阅读说明：本技术 一种用于汽车火花塞封接的导体密封剂及其制备方法 (Conductor sealant for sealing automobile spark plug and preparation method thereof ) 是由 尹嘉琦 于 2019-10-10 设计创作，主要内容包括：本发明属于玻璃材料技术领域,具体地说,是一种用于汽车火花塞封接的导体密封剂及其制备方法,其中,玻璃粉与金属粉的比例在1:0.65-1.5之间,其中,金属粉可以采用铁粉、铜粉、铝粉等中的一种或多种混合粉,优选为铜粉,制备方法包括以下步骤：步骤一：配粉,取相等质量的玻璃粉和铜粉待用；步骤二：干混合,将步骤一待用的玻璃粉和铜粉放置于搅拌机内高速搅拌形成混合均匀的混合粉；步骤三：造粒,在经过步骤二形成的混合粉中加入CMC胶液后高速搅拌形成颗粒混合物；步骤四：干燥,将经过步骤三形成的颗粒混合物置于烘烤箱内干燥；步骤五：分级,将干燥后的颗粒混合物放置到分级筛选装置内进行分级,筛选30目至80目之间的颗粒物作为成品。(The invention belongs to the technical field of glass materials, and particularly relates to a conductor sealing agent for sealing an automobile spark plug and a preparation method thereof, wherein the ratio of glass powder to metal powder is 1:0.65-1.5, wherein the metal powder can be one or more mixed powder of iron powder, copper powder, aluminum powder and the like, preferably copper powder, and the preparation method comprises the following steps: the method comprises the following steps: preparing powder, namely taking glass powder and copper powder with equal mass for later use; step two: dry mixing, namely placing the glass powder and the copper powder to be used in the step one into a stirrer to be stirred at a high speed to form uniformly mixed powder; step three: granulating, namely adding CMC glue solution into the mixed powder formed in the second step and then stirring at a high speed to form a granule mixture; step four: drying, namely placing the particle mixture formed in the third step in a baking oven for drying; step five: and (4) grading, namely placing the dried particle mixture into a grading and screening device for grading, and screening particles of 30-80 meshes to obtain a finished product.)

1. A conductor sealing agent for sealing an automobile spark plug is characterized in that the ratio of glass powder to metal powder is 1:0.65-1.5 according to the mass percentage.

2. A conductor sealant for automotive spark plug sealing according to claim 1, wherein said metal powder is copper powder.

3. The conductor sealant for automobile spark plug sealing according to claim 2, wherein the ratio of the glass powder to the copper powder is 1:1 by mass%.

4. A method of preparing a conductor sealant for automotive spark plug sealing according to claim 3, comprising the steps of:

the method comprises the following steps: preparing powder, namely taking glass powder and copper powder with equal mass for later use;

step two: dry mixing, namely placing the glass powder and the copper powder to be used in the step one into a stirrer to be stirred at a high speed to form uniformly mixed powder;

step three: granulating, namely adding CMC glue solution into the mixed powder formed in the second step and then stirring at a high speed to form a granule mixture;

step four: drying, namely placing the particle mixture formed in the third step in a baking oven for drying;

step five: and (4) grading, namely placing the dried particle mixture into a grading and screening device for grading, and screening particles of 30-80 meshes to obtain a finished product.

5. The method for preparing a conductor sealing agent for sealing an automobile spark plug according to claim 4, wherein the steps one to five are all completed under normal temperature and pressure conditions, and the working temperature of the baking oven in the step four is between 40 and 50 ℃.

6. The method for preparing a conductor sealant for sealing an automobile spark plug according to claim 5, wherein the concentration of the CMC glue solution used in the third step is 3.7%, and the weight ratio of the mixed powder to the CMC glue solution is 10: 1-2.

7. The method for preparing a conductor sealant for sealing an automobile spark plug according to claim 6, wherein the CMC glue solution used in the third step is prepared by the following steps: placing CMC powder in purified water, stirring, standing for three days, and stirring uniformly before use, wherein the mass ratio of the CMC powder to the purified water is 3:80, and the temperature of the purified water is 70-90 ℃.

Technical Field

The invention belongs to the technical field of glass materials, and particularly relates to a conductor sealant for sealing an automobile spark plug and a preparation method thereof.

