KNOWLEDGE - lr-test

29 May

Stacking test of transport packages

The stacking test of transport packages is a common test method used to evaluate the bearing capacity and stability of packages during transport. The following is the general stacking test process: Prepare packages: Select packages to be tested for stacking and ensure that they comply with shipping packaging requirements and standards. The packing parts can be cartons, wooden cases, plastic containers, etc. Setting test conditions: According to the actual transportation situation and requirements, determine the conditions of stacking test, including stacking [...]

29 May

Viscosity coefficient and surface tension

Viscosity coefficient and surface tension are two important parameters of liquid properties, which describe the behavior and characteristics of liquid under different conditions. Viscosity coefficient and surface tension Viscosity coefficient: Viscosity coefficient is a physical quantity that describes the viscosity resistance inside a liquid and measures the viscosity or fluidity of a liquid. The higher the coefficient of viscosity, the thicker the liquid, and the more difficult it is to flow. The coefficient of viscosity is usually expressed as the ratio [...]

29 May

The relationship between viscosity and shear rate

There is a close relationship between viscosity and shear rate, which is the rate at which a liquid deforms under shearing force.Shear rate is a physical quantity describing the rate of liquid deformation, representing the deformation rate within a unit time. It is the ratio of Shear velocity to the geometric constraint under which the liquid is placed. Shear rate is usually expressed as the ratio of the displacement difference per unit time (shear velocity) to the distance between [...]

29 May

Method for determination of solid content

Solid content refers to the percentage or mass fraction of solid material contained in a liquid. It is a measure that describes the concentration or content of solids in a liquid. Solid content is often used to describe the content of solid substances in various liquid systems such as solutions, suspensions, emulsions and colloids. The formula for calculating solid content is: Solid content (%) = (solid mass/total mass) x 100 Among them, the solid mass refers to the mass of the solid [...]

26 May

Application of tensile strength testing machine in plastic film

Plastic film is a common packaging material, widely used in food, medicine, chemical and other fields. The tensile strength of plastic film is one of the important indexes of its quality and reliability. The tensile strength instrument can help manufacturers and users to evaluate the tensile strength of plastic film, so as to improve the quality and reliability of products. In the application of plastic film, tensile strength instrument is mainly used to test the tensile strength of different plastic [...]

26 May

Application of friction coefficient tester in rubber

Rubber is an important material widely used in machinery, automobile, electronics and other fields. Its friction performance has a direct impact on its use effect and quality. Friction coefficient tester can help manufacturers and users to evaluate the friction performance of rubber, so as to determine its application range and service life, improve the quality and reliability of products. In the application of rubber, the friction coefficient tester is mainly used to test the friction coefficient between rubber and [...]

26 May

Application of tensile strength tester in chemical fiber

Chemical fiber is a common textile material, widely used in clothing, home and other fields. The tensile strength of chemical fiber is one of the important indexes of its quality and reliability. The tensile strength meter can help manufacturers and users to evaluate the tensile strength of chemical fiber, so as to improve the quality and reliability of products. In the application of chemical fiber, tensile strength meter is mainly used to test the tensile strength of different chemical [...]

26 May

Application of breaking strength tester in cotton fabric testing

Cotton is a common textile, widely used in clothing, home and other fields. The breaking strength of cotton fabric is one of the important indexes of its quality and reliability. The breaking strength tester can help manufacturers and users evaluate the breaking strength of cotton fabric, so as to improve the quality and reliability of products. In the application of cotton cloth, the breaking strength tester is mainly used to test the breaking strength of different cotton materials, including the [...]

25 May

How to test the low temperature stability of building coatings?

The purpose of testing the low temperature stability of architectural coatings is to evaluate the stability and durability of coatings in low temperature environment, so as to determine its applicable temperature range and service life. If the low temperature stability of the coating is poor, it is easy to deteriorate, hardening, peeling and other problems in the low temperature environment, which affects the aesthetic and protective performance of the surface of the coating. Therefore, testing the low temperature stability [...]

25 May

How to test constructability of building paint?

Testing the constructability of building coatings is to evaluate the constructability, fluidity, drying time and other indicators of coatings in the construction process, so as to determine its scope of application and construction quality. If the construction performance of the coating is poor, it is easy to appear in the construction process of uneven coating, foaming, flowing and other problems, which affect the beauty of the coating surface and protection performance. Therefore, testing the constructability of building coating is [...]