阅读说明：本技术 一种柔性玻璃纤维蜂窝体的制备方法 (Preparation method of flexible glass fiber honeycomb body ) 是由 李云涛 荣卫龙 张舒乐 郑润 刘义丹 刘洋 于 2021-07-20 设计创作，主要内容包括：本发明公开了一种柔性玻璃纤维蜂窝体的制备方法,具体包括以下步骤：(1)先将玻璃纤维毡浸入成型液中,然后干燥,最后加入瓦楞机成型,得到波纹式玻璃纤维毡；(2)先将玻璃纤维毡和波纹式玻璃纤维毡交替叠加,然后浸入粘结剂中,最后干燥,得到玻璃纤维蜂窝体；(3)先将玻璃纤维蜂窝体沿孔道方向切成玻璃纤维蜂窝体薄板,然后加热,最后弯曲成任意形状,冷却固定,即得。本发明采用可塑性粘结剂组装玻璃纤维蜂窝体,实现了蜂窝体受热变形、冷却定形,并可多次重复,具有柔性特征。(The invention discloses a preparation method of a flexible glass fiber honeycomb body, which specifically comprises the following steps: (1) firstly, immersing a glass fiber felt into a forming liquid, then drying, and finally adding a corrugating machine for forming to obtain a corrugated glass fiber felt; (2) alternately superposing a glass fiber felt and a corrugated glass fiber felt, then immersing the glass fiber felt and the corrugated glass fiber felt into a binder, and finally drying to obtain a glass fiber honeycomb body; (3) firstly, cutting the glass fiber honeycomb body into glass fiber honeycomb body sheets along the channel direction, then heating, finally bending into any shape, cooling and fixing to obtain the glass fiber honeycomb body. The invention adopts the plastic binder to assemble the glass fiber honeycomb body, realizes the heating deformation and cooling setting of the honeycomb body, can be repeated for many times and has the characteristic of flexibility.)

1. The preparation method of the flexible glass fiber honeycomb body is characterized by comprising the following steps:

(1) glass fiber mat corrugation forming

Firstly, immersing a glass fiber felt into a forming liquid, then drying, and finally adding a corrugating machine for forming to obtain a corrugated glass fiber felt;

(2) glass fibre honeycomb body assembling formation

Alternately superposing a glass fiber felt and a corrugated glass fiber felt, then immersing the glass fiber felt and the corrugated glass fiber felt into a plastic binder, and finally drying to obtain a glass fiber honeycomb body;

(3) flexible glass fiber honeycomb body thermoforming

Firstly cutting the glass fiber honeycomb body into glass fiber honeycomb body sheets along the channel direction, then heating, finally bending into any shape, cooling and fixing to obtain the flexible glass fiber honeycomb body.

2. The method of claim 1, wherein in step (1), the forming liquid comprises 0.5-5% by mass of a water-soluble polyester plasticizer and the balance of water.

3. The method of claim 1, wherein in step (2), the plastic binder comprises 30-50% by mass of a water-soluble thermoplastic polyurethane binder, 5-15% by mass of a water-soluble polyester plasticizer, 1-3% by mass of a silane coupling agent, and the balance water.

4. The method of claim 1, wherein the drying in step (1) is performed under the following conditions: drying at 100-140 deg.C for 1-4 min;

in the step (2), the drying operation conditions are as follows: drying at 50-70 deg.C for 12-24 hr, and drying at 100-120 deg.C for 4-8 hr.

5. The method of claim 1, wherein in step (3), the glass fiber honeycomb sheet has a thickness of 5 to 30 mm.

6. The method of claim 1, wherein the heating in step (3) is at a temperature of from 90 ℃ to 120 ℃.

7. The method of claim 1, wherein in step (3), the arbitrary shape is a cylinder, an oval cylinder, an irregular cylinder, an arc, or a wave.

Technical Field

The invention relates to the technical field of environment-friendly materials, in particular to a preparation method of a flexible glass fiber honeycomb body.

