FOB Price
أحصل على آخر سعر2200 / Tonne
|Minimum Order
Place of Origin:
China
Price for Minimum Order:
Minimum Order Quantity:
1 Tonne
Packaging Detail:
25 kg/bag or according to requests
Delivery Time:
in three weeks
Supplying Ability:
3000 Tonne per Month
Payment Type:
L/C, T/T
الشخص الذي يمكن الاتصال به trista
No.5 Floor 31,No.38 Ruyi Road,Shahekou Distric, Dalian, Liaoning
Polyvinyl alcohol has excellent film forming, , and properties. It is also resistant to oil, grease and .
It is odorless and nontoxic. It has high tensile strength and flexibility, as well as high oxygen and
aroma barrier properties. However these properties are dependent on , in other words, with higher
humidity more water is absorbed. The water, which acts as a plasticiser, will then reduce its tensile
strength, but increase its elongation and tear strength. PVA is fully degradable and is a quick dissolver.
PVA has a melting point of **0°C and *****0°C for the fully hydrolysed and partially hydrolysed grades. It decomposes rapidly above **0°C as it can undergo at high temperatures.
PVA is an material but exhibits as the groups are small enough to fit into the lattice without disrupting it.
Applications:
1. Adhesive and thickener material in latex paints, paper coatings, hairsprays, shampoos and glues.
2. Textile agent
3. barrier in (PET) bottles.
4. for use as synthetic vessels in flow testing.
5. Movie and children's play or slime when combined with .
6. Feminine hygiene and adult incontinence products as a plastic backing sheet.
7. As a because materials such as do not stick to it.
8. As a water-soluble film useful for packaging.
9. As fiber reinforcement in concrete
*0. As a surfactant for the formation of polymer encapsulated nanobeads
*1. Used with polyvinyl acetate to make Elmer's glue
*2. Used in eye drops and hard solution as a lubricant.
*3. Used in protective chemical-resistant gloves
*4. Used as a for specimen collection, especially stool samples
*5. When doped with iodine, PVA can be used to polarize light.
*6. As an agent in medical procedures
Properties:Colorless, white or cream, amorphous po
1. PVA is mainly used in textile,fabric finishing agents
2.raw materials of vinylon fibers,construction,paint additive
PVA Product Characteristics and Instruction
1.Product Performance
Polymer is a kind of high polymer. It is white or light yellow floc, Granular or powdery in appearance.
Its molecular formula is[CH2CHOH]n,and the molecular formula for some of the PVA is -[CH2CHOH]n-[CH2CHOOCCH3]m-. PVA is non-toxic, insipid and harmless. PVA is water-soluble and the solvent provide good viscosity and film building. It can withstand oils, lubricants,
hydrocarbons and most other organic solvents. PVA has better chemical stability and insulatibility,
and provide ease in firm building; It possess the typical chemical properties of polyols and can carry
out process of esterification, etherealization, aceatalization etc.
2.Dissolving Temperature, thickness and time
PVA products dissolvent ability is determined by the degree of alcoholysis and polymerization.
When polymerization increased, the ability to dissolve will reduced. Likewise, when the degree of
alcoholysis decreased, the dissolvent temperature will reduced and water solubility will increase.
Fully alcoholysed PVA products are more sensitive to temperatures changes. Such products cannot
dissolve or experience partial swell in properties when temperature falls below required degree.
Blending will be difficult and foam created should the temperature exceed the required degree for
partial alcoholysis products. Temperature must be controlled at acceptable range for ease of dissolving.