Crosshair reticle

This article mainly discusses how to choose the appropriate paint film cross-cut tester based on different adhesion testing requirements.

This article introduces the method of evaluating coating adhesion using a paint film cross-cut tester combined with the tape method.

This article introduces a method for measuring the hiding power of coatings using black and white checkerboard paper.

This article compares three commonly used adhesion testing methods: the cross-cut test, the scratch test, and the pull-off test.

The cross-cut test, paired with adhesion test tape, is a commonly used method for evaluating coating adhesion. It involves using a cross-cut knife to score a grid pattern on the coating surface, followed by the rapid peeling of specialized tape. The adhesion level is then assessed by observing the extent of coating detachment.

This article introduces the cross-cut adhesion test, a common method for evaluating the adhesion of paint coatings.

Colorimetric tube visual colorimetry is a method used to determine the color hue tendency of varnish samples by directly comparing them with a standard color scale using the human eye. During operation, samples and standard liquid columns should be prepared using colorimetric tubes of consistent specifications under standard lighting conditions, and the hue differences should be observed in parallel.

The cross-cut test is a standard method for testing ink adhesion. It involves cutting a grid pattern on the coated surface, applying and then peeling off adhesive tape, and observing the extent of ink peeling to evaluate the adhesion grade.

The adhesion tester is a device used to measure the bonding strength between a coating and the substrate. It applies a pulling force until the coating detaches, records the force value, and calculates the strength. Common testing methods include the pull-off method, cross-cut method, etc., each with corresponding standards.

This article introduces the standardized application of visual color comparison boxes in ink color evaluation. It emphasizes that to ensure the accuracy and consistency of color judgments, the evaluation environment must be strictly controlled.

The pulp freeness tester is used to evaluate the drainage performance of pulp, and its operation must strictly adhere to standardized procedures. First, prepare clean instruments and pulp samples at standard temperature, then calculate the freeness value based on the drainage time.

This article introduces two methods for measuring the hiding power of pigments: the black-and-white checkerboard method and the reflectometer method.

This article mainly discusses three common methods used in coating adhesion testing: the cross-cut test, the scratch test, and the pull-off test. The choice of method should be based on the specific characteristics of the coating and the testing objectives. Sometimes, combining multiple methods can provide a more comprehensive evaluation of adhesion performance.

When selecting a vibration test system, start by carefully reviewing the test standards to clarify key parameters such as frequency range, thrust force, displacement, acceleration, and vibration type. Then, based on the standard requirements, calculate the required thrust force, match the specifications of the shaker and amplifier, and select an appropriate control system.

The salt spray test chamber accelerates the evaluation of the corrosion resistance of powder coatings by simulating a salty and humid environment. The test is based on electrochemical principles, where salt spray penetrates coating defects and initiates corrosion of the metal substrate. During operation, parameters such as temperature and sedimentation rate must be strictly controlled, and standards such as ISO and ASTM must be followed.