CN115043690A

Movatterモバイル変換

Info

Publication number: CN115043690A
Application number: CN202210499182.6A
Authority: CN
Inventors: 吴立志; 黄晨; 陈乐健; 沈瑞琪; 叶迎华
Original assignee: Nanjing University of Science and Technology
Current assignee: Nanjing University of Science and Technology
Priority date: 2022-05-09
Filing date: 2022-05-09
Publication date: 2022-09-13

Abstract

The invention belongs to the field of initiating explosive device ignition, and particularly relates to a preparation method of a silver ignition bridge based on ink-jet direct writing. The method adopts an ink-jet direct-writing device, the specification of an ink-jet direct-writing injector is 1-5ml, and the method comprises the following steps: step (1): preparing nano silver ink; step (2): filling the nano silver ink into an injector, and extruding the ink on the ceramic substrate to form an ignition bridge with a required shape; and (3): sintering and molding at 200-300 ℃ to prepare the silver ignition bridge with the required shape and size. The method comprises the steps of loading the nano silver ink with optimized formula process on a three-dimensional motion platform through an injector, compiling a computer program according to the shape and size requirements of the silver ignition bridge, controlling the deposition of the three-dimensional motion platform on a ceramic substrate by using the computer program, and preparing the silver ignition bridge through high-temperature sintering; compared with the existing metal ignition bridge preparation process, the process is simple in procedure, high in forming speed and wide in application prospect.

Description

Translated fromChinese

一种基于喷墨直写的银点火桥制备方法A kind of preparation method of silver ignition bridge based on inkjet direct writing

技术领域technical field

本发明属于火工品点火领域，具体涉及一种基于喷墨直写的银点火桥制备方法。The invention belongs to the field of pyrotechnic ignition, in particular to a method for preparing a silver ignition bridge based on inkjet direct writing.

背景技术Background technique

随着现代科学技术的不断发展，在微纳技术推动和先进弹药、引信需求的牵引下，火工品正在从传统的单一功能火工品向具有换能元信息化、结构微型化和系统集成化特征的新一代火工品(Micro-Electro-Mechanical System，MEMS火工品)方向发展。With the continuous development of modern science and technology, driven by the promotion of micro-nano technology and the demand for advanced ammunition and fuzes, pyrotechnics are changing from traditional single-function pyrotechnics to informatization, structural miniaturization and system integration with transducer elements The development of a new generation of explosives with chemical characteristics (Micro-Electro-Mechanical System, MEMS explosives).

现有的磁控溅射法以及光刻法制备的微型金属点火桥制备时间长，均在24小时以上；而通过喷墨直写技术制备的银点火桥成型速度快，仅需要几分钟，应用前景大，能够极大提高点火桥火工品的制备效率。The micro-metal ignition bridges prepared by the existing magnetron sputtering method and photolithography method have a long preparation time, both of which are more than 24 hours; while the silver ignition bridge prepared by the inkjet direct writing technology has a fast forming speed, which only takes a few minutes. It has great prospects and can greatly improve the preparation efficiency of the ignition bridge pyrotechnic products.

发明内容SUMMARY OF THE INVENTION

本发明的目的在于提供一种基于喷墨直写的银点火桥制备方法。The purpose of the present invention is to provide a method for preparing a silver ignition bridge based on inkjet direct writing.

实现本发明目的的技术解决方案为：一种基于喷墨直写的银点火桥制备方法，采用喷墨直写装置，喷墨直写的注射器的规格为1-5ml，包括如下步骤：The technical solution for realizing the object of the present invention is: a method for preparing a silver ignition bridge based on inkjet direct writing, using an inkjet direct writing device, and the specification of the inkjet direct writing syringe is 1-5ml, comprising the following steps:

步骤(1)：制备纳米银墨水；Step (1): prepare nano silver ink;

步骤(2)：将纳米银墨水装入注射器，将墨水挤出在陶瓷基板上形成所需形状的点火桥；Step (2): put the nano-silver ink into the syringe, and extrude the ink on the ceramic substrate to form an ignition bridge of the desired shape;

步骤(3)：在200-300℃下高温烧结成型，制备出所需形状、尺寸的银点火桥。Step (3): sintering at a high temperature of 200-300° C. to form a silver ignition bridge of the desired shape and size.

