WO2024026930A1

WO2024026930A1 - Fiber composite material, and preparation method therefor and use thereof

Info

Publication number: WO2024026930A1
Application number: PCT/CN2022/112887
Authority: WO
Inventors: 李鑫; 冯大利; 周宇
Original assignee: 深圳麦克韦尔科技有限公司
Priority date: 2022-08-03
Filing date: 2022-08-16
Publication date: 2024-02-08

Abstract

A fiber composite material, and a preparation method therefor and the use thereof. The fiber composite material comprises a heat-resistant layer and a liquid guide layer, which are arranged in a stacked manner, wherein the material of the heat-resistant layer comprises heat-resistant fibers and hydrophilic fibers, and the material of the liquid guide layer comprises hydrophilic fibers, the heat-resistant fibers comprising polyimide fibers, and the hydrophilic fibers comprising tencel fibers. In the fiber composite material, specific polyimide fibers and tencel fibers are provided in the heat-resistant layer and used in conjunction with the tencel fibers in the liquid guide layer, such that the oil guide property of the composite material can be greatly improved; in addition, the resulting composite material also has the oil storage and oil locking properties similar to or even better than those of the existing oil guide material.

Description

Fiber composite material and preparation method and application thereof

Technical field

This application relates to the technical field of electronic cigarette oil-conducting materials, and specifically relates to a fiber composite material and its preparation method and application.

Background technique

The aerosol generating device of the atomizing core material commonly used in e-cigarettes currently on the market mainly consists of an atomizing core and an e-liquid tank, of which the atomizing core is the core part of the aerosol generating device. The atomization core is composed of a porous material and a heating element. The porous material plays the role of supplying e-liquid to the heating element, which is important for the e-cigarette's smoke volume, smoke particle size, spice and nicotine transmission efficiency and other properties. Influence. There are currently two main types of oil-conducting materials used in atomizer cores: one is cotton core represented by natural cotton and synthetic fibers, and the other is porous oil-conducting ceramics. Although porous oil-conducting ceramics have excellent heat resistance, However, the oil conduction rate is limited, so cotton core is still the mainstream oil conduction material. In the existing technology, cotton fiber, flax fiber, non-woven fabric and other materials are used to obtain a composite material through the spunlace process. Although the above-mentioned materials can achieve better oil locking and oil storage properties in practical applications, the oil conductivity still remains It cannot meet actual needs. Therefore, it is necessary to develop a fiber composite material with high oil conductivity.

Contents of the invention

The purpose of this application is to overcome the shortcomings of existing fiber composite materials with limited oil conductivity and inability to effectively meet actual needs, and to provide a fiber composite material and its preparation method and application.

In order to achieve the above purpose, this application adopts the following technical solutions:

A fiber composite material, the fiber composite material includes a heat-resistant layer and a liquid-conducting layer arranged in a stack;

The material of the heat-resistant layer includes heat-resistant fiber and hydrophilic fiber, the material of the liquid-conducting layer includes hydrophilic fiber, the heat-resistant fiber includes polyimide fiber, and the hydrophilic fiber includes Tencel fiber. It can be understood that the material of the heat-resistant layer includes polyimide fiber and Tencel fiber, and the material of the liquid-conducting layer includes Tencel fiber.

Optionally, based on the total weight of the heat-resistant layer material, the weight proportion of heat-resistant fibers is 20%-80%, and the weight proportion of hydrophilic fibers is 20%-80%.

Optionally, the heat-resistant fiber also includes polyphenylene sulfide fiber, aramid fiber, polytetrafluoroethylene fiber, carbon fiber, metal fiber, poly-p-phenylene benzobisoxazole fiber (PBO), polymethylene fiber. At least one of phenylbenzodiimidazole fibers (PBI);

The hydrophilic fiber also includes at least one of cotton fiber, flax fiber, hemp fiber, modal fiber, cupro fiber, bamboo fiber, seaweed fiber, chitosan fiber, and carboxymethyl cellulose fiber. When the heat-resistant fiber also includes polyphenylene sulfide fiber, aramid fiber, polytetrafluoroethylene fiber, carbon fiber, metal fiber, polyparaphenylenebenzobisoxazole fiber (PBO), polym-phenylenebenzobis When at least one of imidazole fiber (PBI) is used, this application does not specifically limit the ratio between polyimide fiber and the above materials. Optional, the mass ratio between the two can be (1-10) :1. When the hydrophilic fiber also includes at least one of cotton fiber, flax fiber, hemp fiber, modal fiber, cupro fiber, bamboo fiber, seaweed fiber, chitosan fiber, and carboxymethyl cellulose fiber, this application does not apply The ratio between Tencel fiber and the above materials is specifically limited. Optional, the mass ratio between the two can be (1-10):1.

Optionally, the material of the heat-resistant layer and/or liquid-conducting layer also includes high-resilience fibers. Optionally, the high-resilience fibers include hollow polyester fibers. Further optionally, the hollow polyester fibers It is three-dimensional curled hollow polyester fiber.

The heat-resistant fibers, hydrophilic fibers and high-resilience fibers mentioned above in this application are all existing conventional fiber materials and are commercially available. For example, polyimide fiber, abbreviated as PI fiber, also known as aramid fiber, is a commonly available fiber material in this field.

Optional, based on the total weight of the heat-resistant layer material, the weight proportion of heat-resistant fibers is 19.9%-80%, the weight proportion of hydrophilic fibers is 19.9%-80%, and the weight proportion of high-resilience fibers is Ratio is 0.1%-20%;

Based on the total weight of the liquid-conducting layer material, the weight proportion of hydrophilic fibers is 50%-99.9%, and the weight proportion of high-resilience fibers is 0.1%-50%.

Optionally, based on the total weight of the heat-resistant layer material, the weight proportion of heat-resistant fiber is 20%-60%, the weight proportion of hydrophilic fiber is 20%-60%, and the weight proportion of high-resilience fiber is 20%-60%. Based on the total weight of the liquid-conducting layer material, the weight proportion of hydrophilic fibers is 80%-90%, and the weight proportion of high-resilience fibers is 10%-20%. By controlling the amount of high resilience fiber and the amount of heat-resistant fiber and hydrophilic fiber, this application can ensure that the composite material can improve the oil conductivity while improving the material's oil storage and oil locking properties.

Optionally, the heat-resistant layer has a porosity of 70%-98%, and the liquid-conducting layer has a porosity of 50%-82%.

Optionally, the thickness of the heat-resistant layer accounts for 30%-60% of the total thickness of the heat-resistant layer and the liquid-conducting layer;

The weight of the heat-resistant layer accounts for 30%-60% of the total weight of the heat-resistant layer and the liquid conductive layer.

Optionally, the total thickness of the heat-resistant layer and the liquid-conducting layer is 0.9mm-1.8mm, and the total weight of the heat-resistant layer and the liquid-conducting layer is 180g/m ² -300g/m ² .

Optionally, the length of the heat-resistant fiber is 38mm-60mm, the fineness is 0.8D-7.0D, the length of the hydrophilic fiber is 28mm-60mm, the fineness is 0.9D-2.5D, and the high resilience fiber The length is 38mm-60mm, and the fineness is 3D-10D. It can be understood that the unit of fineness D is Daniel. More preferably, the cross-sectional shape of the heat-resistant fiber or hydrophilic fiber will be a special-shaped cross-section, such as trilobal, cross-shaped, etc., to increase the liquid conductivity of the fiber itself. It can be understood that the unit of fineness is denier, referred to as denier (D), and its value is a unit of textile fiber thickness. The larger the denier, the thicker the fiber. Optionally, the length of the heat-resistant fiber is 50mm-60mm and the fineness is 0.8D-1D. The length of the hydrophilic fiber is 50mm-60mm and the fineness is 0.9D-1.0D. This application controls the above-mentioned heat resistance. The length and fineness of the fiber and hydrophilic fiber can ensure that the composite material can improve the oil conductivity while improving the material's oil storage and oil locking properties.

Optionally, the fiber composite material has an average pore diameter of 40-70 μm and a porosity of 60-90%.

This application also provides a method for preparing the above-mentioned fiber composite material, which adopts a needle punching process to prepare the fiber composite material.

