Antistatic polyacrylate pressure sensitive adhesive

With the rapid development of electronic technology such as mobile phone, computer and touch display, the integration of electronic materials is becoming higher and higher, microelectronics is becoming more and more precise, more and more electrostatic sensitivity, such as field effect transistor, chip, large-scale integrated circuit and touch screen are more and more sensitive to the harm caused by static electricity.

In the process of processing and use of these electronic materials, it is required to choose the antistatic protective film with surface resistivity below 1010Ω/□ in low humidity environment and with long-lasting antistatic effect. Therefore, it is necessary to develop the pressure sensitive adhesive with good antistatic effect to prepare the antistatic protective film to derive the static electricity generated during the processing of electronic materials.

In order to avoid the electrostatic accumulation during the process of electronic materials to produce harm. Conventional antistatic agents such as carbon black or graphite, added to the pressure sensitive adhesive made of antistatic protection film color is dark or black, is not conducive to visual observation and analysis detection, and affect the appearance. The antistatic protective film made by adding metal powder to the pressure sensitive adhesive has the phenomenon that the film surface is not smooth and even damages the electronic components. At the same time, the transparency is poor and affects the observation.

The use of conductive polymers such as polythiapol and polyaniline has the problem of poor compatibility with pressure-sensitive adhesive, which causes the peel strength of pressure-sensitive adhesive to fluctuate greatly, resulting in degumming, adhesive layer transfer and serious spot and other phenomena. It is necessary to apply a separate layer of antistatic coating, and then apply the pressure sensitive adhesive again. The antistatic effect is significantly weakened. Increased production costs.

Patent CN201310654380.6 discloses an anti-static voltage sensitive adhesive protective film and its preparation method. The method adopts the synergistic compounding of electrolyte based polymer conductive substance and nanomaterials to achieve conductive effect, and achieves the maximum anti-static effect with a small additive amount, without affecting the peeling force of the protective film itself and no residual adhesive after peeling. However, this method uses expensive nano silver wire and nano copper wire, high cost and limited source of raw materials, so it is not suitable for widespread application.

Patent CN201510610771.7 discloses an antistatic pressure sensitive adhesive and its preparation method, which uses LiAsF6 to form ionic conducting polymer by complexing with polyurethane macromolecular chains synthesized by the reaction of polyoxyethylene polyol, polyoxyel polyol and polytetrahydrofuran polyol with isocyanate. This kind of ionic conductive polymer structure has poor compatibility with oil-based acrylic resin, and the protective film made is not transparent at low temperature due to the difference in crystallization temperature of the pressure sensitive adhesive layer.

Smprotectivefilm is also committed to the emulsion pressure sensitive adhesive research and development, production, sales of the company. We can effectively solve the problems that customers encounter in the use of glue because of different production equipment and technology.

We specialize in the production of protective film and pressure sensitive adhesive for many years, with our own R & D team. In the future, through continuous research and development and summing up experience, our glue can be applied to more product application fields.