Ceramic granules with high UV opacity and high solar reflectance
AssigneeShijiazhuang Nikka Mintech Co., Ltd.
InventorsZhijie Li, Hongwei Lu
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Abstract
The invention relates to ceramic granules with a high UV opacity and high solar reflectance, which is produced by forming a calcined clay mineral powder into green body and re-calcining, featured with a water absorption of 15-35%; ≥97% crystalline content and 90-100% UV opacity. The invention further relates to a method for preparing ceramic granules with a high UV opacity and high solar reflectance and the use thereof for reflectance-improving application on building surface for the purpose of energy conservation.
Claims18
Ceramic granules having a high UV opacity and high solar reflectance, produced by forming a calcined clay mineral powder into a green body and re-calcining the green body at a temperature of from 1100-1400° C. and crushing the calcined material, wherein the ceramic granules obtained by the crushing step are characterized by:
- ≥97% crystalline content;
- 90-100% UV opacity;
- and
- a solar reflectance of between 82% and 90%.
Ceramic granules having a high UV opacity and high solar reflectance, produced by forming a calcined clay mineral powder into a green body and re-calcining the green body at a temperature of from 1100-1400° C. and crushing the calcined material, wherein the ceramic granules obtained by the crushing step are characterized by:
- ≥97% crystalline content;
- 90-100% UV opacity;
- and
- the resultant ceramic granules have a solar reflectance of from 75% to 85% when applied to asphaltic substrate at a coverage of 90% or more.
Ceramic granules having a high UV opacity and high solar reflectance, produced by forming a calcined clay mineral powder into a green body and re-calcining the green body at a temperature of from 1100-1400° C. and crushing the calcined material, wherein the ceramic granules obtained by the crushing step are characterized by:
- ≥97% crystalline content;
- 90-100% UV opacity;
- and
- the resultant ceramic granules have a solar reflectance of between 80% and 90% when applied to the surface of a polyurethane foam substrate at a coverage of 90% or more.
A stone texture for a building surface comprising:
- ceramic granules having a high UV opacity and high solar reflectance, produced by forming a calcined clay mineral powder into a green body and re-calcining the green body at a temperature of from 1100-1400° C. and crushing the calcined material, wherein the ceramic granules obtained by the crushing step are characterized by:
- ≥97% crystalline content;
- 90-100% UV opacity;
- and
- a solar reflectance of between 82% and 90%.
Dependencies are inferred from the claim text.