Optional, include the following steps:

1) The heat-resistant layer material is opened, mixed and carded to obtain a single-layer fiber mesh thin layer material, and then several single-layer fiber mesh thin-layer materials are laid together to form a fiber mesh material, and then the fiber mesh material is Needle punching, entanglement and shaping to obtain a heat-resistant layer semi-made into a fiber mesh;

2) The liquid-conducting layer material is opened, mixed and carded to obtain a single-layer fiber mesh thin layer material, and then several single-layer fiber mesh thin-layer materials are laid together to form a fiber mesh material, and then the fiber mesh material is After needle punching and entangling, the liquid-conducting layer is semi-made into a fiber mesh;

3) The heat-resistant layer is semi-formed into a fiber mesh and the liquid-conducting layer is semi-formed into a fiber mesh and are combined together by needling, and then hot-rolled to obtain the fiber composite material.

optional,

The weight of the single-layer fiber mesh thin layer material in step 1) is 5-20g/ ^m2 , and the thickness of the fiber mesh material is 4-15cm. The acupuncture entanglement and shaping step includes sequentially performing The pre-acupuncture process and the barb process are optional. In the pre-acupuncture process, the needle density of the needle plate is 2000-4000 pieces/meter, the acupuncture frequency is 350-450 pricks/minute, and the acupuncture depth is 1.5- 2.0mm; in the barb process, the needle density of the needle plate is 3000-5000 pieces/meter, the acupuncture frequency is 390-500 piercings/minute, and the acupuncture depth is 1.9-2.5mm; further optionally, the pre-needle punching In the process, the needle density of the needle board is 3500 needles/meter, the needle punching frequency is 400 needles/minute, and the needle punching depth is 1.5-2.0mm; in the barb process, the needle density of the needle board is 4000 needles/meter, and the needle punching frequency is 440 piercings/minute, acupuncture depth 1.9-2.5mm.

The weight of the single-layer fiber mesh thin layer material in step 2) is 10-30g/m ² , and the thickness of the fiber mesh material is 11-16cm. The needle punching and entangling shaping step includes sequentially performing the fiber mesh material Pre-acupuncture process and barb process are optional. In the pre-acupuncture process, the needle density of the needle plate is 2000-4000 pieces/meter, the acupuncture frequency is 400-500 pricks/minute, and the acupuncture depth is 2.0- 2.5mm; in the barb process, the needle density of the needle plate is 3000-5000 pieces/meter, the acupuncture frequency is 450-550 piercings/minute, and the acupuncture depth is 2.5-3.0mm; further optionally, the pre-needle punching In the process, the needle density of the needle board is 3500 needles/meter, the needle punching frequency is 450 needles/minute, and the needle punching depth is 2.0-2.5mm; in the barb process, the needle density of the needle board is 4000 needles/meter, and the needle punching frequency is 500 piercings/minute, acupuncture depth 2.5-3.0mm.

The acupuncture step described in step 3) includes a forward pricking step and a barb pricking step. Optionally, in the forward pricking step, the needle density of the needle plate is 10,000-15,000 pieces/meter, and the acupuncture frequency is 1,000-1,400 pricks/minute. The acupuncture depth is 1.0-2.0mm; the needle density of the needle plate in the barb process is 12000-16000 pieces/meter, the acupuncture frequency is 1000-1400 piercings/minute, the acupuncture depth is 0.9-2.5mm, further optional , the needle density on the needle plate is 12,000 needles/meter, the needle punching frequency is 1,200 needles/minute, and the needle penetration depth is 1.0-1.5mm in the forward needling step; the needle density on the needle plate is 14,000 needles/meter, The puncture frequency is 1300 punctures/minute, and the puncture depth is 0.9-1.6mm. Optionally, the heat-resistant layer material is placed according to the side that contacts the needle first.

The hot rolling is carried out by a three-roller ironing machine, the vehicle speed is controlled to 20-50 meters/minute, the roller spacing is 0.9-1.8mm, and the hot rolling temperature is 160-180°C.

After hot rolling, it also includes the step of winding the fiber composite material to form a coil.

The present application also provides a liquid-conducting element, and the material of the liquid-conducting element is the fiber composite material described above or the fiber composite material prepared by the preparation method described above.

This application also provides a heating component, including the above-mentioned fiber composite material and a heating element in contact with the heat-resistant layer.

This application also provides an atomizer, the atomization device having the above-mentioned heating component.

This application also provides an electronic atomization device, including the above-mentioned atomizer.

Beneficial effects of this application:

1) The fiber composite material provided by this application has a heat-resistant layer and a liquid-conducting layer formed by lamination. The heat-resistant layer is made of polyimide fiber and Tencel fiber. Polyimide fiber has low thermal conductivity. , which is conducive to the dissipation of heat during the atomization process of the heating wire, and the viscosity of the e-liquid will decrease at higher temperatures, which is beneficial to the flow performance of the Tencel fiber to absorb the e-liquid, making the distribution of the e-liquid in the composite material more uniform, and at the same time guiding The liquid layer material uses Tencel fiber to fully supply the e-liquid on the surface of the polyimide fiber, which is conducive to improving the oil storage and oil locking performance of the entire composite material. This application uses specific polyimide fibers in the heat-resistant layer. and Tencel fiber, combined with the Tencel fiber in the liquid-conducting layer, can greatly improve the oil-conducting performance of the composite material. At the same time, the obtained composite material also has similar or even higher oil storage and oil-locking performance than existing oil-conducting materials. .

At the same time, polyimide fiber has very excellent heat resistance and will not change its physical properties during long-term high-temperature use. As the skeleton material of the heat-resistant layer, it can better maintain the dimensional stability of the material. Tencel fiber has better liquid absorption and liquid locking properties than cotton fiber, ensuring that the heat-resistant layer has sufficient oil storage capacity to prevent dry burning (800℃-1000℃) or even burning due to insufficient liquid supply. , the specific heat-resistant layer material and liquid-conducting layer material can ensure that even in continuous use, there is a sufficient supply of e-liquid, and the liquid-conducting, liquid storage, and liquid-locking performance will not decrease significantly, maintaining a longer taste consistency. At the same time, the composite material obtained has excellent heat resistance and service life, as well as better resistance to smoke oil erosion. It rarely degrades and forms harmful oligomers after long-term use, reducing odor.

2) The materials of the heat-resistant layer and/or the liquid-conducting layer described in this application also include high-resilience fibers, which have very obvious elastic recovery and can ensure no problem during the acupuncture process even when immersed in high-viscosity e-liquid. The high porosity structure of the woven fabric ensures that the oil conduction, oil storage and oil locking properties of the composite material will not be reduced or even improved during use.

3) The heat-resistant fibers described in this application also include polyphenylene sulfide fiber, aramid fiber, polytetrafluoroethylene fiber, carbon fiber, metal fiber, poly-p-phenylene benzobisoxazole fiber, and poly-m-phenylene benzene At least one of diimidazole fibers; the hydrophilic fiber also includes cotton fiber, flax fiber, hemp fiber, modal fiber, cupro fiber, bamboo fiber, seaweed fiber, chitosan fiber, carboxymethyl cellulose At least one of the fibers. By selecting the above-mentioned materials, this application will help improve the oil conductivity performance of the composite material, and at the same time ensure that the composite material has similar or even higher oil storage and oil locking properties to existing oil conduction materials, and can meet the performance requirements of different products. . For example, the introduction of metal fiber or carbon fiber can help improve the atomization efficiency of the overall e-liquid, and it also has the oil storage, oil locking, and oil conduction properties required by ordinary cotton materials; the introduction of seaweed fiber, chitosan fiber, and carboxymethyl cellulose Fiber helps improve the leakage performance of the product.

Description of the drawings

In order to more clearly explain the specific embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description The drawings illustrate some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without exerting creative efforts.

Figure 1 is a scanning electron microscope image of the overall cross-section of the fiber composite material prepared in Example 1.

Figure 2 is the heat resistance test result of the polyimide fiber used in Example 1 of the present application.

Figure 3 is the heat resistance test results of commercially available cotton fibers.

Figure 4 is the oil conductivity test result of the fiber composite material prepared in Example 1.

Figure 5 is an appearance photo of the fiber composite material prepared in Example 1.

Detailed ways

The following examples are provided to better understand the present application. They are not limited to the best implementation mode, and do not limit the content and protection scope of the present application. Anyone who is inspired by this application or uses this application will Any product that is identical or similar to the present application by combining it with other features of the prior art falls within the protection scope of the present application.

If no specific experimental steps or conditions are specified in the examples, the procedures can be carried out according to the conventional experimental steps or conditions described in literature in the field. If the manufacturer of the reagents or instruments used is not indicated, they are all conventional reagent products that can be purchased commercially.

It should be noted that the fibers described in the following examples or comparative examples of this application have their fineness and length marked in brackets. Taking Example 1 as an example, the polyimide fiber (2.0D×51mm) refers to The polyimide fiber has a fineness of 2.0D and a length of 51mm.

The thickness and weight of the fiber composite materials involved in the following examples are prepared by the following methods:

Thickness: The thickness of the fiber composite material was measured using a micrometer thickness gauge (BK-3281, measuring diameter 10 mm). The measurement area was 3m×0.5m. 20 points were measured in the width direction of the fiber composite material and the average value was obtained.

Gram weight test: Randomly sample 10 pieces from a 3m×0.5m fiber composite material, cut them into ^100cm2 circles, weigh them, and calculate the average value.

