PRODUCT
- 400-085-9099
- bentonite@zjhuate.com
- www.zjhuate.com
- Zhejiang province Anji County high Yu Zhejiang Tianzi Lake modern industrial park
Rheopectic assistant and water repellent for Dry Mixed Mortar WT-Y
WT-Y is a rheopectic assistant and water repellent for dry pre-mixed mortars and emulsion based systems.
1. Introduction:
WT-Y bentonite used in dry mixing mortar is made from high grade natural bentonite (the main content is montmorillonite), which is combined with polymer after modification. It is mainly used to control the thickening, anti-sagging and water retention properties. It owns advantages of less dosage, good water retention, strong thixotropy and excellent anti-sagging property.
Comparing with cellulose ether which is popularly applied in dry mortar, it has better anti-sagging property and easier in application. The application of WT-Y can reduce water content of the system. The water-reducing agent can be eliminated or greatly reduced in quantity in mortar formulation. Besides, WT-Y has apparent price advantage and even reduce the danger may be caused by using organic substance like cellulose ether.Thus it is good for the environment.
2. Physical Index
3. Application& Dosage
Powder Addition, dosage depends on the formulation system. Usually it takes 0.4-1.0% of the total system
4. Application example
Table 1 :Thin plaster test formulation
Note ：The granularity of No.6 quartz sand is 30-70mesh while the granularity of No.7 quartz sand is 70-120mesh；Each 1kg of powder requires 241ml water
Table 2: Test results of comparing Chinese cellulose ether, WT-Y , Competitor A
Using cellulose ether as bentonite, both the anti-sagging and thixotropic performance is not good enough. Using WT-Y as bentonite, in case the water amount remains the same, the anti-sagging performance and the thixotropic performance can be improved greatly. In case the water retention and thixotropic performance keeps the same, reduce the water content to 90% against the original will make the anti-sagging property of mortar better. Using Competitor A and cellulose ether together ,the best indexes of mortar can be reached, but Competitor A is expensive, and cannot be used alone, which make it difficult to be widely used.
WT-Y bentonite used in dry mixing mortar is made from high grade natural bentonite (the main content is montmorillonite), which is combined with polymer after modification. It is mainly used to control the thickening, anti-sagging and water retention properties. It owns advantages of less dosage, good water retention, strong thixotropy and excellent anti-sagging property.
Comparing with cellulose ether which is popularly applied in dry mortar, it has better anti-sagging property and easier in application. The application of WT-Y can reduce water content of the system. The water-reducing agent can be eliminated or greatly reduced in quantity in mortar formulation. Besides, WT-Y has apparent price advantage and even reduce the danger may be caused by using organic substance like cellulose ether.Thus it is good for the environment.
2. Physical Index
| Appearance | White free flowing powder |
| Volatile content(2hr,105℃),% | ≤10% |
| Granularity(＜0.076mm),% | ≥95% |
3. Application& Dosage
Powder Addition, dosage depends on the formulation system. Usually it takes 0.4-1.0% of the total system
4. Application example
Table 1 :Thin plaster test formulation
| Raw material name | Cement | No.6 quartz sand | No.7 quartz sand | Powder latex |
Bentonite WT-Y |
| Composition% | 35.4 | 30.6 | 30.6 | 3.0 | 0.4 |
Table 2: Test results of comparing Chinese cellulose ether, WT-Y , Competitor A
|
Bentonite types&dosage |
Dosage against water content comparing to original one/% | Water Retention/% | Anti-sagging/mm | Thixotropic property | ||
|
6rmp viscosity/cp |
60rmp viscosity/cp |
Thixotropic index | ||||
| cellulose ether 0.4% | 100 | 99.95 | 2 | 279333.33 | 65866.67 | 4.24 |
| WT-Y 0.4% | 100 | 99.95 | 1 | 201333.33 | 37666.67 | 5.35 |
| WT-Y 0.4% | 80 | 99.81 | 0 | 288000.00 | 54000.00 | 5.33 |
|
Competitor A 0.2% cellulose ether 0.2% |
100 | 99.97 | 0 | 428666.67 | 58400.00 | 7.34 |
| Competitor A 0.4% | 100 | 96.19 | Mortar is not gluing to a concrete slab ,can’t be applied | 79333.33 | 5133.33 | 15.45 |
Using cellulose ether as bentonite, both the anti-sagging and thixotropic performance is not good enough. Using WT-Y as bentonite, in case the water amount remains the same, the anti-sagging performance and the thixotropic performance can be improved greatly. In case the water retention and thixotropic performance keeps the same, reduce the water content to 90% against the original will make the anti-sagging property of mortar better. Using Competitor A and cellulose ether together ,the best indexes of mortar can be reached, but Competitor A is expensive, and cannot be used alone, which make it difficult to be widely used.
