Conductive paint is a kind of conductive material that many people are not familiar with in life. However, it can be seen in industry, architecture and some occasions. For most people, they still ask what the conductive paint is. Next, I will give you a detailed introduction.

Classification and performance testing standards for conductive paints (shielding coatings) Precautions for using conductive paint: ① The service life is greatly influenced by environmental factors, such as humidity, temperature difference, sunlight, etc. The above data is for reference only. ② Metal powder type conductive paints are not alcohol resistant. Due to the difference between conductive paint and ordinary paint or varnish, in order to form better conductivity, metal particles inside the conductive paint account for It is difficult to form a strong paint film layer like ordinary varnish or color paint wrapped in resin

First of all, let's understand a phenomenon. When electronic equipment is working, it neither wants to be interfered by external electromagnetic waves, nor does it want to radiate electromagnetic waves to interfere with external equipment, as well as radiation hazards to human body. Therefore, it is necessary to block the propagation path of electromagnetic waves. This is electromagnetic shielding.

The main uses of conductive coatings are as follows: 1. It can be used to protect the space near the antenna, radio station, television station, transmission network or line of the mobile communication system; 2. In stores, laboratories, national defense and research facilities, wireless network data can be prevented from being intercepted (data stealing), and conference rooms or offices can be protected; 3. Protect radar radiation in military facilities or airports; 4. It can prevent incorrect measurement of patients in medical treatment; 5. Protect confidential areas and R & D departments in industry; 6. Block unauthorized non mobile phone calls in prison; 7. It can also be used in data center, technology area, school, children's room, hotel room, hospital area, recording studio, library, church, etc.

I. performance advantages: Shielding coating: stable conductivity, wide coverage, can meet the requirements of customers, can pass the test of testing institutions, many high-end products are shielded by shielding coating. Vacuum plating: poor conductivity, poor coverage, such as corner, column and other places can not be electroplated, so it can not achieve a very ideal shielding effect.

Conductive paint is to add conductive powder such as silver, copper, nickel or graphite into the varnish, so that the obtained paint layer has conductivity. Commonly used varnish is polyurethane or acrylic varnish. In addition, anti precipitation agent and dispersant are often added to reduce the sedimentation rate of conductive powder and make it well dispersed. In order to prevent the oxidation of conductive powder, antioxidants are often added. The commonly used conductive powder is nickel powder. The coating process is as follows:

Precautions for use of silver copper conductive paint: Before use, the paint shall be completely stirred in the paint tank evenly before use. After stirring, the silver copper metal particles are evenly dispersed, and the coating film can achieve the conductivity. After the paint is diluted, it is better to mix it frequently for not less than 5min. Mix it once to achieve the best conductive effect after coating; the diluted product should be used up as soon as possible to avoid For long-term storage, it is easy to precipitate after dilution, but it does not affect the effect of use characteristics after mixing. Protective measures: during use, ensure the working environment is well ventilated and avoid long-term direct Do not pour the paint into the water channel or sewer to pollute the environment.

Conductive paint - as the name implies, it is a kind of paint that can conduct electricity, but it is not the paint itself that can conduct electricity, but the paint film can form a conductive coating layer after drying. The reason why the conductive film layer can conduct electricity is that the film layer is a thin conductive film composed of conductive powder particles or pieces of contact.

Conductive paint is a popular name. There are many products called conductive paint on the market. It can be divided into two categories according to application, conductivity and material. That is, metal conductive paint and non-metal conductive paint. Nonmetallic conductive paint is a kind of common paint which can conduct electricity by adding some additives. Its conductivity is usually in the range of tens of thousands to millions of ohms. Mainly used for anti-static function, such as: floor paint.

Some customers use conductive paint when spraying good measurement of non-conductive or resistance value is very large, what is the reason? The measurement of the conductive paint sprayed on the shell can be done with a general digital multimeter. The conductivity of the sprayed product can be measured only after it is completely dry. Set the multimeter to the 200 Ω position (note that here is the resistance value below 200 Ω). First, put the two positive and negative level probes together tightly and look at the resistance value between the probes after the number is stable. Then test the resistance between two points. The conductivity between two points of the product can be obtained by subtracting the value of the probe from the measured value.