Example 1

This embodiment provides a fiber composite material, and its preparation method includes the following steps:

1) Send 400kg polyimide fiber (2.0D×51mm) and 600kg Tencel fiber (1.5D×38mm) into the rough opening machine to preliminary open the bulk, curled and compacted fibers. The machine speed is 1250 rpm, and then the initially opened fibers are sent to the mixing bin for mixing, and then the fibers are carded into a single-layer fiber mesh thin layer material of 10g/ ^m2 by the action of the cotton feeding roller of the carding machine. , then lay several single layers of thin fiber mesh materials together to form a fiber mesh material (the thickness of the fiber mesh material is 12cm), and then send the fiber mesh material to the pre-needle punching machine and the back needling machine in sequence for pre-needle punching and back needling to tangle and shape the fiber web material. In the pre- needling process, the needle density of the needle plate is 3500 pieces/meter, the needling frequency is 400 punches/minute, and the needling depth is 1.7mm; in the barb process The needle density of the needle board is 4000 needles/meter, the needle punching frequency is 440 punches/minute, the needle punching depth is 2.1mm, and the heat-resistant layer is semi-made into a fiber mesh;

2) Feed 1000kg Tencel fiber (1.5D×38mm) into the rough opening machine to preliminarily open the massive, curled and compacted fibers. The rough opening machine speed is 1540 rpm, and then the preliminary opening is carried out. The fibers are sent to the mixing warehouse for mixing, and then the fibers are carded into a single-layer fiber mesh thin material of 20g/ ^m2 by the action of the cotton feed roller of the carding machine, and then several single-layer fiber mesh thin-layer materials are laid Together, they form a fiber web material (the thickness of the fiber web material is 15cm), and then the fiber web materials are sent to the pre-needle punching machine and the back needling machine in sequence for pre-needle punching and back needling to entangle and shape the fiber web material. , the needle density of the needle plate in the pre-needle punching process is 3500 needles/meter, the needle punching frequency is 450 needles/minute, and the needle punching depth is 2.2mm; the needle density of the needle plate in the barb process is 4000 needles/meter, and the needle punching The frequency is 500 punctures/minute, the depth of acupuncture is 2.7mm, and the liquid-conducting layer is semi-made into a fiber mesh;

3) The heat-resistant layer is semi-formed into a fiber mesh and the liquid-conducting layer is semi-formed into a fiber mesh and sent to the forward acupuncture machine through double channels for repeated acupuncture, and then through the inverted acupuncture machine for acupuncture to allow the two to pass through the fiber The needles are cross-tangled and fixed together. In the forward punching step, the needle density of the needle plate is 12000 pieces/meter, the needle punching frequency is 1200 punches/minute, and the needle punching depth is 1.3mm; in the barb punching step, the needle density of the needle plate is 14,000 pieces/meter, acupuncture frequency is 1,300 pricks/minute, acupuncture depth is 1.3mm, and then hot-rolled through a three-roller hot-rolling machine. The control speed is 20 meters/minute, the roller spacing is 1.3mm, and the hot-rolling temperature is 180°C, and after hot rolling, it is wound to form a coil to obtain the fiber composite material.

The fiber composite material prepared above includes a heat-resistant layer and a liquid-conducting layer arranged in a stack; the material of the heat-resistant layer is polyimide fiber and Tencel fiber, and the material of the liquid-conducting layer is Tencel fiber, Based on the total weight of the heat-resistant layer material, the weight proportion of polyimide fiber is 40%, the weight proportion of Tencel fiber is 60%, the porosity of the heat-resistant layer is 78%, and the liquid-conducting layer The porosity is 60%, the thickness of the heat-resistant layer accounts for 45% of the total thickness of the heat-resistant layer and the liquid-conducting layer, and the weight of the heat-resistant layer accounts for 45% of the total weight of the heat-resistant layer and the liquid-conducting layer. , the total thickness of the heat-resistant layer and the liquid-conducting layer is 1.5mm, and the total weight of the heat-resistant layer and the liquid-conducting layer is 250g/m ² .

Figure 1 is a scanning electron microscope image of the overall cross-section of the fiber composite material prepared in Example 1. As can be seen from Figure 1, the upper layer is a relatively loose and porous heat-resistant layer structure, and the lower layer is a relatively tight liquid-conducting layer. Figure 5 is a photo of the appearance of the fiber composite material prepared above. Its structure can be divided into two layers. The upper layer is a heat-resistant layer (a mixture of polyimide fiber and Tencel), and the other layer is a liquid-conducting layer ( Tencel fiber).

Figure 2 shows the heat resistance test results of the polyimide fiber raw materials used above. Figure 3 is the heat resistance test results of commercially available cotton fibers. It can be seen from Figures 2 and 3 that the heat resistance of polyimide fiber is better than that of cotton fiber. Applying polyimide fiber to the heat-resistant layer of the present application is more conducive to improving the heat resistance of the composite material.

Figure 4 shows the oil conductivity test results of the fiber composite materials prepared in this embodiment. The test process was divided into four parallel test samples, namely Example 1-1, Example 1-2, and Example 1-3. , Examples 1-4, the test results are shown in Figure 4.

Example 2

1) Send 800kg polyimide fiber (2.0D×51mm) and 200kg Tencel fiber (1.5D×38mm) into the rough opening machine to preliminary open the massive, curled and compacted fibers. The speed of the machine is 1250 rpm, and then the initially opened fibers are sent to the mixing bin for mixing, and then the fibers are carded into a single-layer fiber mesh thin layer material of 5g/ ^m2 by the action of the cotton feeding roller of the carding machine. , then lay several single layers of thin fiber mesh materials together to form a fiber mesh material (the thickness of the fiber mesh material is 4.5cm), and then send the fiber mesh material to the pre-needle machine and the back needle machine in sequence for pre-needle Punching and back needling are used to tangle and shape the fiber web material. In the pre- needling process, the needle density of the needle plate is 3500 pieces/meter, the needling frequency is 350 punches/minute, and the needling depth is 1.5mm; the barb process The needle density of the middle needle board is 4000 needles/meter, the needle punching frequency is 390 punches/minute, and the needle punching depth is 1.9mm, and the heat-resistant layer is semi-made into a fiber mesh;

2) Feed 1000kg Tencel fiber (1.5D×38mm) into the rough opening machine to preliminarily open the massive, curled and compacted fibers. The rough opening machine speed is 1540 rpm, and then the preliminary opening is carried out. The fibers are sent to the mixing warehouse for mixing, and then the fibers are carded into a single-layer fiber mesh thin material of 10g/ ^m2 by the action of the cotton feed roller of the carding machine, and then several single-layer fiber mesh thin-layer materials are laid Together, they form a fiber web material (the thickness of the fiber web material is 11cm), and then the fiber web material is sent to the pre-needle punching machine and the back needling machine in sequence for pre-needle punching and back needling to entangle and shape the fiber web material. , the needle density of the needle plate in the pre-needle punching process is 3500 needles/meter, the needle punching frequency is 400 needles/minute, and the needle punching depth is 2.0mm; the needle density of the needle plate in the barb process is 4000 needles/meter, and the needle punching The frequency is 450 punctures/minute, the depth of acupuncture is 2.5mm, and the liquid-conducting layer is semi-made into a fiber mesh;

3) The heat-resistant layer is semi-formed into a fiber mesh and the liquid-conducting layer is semi-formed into a fiber mesh and sent to the forward acupuncture machine through double channels for repeated acupuncture, and then through the inverted acupuncture machine for acupuncture to allow the two to pass through the fiber The needles are cross-tangled and fixed together. In the forward punching step, the needle density of the needle plate is 12000 pieces/meter, the needle punching frequency is 1200 punches/minute, and the needle punching depth is 1.5mm; in the barb punching step, the needle density of the needle plate is 14000 pieces/meter, acupuncture frequency is 1300 pricks/minute, acupuncture depth is 1.6mm, and then hot-rolled through a three-roller ironing machine. The control speed is 20 meters/minute, the roller spacing is 0.9mm, and the hot-rolling temperature is 180°C, and after hot rolling, it is wound to form a coil to obtain the fiber composite material.

The fiber composite material prepared above includes a heat-resistant layer and a liquid-conducting layer arranged in a stack; the material of the heat-resistant layer is polyimide fiber and Tencel fiber, and the material of the liquid-conducting layer is Tencel fiber, Based on the total weight of the heat-resistant layer material, the weight proportion of polyimide fiber is 80%, the weight proportion of Tencel fiber is 20%, the porosity of the heat-resistant layer is 71%, and the liquid-conducting layer The porosity is 50%, the thickness of the heat-resistant layer accounts for 30% of the total thickness of the heat-resistant layer and the liquid-conducting layer, and the weight of the heat-resistant layer accounts for 30% of the total weight of the heat-resistant layer and the liquid-conducting layer. , the total thickness of the heat-resistant layer and the liquid-conducting layer is 0.9mm, and the total weight of the heat-resistant layer and the liquid-conducting layer is 180g/m ² .

