Types of interior wall putty
Interior putty is a material used for interior wall painting support. Compared with exterior wall putty, there are fewer varieties of interior wall putty, and the requirements for its physical and mechanical properties are not as high as those for exterior wall putty. However, the requirements for interior putty in terms of easy scraping and the fineness of the putty film are higher. In addition, for the same building, the area to be painted on the inner wall is much larger than that on the outer wall, so the actual amount of putty used on the inner wall is also larger than that on the outer wall.
According to the application characteristics and the main physical and mechanical properties of the putty film, interior wall putty can be divided into general, flexible, and water-resistant types in three categories. General-type putty is suitable for general interior decoration projects, indicated by the symbol Y; flexible-type putty is suitable for interior decoration projects with certain anti-cracking requirements, indicated by the symbol R; water-resistant-type putty is suitable for interior decoration projects requiring water-resistant and high bonding strength, indicated by the symbol N. Next, we will first discuss the formula and considerations of general-type interior wall putty powder.
Interior wall putty powder
| raw materials | illustrate | Weight: kg |
| Calcium Carbonate | Fineness: above 120 mesh | 1000 |
| CMC | carboxymethylcellulose | 8-10 |
| @starch | @pregelatinized starch | 2-3 |
| CMS | Carboxymethyl Starch | 3 |
| Bentonite | Fineness: above 120 mesh | 10-30 |
- Calcium Carbonate: 1000 kilograms (stone powder, double fly powder, quartz powder can be)
- CMC (Carboxymethyl Cellulose): 8 to 10 kg (according to the viscosity of cellulose quality adjustment)
- Pre-gelatinized Starch: 2 to 3 kg (corn pre-gelatinized recommended 3 kg, cassava pre-gelatinized 2 kg)
- CMS (Carboxymethyl Starch): 3 kilograms
- Bentonite:10 to 30 kg (optional)
The above recipe is one that everyone can master. Below I will analyze the specific meaning of this recipe in detail. First of all, both CMS and bentonite can be added selectively. That is to say, even if you don’t add them, you can still make qualified wall putty powder, but after adding CMS, the workability of wall putty powder will become lighter, and the workers will save effort. And the addition of bentonite can increase the anti-sagging property of putty powder. Therefore, they can be added selectively. The biggest disadvantage of this formula is that it may react with water-resistant putty for interior walls, so our technical engineers have optimized it and come up with a better second-generation wall putty powder formula:
Interior wall putty powder-Ⅱ
| raw materials | illustrate | Weight: kg |
| Calcium Carbonate | Fineness: above 120 mesh | 1000 |
| Composite masterbatch | 12.5 |
- Calcium carbonate: 1000kg
- Interior wall putty powder masterbatch: 5kg
It is optimized and updated for all the first-generation putty powder formulas.
Advantage 1: Simple production process. (The first generation needs 5 kinds of raw materials, and the second generation only needs 1 kind)
Advantage 2: The second-generation formula does not react with any substance and is more adaptable. Its PH value is about 7, which is neutral, while the first generation is alkaline.
Advantage 3: The constructability advantage is especially obvious, and the worker master saves labor. This is also the most advantageous point.
Advantage 4: excellent water retention. The first-generation formula absorbs and retains about 350 milliliters per kilogram, while the second generation can reach 400 to 430 milliliters, greatly improving the water retention rate.