Things to note when using HPMC with putty powder

When using HPMC (hydroxypropyl methylcellulose) as an additive to putty powder, there are some things to note:

Dissolve the mixture: Add HPMC to an appropriate amount of water and stir well until completely dissolved. Avoid adding HPMC directly into the dry powder to avoid clumps or uneven dispersion.

Adding order: Determine the order in which HPMC is added based on your putty recipe. Normally, water is added to the tank first, then putty powder and other additives are gradually added while stirring, and finally the dissolved HPMC solution is added.

Stirring time: After adding the HPMC solution to the putty powder, sufficient stirring is required to ensure that it is evenly dispersed. The mixing time should be long enough to ensure that the HPMC is thoroughly mixed with the other ingredients and to avoid unevenness or clumps.

Pay attention to humidity control: HPMC can quickly absorb water and swell in water, so the humidity of the putty needs to be controlled during use. Excessive humidity may cause the putty to lose its bonding ability or affect its construction performance.

Impact of pH value: HPMC is sensitive to pH value, and different pH values may affect its solubility and gelling properties. Make sure the mix ratio and pH are appropriate for your application needs and follow the recommendations in the HPMC Instructions for Use.

Most importantly, before using HPMC or any other additive, try to contact the supplier to understand the factors affecting the HPMC product.