Example 3

1) Send 200kg polyimide fiber (2.0D×51mm) and 800kg Tencel fiber (1.5D×38mm) into the rough opening machine to preliminary open the massive, curled and compacted fibers. The speed of the machine is 1250 rpm, and then the initially opened fibers are sent to the mixing bin for mixing, and then the fibers are carded into a single-layer fiber mesh thin layer material of 20g/ ^m2 by the action of the cotton feeding roller of the carding machine. , then lay several single layers of thin fiber mesh materials together to form a fiber mesh material (the thickness of the fiber mesh material is 15cm), and then send the fiber mesh material to the pre-needle punching machine and the back needling machine in sequence for pre-needle punching and back needling to tangle and shape the fiber web material. In the pre- needling process, the needle density of the needle plate is 3500 pieces/meter, the needling frequency is 450 punches/minute, and the needling depth is 2.0mm; in the barb process The needle density of the needle board is 4000 needles/meter, the needle punching frequency is 490 punches/minute, the needle punching depth is 2.4mm, and the heat-resistant layer is semi-made into a fiber mesh;

2) Feed 1000kg Tencel fiber (1.5D×38mm) into the rough opening machine to preliminarily open the massive, curled and compacted fibers. The rough opening machine speed is 1540 rpm, and then the preliminary opening is carried out. The fibers are sent to the mixing warehouse for mixing, and then the fiber is carded into a single-layer fiber mesh thin material of 30g/ ^m2 by the action of the cotton feed roller of the carding machine, and then several single-layer fiber mesh thin-layer materials are laid Together, they form a fiber web material (the thickness of the fiber web material is 15cm), and then the fiber web materials are sent to the pre-needle punching machine and the back needling machine in sequence for pre-needle punching and back needling to entangle and shape the fiber web material. , the needle density of the needle plate in the pre-needle punching process is 3500 needles/meter, the needle punching frequency is 500 needles/minute, and the needle punching depth is 2.5mm; the needle density of the needle plate in the barb process is 4000 needles/meter, and the needle punching The frequency is 450 punctures/minute, the depth of acupuncture is 3.0mm, and the liquid-conducting layer is semi-made into a fiber mesh;

3) The heat-resistant layer is semi-formed into a fiber mesh and the liquid-conducting layer is semi-formed into a fiber mesh and sent to the forward acupuncture machine through double channels for repeated acupuncture, and then through the inverted acupuncture machine for acupuncture to allow the two to pass through the fiber The needles are cross-tangled and fixed together. In the forward punching step, the needle density of the needle plate is 12000 pieces/meter, the needle punching frequency is 1200 punches/minute, and the needle punching depth is 2.0mm; in the barb punching step, the needle density of the needle plate is 14,000 pieces/meter, acupuncture frequency is 1,300 pricks/minute, acupuncture depth is 2.5mm, and then hot-rolled through a three-roller hot-rolling machine. The control speed is 20 meters/minute, the roller spacing is 1.8mm, and the hot-rolling temperature is 180°C, and after hot rolling, it is wound to form a coil to obtain the fiber composite material.

The fiber composite material prepared above includes a heat-resistant layer and a liquid-conducting layer arranged in a stack; the material of the heat-resistant layer is polyimide fiber and Tencel fiber, and the material of the liquid-conducting layer is Tencel fiber, Based on the total weight of the heat-resistant layer material, the weight proportion of polyimide fiber is 20%, the weight proportion of Tencel fiber is 80%, the porosity of the heat-resistant layer is 78%, and the liquid-conducting layer The porosity is 61%, the thickness of the heat-resistant layer accounts for 50% of the total thickness of the heat-resistant layer and the liquid-conducting layer, and the weight of the heat-resistant layer accounts for 50% of the total weight of the heat-resistant layer and the liquid-conducting layer , the total thickness of the heat-resistant layer and the liquid-conducting layer is 1.8mm, and the total weight of the heat-resistant layer and the liquid-conducting layer is 300g/m ² .

Example 4

1) Feed 300kg polyimide fiber (2.0D×51mm), 100kg three-dimensional curled hollow polyester fiber (5D×60mm), and 600kg Tencel fiber (1.5D×38mm) into the rough opening machine to make them into blocks. The curled and compacted fibers are initially opened, and the rough opening machine speed is 1250 rpm. Then the initially opened fibers are sent to the mixing bin for mixing, and then the fibers are carded into 10g/ ^m2 single-layer fiber mesh thin-layer material, and then lay several single-layer fiber mesh thin-layer materials together to form a fiber mesh material (the thickness of the fiber mesh material is 10cm), and then feed the fiber mesh materials in sequence The pre-needle punching machine and the back-needle punching machine perform pre-needle punching and back-needle punching to tangle and shape the fiber web material. In the pre-needle punching process, the needle density of the needle plate is 3500 pieces/meter, and the needle punching frequency is 400 punches/meter. minutes, the needling depth is 2.0mm; in the barb process, the needle density of the needle plate is 4000 needles/meter, the needling frequency is 440 punches/minute, the needling depth is 2.4mm, and the heat-resistant layer is semi-made into a fiber mesh;

2) Send 900kg of Tencel fiber (1.5D×38mm) and 100kg of three-dimensional curled hollow polyester fiber (5D×60mm) into the rough opening machine, so that the massive, curled and compacted fibers are initially opened. The rough opening machine The rotating speed is 1540 rpm, and then the initially loosened fibers are sent to the mixing bin for mixing, and then the fibers are carded into a single-layer fiber mesh thin layer material of 20g/ ^m2 by the action of the cotton feeding roller of the carding machine. Then several single layers of thin fiber mesh materials are laid together to form a fiber mesh material (the thickness of the fiber mesh material is 15cm), and then the fiber mesh materials are sent to the pre-needle punching machine and the back needling machine in sequence for pre-needle punching and Back needling is used to tangle and shape the fiber web material. In the pre- needling process, the needle density of the needle plate is 3500 pieces/meter, the needling frequency is 450 punches/minute, and the needling depth is 2.5mm; The cloth needle density is 4000 needles/meter, the needle punching frequency is 500 needles/minute, the needle punching depth is 3.0mm, and the liquid-conducting layer is semi-made into a fiber mesh;

The fiber composite material prepared above includes a heat-resistant layer and a liquid-conducting layer arranged in a stack; the material of the heat-resistant layer is polyimide fiber, Tencel fiber and three-dimensional crimped hollow polyester fiber, and the liquid-conducting layer is The materials are Tencel fiber and three-dimensional curly hollow polyester fiber. Based on the total weight of the heat-resistant layer material, the weight proportion of polyimide fiber is 30%, the weight proportion of Tencel fiber is 60%, and the three-dimensional curly hollow fiber is The weight proportion of polyester fiber is 10%. Based on the total weight of the liquid-conducting layer material, the weight proportion of Tencel fiber is 90%. The weight proportion of three-dimensional crimped hollow polyester fiber is 10%. The heat-resistant layer The porosity of the liquid-conducting layer is 85%, the porosity of the liquid-conducting layer is 65%, the thickness of the heat-resistant layer accounts for 45% of the total thickness of the heat-resistant layer and the liquid-conducting layer, and the weight of the heat-resistant layer accounts for 45% of the total thickness of the heat-resistant layer. and 45% of the total weight of the liquid-conducting layer, the total thickness of the heat-resistant layer and the liquid-conducting layer is 1.5mm, and the total weight of the heat-resistant layer and the liquid-conducting layer is 250g/m ² .

Example 5

1) Feed 300kg polyimide fiber (2.0D×51mm), 100kg three-dimensional curled hollow polyester fiber (5D×60mm), and 600kg Tencel fiber (1.5D×38mm) into the rough opening machine to make them into blocks. The curled and compacted fibers are initially opened, and the rough opening machine speed is 1250 rpm. Then the initially opened fibers are sent to the mixing bin for mixing, and then the fibers are carded into 10g/ ^m2 single layer fiber mesh thin layer material, and then lay several single layer fiber mesh thin layer materials together to form fiber mesh material (the thickness of fiber mesh material is 12cm), and then feed the fiber mesh material in sequence The pre-needle punching machine and the back-needle punching machine perform pre-needle punching and back-needle punching to tangle and shape the fiber web material. In the pre-needle punching process, the needle density of the needle plate is 3500 pieces/meter, and the needle punching frequency is 400 punches/meter. minutes, the needling depth is 1.7mm; in the barb process, the needle density of the needle plate is 4000 needles/meter, the needling frequency is 440 punches/minute, the needling depth is 2.1mm, and the heat-resistant layer is semi-made into a fiber mesh;

