the same as those in Embodiment 1.

specific Embodiment approach 3

[0014] Specific embodiment three: the difference between this embodiment and specific embodiment one is: in step one, weigh 5.6 parts of polyether, 0.16 parts of hard foam silicone oil, 0.088 parts of water, and 0.007 parts of pentagram Diethylenetriamine, 4 parts of dichlorofluoroethane, 0.16 parts of cycloethylamine, 0.27 parts of sodium oleate solution with a concentration of 5g / L, 10.5 parts of coconut shell charcoal with a particle size of 10 mesh and 10.78 parts of isocyanate. Other steps and parameters are the same as those in Embodiment 1.

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Abstract

The invention discloses a method for preparing honeycomb-like active carbon through foaming polyurethane, relating to an active carbon preparing method and solving the problems that the traditional active carbon has limited application field and low utilization ratio due to the shape limitation. The method comprises the step of: 1.weighing raw materials; 2. preparing mixture A; 3.preparing mixture B; 4. preparing mixture C; 5. preparing formed polyurethane; and 6. carrying out thermal treatment on the formed polyurethane to finally obtain the honeycomb-like active carbon. The active carbon prepared by the method has good adsorption effect and high utilization ratio and can be made into any shapes, which is beneficial to the broadening of the application field of active carbon.

Description

technical field [0001] The invention relates to a preparation method of activated carbon. Background technique [0002] Activated carbon is widely used as an adsorbent with a long history. The current main product of activated carbon is powdered carbon, and powdered activated carbon is limited by its short service life, difficult to recycle, dust pollution and other factors. Looking for a suitable activated carbon molding method It has become a research hotspot of scientists in recent years. Polyurethane foam, which is formed by polymerizing and foaming organic isocyanate and polyol compounds with various additives (catalysts, stabilizers, foaming agents, etc.), has the characteristics of low density, high specific strength, thermal and sound insulation, Shockproof, new energy consumption, flame resistance, heat resistance and simple molding process, etc., and can obtain synthetic materials with different densities and hardness by changing the formula according to needs. T...

Claims

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Application Information

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IPC IPC(8): C01B31/08B01J20/20B01J20/28B01J20/30
Inventor 刘守新陈华
Owner NORTHEAST FORESTRY UNIVERSITY
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