进一步的，所述纳米银墨水包括纳米银、乙二醇、去离子水、聚乙烯吡咯烷酮。Further, the nano-silver ink includes nano-silver, ethylene glycol, deionized water, and polyvinylpyrrolidone.

进一步的，纳米银墨水中的纳米银质量百分比为30％；聚乙烯吡咯烷酮质量百分比为2-4％，剩余为乙二醇和去离子水，其中乙二醇和去离子水质量比为1：1。Further, the mass percentage of nano-silver in the nano-silver ink is 30%; the mass percentage of polyvinylpyrrolidone is 2-4%, and the rest is ethylene glycol and deionized water, wherein the mass ratio of ethylene glycol and deionized water is 1:1.

进一步的，所述喷墨直写装置还包括三维运动平台，控制器和与运动相匹配的控制程序。Further, the inkjet direct writing device further includes a three-dimensional motion platform, a controller and a control program matched with the motion.

进一步的，步骤(1)将粘结剂PVP加入乙二醇和去离子水溶剂体系中，其中乙二醇：水＝1:1，搅拌并超声30-60min，形成均匀分散的粘结剂体系；Further, step (1) adding the binder PVP into the ethylene glycol and deionized water solvent system, wherein ethylene glycol: water=1:1, stirring and ultrasonicating for 30-60min to form a uniformly dispersed binder system;

将纳米银颗粒加入到粘结剂体系中，超声并搅拌30-60min，形成均匀分散并稳定的纳米银墨水。The nano-silver particles are added to the binder system, ultrasonicated and stirred for 30-60 minutes to form a uniformly dispersed and stable nano-silver ink.

进一步的，步骤(2)中将墨水挤出在陶瓷基板上行成所需形状的点火桥的推墨速度为0.001mm/s-0.005mm/s，针头运动速度为1mm/s-5mm/s。Further, in step (2), the ink pushing speed of the ignition bridge that extrudes the ink on the ceramic substrate to form a desired shape is 0.001mm/s-0.005mm/s, and the needle moving speed is 1mm/s-5mm/s.

一种银点火桥，采用上述的方法制备。A silver ignition bridge is prepared by the above method.

银点火桥的形状为“H”型、“V”型或“蝶”型。The shape of the silver ignition bridge is "H" type, "V" type or "butterfly" type.

本发明与现有技术相比，其显著优点在于：Compared with the prior art, the present invention has the following significant advantages:

(1)本发明中所用的纳米银墨水制备工艺简单，原料易得。(1) The preparation process of the nano-silver ink used in the present invention is simple, and the raw materials are easy to obtain.

(2)通过本发明制备的纳米银墨水稳定性好、分散均匀，能够满足喷墨直写装置对于墨水性能的要求。(2) The nano-silver ink prepared by the invention has good stability and uniform dispersion, and can meet the requirements of inkjet direct writing device for ink performance.

(3)本发明中通过喷墨直写技术制备的银点火桥图形化精度高，能够有效避免材料的浪费。(3) The silver ignition bridge prepared by the inkjet direct writing technique in the present invention has high patterning precision and can effectively avoid the waste of materials.

(4)本发明的银点火桥制备方法相比于现有的制备方法(如光刻法、磁控溅射法等)简单快速。(4) Compared with the existing preparation methods (such as photolithography, magnetron sputtering, etc.), the preparation method of the silver ignition bridge of the present invention is simple and fast.

附图说明Description of drawings

图1为本发明采用的喷墨直写装置示意图。FIG. 1 is a schematic diagram of an inkjet direct writing device adopted in the present invention.

图2为本发明制备的银点火桥实物图；其中(a)为“H”型，(b)为“V”型，(c)为“蝶”型。Fig. 2 is the actual picture of the silver ignition bridge prepared by the present invention; wherein (a) is "H" type, (b) is "V" type, and (c) is "butterfly" type.

图3为银点火桥300℃烧结后的不同倍率下的微观SEM图；其中(a)为1000倍，(b)为5000倍，(c)为10000倍，(d)为30000倍。Figure 3 shows the microscopic SEM images of the silver ignition bridge at different magnifications after sintering at 300°C; (a) is 1000 times, (b) is 5000 times, (c) is 10,000 times, and (d) is 30,000 times.

图4为本发明成功电爆的银点火桥高速摄影图像。FIG. 4 is a high-speed photographic image of a silver ignition bridge successfully electrically exploded in the present invention.

