Bonding of automotive glass is generally performed with 1C PUR adhesive on a primed ceramic frit or naked glass surface. The aim of this research was to replace the chemistry of the primer with an atmospheric pressure plasma treatment (APPT) with compressed air for cleaning and activation directly before bonding. Characterization of the glass surface was performed with surface energy through contact angle, XPS, TOF-SIMS and adhesive peel bead test. The results show that APPT treatment can clean the surface, improve the wetting, improve the bonding but reduce the number of non bridging oxygen for the adhesive to bond to. The highest measured spot temperature of the glass during APPT was measured up to 270 °C, but the temperature was depending on process parameters. A reduction in non bridging oxygen was also seen during heating of the reference glass at 100 °C. A further reaction was seen when measured after a 550 °C heating. A modified APPT treatment with deionized water as precursor was used. The results show that the APPT with water does not lower the level of non bridging oxygen and the bonding was further improved.

中文翻译：

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通过等离子体处理改善玻璃粘合

汽车玻璃的粘合通常使用1C PUR粘合剂在涂有底漆的陶瓷熔块或裸玻璃表面上进行。这项研究的目的是用大气压等离子体处理（APPT）代替底漆的化学成分，并在压缩之前直接用压缩空气进行清洁和活化。玻璃表面的表征是通过接触角，XPS，TOF-SIMS和粘合剥离珠试验通过表面能进行的。结果表明，APPT处理可以清洁表面，改善润湿性，改善粘合力，但可以减少粘合剂要粘合的非桥接氧的数量。在APPT期间，测量到的最高玻璃点温度最高可测到270°C，但温度取决于工艺参数。在将参考玻璃加热到100°C的过程中，未桥接的氧气也减少了。在550°C加热后进行测量，可以看到进一步的反应。使用以去离子水为前体的改良APPT处理。结果表明，与水的APPT不会降低非桥连氧的水平，并且键合得到进一步改善。