Polyurethane-ferrite composite flame-retardant wave-absorbing material and preparation method thereof

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

CN107868222AInactive Publication Date: 2018-04-03HENAN HAINADE NEW MATERIAL CO LTD
1 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2018-04-03
Estimated Expiration
Not applicable · inactive patent
Patent Text Reader

Abstract

The invention provides a polyurethaneferrite composite flame-retardant wave-absorbing material. The material is prepared from 100 parts by mass of polyether polyol, 20 to 70 parts by mass of toluene diisocyanate, 0.01 to 0.5 parts by mass of nanometer carbon sol, 10 to 20 parts by mass of deionized water, 5 to 30 parts by mass of dimethyl methylphosphate, 2 to 8 parts by mass of graphene oxide, 10to 20 parts by mass of ferrite, 2 to 6 parts by mass of silicon carbide, 1 to 10 parts of zinc borate, 0.02 to 0.4 parts by mass of stannous octoate, 0.03 to 0.6 parts by mass of triethylenediamine,0.2 to 3 parts by mass of an organosilicone surfactant and 1 to 10 parts by mass of sodium bicarbonate through polymerization. The polyurethane-ferrite composite flame-retardant wave-absorbing material has the characteristics of low smoke, low toxicity, flame retardancy and wide absorption frequency of absorbed waves. The invention also provides a preparation method of the polyurethane-ferrite composite flame-retardant wave-absorbing material.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention belongs to the technical field of functional materials, and in particular relates to a polyurethane ferrite composite flame-retardant 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 mate...

Examples

Embodiment 1

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

[0020] The embodiment of the present invention also provides a preparation method of the polyurethane ferrite composite flame-retardant 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, ferrite, silicon carbide, zinc borate, stannous octoate, triethylenediamine, dei...

Embodiment 2

[0028] The embodiment of the present invention provides a polyurethane ferrite composite flame-retardant 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, deionized 13 parts of water, 12 parts of dimethyl methyl phosphate, 4 parts of graphene oxide, 13 parts of ferrite, 3 parts of silicon carbide, 5 parts of zinc borate, 0.08 parts of stannous octoate, 0.12 parts of triethylenediamine, silicone 1 part of surfactant, 5 parts of sodium bicarbonate.

[0029] The embodiment of the present invention also provides a preparation method of the polyurethane ferrite composite flame-retardant 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 wav...

Embodiment 3

[0035] The embodiment of the present invention provides a polyurethane ferrite composite flame-retardant 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, 5 parts of graphene oxide, 15 parts of ferrite, 4 parts of silicon carbide, 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 polyurethane ferrite composite flame-retardant 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 freez...