具体实施方式Detailed ways

下面结合附图对本发明作进一步详细描述。The present invention will be described in further detail below with reference to the accompanying drawings.

一种基于喷墨直写技术的银点火桥制备方法，利用喷墨直写装置通过计算机软件控制将纳米银墨水按照一定轨迹直写在陶瓷基板上，并采用200-300℃高温烧结，形成特定形状和尺寸的银点火桥换能元。包括如下步骤：A method for preparing a silver ignition bridge based on inkjet direct writing technology, using an inkjet direct writing device to directly write nano silver ink on a ceramic substrate according to a certain trajectory through computer software control, and sintering at a high temperature of 200-300 ℃ to form a specific Silver ignition bridge transducers in shape and size. It includes the following steps:

步骤1：将按比例配置好的纳米银墨水搅拌30-60min并超声分散30-60min；Step 1: stir the nano-silver ink prepared in proportion for 30-60min and ultrasonically disperse it for 30-60min;

步骤2：将准备好的纳米银墨水装入1-5ml的一次性注射器中，固定在喷墨直写装置上的三维运动平台上。根据银点火桥的尺寸以及形状要求，编写计算机程序，利用计算机软件控制墨水运动轨迹，将墨水均匀推出，并利用挤出推墨的方式控制墨水的出墨速度，使墨水沉积在陶瓷基板上形成一定形状并在200-300℃下高温烧结成型，制备出特定形状特定尺寸的银点火桥。优化后的直写参数为：推墨速度为0.001mm/s-0.005mm/s，针头运动速度为1mm/s-5mm/s；Step 2: Load the prepared nano-silver ink into a 1-5ml disposable syringe and fix it on the three-dimensional motion platform on the inkjet direct writing device. According to the size and shape requirements of the silver ignition bridge, write a computer program, use the computer software to control the ink movement trajectory, push the ink out evenly, and use the extrusion method to control the ink ejection speed of the ink, so that the ink is deposited on the ceramic substrate. A certain shape and a high temperature sintering at 200-300 ° C are formed to prepare a silver ignition bridge with a specific shape and a specific size. The optimized direct writing parameters are: the ink pushing speed is 0.001mm/s-0.005mm/s, and the needle movement speed is 1mm/s-5mm/s;

所述纳米银墨水包括纳米银、乙二醇、去离子水、聚乙烯吡咯烷酮(分子量85w)，所用纳米银质量百分比为30％；所用溶剂为乙二醇、去离子水质量比1：1；所用分散剂聚乙烯吡咯烷酮质量百分比为2-4％。The nano-silver ink includes nano-silver, ethylene glycol, deionized water, polyvinylpyrrolidone (molecular weight 85w), and the mass percentage of nano-silver used is 30%; the solvent used is ethylene glycol and deionized water in a mass ratio of 1:1; The mass percentage of the used dispersant polyvinylpyrrolidone is 2-4%.

实施例Example

步骤1：将质量分数为3％的粘结剂PVP加入到质量分数为67％的乙二醇和去离子水溶剂体系中，其中乙二醇：水＝1:1，搅拌并超声30-60min，形成均匀分散的粘结剂体系；Step 1: Add the binder PVP with a mass fraction of 3% into a 67% mass fraction of ethylene glycol and deionized water solvent system, wherein ethylene glycol: water = 1:1, stir and ultrasonicate for 30-60min, Form a uniformly dispersed binder system;

步骤2：将质量分数为30％的纳米银颗粒加入到粘结剂体系中，超声并搅拌30-60min，形成均匀分散并稳定的纳米银墨水；Step 2: adding the nano-silver particles with a mass fraction of 30% into the binder system, ultrasonically and stirring for 30-60min to form a uniformly dispersed and stable nano-silver ink;

步骤3：将准备好的纳米银墨水装入1-5ml的一次性注射器中，固定在喷墨直写装置上的三维运动平台上。根据银点火桥的尺寸以及形状要求，编写计算机程序，利用计算机软件控制墨水运动轨迹，将墨水均匀推出，并利用挤出推墨的方式控制墨水的出墨速度，其中推墨速度控制为0.003mm/s，针头运动速度为3mm/s，使墨水沉积在陶瓷基板上形成一定形状并在200-300℃下高温烧结成型，制备出特定形状特定尺寸的银点火桥，具体实物图如图2所示。Step 3: Load the prepared nano-silver ink into a 1-5ml disposable syringe, and fix it on the three-dimensional motion platform on the inkjet direct writing device. According to the size and shape requirements of the silver ignition bridge, write a computer program, use computer software to control the trajectory of the ink, push the ink out evenly, and control the ink ejection speed by squeezing the ink, and the ink ejecting speed is controlled at 0.003mm /s, the needle movement speed is 3mm/s, so that the ink is deposited on the ceramic substrate to form a certain shape and sintered at a high temperature of 200-300 ° C to form a silver ignition bridge with a specific shape and size. The specific physical picture is shown in Figure 2. Show.