2) Send 900kg of Tencel fiber (1.5D×38mm) and 100kg of three-dimensional curled hollow polyester fiber (5D×60mm) into the rough opening machine, so that the massive, curled and compacted fibers are initially opened. The rough opening machine The rotating speed is 1540 rpm, and then the initially loosened fibers are sent to the mixing bin for mixing, and then the fibers are carded into a single-layer fiber mesh thin layer material of 20g/ ^m2 by the action of the cotton feeding roller of the carding machine. Then several single layers of thin fiber mesh materials are laid together to form a fiber mesh material (the thickness of the fiber mesh material is 15cm), and then the fiber mesh materials are sent to the pre-needle punching machine and the back needling machine in sequence for pre-needle punching and Back needling is used to tangle and shape the fiber web material. In the pre- needling process, the needle density of the needle plate is 3500 pieces/meter, the needling frequency is 450 punches/minute, and the needling depth is 2.2mm; The cloth needle density is 4000 needles/meter, the needle punching frequency is 500 needles/minute, the needle punching depth is 2.7mm, and the liquid conductive layer is semi-made into a fiber mesh;

The fiber composite material prepared above includes a heat-resistant layer and a liquid-conducting layer arranged in a stack; the material of the heat-resistant layer is polyimide fiber, Tencel fiber and three-dimensional crimped hollow polyester fiber, and the liquid-conducting layer is The materials are Tencel fiber and three-dimensional curly hollow polyester fiber. Based on the total weight of the heat-resistant layer material, the weight proportion of polyimide fiber is 30%, the weight proportion of Tencel fiber is 60%, and the three-dimensional curly hollow fiber is The weight proportion of polyester fiber is 10%. Based on the total weight of the liquid-conducting layer material, the weight proportion of Tencel fiber is 90%. The weight proportion of three-dimensional crimped hollow polyester fiber is 10%. The heat-resistant layer The porosity of the liquid-conducting layer is 82%, and the porosity of the liquid-conducting layer is 77%. The thickness of the heat-resistant layer accounts for 40% of the total thickness of the heat-resistant layer and the liquid-conducting layer. The weight of the heat-resistant layer accounts for 40% of the total thickness of the heat-resistant layer. and 40% of the total weight of the liquid-conducting layer, the total thickness of the heat-resistant layer and the liquid-conducting layer is 1.62mm, and the total weight of the heat-resistant layer and the liquid-conducting layer is 250g/m ² .

Example 6

1) Feed 200kg polyimide fiber (2.0D×51mm), 200kg three-dimensional curled hollow polyester fiber (5D×60mm), and 600kg Tencel fiber (1.5D×38mm) into the rough opening machine to make them into blocks. The curled and compacted fibers are initially opened, and the rough opening machine speed is 1250 rpm. Then the initially opened fibers are sent to the mixing bin for mixing, and then the fibers are carded into 20g/ ^m2 single-layer fiber mesh thin-layer material, and then lay several single-layer fiber mesh thin-layer materials together to form a fiber mesh material (the thickness of the fiber mesh material is 14cm), and then feed the fiber mesh materials in sequence The pre-needle punching machine and the back-needle punching machine perform pre-needle punching and back-needle punching to entangle and shape the fiber web material. In the pre-needle punching process, the needle density of the needle plate is 3500 pieces/meter, and the needle punching frequency is 450 punches/meter. minutes, the needling depth is 2.0mm; in the barb process, the needle density of the needle plate is 4000 needles/meter, the needling frequency is 490 punches/minute, the needling depth is 2.4mm, and the heat-resistant layer is semi-made into a fiber mesh;

2) Send 800kg of Tencel fiber (1.5D×38mm) and 200kg of three-dimensional curled hollow polyester fiber (5D×60mm) into the rough opening machine, so that the massive, curled and compacted fibers can be initially opened. The rough opening machine The rotation speed is 1540 rpm, and then the initially loosened fibers are sent to the mixing bin for mixing, and then the fibers are carded into a single-layer fiber mesh thin layer material of 30g/ ^m2 by the action of the cotton feeding roller of the carding machine. Then several single layers of thin fiber mesh materials are laid together to form a fiber mesh material (the thickness of the fiber mesh material is 16cm), and then the fiber mesh materials are sent to the pre-needle punching machine and the back needling machine in sequence for pre-needle punching and Back needling is used to entangle and shape the fiber web material. In the pre- needling process, the needle density of the needle plate is 3500 pieces/meter, the needling frequency is 500 punches/minute, and the needling depth is 2.5mm; The cloth needle density is 4000 needles/meter, the needle punching frequency is 550 needles/minute, the needle punching depth is 3.0mm, and the liquid-conducting layer is semi-made into a fiber mesh;

The fiber composite material prepared above includes a heat-resistant layer and a liquid-conducting layer arranged in a stack; the material of the heat-resistant layer is polyimide fiber, Tencel fiber and three-dimensional crimped hollow polyester fiber, and the liquid-conducting layer is The materials are Tencel fiber and three-dimensional curly hollow polyester fiber. Based on the total weight of the heat-resistant layer material, the weight proportion of polyimide fiber is 20%, the weight proportion of Tencel fiber is 60%, and the three-dimensional curly hollow The weight proportion of polyester fiber is 20%. Based on the total weight of the liquid-conducting layer material, the weight proportion of Tencel fiber is 80%, the weight proportion of three-dimensional crimped hollow polyester fiber is 20%, and the heat-resistant layer The porosity of the liquid-conducting layer is 98%, and the porosity of the liquid-conducting layer is 80%. The thickness of the heat-resistant layer accounts for 50% of the total thickness of the heat-resistant layer and the liquid-conducting layer. The weight of the heat-resistant layer accounts for 50% of the total thickness of the heat-resistant layer. and 50% of the total weight of the liquid-conducting layer, the total thickness of the heat-resistant layer and the liquid-conducting layer is 1.8mm, and the total weight of the heat-resistant layer and the liquid-conducting layer is 300g/m ² .

Example 7

1) Feed 200kg polyimide fiber (2.0D×51mm), 200kg three-dimensional curled hollow polyester fiber (5D×60mm), and 600kg Tencel fiber (1.5D×38mm) into the rough opening machine to make them into blocks. The curled and compacted fibers are initially opened, and the rough opening machine speed is 1250 rpm. Then the initially opened fibers are sent to the mixing bin for mixing, and then the fibers are carded into 10g/ ^m2 single layer fiber mesh thin layer material, and then lay several single layer fiber mesh thin layer materials together to form fiber mesh material (the thickness of fiber mesh material is 12cm), and then feed the fiber mesh material in sequence The pre-needle punching machine and the back-needle punching machine perform pre-needle punching and back-needle punching to tangle and shape the fiber web material. In the pre-needle punching process, the needle density of the needle plate is 3500 pieces/meter, and the needle punching frequency is 400 punches/meter. minutes, the needling depth is 1.7mm; in the barb process, the needle density of the needle plate is 4000 needles/meter, the needling frequency is 440 punches/minute, the needling depth is 2.1mm, and the heat-resistant layer is semi-made into a fiber mesh;

2) Send 800kg of Tencel fiber (1.5D×38mm) and 200kg of three-dimensional curled hollow polyester fiber (5D×60mm) into the rough opening machine, so that the massive, curled and compacted fibers can be initially opened. The rough opening machine The rotating speed is 1540 rpm, and then the initially loosened fibers are sent to the mixing bin for mixing, and then the fibers are carded into a single-layer fiber mesh thin layer material of 20g/ ^m2 by the action of the cotton feeding roller of the carding machine. Then several single layers of thin fiber mesh materials are laid together to form a fiber mesh material (the thickness of the fiber mesh material is 15cm), and then the fiber mesh materials are sent to the pre-needle punching machine and the back needling machine in sequence for pre-needle punching and Back needling is used to tangle and shape the fiber web material. In the pre- needling process, the needle density of the needle plate is 3500 pieces/meter, the needling frequency is 450 punches/minute, and the needling depth is 2.2mm; The cloth needle density is 4000 needles/meter, the needle punching frequency is 500 needles/minute, the needle punching depth is 2.7mm, and the liquid conductive layer is semi-made into a fiber mesh;

3) The heat-resistant layer is semi-formed into a fiber mesh and the liquid-conducting layer is semi-formed into a fiber mesh and sent to the forward acupuncture machine through double channels for repeated acupuncture, and then through the inverted acupuncture machine for acupuncture to allow the two to pass through the fiber The needles are cross-tangled and fixed together. In the forward punching step, the needle density of the needle plate is 12000 pieces/meter, the needle punching frequency is 1200 punches/minute, and the needle punching depth is 1.3mm; in the barb punching step, the needle density of the needle plate is 14000 pieces/meter, the needle punching frequency is 1300 punches/minute, the needle punching depth is 1.3mm, and then hot-rolled through a three-roller hot-rolling machine. The control speed is 20 meters/minute, the roller spacing is 1.3mm, and the hot-rolling temperature is 180°C, and after hot rolling, it is wound to form a coil to obtain the fiber composite material.

