The dry heart of Chinese cabbage is also known as heart rot and marginal rot, commonly known as "focal edge", "sandwich" and so on. It is a kind of physiological disease. More than the beginning of the rosette period and the heart-filling period, the damaged leaves are mostly in the middle of the leaf ball, and often there is a diseased leaf in several layers of robust leaves. Not only in the growth period, but also in the storage period, it can continue to develop and seriously affect the quality of Chinese cabbage.
The lack of water-soluble calcium in Chinese cabbage is the direct cause of dry heartburn. In addition, the high concentration of soil solution, excessive nitrogen fertilizer application, dry weather, improper saline-alkali or irrigation water, and poor water quality are the causes of dry heartburn. In recent years, the analysis of the components of Chinese cabbage disease and healthy plants showed that there was no obvious regularity in the calcium content of Chinese cabbage plants with and without dry heartburn, but the manganese content was significantly different. Very low, therefore, the lack of active manganese in the soil is also a major cause of dry heartburn.
In addition to adopting scientific and rational fertilization, strengthening field management, and supplementing calcium fertilizer, it is also possible to spray 0.7% manganese sulfate solution and spray 1 time each in the seedling stage, rosette stage, and the filling period. Manganese sulfate 450 g (50 kg water).
I. Introduction
Papermaking dry strengthen agent is our company`s new and self-developed products that using imported raw materials. Its mechanism of action is: dry strength agent use polymer mesh structure to increase hydrogen bonding number in the mutual area of fiber to fiber. Dry strength agents in the combination area of long-chain polymers can be deformed, thus increasing the bond toughness. It could improve paper strength by the bridging ability formed by chemical function to make fibers and fibers have "implicated"
II. Technical indicators
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Name |
Dry strength agent |
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Appearance |
Colorless viscous liquid |
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Solid content% |
15%±1% |
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Viscosity mpa.s(25℃) |
3000-13000 |
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PH value |
3.5-5.0 |
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Storage period (normal temperature) days |
3months |
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Note: PH value is adjustable according to user requirements |
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III. Function
The dry strength agent is not only a good enhancement, but it also has a higher enhancement effect in waste papers with more fine fiber filler. The use of our dry strength agent can improve paper quality, and it also significantly increase production efficiency, reduce costs and increase economic efficiency.
IV. Method of Application and Notes
1. When diluted with clean water, the dilution multiples of our product is generally about 15 to 30 times. After the product was stirred sufficiently, add uniformly to the slurry in an amount of 5 ~ 10 kg / ton.
2. Adding position that selected could have a full contact with the slurry. Generally choose ingredients pool, high box or import pump.
3. Use a plastic or stainless steel as the material for products storage, dilution tank, piping etc.. Iron-based material will produce corrosion and thickening phenomenon will occur.
4. Do not mix with Other Chemicals.
V. Packing
1000 kg barrels, or according to user requirements.
Dry Strength Agent,DSR,Dry Strength Additive,Chemicals Dry Strength Agent
Shandong Tiancheng Chemical Co., Ltd. , https://www.akdchemical.nl