Вимірювання в'язкості має важливе значення для реологічної поведінки, стабільність і працездатність виробів, so viscosity measurement has important guiding value in predicting the process control and transportability of products during use. By measuring the rheological properties of the sample, the rotary viscometer provides a sensitive and convenient method for the detection of other product characteristics such as color, щільність, stability, solid content and molecular weight changes. When choosing a rotational viscosity chronograph, here are some suggestions:

Досвід підбору ротаційного віскозиметра

Sample characteristics

Depending on the sample available, such as 8-13mL, the SSR small sample adapter can be selected.

For sample viscosity below 15cP, choose ULR ultra-low viscosity adapter.

Standard solution

It is recommended to select a viscosity standard solution based on the selected model, common viscosity range, and measurement temperature. After opening, it is recommended to keep it clean, cool and dry, avoid direct sunlight, and reduce long-term contact with air.

Machine type

Basic viscometers are available for laboratory quality control. According to the specific characteristics of the liquid and the expected viscosity range, select the appropriate type and number of rotors. Each model has a specific range of applications, from low viscosity solvent-based adhesives to high viscosity asphalt, clay and other different substances. Product development can consider touch screen viscometers. When comparing the data of upstream and downstream suppliers, select according to the actual measurement conditions.

Досвід підбору ротаційного віскозиметра

Діапазон вимірювання

Different models of viscometers are divided into LV (low viscosity), RV (medium viscosity), HA and HB (high viscosity) four models according to the range. These models correspond to the low, medium and high viscosity ranges respectively. Select the right type and number of rotors to adapt to the different viscosity of the liquid. According to the number of selected rotors, the viscosity measurement range of each model can be determined.

Досвід підбору ротаційного віскозиметра

Контроль температури

In the medium temperature range (-20°C to 95°C), a constant temperature bath is recommended for temperature control. High temperature range (100°C~250°C) can be selected NKY-25 electric heater for temperature control. Temperature has a great influence on viscosity, so it is necessary to consider temperature control when selecting. The medium temperature range (-20°C95°C) allows the use of a constant temperature bath, while the high temperature range (100°C250°C) allows the choice of an NKY-25 electric heater for precise temperature control.

Purchase suggestion

LV type (low viscosity) is suitable for solvent-based adhesives, latex, biochemical preparations, oils, petroleum, chemical reagents, покриття, косметичні засоби, тощо.

RV type (medium adhesive) is suitable for hot melt adhesive, фарба, asphalt, paper pulp, pottery pulp, organic solvent, cream, plastic sol, daily cosmetics, starch, харчування, surface coating and so on.

HA/HB type (high viscosity) is suitable for asphalt, clay, plugging agent, peanut butter, chocolate, putty, marl, epoxy resin, water repellent, гель, sealant, sheet molding plastic, syrup, tar, тощо.