粘接是不同资料界面间接触后互相作用的结果，被粘物与粘料的界面张力、外表自在能、官能基团性质、界面间反响等都影响胶接，特别是双组份打胶机的胶粘剂更是如此。以下引见几个方面的粘接作用机理。这些胶黏剂的粘合机理，关于我们双组份打胶机厂家在处理研讨附着力的问题有很大借鉴作用。
Adhesion is the result of the interaction between different data interfaces. The interfacial tension between the adhesives and the adhesives, the appearance self-function, the properties of functional groups, the interfacial reaction and so on all affect the bonding, especially the adhesive of the two-component punching machine. The following are some aspects of the bonding mechanism. The bonding mechanism of these adhesives is of great self-creation in dealing with the problem of adhesion of our two-component gluer manufacturer.
一、吸附理论
I. Adsorption Theory
人们把固体对胶粘剂的吸附看成是胶接主要缘由的理论，称为胶接的吸附理论。理论以为：粘接力的主要来源是粘接体系的分子作用力，即范德化引力和氢键力。胶粘与被粘物外表的粘接力与吸附力具有某种相同的性质。胶粘剂分子与被粘物外表分子的作用过程有两个过程：
The theory of adsorbing adhesives by solids is regarded as the main reason of bonding, which is called the theory of adsorbing adhesives. According to the theory, the main source of bonding force is the molecular force of the bonding system, that is, van der Waals gravity and hydrogen bonding force. Adhesion and adsorptive force have the same properties as the external adhesion and adsorptive force of the adhesives. There are two processes in the interaction between the adhesive molecule and the surface molecule of the adhesives.
阶段是液体胶粘剂分子借助于布朗运意向被粘物外表扩散，使两界面的极性基团或链节互相靠近。在此过程中，升温、施加接触压力和降低胶粘剂粘度等都有利于布朗运动增强。
In the first stage, the molecules of liquid adhesives are diffused by the surface of the adhesives by means of Brownian transport intention, so that the polar groups or chains of the two interfaces are close to each other. In this process, heating, applying contact pressure and reducing the viscosity of adhesives are beneficial to the enhancement of Brownian motion.
第二阶段是吸附力的产生。当胶粘剂与被粘物分子间的间隔到达5-10?时，界面分子之间便产生互相吸收力，使分子间的间隔进一步缩短四处于大稳定状态。
The second stage is the generation of adsorption force. When the interval between the adhesives and the adhesives reaches 5-10?, the intermolecular absorption force will be generated, which will further shorten the interval between the molecules and make them in the maximum stable state.
胶粘剂的极性太高，有时分会严重阻碍潮湿过程的停止而降低粘接力。分子间作用力是提供粘接力的要素，但不是独一要素。在某些特殊状况下，其他要素也能起主导作用。
The polarity of the adhesives is too high, sometimes it will seriously hinder the stop of the wet process and reduce the bonding force. Intermolecular force is an essential factor in providing cohesion, but it is not the only one. In some special cases, other factors can also play a leading role.
二、化学键构成理论
II. Theory of Chemical Bond Composition
化学键理论以为胶粘剂与被粘物分子之间除互相作用力外，有时还有化学键产生，例如硫化橡胶与镀铜金属的胶接界面、偶联剂对胶接的作用、异氰酸酯对金属与橡胶的胶接界面等的研讨，均证明有化学键的生成。化学键的强度比范德华作用力高得多；化学键构成不只能够进步粘附强度，还能够克制脱附使胶接接头毁坏的弊病。但化学键的构成并不普遍，要构成化学键必需满足一定的条件，所以不可能做到使胶粘剂与被粘物之间的接触点都构成化学键。况且，单位粘附界面上化学键数要比分子间作用的数目少得多，因而粘附强度来自分子间的作用力是不可无视的。
Chemical bond theory holds that besides the interaction force between adhesives and the molecule of the adhesives, there are sometimes chemical bonds, such as the bonding interface between vulcanized rubber and copper-plated metal, the effect of coupling agent on bonding, and the bonding interface between metal and rubber by isocyanate. The strength of chemical bond is much higher than Van der Waals force; chemical bond composition can not only improve the adhesion strength, but also restrain the disadvantage of desorption which destroys the bonded joint. However, the chemical bond is not universal. To form a chemical bond, certain conditions must be met. Therefore, it is impossible to make the contact point between the adhesive and the adhesives form a chemical bond. Moreover, the number of chemical bonds per unit adhesion interface is much less than the number of intermolecular interactions, so the adhesion strength from intermolecular forces can not be ignored.

三、静电理论
3. Electrostatic theory
当胶粘剂和被粘物体系是一种电子的承受体-供应体的组合方式时，电子会从供应体（如金属）转移到承受体（如聚合物），在界面区两侧构成了双电层，从而产生了静电引力。
When the adhesives and the adhesives are a combination of electron acceptors and suppliers, electrons will be transferred from the suppliers (such as metals) to the acceptors (such as polymers), forming a double layer on both sides of the interface region, thus generating electrostatic attraction.
在枯燥环境中从金属外表快速剥离粘接胶层时，可用仪器或肉眼察看到放电的光、声现象，证明了静电作用的存在。但静电作用仅存在于可以构成双电层的粘接体系，因而不具有普遍性。此外，有些学者指出：双电层中的电荷密度必需到达1021电子/厘米2时，静电吸收力才干对胶接强度产生较明显的影响。而双电层栖移电荷产生密度的大值只要1019电子/厘米2（有的以为只要1010-1011电子/厘米2）。因而，静电力固然的确存在于某些特殊的粘接体系，但决不是起主导作用的要素。
In the dry environment, the light and sound phenomena of discharge can be observed by instrument or naked eye when the adhesive layer is rapidly peeled off from the metal surface, which proves the existence of electrostatic effect. However, the electrostatic effect only exists in the bonding system which can form a double layer, so it is not universal. In addition, some scholars pointed out that when the charge density in the electric double layer must reach 1021 electron/cm 2, the electrostatic absorption ability has a more obvious effect on the bonding strength. However, the maximum generation density of bipolar migration charge is only 1019 electrons/cm 2 (some think only 1010-1011 electrons/cm 2). Therefore, although electrostatic force does exist in some special bonding systems, it is by no means a dominant factor.
四、机械作用力理论
IV. MECHANICS FORCE THEORY
从物理化学观念看，机械作用并不是产生粘接力的要素，而是增加粘接效果的一种办法。胶粘剂浸透到被粘物外表的缝隙或凹凸之处，固化后在界面区产生了啮合力，这些状况相似钉子与木材的接合或树根植入泥土的作用。机械衔接力的实质是摩擦力。在粘合多孔资料、纸张、织物等时，机构衔接力是很重要的，但对某些坚实而润滑的外表，这种作用并不显着。
From the viewpoint of physicochemistry, mechanical action is not a factor to produce bonding force, but a method to increase bonding effect. Adhesives soak into the cracks or bumps on the surface of the adhesives and produce meshing forces in the interface area after solidification, which are similar to the bonding of nails to wood or the effect of tree roots implanted into soil. The essence of mechanical cohesion is friction. Institutional cohesion is important in bonding porous materials, paper, fabrics, etc., but it is not significant for some solid and lubricated surfaces.
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