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How do conductive rubber buttons work? Some knowledge points of conductive rubber

How do conductive rubber buttons work? Some knowledge points of conductive rubber

  • Categories:News Center
  • Time of issue:2021-11-29 17:52
  • Views:

(Summary description)How do conductive rubber buttons work? Some knowledge points of conductive rubber

1、 The working principle of conductive rubber buttons

Conductive rubber buttons have two important conductive principles.

One type is the formation of conductive pathways between conductive particles, which make conductive rubber buttons conductive. The stable contact between particles in the adhesive layer is caused by the curing or drying of the conductive adhesive. Before the conductive adhesive solidifies or dries, conductive particles exist separately in the adhesive and do not come into continuous contact with each other, thus they are in an insulating state. After the conductive adhesive is cured or dried, due to the volatilization of the solvent and the solidification of the adhesive, the volume of the adhesive shrinks, causing the conductive particles to be in a stable and continuous state with each other, thereby demonstrating conductivity.

The tunneling effect causes particles in conductive rubber buttons to form a certain current path. When the directional motion of free electrons in conductive particles is hindered, this obstruction can be considered as a potential energy barrier. According to the concept of quantum mechanics, for a microscopic particle, even if its energy is less than the energy of the potential barrier, it may not only be reflected but also cross the potential barrier. The phenomenon of microscopic particles crossing potential barriers is called penetration effect or tunneling effect. Electrons are microscopic particles, so they may be blocked by the isolation layer between conductive particles. The probability of electrons passing through the isolation layer is related to the thickness of the isolation layer and the difference between the energy of the isolation layer barrier and the energy of the electrons. The smaller the thickness and difference, the greater the probability of electrons passing through the isolation layer. When the thickness of the isolation layer is small to a certain value, electrons can easily pass through this thin isolation layer, making the isolation layer between conductive particles a conductive layer. The conductive layer caused by the tunneling effect can be equivalent to a resistor and a capacitor.

2、 Manufacturing method of conductive rubber buttons

Conductive rubber is an adhesive that has a certain degree of conductivity after curing or drying. It usually consists of matrix resin and conductive fillers, namely conductive particles, which are bonded together through the bonding effect of the matrix resin to form a conductive pathway and achieve conductive connection of the bonded material.

Conductive rubber is mainly composed of resin matrix, conductive particles, dispersant additives, and additives. Currently, the conductive rubber buttons used in the market are mostly filled.

In principle, a variety of adhesives can be used for the resin matrix of type A conductive rubber keys, including epoxy resin, silicone resin, polyimide resin, phenolic resin, polyurethane, acrylic resin and other thermosetting adhesive systems. After curing, these adhesives form a molecular skeleton structure of conductive rubber buttons, providing assurance of mechanical and adhesive properties, allowing conductive filler particles to form channels. Epoxy resin can cure at room temperature or below 150, with rich formula designability. At present, epoxy resin based conductive rubber buttons are mainly used. Conductive rubber button particles are required to have good conductivity, and the particle size should be within an appropriate range. They can be added to the conductive rubber button matrix to form a conductive pathway. Conductive fillers can be powders of gold, silver, copper, aluminum, zinc, iron, and nickel, graphite, and some conductive compounds. The working principle and manufacturing method of conductive rubber buttons

How do conductive rubber buttons work? Some knowledge points of conductive rubber

(Summary description)How do conductive rubber buttons work? Some knowledge points of conductive rubber

1、 The working principle of conductive rubber buttons

Conductive rubber buttons have two important conductive principles.

One type is the formation of conductive pathways between conductive particles, which make conductive rubber buttons conductive. The stable contact between particles in the adhesive layer is caused by the curing or drying of the conductive adhesive. Before the conductive adhesive solidifies or dries, conductive particles exist separately in the adhesive and do not come into continuous contact with each other, thus they are in an insulating state. After the conductive adhesive is cured or dried, due to the volatilization of the solvent and the solidification of the adhesive, the volume of the adhesive shrinks, causing the conductive particles to be in a stable and continuous state with each other, thereby demonstrating conductivity.

The tunneling effect causes particles in conductive rubber buttons to form a certain current path. When the directional motion of free electrons in conductive particles is hindered, this obstruction can be considered as a potential energy barrier. According to the concept of quantum mechanics, for a microscopic particle, even if its energy is less than the energy of the potential barrier, it may not only be reflected but also cross the potential barrier. The phenomenon of microscopic particles crossing potential barriers is called penetration effect or tunneling effect. Electrons are microscopic particles, so they may be blocked by the isolation layer between conductive particles. The probability of electrons passing through the isolation layer is related to the thickness of the isolation layer and the difference between the energy of the isolation layer barrier and the energy of the electrons. The smaller the thickness and difference, the greater the probability of electrons passing through the isolation layer. When the thickness of the isolation layer is small to a certain value, electrons can easily pass through this thin isolation layer, making the isolation layer between conductive particles a conductive layer. The conductive layer caused by the tunneling effect can be equivalent to a resistor and a capacitor.