Background

Along with the improvement of the air quality requirement, the control objects of the pollution components in the air are increasing. For example, indoor air extends from fine particulate control to odor control, industrial waste gas extends from single pollutant control to multi-pollutant cooperative control, and so on.

Currently, researchers are working on how to add CO to existing cartridges in cartridge air purifiers₂The control module also has researchers in researching how to realize dust removal and denitration integration of the industrial filter drum type dust remover. One of the key issues that needs to be addressed in the application of these studies is the development of a module that can be combined with a filter cartridge to allow gas to pass through the module after passing through the existing filter cartridge. Thus, this module should be a closed-shaped material, such as a cylinder or an irregular cylinder, i.e. the material should have bendable properties.

The existing common filter cylinder is made of paper, polyester, film and pleated materials, and is characterized by small pores so as to intercept particles and have larger resistance to gas. After the gas passes through the filter cartridge made of these materials, the particles are cleaned, and if the gas is cleaned by using these materials as a substrate, the resistance is increased sharply. Accordingly, there is a need to provide a low resistance gas purification material for use with existing filter cartridges.

In gas purification, honeycomb materials are widely used because they are porous, and have a place to contact with gas and reduce resistance to gas, such as coal-fired flue gas denitration, gas flue gas denitration, adsorption of VOCs (honeycomb activated carbon or honeycomb molecular sieve), and automobile exhaust gas purification (honeycomb ceramics). These honeycomb materials are manufactured in two ways, one being extruder extruded, material-bound, and generally rigid; the other is corrugated (obtained by alternately stacking and bonding corrugated materials and flat materials), and is obtained by bonding, and flexible and bendable can be realized by changing the manufacturing process and the formula.

Accordingly, there is a need in the art for a method of making a corrugated honeycomb that provides a flexible glass fiber honeycomb that provides improved environmental support.

Disclosure of Invention

In view of the above, the present invention provides a method for preparing a flexible glass fiber honeycomb body, and a corrugated glass fiber honeycomb body capable of being bent freely and flexibly is developed by changing a formula and a preparation process, which is helpful for improving our environment and improving our technical level in this respect.

In order to achieve the purpose, the invention adopts the following technical scheme:

a method for preparing a flexible glass fiber honeycomb body, comprising the following steps:

(1) glass fiber mat corrugation forming

Firstly, immersing a glass fiber felt into a forming liquid, then drying, and finally adding a corrugating machine for forming to obtain a corrugated glass fiber felt;

(2) glass fibre honeycomb body assembling formation

Alternately superposing a glass fiber felt and a corrugated glass fiber felt, then immersing the glass fiber felt and the corrugated glass fiber felt into a plastic binder, and finally drying to obtain a glass fiber honeycomb body;

(3) flexible glass fiber honeycomb body thermoforming

Firstly cutting the glass fiber honeycomb body into glass fiber honeycomb body sheets along the channel direction, then heating, finally bending into any shape, cooling and fixing to obtain the flexible glass fiber honeycomb body.

The invention has the beneficial effects that the plastic binder is adopted to assemble the glass fiber honeycomb body, so that the honeycomb body is deformed by heating, cooled and shaped, can be repeated for many times and has the characteristic of flexibility.

Further, in the step (1), the molding liquid comprises, by mass, 0.5% -5% of a water-soluble polyester plasticizer and the balance of water.

The molding liquid selected by the invention has little volatility and little influence on the environment because only the water-soluble polyester plasticizer (with high boiling point) has little volatility.

Further, in the step (1), the drying conditions are as follows: drying at 100-140 deg.C for 1-4 min.

Adopt above-mentioned further technical scheme's beneficial effect to lie in, through the drying, can adjust the humidity of glass fiber mat to the shaping.

Further, in the step (2), the plastic binder comprises, by mass, 30% -50% of a water-soluble thermoplastic polyurethane binder, 5% -15% of a water-soluble polyester plasticizer, 1% -3% of a silane coupling agent, and the balance of water.

