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Changchun Brand PVA Polyvinyl Alcohol BP-24
Polyvinyl alcohol BP24, also known as polyvinyl alcohol 2488, polyvinyl alcohol 088-50 and polyvinyl alcohol 218.
Polyvinyl alcohol BP24 powder is a white, powdery, stable, water-soluble polymer, and water is a good solvent for polyvinyl alcohol. Polyvinyl alcohol has good film-forming properties, and the formed film has excellent adhesion, solvent resistance, friction resistance, tensile strength and oxygen barrier properties. Polyvinyl alcohol has both hydrophilic and hydrophobic functional groups at the same time, so it is a substance with interfacial activity, so polyvinyl alcohol can be used as a protective colloid for polymer emulsification and suspension polymerization.
1. Description of Product
Appearance: White Powder or flakes
Solubility: Stable in almost all organic solvents. Not dissolved in animal and plant oils and grease.
2. Specifications
Items
Specification
Viscosity (mpa.s)
44-50
Acid hydrolysis degree [%(mol/mol)]
86.0-90.0
Volatile matter (%)
<5.0
Sodium acetate (%)
≤2.8
Ash (%)
<0.5
pH value
5-7
degree of aggregation
2400-2500
molecular weight
118000-124000
3. Application
Paper sizing agent
Warp sizing in textile
Adhesive
Raw material of polyvinyl alcohol panel and PVA thin film
Paint and Coatings
Medicine、cosmetic and functional materials
Emulgator and dispersing agent.
4.Main function:
Polyvinyl alcohol BP24 powder is especially suitable for use as a building mortar additive. It can be used in combination with methyl cellulose ether water-retaining agent to improve the flexibility, water retention and mortar cohesion of cement mortar. In addition, the friction of the mortar is reduced, thereby enhancing the work efficiency and quality. (Cracking and peeling of the plastering layer, increasing the adhesion strength and smoothness). 24-88 is a fine particle polymer, which is easy to disperse in cold water, can be dispersed in water, and its aqueous solution has good viscosity stability, which can meet many characteristics of cement mortar. adsorption.
5.Storage:
The material is very stable with no risk of molding and deteriorating. Under dry condition. Indefinite when protected from moisture.
5. Dissolving Method:
Pouring a certain amount of water into the dissolving tank, the water temperature should be below 30 ℃, then start the blender and pour into PVA slowly, the filling speed with PVA should be keep into 10 kilograms per minutes advisable. Confirm the PVA powder has fully dispersed (about 10-20 minutes) then heat the solution, and it can be completely dissolved when heat to 90 ℃ about 1 hour.
6. Method of analysis:
Viscosity is measured in 4% aqueous solution at 20℃. By a Brookfield type viscosimeter. PH is measured in 4% aqueous solution at 20℃ Ash expressed as Na2O.
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Main Product:
PVC Resin,
Paste PVC Resin,
Titanium Dioxide,
PVA Polyvinyl alcohol,
Carbon Black ,
Sodium Hexametaphosphate
