WO2023023906A1 - 碳纤维增益陶瓷雾化芯及其制备方法 - Google Patents

碳纤维增益陶瓷雾化芯及其制备方法 Download PDF

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WO2023023906A1
WO2023023906A1 PCT/CN2021/114133 CN2021114133W WO2023023906A1 WO 2023023906 A1 WO2023023906 A1 WO 2023023906A1 CN 2021114133 W CN2021114133 W CN 2021114133W WO 2023023906 A1 WO2023023906 A1 WO 2023023906A1
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carbon fiber
parts
atomizing core
ceramic
ceramic atomizing
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PCT/CN2021/114133
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English (en)
French (fr)
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陈平
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深圳市安芯精密组件有限公司
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Priority to KR1020227030258A priority Critical patent/KR20230033635A/ko
Priority to EP21954458.2A priority patent/EP4215073A4/en
Priority to PCT/CN2021/114133 priority patent/WO2023023906A1/zh
Priority to US18/032,345 priority patent/US20230391679A1/en
Publication of WO2023023906A1 publication Critical patent/WO2023023906A1/zh

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Definitions

  • the invention relates to the technical field of atomization, in particular to a carbon fiber-enhanced ceramic atomization core and a preparation method thereof.
  • the technical problem to be solved by the present invention is to provide a carbon fiber-enhanced ceramic atomizing core and a preparation method thereof in view of the above-mentioned defects in the prior art.
  • the technical solution adopted by the present invention to solve the technical problem is: provide a carbon fiber gain ceramic atomizing core, including raw materials and their mass parts as follows: 30-70 parts of ceramic powder, 1-10 parts of carbon fiber, 10 parts of sintering aid -50 parts and pore former 0-30 parts.
  • the ceramic powder includes one or more of talc, zeolite, sepiolite, fused silica sand, mullite and wizard stone; the particle size of the ceramic powder is 100 mesh to 2000 mesh.
  • the carbon fibers are activated carbon fibers carbonized at 1100°C-1200°C, with a length of 0.05mm-1mm.
  • the sintering aid includes one or more of feldspar, mica, and low-melting glass powder, and the particle size of the sintering aid is 200 mesh to 2000 mesh.
  • the pore-forming agent includes one or more of wheat flour, CMC, PMMA, and carbon powder, and the particle size of the pore-forming agent is 200 mesh-1500 mesh.
  • the carbon fiber gain ceramic atomizing core also includes 20-40 parts of paraffin wax.
  • the present invention also provides a method for preparing a carbon fiber-gained ceramic atomizing core, comprising the following steps:
  • the raw materials After mixing and stirring the ceramic powder, carbon fiber, sintering aid and pore-forming agent according to the required mass parts, the raw materials are pressed and formed into a green body;
  • the compression molding method is hot die casting or dry pressing.
  • the raw material when the compression molding method is hot die casting, the raw material also includes paraffin wax.
  • the sintering atmosphere is air, vacuum or an inert gas atmosphere.
  • the carbon fiber gain ceramic atomizing core of the present invention through the addition of carbon fiber, makes the atomizing core have a columnar channel, similar to the straight-through channel of cotton core fiber accumulation, improves the oil guiding and oil locking ability of the atomizing core, and improves the atomizing core. Excellent atomization effect and taste; carbon fiber can also form a bridge around the hole, which has a toughening effect and improves the strength of the atomization core.
  • Fig. 1, Fig. 2 are the SEM figures under different multiples of the carbon fiber gain ceramic atomizing core obtained by sintering under air atmosphere respectively in the present invention
  • Fig. 3 is a partially enlarged schematic diagram of carbon fibers after sintering in Fig. 2;
  • Fig. 4 is an SEM image of the carbon fiber reinforced ceramic atomizing core obtained by sintering in a vacuum atmosphere in the present invention.
  • the carbon fiber enhanced ceramic atomizing core of the present invention includes raw materials and their mass parts as follows: 30-70 parts of ceramic powder, 1-10 parts of carbon fiber, 10-50 parts of sintering aid and 0-30 parts of pore-forming agent.
  • the ceramic powder may include one or more of talc, zeolite, sepiolite, fused silica sand, mullite and wizard stone (belonging to natural ore).