The plastic binder has the beneficial effects that in the plastic binder, the water-soluble thermoplastic polyurethane binder is used as a base adhesive, the water-soluble polyester plasticizer is used as an auxiliary agent, and the silane coupling agent is used as a glass fiber protective agent and improves the binding power. The plastic binder selected by the invention takes water as a solvent, the water-soluble thermoplastic polyurethane binder and the water-soluble polyester plasticizer have low volatility, the dosage of the silane coupling agent is small, and the influence on the environment is obviously reduced.

Further, in the step (2), the drying conditions are as follows: drying at 50-70 deg.C for 12-24 hr, and drying at 100-120 deg.C for 4-8 hr.

The further technical scheme has the beneficial effects that the dispersion speed of the water inside and outside the glass fiber honeycomb body is uniform through sectional drying, and cracking caused by overlarge difference of the internal humidity and the external humidity is avoided.

Further, in the step (3), the thickness of the glass fiber honeycomb sheet is 5 to 30 mm.

The further technical scheme has the advantages that the thickness selected by the invention can ensure that the subsequent deformation degree is larger, and the deformation is easy to operate.

Further, in the step (3), the heating temperature is 90 to 120 ℃.

The further technical scheme has the beneficial effect that the temperature selected by the invention can enable the plastic adhesive to have flexibility and operability.

Further, in the step (3), the arbitrary shape is a cylindrical shape, an elliptic cylindrical shape, an irregular cylindrical shape, an arc shape, or a wavy shape. In particular, when the tube is rolled into a closed cylindrical shape, an elliptical cylindrical shape, or an irregular cylindrical shape, it is necessary to coat a plastic adhesive on the interface portion and dry it.

According to the technical scheme, compared with the prior art, the invention has the following beneficial effects:

1. the environment-friendly forming liquid and the environment-friendly plastic binder are adopted, which is beneficial to improving the environment;

2. the plastic modification is carried out on the glass fiber honeycomb material to prepare the flexible glass fiber honeycomb material which is deformed by heating, cooled and shaped and can be repeatedly operated.

Drawings

FIG. 1 is a schematic structural view of a cylindrical flexible glass fiber honeycomb body made in accordance with example 1;

FIG. 2 is a schematic representation of the use of the cylindrical flexible glass fiber honeycomb of example 1 with other filter cartridges or filter bag nests;

FIG. 3 is a schematic structural view of an oval cylindrical flexible glass fiber honeycomb produced in example 2;

FIG. 4 is a schematic structural view of an irregular cylindrical flexible glass fiber honeycomb produced in example 3;

FIG. 5 is a schematic structural view of a curved flexible glass fiber honeycomb made in accordance with example 4;

FIG. 6 is a schematic structural view of a corrugated flexible glass fiber honeycomb produced in example 5.

Detailed Description

The technical solutions in the embodiments of the present invention are clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the following examples, references are made to the preparation of water-soluble polyester plasticizers: "water-soluble polyester plasticizer for sizing agent and adhesive agent", glass fiber, Yufeng, 2009,2:1-4, 8.

Example 1

The preparation method of the flexible glass fiber honeycomb body specifically comprises the following steps:

(1) glass fiber mat corrugation forming

Firstly, immersing a glass fiber felt into a forming liquid, then drying for 1min at 100 ℃, and finally adding into a corrugating machine for forming to obtain a corrugated glass fiber felt;

wherein, the molding liquid comprises 0.5 percent of water-soluble polyester plasticizer and the balance of water by mass percentage;

(2) glass fibre honeycomb body assembling formation

Alternately superposing a glass fiber felt and a corrugated glass fiber felt, then immersing the glass fiber felt into a plastic binder, and finally drying the glass fiber felt at 50 ℃ for 12 hours and then drying the glass fiber felt at 100 ℃ for 4 hours to obtain a glass fiber honeycomb body;

wherein, the plastic binder comprises 30 percent of water-soluble thermoplastic polyurethane binder (Dolphin-1371 aqueous polyurethane resin of Guangzhou Dolphin new material Co., Ltd.), 10 percent of water-soluble polyester plasticizer, KH5603 percent of silane coupling agent and the balance of water by mass percentage;

(3) flexible glass fiber honeycomb body thermoforming

Firstly, cutting a glass fiber honeycomb body into a glass fiber honeycomb body thin plate with the thickness of 5mm along the direction of a pore channel, then heating to 90 ℃, taking out, quickly bending according to an expected shape, rolling into a cylinder shape, and naturally fixing the shape after cooling; and (3) coating the plastic binder in the step (2) on the interface part of the cylindrical flexible glass fiber honeycomb body, and drying according to the drying process in the step (2) to obtain the closed cylindrical flexible glass fiber honeycomb body (as shown in figure 1).

