A kind of preparation method of glass fiber cotton with wave-absorbing characteristic
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A technology of glass fiber wool and glass fiber, applied in the field of glass fiber wool preparation, can solve the problems of limited application field, low product toughness, complicated operation, etc. Effect
Active Publication Date: 2017-11-03
SUZHOU HONGJIU AVIATION THERMAL MATERIALS TECH CO LTD
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Problems solved by technology
Both of the above two methods adopt the curing method, which is complicated to operate, high in cost, and the toughness of the obtained product is not high. For glass fiber, curing will greatly affect its thermal insulation performance and limit its application field
Method used
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Embodiment 1
[0019] A kind of preparation method with the glass fiber wool of wave-absorbing characteristic, it is characterized in that comprising the following steps:
[0020] (1) preparation length is 3mm, and the glass fiber that diameter is 1 μm;
[0021] (2) Soak the glass fiber with a sulfuric acid solution with a concentration of 2mol / L, so that defects appear on the surface. The soaking time is 2 days. After soaking, take out the fiber and clean it and dry it;
[0022] (3) The wave-absorbing materials nickel ferrite, zinc ferrite, and manganese ferrite are formulated into nano-slurries with a solid content of 2% and a solid particle size of 10nm, and put them into the slurry tank, and put glass fibers into the nano-slurries After soaking in the pool for 1 day, take it out, dry and pyrolyze it at 100°C, and then you can make glass fiber wool with wave-absorbing properties.
[0023] Wherein, the nano slurry is an aqueous solution of ferrous sulfate and ferric sulfate, and the conce...
Embodiment 2
[0025] A kind of preparation method with the glass fiber wool of wave-absorbing characteristic, it is characterized in that comprising the following steps:
[0026] (1) preparation length is 8mm, and the glass fiber that diameter is 6 μm;
[0027] (2) Soak the glass fibers with a hydrofluoric acid solution of 5mol / L to make the surface defective. The soaking time is 5 days. After soaking, take out the fiber and clean it and dry it;
[0028] (3) The wave-absorbing materials nickel ferrite, zinc ferrite, and manganese ferrite are prepared into nano-slurries with a solid content of 20% and a solid particle size of 100nm, and put them into the slurry tank, and put the glass fibers into the nano-slurries After soaking in the pool for 2 days, take it out, dry and pyrolyze it at 600°C, and then make glass fiber wool with wave-absorbing properties.
[0029] Wherein, the nano slurry is an aqueous solution of ferrous sulfate and ferric sulfate, and the concentration of the sulfate is 6...
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Abstract
The invention discloses a method for preparing glass fiber wool with wave-absorbing properties, which is characterized by comprising the following steps: (1) preparing glass fiber. (2) Soak the fiber with acid to make its surface defective. (3) Prepare nano-slurry, put the glass fiber into the nano-slurry tank and soak. The acid is sulfuric acid or hydrofluoric acid with a concentration of 2 to 5 mol / L; the absorbing material is one or more of nickel ferrite, zinc ferrite, and manganese ferrite, with a particle size of 10 ~100nm; the nano slurry is an aqueous solution of ferrous sulfate and ferric sulfate, the sulfate concentration is 20-60%, and the solid content is 2-20%; the pyrolysis temperature is 100-600°C. In this method, the acid is used to corrode the fiber, and the specific surface area of the fiber becomes larger continuously, and the contact area with the wave-absorbing material is also large, and the wave-absorbing material is randomly distributed in the fiber defects, and the combination with the fiber is relatively firm. In addition, the method is simple to operate, low in cost, and the prepared product has excellent wave-absorbing characteristics, and can solve the problem of electromagnetic radiation when applied to household appliances and other fields.
Description
technical field [0001] The invention relates to a method for preparing glass fiber wool, in particular to a method for preparing glass fiber wool with wave-absorbing properties. Background technique [0002] Glass fiber cotton is a fibrous lightweight material with excellent properties such as good insulation, low thermal conductivity, good thermal shock resistance, and high mechanical strength. It is widely used in construction, home appliances, missiles, military industry, aerospace, transportation, etc. Transportation, sports equipment and other fields. However, with the development of modern science and technology, the impact of electromagnetic radiation on the environment is increasing day by day. At airports, aircraft flights are delayed due to electromagnetic interference; in hospitals, mobile phones often interfere with the normal work of various electronic diagnostic and treatment instruments; In fact, the reflection of electromagnetic waves by tall buildings will ...
Claims
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Application Information
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Patent Type & Authority Patents(China)
IPC IPC(8): C03C25/42C03C25/68
Inventor 陈照峰沙李丽
Owner SUZHOU HONGJIU AVIATION THERMAL MATERIALS TECH CO LTD
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