1. Types and selection of raw materials for ordinary putty paste
(1) Heavy calcium carbonate
(2) Hydroxypropyl Methyl Cellulose Ether (HPMC)
HPMC has high viscosity (20,000-200,000), good water solubility, no impurities, and better stability than sodium carboxymethylcellulose (CMC). Due to factors such as price reduction of upstream raw materials, overcapacity, and intensified market competition, the market price of HPMC Since it is added in less amount and the cost is not much different from that of CMC, HPMC can be used instead of CMC to improve the quality and stability of ordinary putty.
(3) Plant-type dispersible polymer powder
dispersible polymer powder is a high-quality plant-based dispersible polymer powder, which has the characteristics of environmental protection and health, good stability, anti-aging, and high bonding strength. The measured bonding strength of its aqueous solution is 1.1Mpa at a concentration of 10%. .
The stability of RDP is good. The test with aqueous solution and the sealed storage test of aqueous solution show that its aqueous solution can maintain the basic stability of 180 days to 360 days, and the powder can maintain the basic stability of 1-3 years. Therefore, RDP -2 The quality and stability are the best among the current polymer powders. It is pure colloid, 100% water-soluble, and free of impurities. It can be used as a high-quality raw material for ordinary putty powder.
(4) Original diatom mud
Mountain native diatom mud can be used to make light red, light yellow, white, or light green zeolite powder of the original diatom mud itself, and can be made into an elegant colored air-purifying putty paste.
(5) Fungicide
2. Production formula of ordinary high-quality interior wall putty paste
Raw material name Reference dosage (kg)
Normal temperature clean water 280-310
RDP 7
Hydroxypropyl methylcellulose (HPMC, 100000S) 3.5
Heavy calcium powder (200-300 mesh) 420-620
Primary diatom mud 100-300
Water-based fungicide 1.5-2
Note: Depending on the function and value of the product, add an appropriate amount of clay, shell powder, zeolite powder, tourmaline powder, barite powder, etc.
3. Production equipment and technology
(1) First mix RDP, HPMC, heavy calcium powder, primary diatom mud, etc. with a dry powder mixer and set aside.
(2) During formal production, first add water to the mixer, then add water-based fungicide, turn on the special mixer for putty paste, slowly put the pre-mixed powder into the mixer, and stir while adding until the powder All dispersed into a uniform paste state.
4. Technical requirements and construction technology
(1) Grassroots requirements
Before construction, the base layer should be strictly treated to remove floating ash, oil stains, looseness, pulverization, bulging, and hollowing, and to fill and repair cavities and cracks.
If the flatness of the wall is poor, special anti-crack mortar for interior walls can be used to level the wall.
(2) Construction technology
Manual plastering: as long as the base layer is a cement wall that is basically flat, free of powder, oil stains, and floating dust, it can be directly scraped or troweled.
Plastering thickness: The thickness of each plastering is about 1mm, which should be thin rather than thick.
When the first coat is dry until it is not sticky, then apply the second coat. Generally, the second coat survives.
5. Matters needing attention
(1) It is strictly forbidden to apply water-resistant putty to ordinary putty after scraping or wiping ordinary putty.
(2) After the ordinary putty is completely dry, the latex paint can be painted.
(3) Ordinary putty powder cannot be used in frequently dark and humid places such as toilets, basements, bathrooms, car washes, swimming pools, and kitchens
Post time: Dec-08-2022