FOB Price
أحصل على آخر سعر( Negotiable )
|Minimum Order
Place of Origin:
Hebei China
Price for Minimum Order:
-
Minimum Order Quantity:
10 Ton
Packaging Detail:
-
Delivery Time:
15 days after confirmation of order
Supplying Ability:
-
Payment Type:
T/T, L/C
الشخص الذي يمكن الاتصال به carl-cn.admin.070911
XINCHENG BUILDING, YOUYI STREET, XINHUA DISTRICT, Shijiazhuang, Hebei
PVA ***9, lyvinyl alcohol (PVOH, PVA, or PVAL) is a water-soluble synthetic polymer (not to be confused with polyvinyl aceta
PVA ***9 product
Feature
Polyvinyl alcohol
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 **0C and ******0C for the
fully hydrolysed and partially hydrolysed grades, respectively. It
decomposes rapidly above **0C as it can undergo pyrolysis at high
temperatures.
PVA is an atactic material but exhibits crystallinity as the
hydroxyl groups are small enough to fit into the lattice without
disrupting it.
Application
Preparation of polyvinyl butyral is the largest use for polyvinyl
alcohol in the U. S. And western Europe. Its use as a
polymerization aid is the largest market in China. In Japan the
major use is vinylon fiber production.
Product Name: Polyvinyl Alcohol | ||
Index Name | Index | |
PVA ****9 | PVA ****8 | |
Hydrolysis ( mol %) | *9.9 | *8.7 |
Sodium Acetate(%) | 2.3 | 1.1 |
Volatiles (%) | 2.9 | 3.6 |
Viscosity (mpa.s) | *6.5 | *5.0 |
NaOH (%) | 0.*5 | 0.*0 |
Purity (wt %) | *4.8 | *5.3 |
Surface | White | White |
Remarks | QUALIFIED |