Background

The glass powder is inorganic cubic hard superfine particle powder, and the appearance of the glass powder is white powder. In the production process, raw materials such as high-temperature high-purity silicon oxide, aluminum oxide and the like are used, and then an ultra-clean production process is carried out to form a glass transparent powder with a disordered structure, and the super-weather-resistant powder material has stable chemical property, acid and alkali resistance, chemical inertia and low expansion coefficient; the anti-scratching high-transparency powder has small particle size, good dispersibility, high transparency and good anti-settling effect; the crystal transparent primer has good affinity and strong steric hindrance ability after surface improvement, can be conveniently dispersed in the coating, can increase the fullness of the coating after film forming, and can keep clear transparency and provide good scratch resistance.

The surface of the conductor device is sensitive and is easily influenced by the surrounding environment, and the electrical property and the stability of the conductor device are changed, so that the use performance of the conductor device is influenced. With the development of conductor technology, the surface treatment of electronic and conductor devices is also receiving more and more attention. The surface of a conductor device needs to be protected, a layer of passivation film is deposited on the surface of the conductor device in a vapor phase mode for protection in the traditional process, and for conductor products with mesa structures, high voltage and high power, the vapor-deposited film is used for protection, so that the conductor products are easy to break down by the high voltage, the stability is poor, and the protection effect is poor. At present, glass powder is used for surface passivation sealing of conductor devices, and the glass powder has higher reverse breakdown voltage, mechanical strength and thermal shock resistance, but the existing glass powder for passivation sealing of conductors cannot effectively improve the weather resistance of passivation sealing materials and can not effectively resist comprehensive damage to the surfaces of the conductor devices caused by illumination, cold and heat, wind and rain, bacteria and the like.

Disclosure of Invention

In order to solve the technical problems, the invention discloses a conductor sealing agent for sealing an automobile spark plug and a preparation method thereof, and the glass powder can effectively resist comprehensive damage to the surface of a conductor device caused by illumination, cold and hot, wind and rain, bacteria and the like.

The invention adopts the following specific technical scheme:

a conductor sealing agent for sealing an automobile spark plug is characterized in that according to the mass percentage, the ratio of glass powder to metal powder is 1:0.65-1.5, namely the content of the glass powder is 40-61%, the ideal ratio is obtained through a plurality of tests, and all performance indexes of the glass powder in the ratio range are excellent; the metal powder may be one or more of iron powder, copper powder, aluminum powder, etc., preferably copper powder, and more preferably, the ratio of the glass powder to the copper powder is 1:1, that is, the content of the glass powder and the copper powder is 50% each.

In the technical scheme, the glass powder has the functions of sealing and bonding, has good air tightness and strength, can resist thermal shock, can bond the conductor and the glass together, bond the metal conductor and the porcelain body together, and bond the metal and the electrode together; the metal powder functions as a conductor.

The invention also discloses a preparation method of the conductor sealant for sealing the automobile spark plug, which comprises the following steps:

the method comprises the following steps: preparing powder, namely taking glass powder and copper powder with equal mass for later use;

step two: dry mixing, namely placing the glass powder and the copper powder to be used in the step one into a stirrer to be stirred at a high speed to form uniformly mixed powder;

step three: granulating, namely adding CMC glue solution into the mixed powder formed in the second step and then stirring at a high speed to form a granule mixture;

step four: drying, namely placing the particle mixture formed in the third step in a baking oven for drying;

step five: and (4) grading, namely placing the dried particle mixture into a grading and screening device for grading, and screening particles of 30-80 meshes to obtain a finished product.

The invention is further improved, the first step to the fifth step are completed under the condition of normal temperature and normal pressure, and the working temperature of the baking box in the fourth step is between 40 and 50 ℃.

The invention is further improved, the concentration of the CMC glue solution used in the step three is 3.7%, the weight ratio of the mixed powder to the CMC glue solution is 10:1-2, namely the content of the mixed powder is 83-91%.

The invention also discloses the preparation of the CMC glue solution used in the third step, which comprises the following steps: placing CMC powder in purified water, stirring, standing for three days, and stirring uniformly before use, wherein the mass ratio of the CMC powder to the purified water is 3:80, and the temperature of the purified water is 70-90 ℃.

The invention has the beneficial effects that: the glass powder can effectively resist the comprehensive damage of illumination, cold and heat, wind and rain, bacteria and the like to the surface of a conductor device, can be suitable for a high-end automobile ignition terminal, and is particularly suitable for airtight and strong sealing between a 95 aluminum oxide magnetic part and a metal screw.

Detailed Description

In order to enhance the understanding of the present invention, the present invention will be described in further detail with reference to the following examples, which are provided for the purpose of illustration only and are not intended to limit the scope of the present invention.