FOB Price
Obtenir le dernier prix2250 / Metric Ton ( Negotiable )
|Minimum Order
Localité:
South Africa
Prix de commande minimale:
Commande minimale:
550 Metric Ton
Packaging Detail:
25Kg/paperboard barrel
Delivery Time:
18 Days
Supplying Ability:
3500 Metric Ton per Month
Payment Type:
T/T, D/P, Western Union, Money Gram
South Africa
Personne àcontacter Mr. Hans
22 triomph street, Johannesburg, Gauteng
Polyvinyl alcohol(PVA) has excellent film forming, emulsifying,and adhesive properties.It is also resistant to oil, grease and solvent. 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 humidity, 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, respectively. It decomposes rapidly but exhibits crystallinity as the hydroxyl groups are small enough to fit into the lattice without disrupting it.
