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This is all you need to know about organosilicon pressure - sensitive adhesives.(2)

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Classification

  • By Curing Method
    • Peroxide - Initiated Free - Radical Cross - Linking Type: It has high adhesion and excellent high - temperature resistance, and cross - linking curing is achieved through the free - radical reaction initiated by peroxide.
    • Platinum (Pt) - Catalyzed Hydrosilylation Cross - Linking Type: It is mainly composed of vinyl - terminated polysiloxane and MQ silicone resin. Under the action of a platinum catalyst, it undergoes an addition reaction with hydrogen - containing silicone oil to form a high - molecular viscoelastic body. It has a low curing temperature, no by - products, and is pure and non - toxic.
    • Ultraviolet (UV) Radiation Cross - Linking Type: Under the irradiation of ultraviolet light, the photo - initiator in the system generates free radicals, causing the organosilicon polymer to undergo a cross - linking reaction and achieve curing. The curing speed is fast and can be carried out at room temperature.
  • By Form
    • Solvent - Type: Using toluene, xylene, etc. as solvents, components such as organosilicon polymers are dissolved in them. During use, the solvent is volatilized by heating or natural air - drying, so as to have pressure - sensitive adhesion.
    • Heat - Curing Type: Generally, it needs to be heated above 100℃ to cure and form a pressure - sensitive adhesive layer. There is no need for a solvent volatilization process, and the performance of the adhesive layer is more stable after curing.

Application Fields

  • Industrial Field: It is used in the production of splicing tapes, electrical tapes, plasma spraying tapes, machining tapes, etc., and can be used in harsh environments such as high - temperature and chemical corrosion.
  • Electrical Field: In the wave soldering, reflow soldering and tin - passing furnace processes of PCB circuit boards, it is used to protect the gold fingers and insulate electronic components. It can also be used for the wiring of transformers, coils and electrical equipment.
  • Smart Device Field: It is widely used in the preparation of protective films for the electronics industry, providing protection for the transportation, manufacturing and use of precision components. In the display field, it is used for the bonding of various optical materials inside the screen.
  • Medical Field: It can be used to manufacture medical tapes, band - aids, electrode patches, transdermal drug delivery patches and other medical supplies. Taking advantage of its non - toxic, non - irritating and physiologically inert characteristics, it provides patients with a comfortable and safe user experience.
  • Other Fields: It can be used as surface - protecting tapes for automotive, aircraft, machine parts, building reinforcement boards, household appliances, wood products, glass products, plastic products, etc.

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