Hydroxypropyl methyl cellulose in the building materials industry putty when the main point of attention
Various problems can occur when you produce and use putty. Today, we will talk about mixing putty powder with water, mixing with an electric drill, putty will become thin, water will separate the problem. The root cause of this problem is the addition of hydroxypropyl methylcellulose in putty powder. What should we pay attention to after adding hydroxypropyl methylcellulose?
1, the choice of hydroxypropyl methylcellulose viscosity is not appropriate, the viscosity is too low, the suspension effect is not sufficient, at this time there will be water separation phenomenon, can not reflect the uniform suspension effect.
2. Add this water-retaining agent to putty powder, which has a good water-retaining effect. When putty and water dissolve, it locks up a lot of water. At this point, a lot of water is flocculated into water clumps, which causes a lot of water to separate out, so the more you stir it, the thinner it gets and you have problems. This is a common problem that many people have encountered. You can appropriately reduce the amount of added hydroxypropyl methylcellulose or reduce the amount of added water.
3. It also has a certain relationship with the structure of hydroxypropyl methylcellulose itself. It has thixotropy, so after the addition of hydroxypropyl methylcellulose, the entire coating has a certain thixotropy, so when the putty is quickly stirred, its overall structure will disperse and this phenomenon becomes increasingly rare, but when static, it will slowly recover.
Shandong Everbright Technology Development Co., Ltd. is mainly engaged in the research and development, production and sales of cellulose ether, starch ether and pharmaceutical excipients. The company has 5 production lines, respectively 10000 tons/year E hydroxypropyl methyl cellulose, 5000 tons/year medical food grade hydroxypropyl methyl cellulose, 5000 tons/year hydroxypropyl starch ether, 10000 tons/year K hydroxypropyl methyl cellulose, 2500 tons/year medical grade microcrystalline cellulose, the existing annual production capacity of 32,500 tons. Our company's hydroxypropyl methylcellulose not only good water retention, and suspension effect is good, you can choose the right viscosity. It also has the function of preventing separation. Welcome to consult if necessary.