  • the particle size of the ceramic powder is 100 mesh-2000 mesh.
  • Carbon fibers are activated carbon fibers formed by carbonizing carbon-containing fibers at 1100°C-1200°C, and the length of the carbon fibers added in the present invention is 0.05mm-1mm.
  • carbon fiber For conventional carbon fiber, it is a special fiber (including carbon fiber) composed of carbon elements, which has the characteristics of high temperature resistance, friction resistance, electrical conductivity, heat conduction and corrosion resistance, and its appearance is fibrous, soft, and can be processed into various fabrics , due to the preferred orientation of its graphite microcrystalline structure along the fiber axis, it has high strength and modulus along the fiber axis.
  • Activated carbon fibers are activated carbon-containing fibers, which are carbon-containing fibers (such as phenolic-based fibers, PAN-based fibers, viscose-based fibers, pitch-based fibers, etc.) Nano-scale pores are produced on the surface, increasing the specific surface area, thereby changing its physical and chemical properties.
  • the sintering aid includes one or more of feldspar, mica, low-melting point glass powder, etc.; the particle size of the sintering aid is 200-2000 mesh.
  • the pore-forming agent includes one or more of wheat flour, CMC (sodium carboxymethyl cellulose), PMMA (polymethyl methacrylate), carbon powder, etc.; the particle size of the pore-forming agent is 200 mesh-1500 mesh.
  • the carbon fiber-enhanced ceramic atomizing core of the present invention further includes 20-40 parts of paraffin wax (parts by mass).
  • paraffin wax parts by mass
  • the preparation method of the carbon fiber gain ceramic atomizing core of the present invention may comprise the following steps:
  • hot die casting molding can be used, and dry pressing molding can also be used.
  • paraffin wax For the method of hot die casting, 20-40 parts of paraffin wax is added to the raw material.
  • the atmosphere is air, vacuum or inert gas (such as nitrogen or argon, etc.) atmosphere.
  • the partially burned carbon fiber will leave a columnar channel in the ceramic matrix, which is similar to the straight-through channel of the cotton core fiber accumulation.
  • the burnt carbon fiber will form a bridge around the columnar channel, which acts like a reinforcing rib in the ceramic matrix, increasing the strength of the ceramic matrix.
  • the formation of multiple columnar channels makes the ceramic matrix have a porous structure, and also increases the oil-conducting and oil-locking capabilities of the ceramic matrix.
  • Figure 1- Figure 2 the SEM images of the atomizing core obtained by conventional air atmosphere sintering are shown in Figure 1- Figure 2. From the figure, it can be seen that some carbon fibers are oxidized and decomposed, leaving a cotton core in the ceramic matrix. columnar channels.
  • Figure 3 is a local characterization diagram of the sintered carbon fiber. It can be seen that the surface of the sintered carbon fiber is oxidized, and the interior is a porous structure.
  • the SEM image of the atomizing core obtained by sintering in a vacuum atmosphere is shown in Figure 4. It can be seen from the figure that the carbon fiber is less oxidized in a vacuum environment (less than that in an air atmosphere), and is evenly distributed in the atomizing core In the matrix, the ceramic particles are bridged to each other, and the strength of the matrix is improved while ensuring high porosity.
  • the preparation method of the carbon fiber reinforced ceramic atomizing core of the present invention is not limited to the above-mentioned hot die casting or dry pressing, and other molding methods for preparing the atomizing core can be used.
  • Embodiment 6 is a diagrammatic representation of Embodiment 6
  • Embodiment 7 is a diagrammatic representation of Embodiment 7:
  • Embodiment 8 is a diagrammatic representation of Embodiment 8
  • Embodiment 9 is a diagrammatic representation of Embodiment 9:
  • Example 1 Without adding carbon fiber, the rest is the same as Example 1.
  • Example 1 57 57 60
  • Example 2 54
  • Example 3 56
  • Example 4 52
  • Example 5 50
  • Example 5 50
  • 49 63
  • Example 6 56
  • Example 7 53
  • Example 8 56
  • Example 9 58
  • Example 10 60
  • Comparative example 1 53
  • 49 45
  • Comparative example 2 55
  • the atomization core of the present invention has significantly increased porosity and hardness due to the addition of carbon fibers, and can have higher porosity and higher hardness at the same time.

