Chuangyao biology teaches you how to identify the quality of redispersible latex powder

Now the quality of redispersible latex powder in the domestic market is uneven. How to identify the quality of redispersible latex powder simply and quickly? Shandong chuangyao Biotechnology Co., Ltd. specially summarized some simple experiments for the identification of redispersible latex powder

1. Observation appearance method

Redispersible latex powder is white powder, which can flow freely without impurities, no caking and uniform particles.

2. Dissolution method

Take a certain amount of redispersible latex powder and dissolve it in water with 5 times of mass. After full stirring, stand for 5 minutes and observe. In principle, the less impermeable matter precipitated in the bottom layer, the better the quality of redispersible emulsion powder. This method is simple and easy to operate;

3. Ash method

Take a certain amount of redispersible emulsion powder, weigh it, place it in a metal container, raise the temperature to about 500 ℃, after burning at 500 ℃, cool to room temperature, and weigh again. Light weight and good quality;

4. Iodine solution color test

Because some bad manufacturers in the rubber powder mixed with starch, when iodine solution encountered starch will turn blue;

5. Film forming method

Take a certain mass of redispersible emulsion powder, dissolve it in twice the water, stir it evenly, then let it stand for 2 minutes, then stir it evenly again, pour the solution on a flat clean glass, and the glass is placed in a ventilated and shady place. After drying, remove. Observe the removed polymer film. High transparency, good quality. Then pull moderately, good elasticity and good quality. Then the membrane was cut into strips, soaked in water, observed after 1 day, the quality of less dissolved in water was good. This method is more objective.

Shandong chuangyao Biotechnology Co., Ltd. is a professional manufacturer of hydroxypropyl methyl cellulose and redispersible latex powder. The company can provide samples and technology for you to do experiments free of charge. For more questions, please go to the official website of Shandong chuangyao Biotechnology Co., Ltd.