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      Viscosity strength of color steel composite board glue

      点击次数:  更新时间:21/12/28 10:01:12 来源:www.hablaha.com关闭
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      The viscosity strength of Shandong Caigang composite board adhesive is one of the important indicators for evaluating the quality of adhesives, and this is mainly divided into:
      1. Definition of bonding strength
      Adhesive strength refers to the stress required to damage the interface between the adhesive in the adhesive and the adherend or its vicinity under the action of external force. The adhesive strength is also known as the adhesive strength.
      Adhesive strength is the stress required for the failure of the adhesive system. Its magnitude not only depends on the adhesive force, the mechanical properties of the adhesive, the nature of the adherend, and the bonding process, but also the joint form and stress condition (type, Size, direction, frequency), environmental factors (temperature, humidity, pressure, medium) are related to test conditions, experimental techniques, etc. It can be seen that adhesive strength is only one of the important factors that determine adhesive strength, so adhesive strength and adhesive strength are two concepts with completely different meanings and cannot be confused.
      2. The force form of the bonded joint
      The force on the adhesive layer of the adhesive joint under the action of external force can be summarized into four forms: shearing, stretching, uneven pull-off and peeling.
      (1) Cut. The external force is equal in magnitude and opposite in direction, basically parallel to the bonding surface, and evenly distributed on the entire bonding surface.
      (2) Stretching. Also known as uniform pull-off, it is perpendicular to the bonding surface and is evenly distributed on the entire bonding surface under the action of a pulling force in the opposite direction.
      (3) Uneven pull-off. It is also called cleavage. Although the direction of external force is perpendicular to the bonding surface, the distribution is uneven.
      (4) Peeling. The direction of the external force is at a certain angle to the bonding surface, and the above four forces are basically distributed on a straight line of the bonding surface. It is very likely that there are several forces in the same adhesive system, but it is only a question of which one is the main one.
      3. Classification of bonding strength
      According to the different forces of the bonded joints, the bonding strength can be divided into shear strength, tensile strength, uneven pull-off strength, peel strength, compressive strength, impact strength, bending strength, torsional strength, fatigue strength, and creep resistance. Change the intensity and so on.
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