The role of hpmc in Putty Powder and related HPMC property

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1.How much viscosity of HPMC generally used in Putty Powder ?

Answer:100,000 Viscosity for Putty Powder

• Cement mortar have a higher requirements ,150,000 Viscosity will be better .
• The most important role of HPMC is water retention ,and then thickening .
• For putty powder ,we need pay more attention on the water retention property In the condition of Viscosity lower than 100thousand ,the viscosity is larger, the relative water retention is better, but when the viscosity is more than 100 thousand, the influence of viscosity on the water retention is a little .

2.What is the Main Technical Data of hydroxypropyl methyl cellulose (HPMC)?

Answer: Hydroxypropyl content and Viscosity.

Higher Hydroxypropyl content generally means good water retention.High viscosity means good water retention, In cement mortar application we recommend high viscosity HPMC,Such as :150,000 to 200,000 Viscosity .

3.Which factors affect the gel temperature of hydroxypropyl methyl cellulose ?

HPMC gel temperature is related to its Methoxy Content, as the lower the methoxy content decrease , the gel temperature will increase .

4.The putty powder falls apart,is there any relationship with HPMC?

• Putty powder drop powder is mainly related to ash calcium quality, normally no relationship with HPMC.
• Lower Ash calcium content or ash calcium CaO, Ca(OH)2 ratio not correct, will cause powder drop.
• HPMC will not take participate any chemical reactions,but poor water retention of HPMC also will causes wall putty drop powder.

5.Why HPMC have a bad smell ?

Generally speaking,purity of HPMC is a kind of colourless and odourless white powder,but some HPMC have a bad smell ,what is the reason ?

When HPMC is produced by Solvent production method ,Toluene and isopropyl alcohol are normally used as solvents , in the final period of production, if not washed well ,the will be some pungent smell remaining.

6.How to choose the right hydroxypropyl methyl cellulose (HPMC) by application ?

• Putty powder: Normally requires a low Viscosity , 100 thousand is enough, the most important thing is good water retention.
• Cement and mortar: relatively high viscosity requirements, 150,000 Viscosity .
• Adhesive glue: Instant type of HPMC with High Viscosity :150,000~200,000
• Laundry detergent/ Shampoo:Instant type of HPMC with high viscosity :200,000

7.Why lot of bubbles in your putty powder?

HPMC in putty powder, thickening, water retention and construction of three roles. Not participating in any reaction.

• Too much water in the mixing ratio
• Scrap Wall putty in the condition that the bottom layer is not complete dry.

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8.HPMC viscosity and temperature relationship?

Answer : The viscosity of HPMC is inversely proportional to temperature, that is to say,the viscosity increases with the decrease of temperature. When we talk about the viscosity of a HPMC product,we're talking about the viscosity tested in the condition of 2% aqueous solution at 20 degrees Celsius.

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Wall putty is a very common construction product in our daily life. Wall putty plays a pivotal role in achieving a flawless wall finish. Everyone deals with putty after living in a new house. Especially when making house repairs, some putties become fluid when scraped onto the wall, while others will hold steady when scraped onto the wall. There are many reasons for these two situations, and adding hydroxypropyl methylcellulose is one of them. Today Kemox will explain the details of the experiment on adding HPMC products to wall putty.

Why HPMC?

Before we dive into the experiments, let&#;s talk about why HPMC is a key ingredient in the construction industry, especially in the putty industry. More than just a filler, HPMC is a performance enhancer that improves consistency, water retention and workability. We can think of it as the secret ingredient for making quality putty.

Preparation

The experiment begins with the preparation of the putty mixture. In the world of construction chemicals, the right proportions are critical to getting the best results. It&#;s like a symphony; the sounds from each instrument need to be in perfect harmony. If you are unsure of the proportions of your additives, contact Kemox.Once the chemicals are in place, they need to be mixed thoroughly. Then water is added according to the specified proportions. This step ensures that the putty reaches the right consistency.

Mixing is the heart of the process

Now we transfer the mixture to a larger bucket, ready for some mechanical manipulation. We use a blender to mix the putty to a smooth, lump-free consistency. If the consistency doesn&#;t feel like it&#;s thick enough, you can mix it a little longer. After sufficient mixing, the putty was ready for the real test.

The test and the results

Take a look at the results of our experiment. We want to observe the texture, consistency and workability of the putty. With the addition of HPMC, these properties are not only enhanced but also changed. It&#;s kind of appetizing to look at the putty we produced. When we scraped the putty onto the wall, it was easy to see that it was very smooth, free of pits and eyes, and easy to handle. The reason for this result is the right mixing ratio on the one hand, and the addition of HPMC on the other.

The proof is in the putty

Adding HPMC to wall putty is not just a step in the process, it&#;s a leap in quality. The details of the experiments we have discussed today highlight the importance of precision, care and correct dosing. So the next time you put your hands on a perfectly smooth wall, remember what science and experimentation have done to achieve a seamless finish.HPMC may be just a few letters on the page of a book, but in the world of wallcoverings putty, it&#;s an important ingredient that deserves the attention it gets.

If you want to learn more, please visit our website HPMC For Wall Putty.