Varnish Drying Time Tester

The varnish drying time tester applies pressure or scratches on the surface of the paint film through mechanical or electronic means, determining the drying stage based on the film's resistance to deformation or adhesion. It is used to monitor drying speed in coating production and application processes, guiding construction intervals and packaging times.
Selection
When selecting, pay attention to ensuring that the measurement method matches the actual drying type, the instrument's range covers the drying duration of the samples to be tested, and the specifications of the pressure head or stylus comply with standard requirements. The operation interface should be clear and easy to read, and the instrument structure should be robust and durable. Consider the adaptability to sample thickness and the functionality for controlling environmental temperature and humidity.

Terms

Standards

Instruments

The instrument adopts a six-pin design, forms plow marks on the paint film through uniform linear motion, and automatically displays the drying process according to the change of traces. The measurement error is controlled within +/- 4%, and supports three time settings of 6h, 12h and 24h.

$ 461.00

Using 200g weight and 1cm ² bottom area design, in line with GB/T 1728 standard, through the filter paper test method to accurately determine the film surface drying and practical drying time, easy to operate, reliable results.

$ 114.00

The circular track is used to automatically record the film drying process continuously, equipped with 4 kinds of specifications to choose from, the track diaMeter is 100mm, and the measurement error is +/- 0.5%, which can intuitively analyze the stages in drying state.

$ 206.00

Using 200 +/- 0.2 g weight and 1 square centiMeter bottom area design, the drying process of the paint film was accurately determined by the cotton ball method to distinguish between surface drying and actual stages in drying.

$ 115.00

It can measure drying time from 1 minute to 48 hours, with accuracy up to 10 seconds, and has intelligent recording function to improve the resolution of long drying process, which is suitable for various coating types.

$ 1649.00

Equipped with 6 strokes and 305mm Travel, it can automatically record four stages of the drying process continuously, and intuitively display the curing state of the paint film through the straight track, and the measurement error is controlled within +/- 4%.

$ 498.00

Using stainless steel material, bottom area 1cm ², weight 200g, in line with GB/T 1728 standard, can accurately determine the film and putty film surface drying time.

$ 102.00

The tire size of the instrument is Φ 241 +/- 6mm, weight 15.8 +/- 0.2kg, dedicated to marking Coating drying time test, easy to operate, accurate and reliable results.

$ 196.00

The equipment uses 200 +/- 0.2g weight, sample size 50 * 120 * (0.2~ 0.3) mm, can accurately determine the surface and actual drying time, in line with national standards.

$ 114.00

Measure the surface of paint film and putty film and the actual drying time, in line with GB/T1728 standard, the weight of the Tester is 200g, and the weight of the bottom area is 1cm ².

$ 98.00

The instrument uses 241 +/- 6mm tire uniform rolling detection, wet film thickness 200um +/- 20um, every 30 seconds, repeability test, accurate determination of non-stick tire drying time, suitable for marking Coating quality control.

$ 231.00

Equipped with 6 Φ 1mm scribing needles and 3 independent carriages, different samples can be tested simultaneously, Travel 300mm, load 11g, and the coating stages in drying can be accurately determined by observing the scratch track.

$ 880.00

Equipped with 6 Φ 1mm scribing needles and 11g load, 300mm Travel can be set to 6/12/24 hours track period, and each stage of coating drying can be accurately determined by scratch observation method.

$ 751.00

The drying process of paint film and putty film can be accurately measured by using circular track needle design, equipped with four different radius needle (R0.25/0.5/1.0/1 mm), and the track period is 24h/r.

$ 223.00

Simultaneous measurement of 6 samples, with three adjustable speeds for 6-12-24 hours, automatic recording of the drying process to ensure the validity and conformity of the measurement process.