Conductive paint is a kind of paint with good conductivity. When spraying, we have the following process. One. Preparation before spraying conductive paint: (1) gun diameter: 0.5mm? -0.8mm? (2) paint dilution ratio: silver copper conductive paint: diluent = 1:0.5 (weight ratio) II. Construction method of spraying conductive paint:

Anti electromagnetic interference shielding coating. Commonly known as: conductive paint. The conductive paint is a kind of paint with good conductive performance, which uses composite particles such as copper and silver as conductive particles Conductive coating is a kind of special functional coating with the rapid development of modern science and technology. In 1948, the United States issued a patent to make conductive adhesive from silver and epoxy resin, which is the first conductive coating to be disclosed. China also began to research and apply conductive coatings in the 1950s. In recent decades, conductive coatings have been applied in many military and civil industries, such as electronics, electrical appliances, aviation, chemical industry, printing, etc. Accordingly, the theoretical research of conductive coatings has been developed rapidly, and promoted the maturity and perfection of application technology.

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I. performance advantages: Shielding coating: stable conductivity, wide coverage, can meet the requirements of customers, can pass the test of testing institutions, many high-end products are shielded by shielding coating. Vacuum plating: poor conductivity, poor coverage, such as corner, column and other places can not be electroplated, so it can not achieve a very ideal shielding effect. 2. Technical advantages: Shielding coating: the shielding technology is relatively mature with a history of more than 60 years. It was first introduced from western countries and recognized by western countries. It is widely used in the electronic industry. It has passed ROHS certification, providing guarantee for the export of high-end products.

Conductive paint is a kind of paint with good conductive performance, which uses composite particles such as copper and silver as conductive particles. It is a single component, labor-saving, time-saving, convenient, adhesion good, flat, cohesion strong, no loose particles. It can be used for the mobile phone, calculator, precision instrument and other shell internal wall spraying materials with metal and composite materials as the base material.

The water-based electromagnetic shielding coating is an inevitable trend in the development of conductive coatings, because solvent based coatings will volatilize a large number of harmful substances (such as VOC) in the process of use, which will have a harmful impact on the environment and people's physical and mental health. Researchers in some developed countries have found that building coatings, as decorative and protective materials for buildings, contain aromatic, halide, formaldehyde and various toxic volatile organic compounds VOC, which have a great impact on human health. Long term absorption of VOC will lead to fatigue, loss of memory and coordination functions and nervous system diseases.

Instructions 1. Characteristics of base material: the base material must be clean, dry and free of oil stain and release agent. Use alcohol or special solvent to scrub or soak the surface of equipment. 2. Mixing and dilution: before use, it must be stirred evenly to ensure that there is no precipitation. Normal use does not need to be diluted. If it needs to be diluted, it can be diluted to the viscosity required by the construction with boiled oil. The recommended dilution ratio is 2 parts of oil and 1 part of diluent (i.e. 2:1).

NX-201 is a special conductive paint for electroplating produced by our company. Can brush, spray, roll coating on shell, gypsum, wax crafts, silica gel, plastic, other composite materials as the substrate surface plating. It can be dried or dried naturally. After drying and curing, the performance of the paint layer is stable, the surface is fine and smooth, the hardness is high and it is not easy to touch flowers, and the edge of the paint film is neat and free of burrs. After plating, the surface coating is even and beautiful. Reduce all kinds of complex electroplating pretreatment. High production efficiency and cost saving. Coating characteristics Color: Gold Specific gravity: 1.3 ± 0.05 (ASTM d1475-98) Viscosity: thixotropic mixture Solid content: 45 ± 1% Theoretical coverage: 12m2 / kg (film thickness = 13 μ M

Conductive paint is to add conductive powder such as silver, copper, nickel or graphite into the varnish, so that the obtained paint layer has conductivity. Commonly used varnish is polyurethane or acrylic varnish. In addition, anti precipitation agent and dispersant are often added to reduce the sedimentation rate of conductive powder and make it well dispersed. In order to prevent the oxidation of conductive powder, antioxidants are often added. The commonly used conductive powder is nickel powder. The coating process is as follows

matters needing attention: Before use, the paint shall be completely stirred in the paint tank evenly before use. After stirring, the silver copper metal particles are evenly dispersed, and the coating film can achieve the conductivity. After the paint is diluted, it is better to mix it frequently for no less than 5min once to achieve the best conductive effect after coating; the diluted product should be used up as soon as possible to avoid long-term storage, because it is easy to precipitate after dilution, but it will not affect the use characteristics after mixing. Protective measures: during use, ensure that the working environment is well ventilated, avoid long-term direct contact or inhalation, and do not pour the paint into the ditch or sewer to pollute the environment.