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Abstract

本发明公开了一种碳纤维增益陶瓷雾化芯及其制备方法，碳纤维增益陶瓷雾化芯包括原料及其质量份数如下：陶瓷粉体30-70份、碳纤维1-10份、助烧剂10-50份以及造孔剂0-30份。本发明的碳纤维增益陶瓷雾化芯，通过碳纤维的加入，使雾化芯具有柱状孔道，类似于棉芯纤维堆积的直通式孔道，提高雾化芯的导油和锁油能力，提高雾化芯的雾化效果及口感；碳纤维还可在孔道周围形成架接，具有增韧作用，提高雾化芯的强度。

Description

碳纤维增益陶瓷雾化芯及其制备方法 技术领域
本发明涉及雾化技术领域，尤其涉及一种碳纤维增益陶瓷雾化芯及其制备方法。
背景技术
自雾化产品问世以来，其雾化芯也随着雾化行业的发展而不断改进，但目前所用的雾化芯主要是棉芯和陶瓷芯，棉芯有着陶瓷芯目前无法比拟的口感，而陶瓷芯却比棉芯一致性更好。陶瓷芯作为新生代雾化芯，其口感和强度一直是陶瓷雾化芯难以逾越的一个技术难点，极大程度上限制了陶瓷雾化芯的发展。
发明内容
本发明要解决的技术问题在于，针对上述提出的现有技术存在的缺陷，提供一种碳纤维增益陶瓷雾化芯及其制备方法。
本发明解决其技术问题所采用的技术方案是：提供一种碳纤维增益陶瓷雾化芯，包括原料及其质量份数如下：陶瓷粉体30-70份、碳纤维1-10份、助烧剂10-50份以及造孔剂0-30份。
优选地，所述陶瓷粉体包括滑石、沸石、海泡石、熔融石英砂、莫来石及奇才石中一种或多种；所述陶瓷粉体的粒度为100目-2000目。
优选地，所述碳纤维是在1100℃-1200℃下碳化而成的活性碳纤维，其长度为0.05mm-1mm。
优选地，所述助烧剂包括长石、云母、低熔点玻璃粉中的一种或多种，所述助烧剂的粒度为200目-2000目。
优选地，所述造孔剂包括小麦粉、CMC、PMMA、碳粉中的一种或多种，所述造孔剂的粒度为200目-1500目。
优选地，所述碳纤维增益陶瓷雾化芯还包括石蜡20-40份。
本发明还提供一种碳纤维增益陶瓷雾化芯的制备方法，包括以下步骤：
S1、按所需质量份数将陶瓷粉体、碳纤维、助烧剂以及造孔剂各原料混合搅拌均匀后，压制成型为坯体；
S2、将所述坯体置于500℃-900℃下进行烧结，得到碳纤维增益陶瓷雾化芯。
优选地，步骤S1中，所述压制成型的方式为热压铸或干压。
优选地，所述压制成型的方式为热压铸时，所述原料还包括石蜡。
优选地，步骤S2中，烧结的气氛为空气、真空或者惰性气体气氛。
本发明的碳纤维增益陶瓷雾化芯，通过碳纤维的加入，使雾化芯具有柱状孔道，类似于棉芯纤维堆积的直通式孔道，提高雾化芯的导油和锁油能力，提高雾化芯的雾化效果及口感；碳纤维还可在孔道周围形成架接，具有增韧作用，提高雾化芯的强度。
附图说明
下面将结合附图及实施例对本发明作进一步说明，附图中：
图1、图2分别是本发明中在空气气氛下烧结获得的碳纤维增益陶瓷雾化 芯的不同倍数下的SEM图；
图3是图2中烧结后碳纤维局部放大示意图；
图4是本发明中在真空气氛下烧结获得的碳纤维增益陶瓷雾化芯的SEM图。
具体实施方式
本发明的碳纤维增益陶瓷雾化芯，包括原料及其质量份数如下：陶瓷粉体30-70份、碳纤维1-10份、助烧剂10-50份以及造孔剂0-30份。
其中，陶瓷粉体可包括滑石、沸石、海泡石、熔融石英砂、莫来石及奇才石(属于天然矿石)等中一种或多种。陶瓷粉体的粒度为100目-2000目。
碳纤维是将含碳纤维在1100℃-1200℃下碳化而成的活性碳纤维，本发明中加入的碳纤维的长度为0.05mm-1mm。
对于常规的碳纤维，其是由碳元素组成的一种特种纤维(含碳纤维)，具有耐高温、抗摩擦、导电、导热及耐腐蚀等特性，外形呈纤维状、柔软、可加工成各种织物，由于其石墨微晶结构沿纤维轴择优取向，因此沿纤维轴方向有很高的强度和模量。而活性碳纤维是经过活化的含碳纤维，是将含碳纤维(如酚醛基纤维、PAN基纤维、黏胶基纤维、沥青基纤维等)经过高温活化(不同的活化方法活化温度不一样)，使其表面产生纳米级的孔径，增加比表面积，从而改变其物化特性。
助烧剂包括长石、云母、低熔点玻璃粉等中的一种或多种；助烧剂的粒度为200目-2000目。
造孔剂包括小麦粉、CMC(羧甲基纤维素钠)、PMMA(聚甲基丙烯酸甲酯)、碳粉等中的一种或多种；造孔剂的粒度为200目-1500目。
