Low thermal conductivity 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.

Good anti-condensation performance can make the home drier in humid weather.

Does not contain APEO, low VOC content, minimizes harmful substances; low odor, safe and reliable, is a true environmentally friendly interior wall latex paint with low thermal conductivity.

Purpose and usage

This product is mainly used in architectural decoration.

Recipe details

Production Method

Take water at a speed of 400~700r/min.

Disperse at 1000~1300r/mim speed for 20~30min; quality inspection sampling inspection fineness ≤60um; at 300~600r/min speed, add film-forming aids, bactericidal and antifungal agents according to changes, disperse for 5min, then Put in pH adjuster ammonia water, disperse for 5 minutes; take samples for quality inspection; filter and pack after passing the test.

Precautions

The proportion of each component of this product is: 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 poly internal enolate sodium salt 731A.

The thickener is selected from one or more mixtures of hydroxyethyl cellulose 250HBR, QP-1500H, 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, 265 produced by American Gas Chemical, Dow Chemical, and German Clariant Company.

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, Sol’s Actiodemw, and Sol’s Acticdeepw.

Technical Principle

This product uses 3M hollow glass microspheres with good heat preservation effect.
It is a hollow, thin-walled, hard and light sphere with the highest strength/density ratio, suitable for a variety of process conditions, excellent heat resistance, weather resistance, corrosion resistance and waterproof performance, and can be used as energy-saving heat insulation Paint selection.

First of all, the coating film made from the multi-combination arrangement of hollow glass microspheres can highly reflect the solar heat in the visible light and near-infrared region in the 400-1800nm ​​range, and at the same time introduce air micropores with extremely low thermal conductivity into the coating film.
Layer to isolate the transfer of heat energy.

In this way, it encounters the significant resistance of enhanced reflection of solar heat and convective transfer, which 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 20℃;

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 are filled with a larger volume.
The gap between the large microspheres.
It increases the solid content, reduces the VOC, and reduces the cost at the same time.

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

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 is cast with any solvent or plasticizer to form a film with 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-in line
• Construction of: two brushing no barriers hinder - -
• Low temperature stability: no deterioration-in line
• Drying time (surface drying)/h: ≤2 – –
• Coating external regulations: normal-in line
• Contrast ratio (white and light color): ≥0.
  95 0.
  97 0.
  955
• Alkali resistance: 24h without exception – –
• Scrubbing resistance/time: ≥5000 – >20000