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Analysis on adsorption theory of colored steel composite board glue

点击次数:  更新时间:18/08/27 16:09:08 来源:www.qmygw.com关闭
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As one of the most widely used building materials in modern construction industry, color steel composite board glue is light and flexible, environmentally friendly and energy - saving, strong and durable, and can meet the building needs of different consumers。 Colored steel composite board glue is a kind of adhesive, which is very common in industrial use。 because of its frequent use, it is also a kind of common industrial glue。 The polarity of color steel composite board glue adhesive is too high, which sometimes seriously hinders the wetting process and reduces the adhesive force。 Therefore, we should understand its adsorption theory。
People regard the adsorption of solid on colored steel composite board glue as the theory of the main reason for glue bonding, which is called the adsorption theory of glue bonding. The theory holds that the main source of adhesive force of color steel composite board glue is the molecular force of adhesive system, namely van der waals force and hydrogen bond force. When the distance between the color steel composite board glue adhesive and the adherend molecules reaches 10 - 5 & ARINC; When the interface molecules are attracted to each other, the distance between the molecules will be further shortened to the maximum stable state everywhere.
According to calculations, due to van der waals forces, when the two ideal planes are 10 - arining apart; When, the gravitational strength between them can reach 10 - 1000 MPa; When the distance is 3 - 4 & ARINC; , up to 100 - 1000 MPa. This value far exceeds the strength that the best modern structural adhesive can achieve. Therefore, some people think that as long as the two objects are in good contact, that is, the adhesive fully wets the bonding interface, the calculated value assumes that the two ideal planes are in close contact and that the interaction between the molecules of each pair on the interface layer is destroyed at the same time, there is no guarantee that the interaction between the molecules of each pair will occur at the same time.
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