图3为300℃下烧结的银点火桥微观图像，可以看出纳米银颗粒有效连接在一起，形成了优良的导电网络。图4为制备的银点火桥成功电爆、生成等离子体的高速摄影图像，表明本发明制备的点火桥可以满足火工品的点火或起爆需求。Figure 3 is a microscopic image of the silver ignition bridge sintered at 300 °C. It can be seen that the nano-silver particles are effectively connected together to form an excellent conductive network. FIG. 4 is a high-speed photographic image of the prepared silver ignition bridge successfully electrically exploded and plasma generated, indicating that the ignition bridge prepared by the present invention can meet the ignition or detonation requirements of the pyrotechnic product.

Claims

Translated fromChinese

1.一种基于喷墨直写的银点火桥制备方法，其特征在于，采用喷墨直写装置，喷墨直写的注射器的规格为1-5ml，包括如下步骤：1. a silver ignition bridge preparation method based on inkjet direct writing, is characterized in that, adopts inkjet direct writing device, and the specification of the syringe of inkjet direct writing is 1-5ml, comprises the steps:

步骤(1)：制备纳米银墨水；Step (1): prepare nano silver ink;

2.根据权利要求1所述的方法，其特征在于，所述纳米银墨水包括纳米银、乙二醇、去离子水、聚乙烯吡咯烷酮。2 . The method according to claim 1 , wherein the nano-silver ink comprises nano-silver, ethylene glycol, deionized water, and polyvinylpyrrolidone. 3 .

3.根据权利要求2所述的方法，其特征在于，纳米银墨水中的纳米银质量百分比为30％；聚乙烯吡咯烷酮质量百分比为2-4％，剩余为乙二醇和去离子水，其中乙二醇和去离子水质量比为1：1。3. method according to claim 2, is characterized in that, the mass percentage of nano silver in the nano silver ink is 30%; The mass percentage of polyvinylpyrrolidone is 2-4%, and the remainder is ethylene glycol and deionized water, wherein ethylene glycol The mass ratio of glycol and deionized water was 1:1.

4.根据权利要求3所述的方法，其特征在于，所述喷墨直写装置还包括三维运动平台，控制器和与运动相匹配的控制程序。4. The method according to claim 3, wherein the inkjet direct writing device further comprises a three-dimensional motion platform, a controller and a control program matched with the motion.

5.根据权利要求4所述的方法，其特征在于，步骤(1)将粘结剂PVP加入到乙二醇和去离子水溶剂体系中，其中乙二醇：水＝1:1，搅拌并超声30-60min，形成均匀分散的粘结剂体系；5. method according to claim 4, is characterized in that, step (1) joins binder PVP in ethylene glycol and deionized water solvent system, wherein ethylene glycol: water=1:1, stir and ultrasonic 30-60min to form a uniformly dispersed binder system;

6.根据权利要求5所述的方法，其特征在于，步骤(2)中将墨水挤出在陶瓷基板上行成所需形状的点火桥的推墨速度为0.001mm/s-0.005mm/s，针头运动速度为1mm/s-5mm/s。6. The method according to claim 5, wherein in step (2), the ink pushing speed of the ignition bridge of the desired shape by extruding the ink on the ceramic substrate is 0.001mm/s-0.005mm/s, The needle movement speed is 1mm/s-5mm/s.

7.一种银点火桥，其特征在于，采用权利要求1-6任一项所述的方法制备。7. A silver ignition bridge, characterized in that, prepared by the method of any one of claims 1-6.

8.根据权利要求7所述的银点火桥，其特征在于，银点火桥的形状为“H”型、“V”型或“蝶”型。8. The silver ignition bridge according to claim 7, wherein the shape of the silver ignition bridge is "H" type, "V" type or "butterfly" type.