In addition, the cylindrical flexible glass fiber honeycomb body can be nested with other filter elements or filter bags for use (as shown in figure 2).

Example 2

The preparation method of the flexible glass fiber honeycomb body specifically comprises the following steps:

(1) glass fiber mat corrugation forming

Firstly, immersing a glass fiber felt into a forming liquid, then drying for 4min at 100 ℃, and finally adding into a corrugating machine for forming to obtain a corrugated glass fiber felt;

wherein, the molding liquid comprises 5 percent of water-soluble polyester plasticizer and the balance of water by mass percent;

(2) glass fibre honeycomb body assembling formation

Alternately superposing a glass fiber felt and a corrugated glass fiber felt, then immersing the glass fiber felt into a plastic binder, and finally drying the glass fiber felt at 50 ℃ for 24 hours and then drying the glass fiber felt at 100 ℃ for 8 hours to obtain a glass fiber honeycomb body;

wherein, the plastic binder comprises 50 percent of water-soluble thermoplastic polyurethane binder (Dolphin-1371 aqueous polyurethane resin of Guangzhou Dolphin new material Co., Ltd.), 5 percent of water-soluble polyester plasticizer, KH5601 percent of silane coupling agent and the balance of water in percentage by mass;

(3) flexible glass fiber honeycomb body thermoforming

Firstly, cutting a glass fiber honeycomb body into a glass fiber honeycomb body thin plate with the thickness of 30mm along the direction of a pore channel, then heating to 100 ℃, taking out, quickly bending according to an expected shape, rolling into an elliptic cylinder shape, and naturally fixing the shape after cooling; and (3) coating the plastic binder in the step (2) on the interface part of the oval cylindrical flexible glass fiber honeycomb body, and drying according to the drying process in the step (2) to obtain the closed oval cylindrical flexible glass fiber honeycomb body (as shown in figure 3).

Example 3

The preparation method of the flexible glass fiber honeycomb body specifically comprises the following steps:

(1) glass fiber mat corrugation forming

Firstly, immersing a glass fiber felt into a forming liquid, then drying for 2min at 120 ℃, and finally adding into a corrugating machine for forming to obtain a corrugated glass fiber felt;

wherein, the molding liquid comprises 2 percent of water-soluble polyester plasticizer and the balance of water by mass percent;

(2) glass fibre honeycomb body assembling formation

Alternately superposing a glass fiber felt and a corrugated glass fiber felt, then soaking the glass fiber felt and the corrugated glass fiber felt into a plastic binder, and finally drying the glass fiber felt and the corrugated glass fiber felt at 60 ℃ for 18 hours and at 110 ℃ for 6 hours to obtain a glass fiber honeycomb body;

wherein, the plastic binder comprises 40 percent of water-soluble thermoplastic polyurethane binder (Dolphin-1371 aqueous polyurethane resin of Guangzhou Dolphin new material Co., Ltd.), 15 percent of water-soluble polyester plasticizer, KH5602 percent of silane coupling agent and the balance of water by mass percentage;

(3) flexible glass fiber honeycomb body thermoforming

Firstly, cutting a glass fiber honeycomb body into a glass fiber honeycomb body thin plate with the thickness of 10mm along the direction of a pore channel, then heating to 110 ℃, taking out, quickly bending according to an expected shape, rolling into an irregular cylinder shape, and naturally fixing the shape after cooling; and (3) coating the plastic binder in the step (2) on the interface part of the irregular cylindrical flexible glass fiber honeycomb body, and drying according to the drying process in the step (2) to obtain the closed irregular cylindrical flexible glass fiber honeycomb body (as shown in figure 4, any cylindrical shape different from the cylindrical shape in figure 1 and the elliptical shape in figure 3 can be classified into an irregular cylindrical shape).

