Product Description
1. Preface
Inner Mongolia Shuangxin Environment-Friendly Material Co., Ltd. is
a national
high-tech enterprises, mainly engaged in producing chemical,
chemical fiber
products based on calcium carbide acetylene process , taking mature
technology,
advanced equipment, hi-technology, have Autonomous region level
technical center
and enterprise product research and development center, with all
kinds of excellent
product, has passed ISO management system certification.
Inner Mongolia Shuangxin Environment-Friendly Material Co., Ltd.
mainly
produces polyvinyl alcohol (PVA), vinyl acetate(VAC), acetaldehyde,
methyl
acetate, polyvinyl alcohol (PVA) fiber, cement etc. We will provide
excellent
products and the best service for customers with all our
hearts.
2. Standard:
Polyvinyl alcohol is a white or light yellow flake, granular,
powder.
Chart 1: The enterprise standard of the fully hydrolyzed PVA (non
fiber grade)
Product
Hydrolysis (mol%) Viscosity(mpa.s) NaAc(%) Volatile(%) Purity(%) Ash(%) PH(Value)
***9 *9.****0 *3.***0.0 ≤1.5 ≤5.0 ≥*4.0 ≤0.7 5~7
***9 *9.****0 *5.***5.0 ≤1.5 ≤5.0 ≥*4.0 ≤0.7 5~7
***9 *9.****0 *5.***4.9 ≤1.5 ≤5.0 ≥*4.0 ≤0.7 5~7
***9 *9.****0 *5.***3.0 ≤1.5 ≤5.0 ≥*4.0 ≤0.7 5~7
***9C *9.****0 ≥*3.0 ≤1.5 ≤5.0 ≥*4.0 ≤0.7 5~7
Chart 2: The enterprise standard of partial hydrolyzed PVA
New Specification Original Specification Item Hydrolysis(mol%) Viscosity(mpa.s)Volatile(%≤) Ash(%≤) PH(Value) Purity(%
≥)
*****0 ****8 *7.***9.0 *1.***8.0 5.0 0.4 5~7 *3.5
*****5 ****8 *7.***9.0 *2.***4.0 5.0 0.3 5~7 *3.5
*****0 ****8 *7.***9.0 *4.***9.9 5.0 0.3 5~7 *3.5
*****0 ****8 *7.***9.0 ≥*0.0 5.0 0.3 5~7 *3.5
3. Manufacturing method:
Calcium carbide to generate acetylene after reaction with water,
acetylene and aceti
acid to generate vinyl acetate , vinyl acetate to generate poly
vinyl acetate by singly
poly or copolymerization , polyvinyl acetate generate polyvinyl
alcohol after
alcoholysis reaction , then through specially crushing, squeezing,
drying, molding ,
we can get the biodegradable polyvinyl alcohol products of
Shuangxin
Physical and chemical properties:
Polyvinyl alcohol (PVA) has stable chemical properties, non-toxic
harmless and
non-pollution, non-explosive. Polyvinyl alcohol is soluble in
organic solvents
containing hydroxyl, such as glycerol, glyoxal, phenol, etc.
Polyvinyl alcohol
hydroxyl in similar to alcohols, reaction with sodium to release
hydrogen; reaction
with sodium hydroxide to generate molecular compounds, it can also
occur
esteriication, etherification and hydroformylation reaction.
Polyvinyl alcohol is soluble in water, it is a soluble high
molecular compound, its
disslution rate is a little different due to the different degree
of polymerization,
alcoholysis and the temperature. Heated to ******0 ℃ , its nature
almost unchanged,
the colour turns to yellow, the color comes darker if heating at
**0 ℃ for a long time,
while at **0 ℃ will occur intermolecular dehydration, drop
water-solubility and
above **0 ℃ intramolecular dehydration, lose weight; close to **0
℃, it will broken
down into water, acetic acid, acetaldehyde, crotonaldehyde.
Polyvinyl alcohol is
insoluble in Inorganic acid such as sulfuric acid, hydrochloric
acid solution.
Polyvinyl alcohol react with the dye type generated molecules
(e.g., Congo red)
adduct. Polyvinyl alcohol good
compactness, high crystallinity, strong stick relay, it
can be made into film, fiber,
foam products, it is widely used. Polyvinyl alcohol can
be completely degradation by microorganisms and water. PVA
dissolved in water to
be gel formation liquid seeping into the soil, can increase the
soil mass argillic,
permeability and water retention, especially suitable for sandy
soil reconstruction.
PVA material can be degrade into CO2 and H2O by soil bacteria in
soil after 6
months, the polymer is green environmental protection material.
