At temperatures above 0 Kelvin degree， all objects are able to exchange heat by radiating and absorbing thermoelectric magnetic waves.Because of the existence of temperature difference, objects release heat by radiating thermoelectric magnetic waves.This phenomenon is called infrared thermal release or thermal ray release.。Normal thermal radiation mainly depends on visible and infrared light of longer wavelengths to spread.At the temperature lower than 300℃, objects radiate heat by the far-infrared.At the temperature from 300℃ to 800℃, objects radiate heat by the middle-infrared.At the temperature higher than 800℃, objects radiate heat by the near-infrared.
In the research on heat release at a high temperature,it is found that the form of heat exchange is mainly conduction and convection at a temperature lower than 800℃. Meanwhile, the far-infrared and middle-infrared(Mid-IR) are generated to radiate heat. When the temperature is higher than 800℃, the main form of heat exchange is radiation and the near-infrared is generated to radiate heat. The three kinds of infrared ray are generated at different temperature. The wavelenth of the near-infrared is 1-3μm while the wavelenth of Mid-IR is 3-40μm, and the wavelenth of the far-infrared is 40-1000μm.
Having studied infrared for a long term, the ZSWH coating laboratory discover that far-infrared has a strong ability of penetration and radiation, which results in obvious temperature-control effect and resonance effect. The Mid-IR has a strong ability of penetration and dipole. The molecular vibration aggravate at a high temperature.The non resonance generated by high speed molecular vibration makes the molecule transit from the ground state to a high energy level.In this process, a near-infrared ray with strong penetration ability and thermal radiation is generated. According to the above characteristics of infrared, infrared reflection, infrared shielding, infrared conversion and other ways can be taken to weaken the transmission efficiency of the infrared and the conduction radiation from high temperature to low temperature.
The membrane-forming material of the product is specially modified inorganic aqueous emulsion. The filler of the product is made of titanium oxide, spinel, micro alumina powder, high-boron alpha scale quartz, and yttrium oxide and lanthanum oxide. The particle diameter of all the filling material is shorter than 5μm. The single component of the coating is absolutely inorganic and aqueous. The coating that has firmed up can resist high temperature up to 1800℃.
The coating has advantages of high thermal reflectivity, high hardness, high adhesion, resisting impact of flame and high temperature, resisting scouring, resisting acid or alkali corrosion, resisting corrosion in oxygen atmosphere at a high temperature. Even the coating is used at a high temperature for a long term, it does not change color and there is no pulverization. The overall coating can enhance the thermal radiation barrier of the thermal barrier system to reduce heat loss and save energy. This prolongs the service life of equipment.
By being coated with ZS-233, heat absorption efficiency of objects are greatly reduced. heat absorption amount is also reduced. Meanwhile the thermal barrier of objects is increased to reduce heat loss and energy consumption. As a result, equipment and staff are protected.
Performances:
①The coating is water-based coating with single component. It can be sprayed, brushed, roller coated, dip coated, irrigated onto objects. The operating is very easy.
②The coating can resist temperature up to 1800℃ and its coating layer is smooth and full with high whiteness. In the surrounding of high temperature or corrosion of acid and alkali, its color value does not change too much and the relative stability is high.
③Specially treated by of the ZS-233 coating, the materials have high rates of reflection, shielding and radiation of the infrared electromagnetic waves at different temperatures. This effectively reduces the heat absorption rate of the materials and the quantity of spread heat transmission in unit time. Meanwhile, this also increase the thermal resistance of the materials and the rates of reflection, shielding, radiation to the infrared.
④The hardness of the coating layer is high and it can resist compression and abrasion, with a high adhesion.The coating can be coated on both the outer surface and inner surface of equipment or materials.
⑤Since the coating layer is compact, it can well isolate oxidizing atmosphere and prevent infiltration or erosion of corrosive matters at a high temperature. This can effectively reduce oxidation and corrosion of materials at a high temperature, to protect the continuity of various performances of materials and extend their using time.
⑥Since the coating is a kind of aqueous, inorganic and ceramic material, there is no harmful substance generated. It can be coated onto all kinds of inorganic materials to effectively reduce thermal transmission and conduction. The coating is a kind of eco-friendly material which is of high-tech and can save energy.
| resisting temperature: |
≤1800℃ |
coating property: |
inorganic and aqueous |
| density(wet): |
1400Kg/m3 |
appearance: |
white and one-component |
| hardness: |
6 H |
adhesion: |
grade 1 |
| Linear expansion: |
8×10－6/℃ |
suggested thickness: |
0.15-0.3㎜ |
| compactness |
high |
appearance of coating layer |
smooth and self-cleaning |
| bonding strength: |
8Mpa |
pliability |
≤1㎜ |
| compression strength: |
≤60Mpa |
bending strength: |
≤2Mpa |
| acid-proof & alkali-proof |
oxidized and corroded at a high temperature |
waterproof: |
Best after being sintered |
| VOC content: |
0 |
flash: |
N/A |
The infrared barrier parameters of ZS-233 change at different temperature
(The medium is air and the pressure is 1 ATM) |
| testing the infrared parameters of the coating |
reflectivity (%) |
Shielding rate (%) |
Radiation rate(%) |
high temperature affecting coating |
| The coating heated at 300℃ |
0.83 |
0.05 |
0.52 |
the coating does not change |
| The coating heated at 500℃ |
0.80 |
0.09 |
0.57 |
the coating does not change |
| The coating heated at 800℃ |
0.75 |
0.15 |
0.65 |
the coating does not change |
| The coating heated at 1000℃ |
0.67 |
0.21 |
0.73 |
slight discoloration |
| packing material |
iron drum |
| wall thickness |
0.5mm |
| highest stacking layer |
5 layers |
| bucket upper diameter |
Φ300mm |
| bucket lower diameter |
Φ280mm |
| height |
330mm |
| net weight of coating |
20kg |
| trademark |
ZS |
1) ZS-233 coating can be directly brushed onto the surfaces of all kinds of fireproof materials at a high temperature, direct contacting with flame, induction heating, electromagnetic launcher, high-temperature air, high-temperature flue gas, high-temperature materials, in order to reduce the conduction of high-temperature materials and the infrared, the thermal absorption of high-temperature materials in unit time, and increase the thermal resistance of materials.It can also be used together with ZS-1061 coating, coated onto the inner surfaces of kilns at a high temperature, in order to function the best performances of these 2 coatings to achieve a better effect of saving energy.
2) The coating can be brushed onto the middle layer of fireproof materials, reducing the thermal absorption of high-temperature materials, in order to increase anti-radiation, thermal radiation and thermal shielding of materials. This promotes to achieve a balance of thermal conduction between materials in a small space.
3) The coating can be used as a protective coating for high- temperature fireproof materials to improve their performances of anti-oxidation and anti-corrosion.