The fiber composite material prepared above includes a heat-resistant layer and a liquid-conducting layer arranged in a stack; the material of the heat-resistant layer is polyimide fiber, Tencel fiber and three-dimensional crimped hollow polyester fiber, and the liquid-conducting layer is The materials are Tencel fiber and three-dimensional curly hollow polyester fiber. Based on the total weight of the heat-resistant layer material, the weight proportion of polyimide fiber is 20%, the weight proportion of Tencel fiber is 60%, and the three-dimensional curly hollow The weight proportion of polyester fiber is 20%. Based on the total weight of the liquid-conducting layer material, the weight proportion of Tencel fiber is 80%, the weight proportion of three-dimensional crimped hollow polyester fiber is 20%, and the heat-resistant layer The porosity of the liquid-conducting layer is 81%, and the porosity of the liquid-conducting layer is 81%. The thickness of the heat-resistant layer accounts for 45% of the total thickness of the heat-resistant layer and the liquid-conducting layer. The weight of the heat-resistant layer accounts for 45% of the total thickness of the heat-resistant layer. and 45% of the total weight of the liquid-conducting layer, the total thickness of the heat-resistant layer and the liquid-conducting layer is 1.65mm, and the total weight of the heat-resistant layer and the liquid-conducting layer is 250g/m ² .

Example 8

1) Feed 750kg polyimide fiber (2.0D×51mm), 50kg three-dimensional curled hollow polyester fiber (5D×60mm), and 200kg Tencel fiber (1.5D×38mm) into the rough opening machine to make them into blocks. The curled and compacted fibers are initially opened, and the rough opening machine speed is 1250 rpm. Then the initially opened fibers are sent to the mixing bin for mixing, and then the fibers are carded into 5g/ ^m2 single-layer fiber mesh thin-layer material, and then lay several single-layer fiber mesh thin-layer materials together to form a fiber mesh material (the thickness of the fiber mesh material is 6cm), and then feed the fiber mesh materials in sequence The pre-needle punching machine and the back-needle punching machine perform pre-needle punching and back-needle punching to entangle and shape the fiber web material. In the pre-needle punching process, the needle density of the needle plate is 3500 pieces/meter, and the needle punching frequency is 350 punches/meter. minutes, the needling depth is 1.5mm; in the barb process, the needle density of the needle plate is 4000 needles/meter, the needling frequency is 390 punches/minute, the needling depth is 1.9mm, and the heat-resistant layer is semi-made into a fiber mesh;

2) Send 950kg Tencel fiber (1.5D×38mm) and 50kg three-dimensional curled hollow polyester fiber (5D×60mm) into the rough opening machine to preliminarily open the massive, curled and compacted fibers. The rough opening machine The rotation speed is 1540 rpm, and then the initially loosened fibers are sent to the mixing bin for mixing, and then the fibers are carded into a single-layer fiber mesh thin layer material of 10g/ ^m2 by the action of the cotton feeding roller of the carding machine. Then several single layers of thin fiber mesh materials are laid together to form a fiber mesh material (the thickness of the fiber mesh material is 13cm), and then the fiber mesh materials are sent to the pre-needle punching machine and the back needling machine in sequence for pre-needle punching and Back needling is used to entangle and shape the fiber web material. In the pre- needling process, the needle density of the needle plate is 3500 pieces/meter, the needling frequency is 400 punches/minute, and the needling depth is 2.0mm; The cloth needle density is 4000 needles/meter, the needle punching frequency is 450 needles/minute, the needle punching depth is 2.5mm, and the liquid-conducting layer is semi-made into a fiber mesh;

The fiber composite material prepared above includes a heat-resistant layer and a liquid-conducting layer arranged in a stack; the material of the heat-resistant layer is polyimide fiber, Tencel fiber and three-dimensional crimped hollow polyester fiber, and the liquid-conducting layer is The materials are Tencel fiber and three-dimensional curly hollow polyester fiber. Based on the total weight of the heat-resistant layer material, the weight proportion of polyimide fiber is 75%, the weight proportion of Tencel fiber is 20%, and the three-dimensional curly hollow fiber is The weight proportion of polyester fiber is 5%. Based on the total weight of the liquid-conducting layer material, the weight proportion of Tencel fiber is 95%. The weight proportion of three-dimensional crimped hollow polyester fiber is 5%. The heat-resistant layer The porosity of the liquid-conducting layer is 82%, and the porosity of the liquid-conducting layer is 63%. The thickness of the heat-resistant layer accounts for 30% of the total thickness of the heat-resistant layer and the liquid-conducting layer. The weight of the heat-resistant layer accounts for 30% of the total thickness of the heat-resistant layer. and 50% of the total weight of the liquid-conducting layer, the total thickness of the heat-resistant layer and the liquid-conducting layer is 0.9mm, and the total weight of the heat-resistant layer and the liquid-conducting layer is 180g/m ² .

Example 9

This embodiment provides a fiber composite material, which differs from Example 1 in that 400 kg of polyimide fiber is replaced with 300 kg of polyimide fiber and 100 kg of polyphenylene sulfide fiber.

Example 10

This embodiment provides a fiber composite material, which differs from Example 1 in that 400 kg of polyimide fiber is replaced with 300 kg of polyimide fiber and 100 kg of poly-p-phenylene benzobisoxazole fiber.

Example 11

This embodiment provides a fiber composite material, which differs from Example 1 in that in step 2), 1000 kg of Tencel fiber is replaced with 800 kg of Tencel fiber and 200 kg of cotton fiber.

Example 12

This embodiment provides a fiber composite material, which differs from Example 1 in that in step 2), 1000 kg of Tencel fiber is replaced with 900 kg of Tencel fiber and 100 kg of flax fiber.

Example 13

1) Send 400kg of polyimide fiber (0.89D×60mm) and 600kg of Tencel fiber (0.9D×60mm) into the rough opening machine to initially open the massive, curled and compacted fibers. The machine speed is 1250 rpm, and then the initially opened fibers are sent to the mixing bin for mixing, and then the fibers are carded into a single-layer fiber mesh thin layer material of 10g/ ^m2 by the action of the cotton feeding roller of the carding machine. , then lay several single layers of thin fiber mesh materials together to form fiber mesh materials (the thickness of the fiber mesh material is 12cm), and then send the fiber mesh materials to the pre-needle punching machine and the back needling machine in sequence for pre-needle punching and back needling to tangle and shape the fiber web material. In the pre- needling process, the needle density of the needle plate is 3500 pieces/meter, the needling frequency is 400 punches/minute, and the needling depth is 2.0mm; in the barb process The needle density of the needle board is 4000 needles/meter, the needle punching frequency is 440 punches/minute, the needle punching depth is 2.4mm, and the heat-resistant layer is semi-made into a fiber mesh;

2) Feed 1000kg Tencel fiber (0.9D×60mm) into the rough opening machine to preliminarily open the massive, curled and compacted fibers. The rough opening machine speed is 1540 rpm, and then the preliminary opening is carried out. The fibers are sent to the mixing warehouse for mixing, and then the fibers are carded into a single-layer fiber mesh thin material of 20g/ ^m2 by the action of the cotton feed roller of the carding machine, and then several single-layer fiber mesh thin-layer materials are laid Together, they form a fiber web material (the thickness of the fiber web material is 15cm), and then the fiber web materials are sent to the pre-needle punching machine and the back needling machine in sequence for pre-needle punching and back needling to entangle and shape the fiber web material. , the needle density of the needle plate in the pre-needle punching process is 3500 needles/meter, the needle punching frequency is 450 needles/minute, and the needle punching depth is 2.5mm; the needle density of the needle plate in the barb process is 4000 needles/meter, and the needle punching The frequency is 500 punctures/minute, the depth of acupuncture is 3.0mm, and the liquid-conducting layer is semi-made into a fiber mesh;

The fiber composite material prepared above includes a heat-resistant layer and a liquid-conducting layer arranged in a stack; the material of the heat-resistant layer is polyimide fiber and Tencel fiber, and the material of the liquid-conducting layer is Tencel fiber, Based on the total weight of the heat-resistant layer material, the weight proportion of polyimide fiber is 40%, and the weight proportion of Tencel fiber is 60%. Based on the total weight of the liquid-conducting layer material, the weight proportion of Tencel fiber is The weight ratio is 100%, the porosity of the heat-resistant layer is 83%, the porosity of the liquid-conducting layer is 73%, and the thickness of the heat-resistant layer accounts for 45% of the total thickness of the heat-resistant layer and the liquid-conducting layer, The weight of the heat-resistant layer accounts for 45% of the total weight of the heat-resistant layer and the liquid-conducting layer. The total thickness of the heat-resistant layer and the liquid-conducting layer is 1.5mm, and the total weight of the heat-resistant layer and the liquid-conducting layer is 250g. /m ² .

