With low thermal conductivity-environmental protection interior wall latex paint formula check

Formulation characteristics

This product has the functions of heat preservation and heat insulation, and has the energy-saving effect of "warm in winter and cool in summer".

The density is lighter, which can reduce transportation costs.

No need to add ethylene glycol, propylene glycol and other substances to reduce the harm to the body and the environment.

Application field

This product is mainly used in architectural decoration.

Recipe details (parts by mass)

Production Method

Take water, add dispersant, thickener, wetting agent, and defoamer in turn at 400~700r/min, and disperse for 5min; at 600~1000r/min, add pigments, fillers, and hollow glass microspheres in turn.

Precautions

The proportion of each component of this product is in the range of: water 20~30, dispersant 0.

The dispersant is selected from one or more mixtures of polyacrylate sodium salt 5040, polycarboxylate ammonium salt 5027, polyacrylate ammonium salt GA-40, and modified polyacrylate sodium salt 731A.

The thickener is selected from one or more mixtures of hydroxyethyl cellulose 250HBR, QP-15000H, ER-52M, solvent-free non-ionic polyurethane thickener 420, and RM-8W.

The wetting agent is selected from one or more mixtures of DC-01, SA-8, SA-9, 407, and 265 produced by American Gas Chemical, Dow Chemical, and Clariant of Germany.

The defoamer is selected from Corning's A-10 and A-34.

The pigment and filler are one or more mixtures of titanium dioxide, heavy calcium carbonate powder, kaolin, and talc.

The hollow glass microspheres are one or more mixtures of glass microspheres S-38 and S-15 manufactured by 3M Company.

The film-forming substance is Celanese 1608.

The pH adjusting agent is selected from at least one of 28% ammonia water and AMP-95 of Dow Chemical.

The bactericidal and antifungal agent is any one of Rohm and Haas LXE, Thor’s Acticidemv, and Thor’s Acticideepw.

The technical principle of this product: This product uses 3M hollow glass microspheres with good thermal insulation effect.

First of all, the coating film made by the multi-combination arrangement of hollow glass microspheres can highly reflect the solar heat in the visible light and near-infrared region in the range of 400~1800nm, and at the same time attract air microbes with extremely low thermal conductivity in the coating film.
Hole layer to isolate the transfer of heat energy.

In this way, by strengthening the significant resistance of reflected solar heat and convective transfer, it can effectively reduce radiant heat transfer and convective heat transfer, thereby reducing the heat balance temperature of the surface of the object, the heat reflectivity is 90%, and the thermal conductivity is 0.
03W/(m .
K).

It can effectively suppress the radiant heat of sunlight and infrared rays, and the heat insulation suppression efficiency can reach about 90%.
The temperature of the radiated surface can be reduced by more than 30% in the open sun, and the maximum temperature drop can reach more than 20C;

It can also suppress the heat radiation and heat loss of high-temperature objects.
It can maintain 70% of the indoor heat.
It can effectively keep the low-temperature objects cold and suppress the loss of cooling caused by environmental radiation heat, which can prevent condensation from occurring.

Secondly, compared with fillers of other shapes, 3M hollow glass microspheres have the smallest surface-to-volume ratio and low oil absorption, which can reduce the amount of resin and increase the amount of fillers, and the smaller-volume microspheres fill a larger volume.
The space between the microspheres increases the solid content, reduces the voC, and also reduces the cost.

Third, compared with other irregularly shaped fillers, 3M hollow glass microspheres can roll like steel balls in a bearing, thus reducing the viscosity and internal stress of the product.

Moreover, the lightweight 3M hollow glass microspheres can occupy more volume than ordinary fillers of the same quality, which means that when considering the unit volume cost, the formula (parts by mass) is optimized after the 3M hollow glass microspheres Can reduce costs.

The thickener can be selected from one or more mixtures of hydroxyethyl cellulose 250HBR, QP-15000H, ER-52M, solvent-free non-ionic polyurethane thickener 420, and RM-8W.

Due to the extremely low VOC content of the above-mentioned substances, the VOC content of the environmentally friendly interior wall latex paint with low thermal conductivity can be minimized, and the damage to the human body and the environment can be reduced.

The selected wetting agent does not contain APEO and has zero VOC, so the VOC content of the environmentally friendly interior wall latex paint with low thermal conductivity can be minimized, and the damage to the human body and the environment can be reduced.

The defoamer is selected from Corning’s A-10 and A-34.
This type of product is a new type of defoamer synthesized with a special molecular structure defoaming substance and polysiloxane, which has lower VOC content and stronger Long-lasting defoaming ability.

The film-forming material is Celanese 1608, which is a non-plasticized water-dispersed VAE emulsion based on a copolymer of ethylene and vinyl acetate.
The emulsion does not have any solvents or plasticizers to form a film by itself, and has low odor.
There is no need to add antifreeze, and it has a good performance in freezing and thawing.

Quality Index

Item: Standard No.
1 No.
2

• State in the container: no lumps, uniform state after mixing
• Constructability: Two-pass brushing without barriers
• Low temperature stability: no deterioration
• Drying time (surface drying)/h: ≤2
• Appearance of coating film: normal
• Contrast ratio (white and light color): ≥0.
  95 0.
  97 0.
  955
• Alkali resistance: 24h without exception
• Scrubbing resistance/time: ≥5000> 20000