Wave-absorbing polyurethane material and preparation method thereof

A wave-absorbing material, polyurethane technology, applied in chemical instruments and methods, other chemical processes, etc., can solve the problems of complex manufacturing process and large size, and achieve the effect of simple preparation process, stable electrical performance, and wide absorption frequency distribution

Inactive Publication Date: 2018-03-30
HENAN HAINADE NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the material has defects such as large size and complicated manufacturing process.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] The embodiment of the present invention provides a polyurethane wave-absorbing material, which is obtained by polymerization of the following components by mass: 100 parts of polyether polyol, 20 parts of toluene diisocyanate, 0.01 part of nano carbon sol, 10 parts of deionized water, 5 parts of dimethyl methyl phosphate, 2 parts of carboxyl multi-walled carbon nanotubes, 10 parts of ferric oxide, 1 part of zinc borate, 0.02 parts of stannous octoate, 0.03 parts of triethylenediamine, 0.2 parts of silicone surfactant , 1 part of sodium bicarbonate.

[0020] The embodiment of the present invention also provides a preparation method of the above-mentioned polyurethane wave-absorbing material, which includes the following steps:

[0021] Mixing of raw materials: the above mass parts, polyether polyol, dimethyl methyl phosphate, nano-carbon sol, ferric oxide, zinc borate, stannous octoate, triethylenediamine, deionized water, silicone surfactant Stir evenly at room tempera...

Embodiment 2

[0028] The embodiment of the present invention provides a polyurethane wave-absorbing material obtained by polymerization of the following components by mass: 100 parts of polyether polyol, 30 parts of toluene diisocyanate, 0.1 part of nano carbon sol, 13 parts of deionized water, methyl 12 parts of dimethyl phosphate, 4 parts of carboxyl multi-walled carbon nanotubes, 20 parts of ferric oxide, 5 parts of zinc borate, 0.08 parts of stannous octoate, 0.12 parts of triethylenediamine, 1 part of silicone surfactant, carbonic acid Sodium hydrogen 5 parts.

[0029] The embodiment of the present invention also provides a preparation method of the above-mentioned polyurethane wave-absorbing material, which is basically the same as the preparation method provided in Example 1, except that:

[0030] Reactive foaming: the room temperature foaming time in this step is 60 minutes;

[0031] Freeze-drying: This step includes first freezing the wave-absorbing material gel for 30 hours at a ...

Embodiment 3

[0035] The embodiment of the present invention provides a polyurethane wave-absorbing material, which is obtained by polymerization of the following components by mass: 100 parts of polyether polyol, 40 parts of toluene diisocyanate, 0.2 parts of nano carbon sol, 15 parts of deionized water, 18 parts of dimethyl methyl phosphate, 6 parts of carboxyl multi-walled carbon nanotubes, 25 parts of ferric oxide, 6 parts of zinc borate, 0.2 parts of stannous octoate, 0.3 parts of triethylenediamine, 1.6 parts of silicone surfactant , 6 parts of sodium bicarbonate.

[0036] The embodiment of the present invention also provides a preparation method of the above-mentioned polyurethane wave-absorbing material, which is basically the same as the preparation method provided in Example 1, except that:

[0037] Reactive foaming: the room temperature foaming time in this step is 60 minutes;

[0038]Freeze-drying: This step includes first freezing the wave-absorbing material gel for 40 hours a...

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PUM

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Abstract

The invention provides a polyurethane wave-absorbing material, wherein it is obtained by polymerization reaction of the following components by mass: 100 parts of polyether polyol, 20-70 parts of toluene diisocyanate, 0.01-0.5 parts of nano-carbon sol, and 10-20 parts of ionized water, 5-30 parts of dimethyl methyl phosphate, 2-10 parts of carboxy multi-walled carbon nanotubes, 10-40 parts of ferric oxide, 1-10 parts of zinc borate, 0.02- 0.4 parts, 0.03-0.6 parts of triethylenediamine, 0.2-3 parts of silicone surfactant, 1-10 parts of sodium bicarbonate. The above-mentioned polyurethane wave-absorbing material provided by the present invention has the characteristics of low smoke, low toxicity, flame retardant, wide absorption frequency distribution of absorbing waves, and the like. The present invention also provides a preparation method of the above-mentioned polyurethane wave-absorbing material.

Description

technical field [0001] The invention belongs to the technical field of functional materials, and in particular relates to a polyurethane wave-absorbing material and a preparation method thereof. Background technique [0002] Absorbing materials refer to materials that can absorb most of the electromagnetic waves projected on its surface and convert them into other forms of energy with almost no reflection. With the development of modern science and technology, the impact of electromagnetic radiation on the environment is increasing. At the airport, flights are delayed due to electromagnetic wave interference; in hospitals, mobile phones often interfere with the normal work of various electronic medical instruments. In addition, electromagnetic radiation causes direct and indirect damage to the human body through thermal effects, non-thermal effects, and cumulative effects. Therefore, controlling electromagnetic pollution and finding a material that can resist and weaken el...

Claims

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Application Information

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IPC IPC(8): C08G18/48C08K13/04C08K5/521C08K3/38C08K3/04C08K7/24C08K3/22C08J9/08C08J9/28C09K3/00
CPCC08G18/48C08G2101/00C08J9/08C08J9/28C08J2201/0484C08J2203/02C08J2375/08C08K3/04C08K3/22C08K3/38C08K5/521C08K7/24C08K13/04C08K2003/2275C08K2003/387C08K2201/001C08K2201/011C09K3/00
Inventor 王莉温毓敏
Owner HENAN HAINADE NEW MATERIAL CO LTD
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