Conductive Adhesive Tape Product Introduction

Conductive filler:

Metal-based filler :

• Silver powder: silver has excellent electrical conductivity, is the conductive filler in the conductivity of one of the best materials. Silver powder filled conductive adhesive tape has high conductivity and good stability, but the cost is higher. Therefore, silver powder filled conductive adhesive tape is commonly used in high-end electronic equipment, aerospace and other fields that require high conductivity.
• Copper powder: copper conductivity is second only to silver, and the price is relatively low, is a more commonly used conductive filler. Copper powder filled conductive adhesive tape has better conductive properties and cost-effective, but copper in the air is easy to oxidize, may affect the stability of the conductive properties. In order to improve the oxidation resistance of copper powder, copper powder is usually surface treated, such as silver plating, nickel plating and so on.
• Aluminum powder: Aluminum is inexpensive, low density, and has certain conductive properties. Aluminum powder filled conductive adhesive tape is suitable for some of the higher cost and weight requirements, but the conductivity requirements are not particularly stringent occasions, such as ordinary electronic equipment shell of the conductive connection, electrostatic protection, etc..

Carbon filler:

• Conductive carbon black: conductive carbon black is a commonly used carbon-based conductive filler, with low cost, better conductivity, good dispersion and other advantages. Conductive carbon black filled with conductive adhesive tape in some of the conductive performance requirements are not particularly high occasions, such as ordinary electronic equipment within the conductive connection, wire and cable joints wrapped widely used.
• Carbon fiber: carbon fiber has excellent conductivity, high strength and high modulus, is a high-performance conductive filler. Carbon fiber-filled conductive adhesive tape with high electrical conductivity and mechanical strength, suitable for some of the conductivity and mechanical strength have high requirements of the occasion, such as aerospace, high-end electronic equipment. However, the cost of carbon fiber is higher, the processing difficulty is also greater.

Composite materials filler

• two or more conductive filler composite, you can comprehensively utilize the advantages of various fillers to improve the performance of conductive adhesive tape. For example, silver powder and carbon nanotubes for composite, can improve the conductive properties at the same time, reduce costs; metal fibers and resin fibers for composite, can improve the mechanical strength and flexibility of conductive adhesive tape.

Adhesive:

• Pressure-sensitive adhesive: pressure-sensitive adhesive is a kind of adhesive that has viscosity at room temperature and can be tightly adhered to the surface of the object to be adhered to by applying only slight pressure. Pressure-sensitive adhesive has the advantages of easy to use, fast bonding speed, high initial tack, suitable for a variety of conductive adhesive tape products. Common pressure-sensitive adhesive acrylate pressure-sensitive adhesive, rubber pressure-sensitive adhesive, etc. 
• Thermosetting adhesive: thermosetting adhesive in the heating or adding curing agent will occur after the chemical reaction, the formation of insoluble and non-melting three-dimensional mesh structure, has a high bonding strength and heat resistance. Thermosetting adhesives are suitable for some of the bonding strength and heat resistance requirements of high occasions, such as high temperature environment of electronic equipment, automotive electronics.
• Hot melt adhesive: hot melt adhesive is a kind of adhesive that melts after heating and cures after cooling. Hot melt adhesive has the advantages of fast bonding speed, environmental protection and no pollution, etc., suitable for some of the higher production efficiency requirements of the occasion, such as mass production of electronic products, packaging, etc.

Other additives:

• Toughening agent: toughening agent can improve the flexibility and impact resistance of conductive adhesive tape and reduce the brittleness of adhesive. Commonly used toughening agents are liquid-end carboxylated nitrile rubber, low molecular polyester, low molecular polyamide, etc. 4.
• Diluent: diluent can adjust the viscosity of conductive adhesive tape, so that it is easy to coat and construction. Commonly used diluents are organic solvents such as acetone, toluene, ethanol, etc., as well as water, etc. 48.
• Antifoam agent: defoamer can eliminate conductive adhesive tape in the production and use of air bubbles, improve the quality and performance of adhesive tape. Commonly used defoamers are silicone defoamer, polyether defoamer, etc. 7.
• Antioxidants: antioxidants can prevent conductive fillers and adhesives in the air is oxidized, improve the stability and service life of conductive adhesive tape. Commonly used antioxidants are phenolic antioxidants, amine antioxidants and so on.