不同的表面处理方法和粘接剂对钛网-硅橡胶剪切粘接强度的影响

Influence of different surface treatment methods and adhesive types on shear bond strength between titanium mesh and silicone rubber

目的:探讨不同的表面处理方法和粘接剂对钛网-硅橡胶剪切粘接强度的影响。方法:钛网表面分别选用打磨、打磨+喷砂、打磨+喷砂+Permabond POP的表面处理方式,粘接剂选用Permabond 731、Permabond 4C10两种,参照GB/T13936-2014测定钛网和硅橡胶之间的剪切粘接强度,并采用光学显微镜观察粘接界面的破坏类型。结果:不同表面处理组间差异有统计学意义(P<0.05)。C组(1.98±0.14MPa)显著高于B组(0.26±0.11MPa)和A组(0.17±0.08MPa);F组(2.58±0.16MPa)显著高于E组(0.41±0.19MPa)和D组(0.21±0.10MPa)。两种粘接剂的组间剪切粘接强度差异具有统计学意义(P<0.05)。粘接剂种类和表面处理方法间有交互效应(P<0.05),表面喷砂联合使用Permabond POP底涂剂后采用Permabond 4C10粘接,得到的剪切粘接强度最大。A组到F组试样内聚破坏率依次为0%,0%,42.85%,0%,0%,85.71%。结论:两种粘接剂均可获得较好的粘接力,其中Permabond 4C10粘接性能优于Permabond 731。同时钛网表面进行喷砂,并联合使用相应的底涂剂可提高钛网与硅橡胶之间的粘接强度,是一种有效的表面处理方式。

Objective： To study the influence of different surface treatment methods and adhesive types on shear bond strength between titanium mesh and silicone rubber. Methods： Grinding, grinding ＋ sandblasting, grinding ＋ sandblasting ＋Permabond POP on the surface of titanium mesh were selected. Two kinds of adhesive, including Permabond 731 and Permabond 4C10 were selected. Shear bond strength between titanium mesh and silicon rubber was determinated referring to GB/T 13936-2014 and damage type of was observed bonding interface with optical microscope. Results： There was a significant difference between the different surface treatment groups（P〈0.05）. Group C（1.98±0.14 MPa） was significantly higher than group B（0.26±0.11 MPa） and group A（0.17±0.08 MPa）; Group F（2.58±0.16 MPa） was significantly higher than group E（0.41±0.19 MPa） and Group D（0.21±0.10 MPa）. Shear bond strength was significant different between two type of adhesive（P〈0.05）. There was an interactive effect between the adhesive type and surface treatment methods（P〈0.05）. Shear bond strength of Permabond 4C10 with Surface blasting and Permabond POP primer was maximum. From group A to group F, cohesive failure rates were 0%, 0%, 42.85% and 0%, 0%, 85.71% in sequence. Conclusion： Two type of adhesive can get a better shear bond strength. Adhesive properties of Permabond 4C10 is superior than that of Permabond731. Sandblasting combining appropriate primer on titanium mesh surface can improve shear bond strength, and which is an effective surface treatments.