阅读说明：本技术 一种金属纤维毡及其制备方法 (Metal fiber felt and preparation method thereof ) 是由 何志能 夏祥华 于 2019-09-05 设计创作，主要内容包括：本发明公开一种金属纤维毡的制备方法。所述金属纤维毡的制备方法包括如下步骤：先将金属纤维铺成蓬松的未粘接原始毡垫,再对其进行电镀包覆粘结,制备出粘接成型的金属纤维毡。通过本方法可制备各种金属纤维毡制品。金属纤维毡的此种制备方法不需高温环境,采用了现有的不织布铺网技术和成熟的电镀配方,可迅速形成规模产能,所需成本低,克服了现有技术高温环境的影响,可制作更加耐温的材料。(The invention discloses a preparation method of a metal fiber felt. The preparation method of the metal fiber felt comprises the following steps: firstly, the metal fiber is paved into a fluffy unbonded original felt mat, and then the fluffy unbonded original felt mat is electroplated, coated and bonded to prepare a bonded metal fiber felt. Various metal fiber felts can be prepared by the process. The preparation method of the metal fiber felt does not need a high-temperature environment, adopts the prior non-woven fabric lapping technology and a mature electroplating formula, can quickly form large-scale productivity, has low required cost, overcomes the influence of the high-temperature environment of the prior art, and can be used for preparing a more temperature-resistant material.)

1. The preparation method of the metal fiber felt is characterized by comprising the following steps of: firstly, the metal fiber is paved into a fluffy unbonded original felt mat, and then the fluffy unbonded original felt mat is electroplated, coated and bonded to prepare a bonded metal fiber felt.

2. The preparation method according to claim 1, characterized in that the preparation method comprises the following steps:

(1) Firstly, uniformly paving metal fibers into a fluffy felt belt net, and then compacting the metal fiber fluffy felt belt net to a certain thickness;

(2) after the step (1) is finished, carrying out electroplating, coating and bonding on the felt belt, and washing and drying after electroplating is finished;

the metal fiber is at least one selected from stainless steel fiber, gold fiber and nickel fiber.

3. The method according to claim 2, wherein in the step (1), the fluffy felt web is formed by a non-woven fabric lapping method.

4. The method as claimed in claim 2, wherein in the step (1), the thickness of the fluffy felt before the compaction is 20 to 300 μm, and the thickness of the fluffy felt after the compaction is 1 to 10 μm.

5. The method according to claim 2, wherein in the step (2), the time for the plating cladding adhesion is 2 to 6 hours.

6. the manufacturing method according to claim 2, wherein in the step (2), before the electroplating coating bonding, the felt belt is degreased;

Optionally, the degreased felt strip is water washed prior to plating the cladding bond.

7. The production method according to claim 2, wherein in the step (2), the plating coat is bonded at least once.

8. the preparation method according to claim 2, wherein in the step (2), the drying temperature is 50-80 ℃ and the drying time is 2-5 h.

9. The method according to claim 2, wherein the range of the plating metal in the step (2) includes various high temperature resistant metals and alloys, preferably aluminum, nickel or nickel tungsten alloy.

Technical Field

The invention belongs to the technical field of electroplating, and particularly relates to a metal fiber felt and a preparation method thereof.

Background

Since the 21 st century, with the rapid development of industry, the treatment of atmospheric environmental pollution becomes a new challenge for national economy development in China. The reduction of smoke dust emission of power plants, automobiles and the like becomes a current urgent priority in China. The metal fiber felt has a three-dimensional ultrafine pore structure and is composed of more than two layers of fiber structures, so that the metal fiber felt has more than two layers of filtering capacity. As the metal fiber felt is formed by bonding the slender metal fibers together by a plurality of bonding points, the material has no medium transfer and has the advantages of high strength, excellent air permeability and small flow resistance. At present, the metal fiber felt is mostly made by adopting a sintering mode, the higher the temperature resistant metal fiber is, the higher the making difficulty is, and the use part with higher environmental temperature is still restricted. Therefore, it is necessary to develop a metal fiber felt which is temperature resistant and highly efficient.

Disclosure of Invention

The invention provides a metal fiber felt and a preparation method thereof, aiming at the defect of preparing the metal fiber felt by adopting a sintering method in the prior art.

The preparation method of the metal fiber felt comprises the following steps: firstly, the metal fiber is paved into a fluffy unbonded original felt mat, and then the fluffy unbonded original felt mat is electroplated, coated and bonded to prepare a bonded metal fiber felt.

according to the technical scheme of the invention, the preparation method specifically comprises the following steps:

(1) firstly, uniformly paving metal fibers into a fluffy felt belt net, and then compacting the metal fiber fluffy felt belt net to a certain thickness;

(2) and (3) after the step (1) is finished, electroplating, coating and bonding the felt belt, and washing and drying after electroplating.

Wherein, in the step (1), the metal fiber may be at least one selected from stainless steel fiber, gold fiber, nickel fiber, and the like.

In the step (1), the fluffy felt belt net can be obtained by paving a non-woven fabric in the prior art.

Wherein, in step (1), the thickness of the fluffy felt belt before compaction can be 20-300 μm, such as 40-200 μm.

Wherein, in the step (1), the thickness of the fluffy felt belt after compaction can be 1-10 μm, such as 2-6 μm.

Wherein, in the step (2), the time for electroplating, coating and bonding is 2-6 hours, such as 3-5 hours. Electroplating operations are known in the art.

In the step (2), before the electroplating coating bonding, the felt belt may be degreased, for example, by using dilute acid to clean and degrease. Further, optionally, the degreased felt may be washed with water before the plating coat is bonded. If the plasma degreasing cleaning is adopted, the water washing is not needed.

In the step (2), the number of times of the electroplating coating adhesion is at least one, for example, two, three or more times.

wherein, in the step (2), the drying temperature is 50-80 ℃ and the drying time is 2-5 h.

in step (2), the range of the electroplating metal includes various metals and alloys that can be electroplated and resist high temperature, such as at least one of copper, aluminum, nickel, tungsten, etc., preferably aluminum, nickel or nickel-tungsten alloy. For example, a plating solution for electroplating nickel may include: 150mg/L of sodium hydroxide 130-.

Further, the invention also provides the metal fiber felt prepared by the method.

The invention has the beneficial effects that:

Various metal fiber felts can be prepared by the process. The preparation method of the metal fiber felt does not need a high-temperature environment, adopts the prior non-woven fabric lapping technology and a mature electroplating formula, can quickly form large-scale productivity, has low required cost, overcomes the influence of the high-temperature environment of the prior art, and can be used for preparing a more temperature-resistant material.

(1) The high-temperature resistant metal fiber felt can be made by plating heat-resistant metals such as high-temperature resistant alloy and the like and alloys;

(2) The manufacturing process does not need a high-temperature process, saves energy and reduces carbon emission.

(3) a dense laminate structure can be made.

Detailed Description

The examples herein are provided to provide a further understanding of the invention and are incorporated in and constitute a part of this application and are not to be construed as unduly limiting the invention.