粘度测量对于流变行为至关重要, 产品的稳定性和可操作性, 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, 密度, 稳定, solid content and molecular weight changes. When choosing a rotational viscosity chronograph, here are some suggestions:

旋转粘度计的选型经验

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.

旋转粘度计的选型经验

测量范围

Different models of viscometers are divided into LV (low viscosity), 房车 (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.

旋转粘度计的选型经验

Temperature control

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, 乳胶, biochemical preparations, oils, 石油, 化学试剂, 涂料, 化妆品, ETC.

RV type (medium adhesive) is suitable for hot melt adhesive, 画, asphalt, 纸浆, pottery pulp, 有机溶剂, cream, plastic sol, daily cosmetics, 淀粉, 食物, 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, 凝胶, sealant, sheet molding plastic, syrup, tar, ETC.