2、 Manufacturing method of conductive rubber buttons

Conductive rubber is an adhesive that has a certain degree of conductivity after curing or drying. It usually consists of matrix resin and conductive fillers, namely conductive particles, which are bonded together through the bonding effect of the matrix resin to form a conductive pathway and achieve conductive connection of the bonded material.

Conductive rubber is mainly composed of resin matrix, conductive particles, dispersant additives, and additives. Currently, the conductive rubber buttons used in the market are mostly filled.

In principle, a variety of adhesives can be used for the resin matrix of type A conductive rubber keys, including epoxy resin, silicone resin, polyimide resin, phenolic resin, polyurethane, acrylic resin and other thermosetting adhesive systems. After curing, these adhesives form a molecular skeleton structure of conductive rubber buttons, providing assurance of mechanical and adhesive properties, allowing conductive filler particles to form channels. Epoxy resin can cure at room temperature or below 150, with rich formula designability. At present, epoxy resin based conductive rubber buttons are mainly used. Conductive rubber button particles are required to have good conductivity, and the particle size should be within an appropriate range. They can be added to the conductive rubber button matrix to form a conductive pathway. Conductive fillers can be powders of gold, silver, copper, aluminum, zinc, iron, and nickel, graphite, and some conductive compounds. The working principle and manufacturing method of conductive rubber buttons

  • Categories:News Center
  • Time of issue:2021-11-29 17:52
  • Views:
Information

How do conductive rubber buttons work? Some knowledge points of conductive rubber导电橡胶按键

1、 The working principle of conductive rubber buttons

Conductive rubber buttons have two important conductive principles.

One type is the formation of conductive pathways between conductive particles, which make conductive rubber buttons conductive. The stable contact between particles in the adhesive layer is caused by the curing or drying of the conductive adhesive. Before the conductive adhesive solidifies or dries, conductive particles exist separately in the adhesive and do not come into continuous contact with each other, thus they are in an insulating state. After the conductive adhesive is cured or dried, due to the volatilization of the solvent and the solidification of the adhesive, the volume of the adhesive shrinks, causing the conductive particles to be in a stable and continuous state with each other, thereby demonstrating conductivity.

The tunneling effect causes particles in conductive rubber buttons to form a certain current path. When the directional motion of free electrons in conductive particles is hindered, this obstruction can be considered as a potential energy barrier. According to the concept of quantum mechanics, for a microscopic particle, even if its energy is less than the energy of the potential barrier, it may not only be reflected but also cross the potential barrier. The phenomenon of microscopic particles crossing potential barriers is called penetration effect or tunneling effect. Electrons are microscopic particles, so they may be blocked by the isolation layer between conductive particles. The probability of electrons passing through the isolation layer is related to the thickness of the isolation layer and the difference between the energy of the isolation layer barrier and the energy of the electrons. The smaller the thickness and difference, the greater the probability of electrons passing through the isolation layer. When the thickness of the isolation layer is small to a certain value, electrons can easily pass through this thin isolation layer, making the isolation layer between conductive particles a conductive layer. The conductive layer caused by the tunneling effect can be equivalent to a resistor and a capacitor.

2、 Manufacturing method of conductive rubber buttons

Conductive rubber is an adhesive that has a certain degree of conductivity after curing or drying. It usually consists of matrix resin and conductive fillers, namely conductive particles, which are bonded together through the bonding effect of the matrix resin to form a conductive pathway and achieve conductive connection of the bonded material.

Conductive rubber is mainly composed of resin matrix, conductive particles, dispersant additives, and additives. Currently, the conductive rubber buttons used in the market are mostly filled.

In principle, a variety of adhesives can be used for the resin matrix of type A conductive rubber keys, including epoxy resin, silicone resin, polyimide resin, phenolic resin, polyurethane, acrylic resin and other thermosetting adhesive systems. After curing, these adhesives form a molecular skeleton structure of conductive rubber buttons, providing assurance of mechanical and adhesive properties, allowing conductive filler particles to form channels. Epoxy resin can cure at room temperature or below 150, with rich formula designability. At present, epoxy resin based conductive rubber buttons are mainly used. Conductive rubber button particles are required to have good conductivity, and the particle size should be within an appropriate range. They can be added to the conductive rubber button matrix to form a conductive pathway. Conductive fillers can be powders of gold, silver, copper, aluminum, zinc, iron, and nickel, graphite, and some conductive compounds. The working principle and manufacturing method of conductive rubber buttons

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