根据需要，例如根据热压铸成型方式所需，本发明的碳纤维增益陶瓷雾化芯还包括石蜡20-40份(质量份数)。对于干压等其他方式，可无需加入石蜡。
本发明的碳纤维增益陶瓷雾化芯的制备方法，可包括以下步骤：
S1、将陶瓷粉体、碳纤维、助烧剂以及造孔剂等原料按所需份数称取后，将所需的原料混合搅拌均匀后，压制成型为坯体。
对于压制成型，可以采用热压铸成型，也可以干压成型。
对于采用热压铸成型的方式，原料中还加入20-40份的石蜡。
S2、将坯体置于烧结炉中，于500℃-900℃下进行烧结，得到碳纤维增益陶瓷雾化芯。
烧结时，其气氛为空气、真空或者惰性气体(如氮气或氩气等)气氛。
坯体在烧结过程中，由于碳纤维的纤维结构，烧结时陶瓷颗粒的堆积和重排，部分烧失的碳纤维会在陶瓷基体中留下柱状孔道，类似于棉芯纤维堆积的直通式孔道，未烧失的碳纤维在柱状孔道周围会形成架接的状态，在陶瓷基体中起到类似于加强筋的作用，使陶瓷基体强度升高。多个柱状孔道的形成使得陶瓷基体具有多孔结构，也加大了陶瓷基体的导油和锁油能力。
上述制备方法中，通过常规的空气气氛烧结获得的雾化芯，其SEM图如图1-图2所示，从图中可知，部分碳纤维经氧化分解，在陶瓷基体中留下类似于棉芯的柱状孔道。图3为烧结后碳纤维局部表征图，可知烧结后碳纤维表面氧化，内部为多孔结构，不仅增韧了陶瓷基体，多孔结构也使雾化芯的导油和锁油能力大大提升。
通过真空气氛烧结获得的雾化芯，其SEM图如图4所示，从图中可知，在真空环境下碳纤维氧化较少(较于空气气氛下的少)，且均匀分布于雾化芯 的基体中，使陶瓷颗粒之间形成架接的状态，在确保高孔隙率的同时，提高基体的强度。
另外，可以理解地，本发明的碳纤维增益陶瓷雾化芯的制备方法不限于上述热压铸或干压，其他成型制备雾化芯的方法均可采用。
以下通过具体实施例对本发明作进一步说明。
实施例1：
将海泡石18份、熔融石英砂48份、低熔点玻璃粉34份、小麦粉24份、1mm的碳纤维5份，与30份石蜡混合均匀后，热压铸成型，在680℃下烧结(空气气氛下)，获得碳纤维增益陶瓷雾化芯。
实施例2：
采用0.15mm的碳纤维，其余与实施例1相同。
实施例3：
于真空气氛下烧结，其余与实施例1相同。
实施例4：
将奇才石30份、熔融石英砂40份、低熔点玻璃粉30份、1mm碳纤维3份，与30份石蜡混合均匀后，热压铸成型，在680℃下烧结(空气气氛下)，获得碳纤维增益陶瓷雾化芯。
实施例5：
采用0.15mm的碳纤维，其余与实施例4相同。
实施例6：
将沸石50份、低熔点玻璃粉50份、1mm碳纤维3份，与25份石蜡混合均匀后，热压铸成型，在680℃下烧结(空气气氛下)，获得碳纤维增益陶瓷 雾化芯。
实施例7：
采用0.15mm的碳纤维，其余与实施例6相同。
实施例8：
将奇才石66份、低熔点玻璃粉34份、小麦粉24份、1mm碳纤维5份，与25份石蜡混合均匀后，热压铸成型，在680℃下烧结(空气气氛下)，获得碳纤维增益陶瓷雾化芯。
实施例9：
采用1mm碳纤维3份和0.15mm碳纤维3份，其余与实施例1相同。
实施例10：
将滑石粉58份、莫来石20份、长石粉粉12份、锂云母10份、小麦粉20份、1mm碳纤维5份，与25份石蜡混合均匀后，热压铸成型，在680℃下烧结(空气气氛下)，获得碳纤维增益陶瓷雾化芯。
实施例11：
采用0.15mm的碳纤维，其余与实施例10相同。
比较例1：
不添加碳纤维，其余与实施例1相同。
比较例2：
不添加碳纤维，其余与实施例10相同。
对上述实施例1-11及比较例1、2获得的雾化芯，根据阿基米德排水法测试孔隙率等，结果如下表1所示。
表1
实施例 孔隙率/％ 吸水率/％ 硬度/MPa
实施例1 57 57 60
实施例2 54 52 55
实施例3 56 55 75
实施例4 52 50 71
实施例5 50 49 63
实施例6 56 55 56
实施例7 53 51 55
实施例8 56 56 62
实施例9 58 58 63
实施例10 60 59 66
实施例11 56 53 59
比较例1 53 49 45
比较例2 55 52 50
由表1数据可以得出，本发明的雾化芯由于添加了碳纤维，孔隙率明显升高，硬度也有较大的提升，能够具有较高孔隙率的同时具有较高的硬度。
以上所述仅为本发明的实施例，并非因此限制本发明的专利范围，凡是利用本发明说明书及附图内容所作的等效结构或等效流程变换，或直接或间接运用在其他相关的技术领域，均同理包括在本发明的专利保护范围内。