Example 14

1) Send 400kg polyimide fiber (0.89D×60mm) and 600kg Tencel fiber (0.9D×60mm) into the rough opening machine to preliminary open the massive, curled and compacted fibers. The machine speed is 1250 rpm, and then the initially opened fibers are sent to the mixing bin for mixing, and then the fibers are carded into a single-layer fiber mesh thin layer material of 10g/ ^m2 by the action of the cotton feeding roller of the carding machine. , then lay several single layers of thin fiber mesh materials together to form a fiber mesh material (the thickness of the fiber mesh material is 12cm), and then send the fiber mesh material to the pre-needle punching machine and the back needling machine in sequence for pre-needle punching and back needling to tangle and shape the fiber web material. In the pre- needling process, the needle density of the needle plate is 3500 pieces/meter, the needling frequency is 400 punches/minute, and the needling depth is 1.7mm; in the barb process The needle density of the needle board is 4000 needles/meter, the needle punching frequency is 440 punches/minute, the needle punching depth is 2.1mm, and the heat-resistant layer is semi-made into a fiber mesh;

2) Feed 1000kg Tencel fiber (0.9D×60mm) into the rough opening machine to preliminarily open the massive, curled and compacted fibers. The speed of the rough opening machine is 1540 rpm, and then the preliminary opening is carried out. The fibers are sent to the mixing warehouse for mixing, and then the fibers are carded into a single-layer fiber mesh thin material of 20g/ ^m2 by the action of the cotton feed roller of the carding machine, and then several single-layer fiber mesh thin-layer materials are laid Together, they form a fiber web material (the thickness of the fiber web material is 15cm), and then the fiber web materials are sent to the pre-needle punching machine and the back needling machine in sequence for pre-needle punching and back needling to entangle and shape the fiber web material. , the needle density of the needle plate in the pre-needle punching process is 3500 needles/meter, the needle punching frequency is 450 needles/minute, and the needle punching depth is 2.2mm; the needle density of the needle plate in the barb process is 4000 needles/meter, and the needle punching The frequency is 500 punctures/min, the depth of acupuncture is 2.7mm, and the liquid-conducting layer is semi-made into a fiber mesh;

The fiber composite material prepared above includes a heat-resistant layer and a liquid-conducting layer arranged in a stack; the material of the heat-resistant layer is polyimide fiber and Tencel fiber, and the material of the liquid-conducting layer is Tencel fiber, Based on the total weight of the heat-resistant layer material, the weight proportion of polyimide fiber is 40%, and the weight proportion of Tencel fiber is 60%. Based on the total weight of the liquid-conducting layer material, the weight proportion of Tencel fiber is The weight ratio is 100%, the porosity of the heat-resistant layer is 76%, the porosity of the liquid-conducting layer is 82%, and the thickness of the heat-resistant layer accounts for 40% of the total thickness of the heat-resistant layer and the liquid-conducting layer, The weight of the heat-resistant layer accounts for 40% of the total weight of the heat-resistant layer and the liquid-conducting layer. The total thickness of the heat-resistant layer and the liquid-conducting layer is 1.55mm. The total weight of the heat-resistant layer and the liquid-conducting layer is 250g. /m ² .

Comparative example 1

This comparative example provides a fiber composite material. The difference between its preparation method and Example 1 is that polyimide fiber is not added in step 1), and the amount of Tencel fiber added is 1000kg.

Comparative example 2

This comparative example provides a fiber composite material. The difference between its preparation method and Example 1 is that Tencel fiber is not added in step 1), and the amount of polyimide fiber added is 1000kg.

Comparative example 3

This comparative example provides a fiber composite material. Compared with Example 1, its preparation method differs in that no liquid-conducting layer is provided, and the preparation method includes the following steps:

2) The heat-resistant layer is semi-formed into a fiber web and sent to a forward needle punching machine for repeated needle punching, and then through a reverse needle punching machine for needle punching. In the forward punching step, the needle density of the needle plate is 12,000 pieces/meter. The acupuncture frequency is 1200 piercings/minute, the acupuncture depth is 1.3mm; the needle density of the needle plate in the barbbing step is 14000 pieces/meter, the acupuncture frequency is 1300 piercings/minute, the acupuncture depth is 1.3mm, and then through three The roller hot rolling machine performs hot rolling, controlling the vehicle speed to 20 meters/minute, the roller spacing to 1.3mm, and the hot rolling temperature to 180°C. After the hot rolling is completed, the rolled material is wound to form a coil, and the fiber composite material is obtained.

Test example 1

The average pore diameter and porosity of the fiber composite materials obtained in the above embodiments were tested respectively, where:

Average pore size test: Cut the fiber composite material into five circles with a diameter of 1.5cm, and fully soak them in surfactant GQ16 (manufacturer Nanjing Gaoqian Functional Materials Technology Co., Ltd., surface tension is 16×10 ^-3 N/m) After 30 minutes, put the above-mentioned round sample face up into the test slot of the capillary flow porosity tester. After tightening the cover of the slot, perform the test (only 1 sample per time). The average value of the test sample For pore diameter, take the average of the test results of 5 samples.

Porosity test: Use the n-butanol impregnation method. Weigh the fiber composite material dried to constant weight m ₀ , then immerse it in n-butanol (analytically pure grade) for 12 hours, take it out, and use filter paper to absorb the front and back of the composite material. The liquid on the surface is weighed m ₁ and the porosity of the fiber composite material is calculated. Among them, δ=(m ₁ -m ₀ )/ρV×100%, δ is the porosity, ρ is the density of n-butanol, and V is the apparent volume of the fiber composite material.

The test results are shown in Table 1.

Table 1

	平均孔径(μm)Average pore size (μm)	孔隙率(％)Porosity(%)
实施例1Example 1	5454	6868
实施例2Example 2	4848	6262
实施例3Example 3	5555	7171
实施例4Example 4	5959	7474
实施例5Example 5	6363	7979
实施例6Example 6	7070	9090
实施例7Example 7	6565	8181
实施例8Example 8	5757	7373
实施例9Example 9	5454	7070
实施例10Example 10	5454	6969
实施例11Example 11	5656	7272
实施例12Example 12	5757	7474
实施例13Example 13	4242	7878
实施例14Example 14	5454	8080

Test example 2

The oil storage performance, oil locking performance and oil conductivity performance of the fiber composite materials obtained in the above embodiments and comparative examples were tested respectively, where:

Oil storage performance test:

Cut the fiber composite material into 7mm × 60mm size, 4 pieces in quantity, place it in a standard environment (temperature 20°C, relative humidity 65%) to balance for 24 hours, weigh it, and then compress it to the specified thickness (1.1mm) through the jig. ), and then soaked in e-liquid (Apple e-liquid: nicotine content 0mg, solvent is propylene glycol and glycerin, volume ratio is 50/50) for 50 minutes, take out the suspension and drain for 10 minutes, and slowly remove the fiber composite material from the fixture Take it out, weigh it, calculate the oil storage performance per unit mass of the fiber composite material through the mass difference, and find the average value, the unit is g/g, which represents the mass of oil storage per gram of fiber composite material.

Oil locking performance test:

Cut the fiber composite material into 7mm × 60mm size, 4 pieces in quantity, place it in a standard environment (temperature 20°C, relative humidity 65%) to balance for 24 hours, weigh it, and then compress it to the specified thickness (1.1mm) through the jig. ), and then soaked in e-liquid (Apple e-liquid: nicotine content 0mg, solvent is propylene glycol and glycerin, volume ratio is 50/50) for 50 minutes, take out the suspension and drain for 10 minutes, place the fixture in a freeze-drying centrifuge Centrifuge in the machine (20°C, 500 rpm) for 15 minutes, take out the fixture, slowly take out the fiber composite material from the fixture, weigh it, calculate the oil locking performance of the fiber composite material per unit mass through the mass difference, and calculate the average Value, unit is g/g, indicating the mass of oil locked per gram of fiber composite material.

Oil conductivity performance test:

Cut the fiber composite material into 7mm × 60mm size, 4 pieces in quantity, place it in a standard environment (temperature 20°C, relative humidity 65%) to balance for 24 hours, then compress the entire fiber composite material to the specified thickness (1.1mm) through the jig, and then vertically Hang the fixture directly in the liquid conduction tester; place 10ml of e-liquid (Apple e-liquid: nicotine content 0mg, solvent is propylene glycol and glycerol, volume ratio 50/50) on the liquid conduction tester platform, and rise slowly Platform, when the lower end of the fixture just touches the e-liquid, it stops rising and starts timing; the fiber composite material actively absorbs the e-liquid through capillary force and e-liquid affinity, and its weight continues to increase over time, and the fiber composite material is recorded. Calculate the average value of the weight change at 100s as the oil conductivity of the fiber composite material. The unit is g/100s, which represents the oil conductivity quality of the fiber composite material at 100s.

The test results are shown in Table 2.

