As an important basic raw material in industrial production, latex plays a vital role in the production of many products. However, in order to ensure its quality and stability, it is necessary to use a latex high-speed mechanical stability tester. The instrument conforms to the standard requirements of “GBT 8301 concentrated natural latex mechanical stability determination” and “SHT 1151 synthetic latex high speed mechanical stability determination method”, and is one of the key equipment necessary for latex production units and scientific research institutions.

Test process

The method for testing the mechanical stability of latex is relatively simple but rigorous. First, take 100 grams of the sample and dilute it with an ammonia solution to ensure that the solid content reaches 55% of the total mass fraction. Then, the sample is put into the heating device, so that its temperature reaches 36~37℃, and gently stir. Subsequently, 80 grams of latex was obtained by using stainless steel mesh filtration and placed in a container at a confirmed temperature of 35 ° C ±1 ° C, and placed in the specified position of the instrument for high-speed stirring. During the whole process, the stirrer speed should be maintained at 14000r/min±200r/min.

Determination of high speed mechanical stability of latex

Decision end point

The determination of the end point is a key step in the testing process. There are two common methods:

palmar

Every 15 seconds, a drop of latex sample is placed on the palm, and the end point is when the first condensed particles appear. In order to confirm the arrival of the end point, the mixing device can be stirred for another 15 seconds after sampling, if the condensed particles increase, it is confirmed that the end point is correct.

Water surface dispersion method

Drop the obtained sample onto a flat pan filled with 100-150ml of water. If the latex does not condense, it will disperse into a milky cloud in a few seconds. If condensation occurs, the sample will easily form condensed particles.

Scope of application

The high speed mechanical stability tester of latex is widely used in the production and research of natural latex and synthetic latex. Through the use of this instrument, users can timely and accurately evaluate the stability and quality of latex, and then guide the production process and ensure the quality and performance of the product. The high speed mechanical stability tester plays an important role in the production and development of latex products. It not only helps manufacturers to ensure product quality, but also promotes the progress and development of the latex industry.