$ 541.00

Articles

The use of gravure proofing machines in the comprehensive evaluation of gravure ink printability and drying performance.
This article explores how a gravure proofing press can be used to comprehensively evaluate the printability and drying properties of gravure inks. The experiment tested the dot sharpness, transfer rate, and leveling properties of different inks using standard equipment, while recording drying times through the filter paper method and infrared temperature measurement.
Drop Ball Method of Impact Testing Machine for Evaluating the Impact Resistance of Varnish
This article introduces the use of the falling ball method with an impact testing machine to assess the impact resistance of varnish. The method involves dropping a steel ball of specified weight from a predetermined height onto a test panel coated with varnish to observe whether the coating cracks or peels off, thereby evaluating its impact resistance.
Wet film thickness gauge measures the wet film thickness of varnish.
The wet film thickness gauge is a mechanical tool used to measure the thickness of liquid varnish coatings. It operates by rolling the gauge so that the tips of its teeth contact the substrate and leave marks. The thickness value is then obtained by the operator reading the scale of the first tooth that becomes coated with the varnish.
Method for determining the dynamic viscosity of varnish using a falling ball viscometer
This article introduces a method for measuring the dynamic viscosity of varnish using a falling-ball viscometer. It is based on Stokes' law, which calculates viscosity by measuring the time required for a standard small ball to fall a fixed distance in a vertical glass tube filled with varnish.
Muffle Furnace Ash Test Method for Determination of Inorganic Filler Residues in Varnish
This article introduces the method of using the muffle furnace ash test to determine the residual amount of inorganic fillers in varnish. The inorganic substances in varnish can affect the performance of the coating, making accurate determination of ash content important for quality control.
Pull-off Adhesion Tester for Quantitative Measurement of Varnish Adhesion.
The pull-off adhesion tester quantitatively measures the adhesion strength between a varnish coating and the substrate by vertically pulling off a test column. It is essential to ensure proper substrate preparation, complete curing of the coating, and the use of a suitable adhesive during testing.
Buchholz indentation tester measures the indentation hardness of varnish.
The Buchholz indentation test is a method for measuring the indentation hardness of coatings such as varnishes. It involves applying a specific indenter to the coating surface under a standard load, and after unloading, the length of the residual indentation is measured. A longer length indicates lower hardness.
Visual color comparison method using colorimetric tubes to determine the color phase of varnish.
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.
Flash point tester for determination of closed cup flash point of varnish
This article introduces the method for determining the closed-cup flash point of varnish using a flash point tester. The flash point refers to the minimum temperature at which the vapor on the surface of the varnish ignites momentarily when exposed to a flame after heating. It is a crucial indicator for assessing the fire risk during its production, storage, and transportation.
Thermogravimetric Analyzer for Determining the Solid Content of Varnish
The principle of determining the solid content of varnish using a thermogravimetric analyzer is as follows: when the sample is heated, volatile solvents and moisture evaporate, leading to a decrease in mass, while the remaining solid mass stabilizes. The solid content is calculated by comparing the initial and final mass ratios.
Adhesion Tester Pull-Off Method for Determining Adhesion Strength of Varnish
This article introduces the test method for measuring the adhesion strength of varnish using the pull-off method. It involves adhering test cylinders to the coating and substrate with adhesive, then vertically pulling them apart with an instrument to record the maximum pulling force and calculate the adhesion strength.
Key steps for measuring the efflux time of varnish using a viscosity cup method
This article introduces the method for measuring the outflow time of varnish using a viscosity cup. The principle is based on Poiseuille's law, where viscosity is estimated by recording the time it takes for the liquid to completely flow out from the small hole at the bottom of the cup—longer times typically indicate higher viscosity.
Application of Gloss Meter in Gloss Measurement of Varnish Coatings
A gloss meter is used to measure the gloss of varnish coatings by detecting surface-reflected light to quantitatively assess the appearance of the coating. The measurement is based on the principle of specular reflection of light, commonly employing angles such as 20°, 60°, and 85° to correspond to different gloss ranges, and follows standard formulas for calculation.
The pendulum hardness tester tests the scratch resistance limit of varnish.
The pendulum hardness tester measures the hardness of varnish by observing the attenuation of the pendulum's swing on the coating surface, with faster attenuation indicating a softer coating. The scratch resistance of varnish depends not only on hardness but also on elasticity and toughness. Hardness testing sets the basic threshold for scratch resistance.
Drying Time Determination: Simultaneous Verification of Surface Drying Test Method, Through-Drying Test Method, and Instrumental Test Method
This article discusses three methods for determining the drying time of materials such as coatings. Traditional methods are divided into surface drying and through drying measurements, which are simple to operate but rely on subjective judgment. Instrumental methods provide objective data by monitoring physical changes such as mass and resistance, offering higher precision but at a higher cost.