Table 2

	储油性(g/g)Oil storage (g/g)	锁油性(g/g)Oil locking ability (g/g)	导油性(g/100s)Oil conductivity (g/100s)
实施例1Example 1	4.904.90	2.982.98	0.37960.3796
实施例2Example 2	4.294.29	2.572.57	0.31040.3104
实施例3Example 3	5.065.06	3.153.15	0.38240.3824
实施例4Example 4	5.575.57	3.413.41	0.42370.4237
实施例5Example 5	5.905.90	3.643.64	0.44610.4461
实施例6Example 6	6.136.13	3.773.77	0.49960.4996
实施例7Example 7	5.495.49	3.383.38	0.44520.4452
实施例8Example 8	5.045.04	3.033.03	0.39740.3974
实施例9Example 9	4.864.86	2.952.95	0.36010.3601
实施例10Example 10	4.814.81	2.842.84	0.36030.3603
实施例11Example 11	5.145.14	3.073.07	0.39540.3954
实施例12Example 12	5.275.27	3.253.25	0.41010.4101
实施例13Example 13	5.325.32	3.583.58	0.42260.4226
实施例14Example 14	5.305.30	3.693.69	0.44260.4426
对比例1Comparative example 1	5.245.24	3.353.35	0.29040.2904
对比例2Comparative example 2	2.262.26	1.311.31	0.13250.1325
对比例3Comparative example 3	3.073.07	2.052.05	0.21740.2174

Obviously, the above-mentioned embodiments are only examples for clear explanation and are not intended to limit the implementation. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. An exhaustive list of all implementations is neither necessary nor possible. The obvious changes or modifications derived therefrom are still within the protection scope of the present invention.

Claims

A fiber composite material, characterized in that the fiber composite material includes a heat-resistant layer and a liquid-conducting layer arranged in a stack;

The material of the heat-resistant layer includes heat-resistant fiber and hydrophilic fiber, the material of the liquid-conducting layer includes hydrophilic fiber, the heat-resistant fiber includes polyimide fiber, and the hydrophilic fiber includes Tencel fiber.
The fiber composite material according to claim 1, characterized in that, based on the total weight of the heat-resistant layer material, the weight proportion of the heat-resistant fiber is 20%-80%, and the weight proportion of the hydrophilic fiber is 20%. -80%.
The fiber composite material according to claim 1 or 2, characterized in that the material of the heat-resistant layer and/or liquid-conducting layer further includes high resilience fibers.
The fiber composite material according to any one of claims 1 to 3, wherein the high resilience fiber includes hollow polyester fiber, and further optionally, the hollow polyester fiber is a three-dimensional crimped hollow polyester fiber.
The fiber composite material according to any one of claims 1-4, characterized in that,

The heat-resistant fiber also includes polyphenylene sulfide fiber, aramid fiber, polytetrafluoroethylene fiber, carbon fiber, metal fiber, poly-p-phenylene benzobisoxazole fiber, poly-m-phenylene benzodiimidazole fiber at least one of;

The hydrophilic fiber also includes at least one of cotton fiber, flax fiber, hemp fiber, modal fiber, cupro fiber, bamboo fiber, seaweed fiber, chitosan fiber, and carboxymethyl cellulose fiber;

Based on the total weight of the heat-resistant layer material, the weight proportion of heat-resistant fibers is 19.9%-80%, the weight proportion of hydrophilic fibers is 19.9%-80%, and the weight proportion of high-resilience fibers is 0.1% -20%;

Based on the total weight of the liquid-conducting layer material, the weight proportion of hydrophilic fibers is 50%-99.9%, and the weight proportion of high-resilience fibers is 0.1%-50%.
The fiber composite material according to any one of claims 1 to 5, characterized in that the heat-resistant layer has a porosity of 70%-98%, and the liquid-conducting layer has a porosity of 50%-82%;

Based on the total weight of the heat-resistant layer material, the weight proportion of heat-resistant fibers is 20%-60%, the weight proportion of hydrophilic fibers is 20%-60%, and the weight proportion of high-resilience fibers is 10% -20%;

Based on the total weight of the liquid-conducting layer material, the weight proportion of hydrophilic fibers is 80%-90%, and the weight proportion of high-resilience fibers is 10%-20%.
The fiber composite material according to any one of claims 1-6, characterized in that,

The thickness of the heat-resistant layer accounts for 30%-60% of the total thickness of the heat-resistant layer and the liquid conductive layer;

The weight of the heat-resistant layer accounts for 30%-60% of the total weight of the heat-resistant layer and the liquid-conducting layer;

The total thickness of the heat-resistant layer and the liquid-conducting layer is 0.9mm-1.8mm, and the total weight of the heat-resistant layer and the liquid-conducting layer is 180g/m 2 -300g/m 2 .
The fiber composite material according to any one of claims 1 to 7, characterized in that the length of the heat-resistant fiber is 38mm-60mm, the fineness is 0.8D-7.0D, and the length of the hydrophilic fiber is 28mm- 60mm, the fineness is 0.9D-2.5D, the length of the high resilience fiber is 38mm-60mm, and the fineness is 3D-10D.
The fiber composite material according to any one of claims 1 to 8, characterized in that the length of the heat-resistant fiber is 50mm-60mm, the fineness is 0.8D-1D, and the length of the hydrophilic fiber is 50mm-60mm. , the fineness is 0.9D-1.0D.
A method for preparing fiber composite materials according to any one of claims 1 to 9, characterized in that the fiber composite materials are prepared using a needle punching process.
The preparation method according to claim 10, characterized in that it includes the following steps:

1) The heat-resistant layer material is opened, mixed and carded to obtain a single-layer fiber mesh thin layer material, and then several single-layer fiber mesh thin-layer materials are laid together to form a fiber mesh material, and then the fiber mesh material is Needle punching, entanglement and shaping to obtain a heat-resistant layer semi-made into a fiber mesh;

2) The liquid-conducting layer material is opened, mixed and carded to obtain a single-layer fiber mesh thin layer material, and then several single-layer fiber mesh thin-layer materials are laid together to form a fiber mesh material, and then the fiber mesh material is After needle punching and entangling, the liquid-conducting layer is semi-made into a fiber mesh;

3) The heat-resistant layer is semi-formed into a fiber mesh and the liquid-conducting layer is semi-formed into a fiber mesh and are combined together by needling, and then hot-rolled to obtain the fiber composite material.
The preparation method according to claim 11, characterized in that:

The weight of the single-layer fiber mesh thin layer material in step 1) is 5-20g/ m2 , and the thickness of the fiber mesh material is 4-15cm. The acupuncture entanglement and shaping step includes sequentially performing The pre-acupuncture process and the barb process are optional. In the pre-acupuncture process, the needle density of the needle plate is 2000-4000 pieces/meter, the acupuncture frequency is 350-450 pricks/minute, and the acupuncture depth is 1.5- 2.0mm; in the barb process, the needle density of the needle plate is 3000-5000 pieces/meter, the needle punching frequency is 390-500 needles/minute, and the needle punching depth is 1.9-2.5mm;

The weight of the single-layer fiber mesh thin layer material in step 2) is 10-30g/m 2 , and the thickness of the fiber mesh material is 11-16cm. The needle punching and entangling shaping step includes sequentially performing the fiber mesh material Pre-acupuncture process and barb process are optional. In the pre-acupuncture process, the needle density of the needle plate is 2000-4000 pieces/meter, the acupuncture frequency is 400-500 pricks/minute, and the acupuncture depth is 2.0- 2.5mm; in the barb process, the needle density of the needle plate is 3000-5000 pieces/meter, the needle punching frequency is 450-550 needles/minute, and the needle punching depth is 2.5-3.0mm;

The acupuncture step described in step 3) includes a forward pricking step and a barb pricking step. Optionally, in the forward pricking step, the needle density of the needle plate is 10,000-15,000 pieces/meter, and the acupuncture frequency is 1,000-1,400 pricks/minute. The acupuncture depth is 1.0-2.0mm; the needle density of the needle plate in the barbbing step is 12000-16000 pieces/meter, the acupuncture frequency is 1000-1400 piercings/minute, and the acupuncture depth is 0.9-2.5mm;

The hot rolling is carried out by a three-roller ironing machine, the speed is controlled to 20-50 meters/minute, the distance between rollers is 0.9-1.8mm, and the hot-rolling temperature is 160-180°C;

After hot rolling, it also includes the step of winding the fiber composite material to form a coil.
A liquid-conducting element, characterized in that the liquid-conducting element material is the fiber composite material according to any one of claims 1-9 or the fiber composite prepared by the preparation method according to any one of claims 10-12. Material.
A heating component, characterized by comprising the fiber composite material according to any one of claims 1 to 9 and a heating element in contact with the heat-resistant layer.
An atomizer, characterized in that the atomization device has the heating component according to claim 14.
An electronic atomization device, characterized by comprising the atomizer according to claim 15.