Claims (10)

  1. 一种碳纤维增益陶瓷雾化芯，其特征在于，包括原料及其质量份数如下：陶瓷粉体30-70份、碳纤维1-10份、助烧剂10-50份以及造孔剂0-30份。
  2. 根据权利要求1所述的碳纤维增益陶瓷雾化芯，其特征在于，所述陶瓷粉体包括滑石、沸石、海泡石、熔融石英砂、莫来石及奇才石中一种或多种；所述陶瓷粉体的粒度为100目-2000目。
  3. 根据权利要求1所述的碳纤维增益陶瓷雾化芯，其特征在于，所述碳纤维是在1100℃-1200℃下碳化而成的活性碳纤维，其长度为0.05mm-1mm。
  4. 根据权利要求1所述的碳纤维增益陶瓷雾化芯，其特征在于，所述助烧剂包括长石、云母、低熔点玻璃粉中的一种或多种，所述助烧剂的粒度为200目-2000目。
  5. 根据权利要求1所述的碳纤维增益陶瓷雾化芯，其特征在于，所述造孔剂包括小麦粉、CMC、PMMA、碳粉中的一种或多种，所述造孔剂的粒度为200目-1500目。
  6. 根据权利要求1-5任一项所述的碳纤维增益陶瓷雾化芯，其特征在于，所述碳纤维增益陶瓷雾化芯还包括石蜡20-40份。
  7. 一种权利要求1-6任一项所述的碳纤维增益陶瓷雾化芯的制备方法，其特征在于，包括以下步骤：
    S1、按所需质量份数将陶瓷粉体、碳纤维、助烧剂以及造孔剂各原料混合搅拌均匀后，压制成型为坯体；
    S2、将所述坯体置于500℃-900℃下进行烧结，得到碳纤维增益陶瓷雾化 芯。
  8. 根据权利要求7所述的碳纤维增益陶瓷雾化芯的制备方法，其特征在于，步骤S1中，所述压制成型的方式为热压铸或干压。
  9. 根据权利要求8所述的碳纤维增益陶瓷雾化芯的制备方法，其特征在于，所述压制成型的方式为热压铸时，所述原料还包括石蜡。
  10. 根据权利要求7所述的碳纤维增益陶瓷雾化芯的制备方法，其特征在于，步骤S2中，烧结的气氛为空气、真空或者惰性气体气氛。
PCT/CN2021/114133 2021-08-23 2021-08-23 碳纤维增益陶瓷雾化芯及其制备方法 WO2023023906A1 (zh)

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