Example 4

The preparation method of the flexible glass fiber honeycomb body specifically comprises the following steps:

(1) glass fiber mat corrugation forming

Firstly, immersing a glass fiber felt into a forming liquid, then drying for 1min at 140 ℃, and finally adding into a corrugating machine for forming to obtain a corrugated glass fiber felt;

wherein, the molding liquid comprises 3 percent of water-soluble polyester plasticizer and the balance of water by mass percentage;

(2) glass fibre honeycomb body assembling formation

Alternately superposing a glass fiber felt and a corrugated glass fiber felt, then soaking the glass fiber felt and the corrugated glass fiber felt into a plastic binder, and finally drying the glass fiber felt and the corrugated glass fiber felt at 70 ℃ for 12 hours and 100 ℃ for 4 hours to obtain a glass fiber honeycomb body;

wherein, the plastic binder comprises 30 percent of water-soluble thermoplastic polyurethane binder (aqueous polyurethane resin of Anhui femtosecond chemical Co., Ltd.), 15 percent of water-soluble polyester plasticizer, KH5702 percent of silane coupling agent and the balance of water by mass percent;

(3) flexible glass fiber honeycomb body thermoforming

Firstly, cutting a glass fiber honeycomb body into a glass fiber honeycomb body thin plate with the thickness of 20mm along the pore channel direction, then heating to 115 ℃, taking out, quickly bending according to an expected shape, rolling into an arc shape (0 degrees < central angle <360 degrees), and naturally fixing the shape after cooling to obtain the arc-shaped flexible glass fiber honeycomb body (as shown in figure 5).

Example 5

The preparation method of the flexible glass fiber honeycomb body specifically comprises the following steps:

(1) glass fiber mat corrugation forming

Firstly, immersing a glass fiber felt into a forming liquid, then drying for 4min at 140 ℃, and finally adding into a corrugating machine for forming to obtain a corrugated glass fiber felt;

wherein, the molding liquid comprises 1 percent of water-soluble polyester plasticizer and the balance of water by mass percent;

(2) glass fibre honeycomb body assembling formation

Alternately superposing a glass fiber felt and a corrugated glass fiber felt, then soaking the glass fiber felt and the corrugated glass fiber felt into a plastic binder, and finally drying the glass fiber felt and the corrugated glass fiber felt at 70 ℃ for 24 hours and at 120 ℃ for 8 hours to obtain a glass fiber honeycomb body;

wherein, the plastic binder comprises 45 percent of water-soluble thermoplastic polyurethane binder (aqueous polyurethane resin of Anhui femtosecond chemical Co., Ltd.), 8 percent of water-soluble polyester plasticizer, KH5701 percent of silane coupling agent and the balance of water by mass percent;

(3) flexible glass fiber honeycomb body thermoforming

Firstly, cutting the glass fiber honeycomb body into a glass fiber honeycomb body thin plate with the thickness of 15mm along the channel direction, then heating to 120 ℃, taking out and quickly bending according to the expected shape to prepare into a wave shape, and naturally fixing the shape after cooling to obtain the wave-shaped glass fiber honeycomb body (as shown in figure 6).

Performance testing

After the flexible glass fiber honeycomb bodies prepared in the examples 1 to 5 are heated at 105 ℃ again, the flexible glass fiber honeycomb bodies can realize any deformation at the temperature, can be naturally shaped after being taken out and cooled by artificial fixed shapes, and can be repeated for any times without damaging the mechanical structure of the glass fiber honeycomb bodies.

The tests show that the invention adopts the plastic binder to assemble the glass fiber honeycomb body, realizes the deformation of the honeycomb body by heating and the cooling and shaping, can be repeated for many times and has the flexible characteristic.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.