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与常用的热固化方法相比,电子束固化结构粘结剂的方法具有许多潜在地令人感兴趣的特性或许最有意义的特性就是这种方法在室温下,只采用接触压力,在很短时间内进行固化的能力。辐射固化也有助于避免在高温固化时经常会引起的残余热应力。其它有实用价值的优点包括:由于免除了热压器和固化炉,在必要的接触压力下简化了程序,因此能量消耗低,而且在完全活性的粘附混合物固化过程中,由于没有挥发物释出,因此也避免了空气污染。进行了大量试验,以便鉴定作粘结剂用途的、可用辐射方法固化的聚合物系统,并比选暴露在包括湿度、溶剂和高温老化的各种环境条件下的性能。本研究中采用宽范围剂量的电子束辐射固化铝材搭接剪切试样数据是根据几种选用的结构粘结剂系统(如聚酯、乙烯基酯、丙烯酸树脂和改性的聚酰亚胺)得到的。提出了关于上述粘结剂系统性能的初步结论;而且提出了优选采用工业电子束加速器装置固化标准装配件所用的这种方法的推荐方案。具有磁束扫描头的商品化的电子加速器可以用于装配线处理工序,而遥控线性电子加速器头可以用于飞机、导弹和高性能舰船上诸如局部粘结、熔接、进行修补和安装加强板的局部处理。
Compared with the commonly used thermosetting methods, the method of electron beam curing structural adhesives has many potentially interesting features Perhaps the most significant feature is that this method at room temperature, using only the contact pressure in the very short The ability to cure within the time. Radiation curing also helps to avoid the residual thermal stresses that are often caused when curing at high temperatures. Other practical advantages include: Due to the elimination of the autoclave and curing oven, the process is simplified with the necessary contact pressure and therefore the energy consumption is low and during the curing of the fully activated adhesive mixture, Out, so also to avoid air pollution. Numerous tests have been conducted to identify polymer-curable radiation curable polymers for use as binders and to compare performance under various environmental conditions including humidity, solvents, and high temperature aging. In this study, a wide range of doses of electron beam radiation cured aluminum lap shear specimen data was prepared based on several selected structural binder systems (eg, polyester, vinyl ester, acrylic, and modified polyimide Amine). A preliminary conclusion about the properties of the above binder system is presented; and a recommendation is made that this method, which is preferably used for curing standard assemblies using an industrial electron beam accelerator device, is proposed. Commercial electron accelerators with magnetic beam scan heads can be used in assembly line processes, whereas remote linear electron accelerator heads can be used on aircraft, missiles, and high performance vessels such as local bonding, welding, patching, and mounting of stiffeners deal with.