Experiments prove
that polyvinyl alcohol (PVA) biological oxygen demand (BOD) much
smaller than
starch, the air products company in the United States biodegraded
the their PVA and
five days later, they measured BOD content, it is less than 1% of
the total initial
BOD.
4. Main Usage
1) As raw material to produce PVA fiber
2) As raw material to produce PVB, PVN, etc.
3) As raw material to produce polyvinyl alcohol panel
4) As raw material to produce PVA thin film;
5) Medicine、cosmetic and functional materials :due to its non-toxic
property,
PVA can be used in Pills, medicine grain of binder, bandages,
adhesive, eye
drops tackifier in medical field;in the field of cosmetics use
polyvinyl alcohol to
produce beauty mask, creme for emulsifying stabilizer;absorbed by
the body
sutures, obtained by irradiation is slightly crosslinked polyvinyl
alcohol
polyvinyl alcohol gel material, can be used as a biocompatible
materials and
medical human gut materials, contact lenses and carrier of
microorganism in
water treatment materials In medical clinical functional
materials;
6) Warp sizing in textile :polyvinyl alcohol can replace Starch,
corn flour, wheat
flour,to improve the fabric weaving performance, improve the
appearance of the
fabric and feel, Polyvinyl alcohol preparation is convenient,
stable viscosity, PH
value, not rotten, chemistry stability is good, good adhesion to
fiber, good
abrasion resistance, elastic.
7) Paper sizing agent : The main application of polyvinyl alcohol
in paper
processing is sizing agent in paper surface, adhesives of pigment,
pulping
additives, polyvinyl alcohol has better adhesion and film-forming
than casein or
starch. The paper with the polyvinyl alcohol sizing can be improved
in its print
adapatability, smoothness, abrasion resistance, folding strength,
oil resistance,
chemical resistance. The advantages of polyvinyl alcohol as paper
sizing agent
as bellow:
a) the adhesive of polyvinyl alcohol is about 3or 4 times more than
casein and
starch(b)the whiteness and the gloss of the coated paper is
better;(c)print gloss
better,bright color;(d) the paper is lighter;(e)coated paper no
curly;
(f)easy to use, hard to go bad;(g)better water-proof than casein or
starch if
added polyvinyl alcohol powder together with pulp in pulping ,
papermaking .The paper with high strength fit for special
purpose.
8) Adhesives:polyvinyl alcohol has strong adhesion to cellulose
materials( paper,
cloth, wood),due to its stable quality,difficult to go bad
properties, polyvinyl
alcohol can replace starch, animal glue arabic gum, dextrin to
produce all kinds
of adesives;fully hydrolyzed polyvinyl alcohol is better than
partial hydrolyzed
polyvinyl in damp proof,partial polyvinyl alcohol soluble in water
easily, which
has good bonding strength, be widely used in making adhesives
sticker,
rewetting adhesive and also in craft paper, stamp, label, etc.
Polyvinyl alcohol
can be paperboard laminate adhesives, corrugated board adhesives,
office glue;
polyvinyl alcohol can also be adhesives of pure iron grain, thermal
change
resister、Integrated circuit substrates、Integrated circuit packaging
and ceramic
capacitor molding;Poly (vinyl alcohol) modified urea-formaldehyde
resin can be
laminate board adhesive and artificial board adhesives;Polyvinyl
alcohol size
can be paint adhesives for constructions.
9) Paint and Coatings : polyvinyl alcohol condensation with
formaldehyde water
resistance Polyvinyl formaldehyde polymer compounds Under the
hydrochloric
acid catalysis,which used for interior and exterior construction
walls。Polyvinyl
alcohol paint and coatings has weather resistance, water proof, no
swell met
water, no embrittlement, non-toxic, insipidity, low cost, etc.
*0) Emulgator and dispersing agent:polyvinyl alcohol has good
surface activity,
which can be used in vinyl acetate, Styrene emulsion polymerization
emulsifier ,
improve the emulsion water resistance. It can be used as dispersion
agent to
polymerize gelatin, polyvinyl alcohol, HPMC, methyl cellulose in
Polyvinyl chloride
(PVC) suspension polymerization. Polyvinyl alcohol used as
dispersing agent is
classified by its alcoholysis and polymerization. In general, we
use alcoholysis
(****9%) as main dispersing agent, while alcoholysis (****0%) as
assist dispersing
agent.
*1) Others : polyvinyl alcohol can be made of polyvinyl alcohol
rubber material,
photographic material, temporary protective film, High frequency
quenching agent,
cathode-ray tube (CRT), Oil well cementing fluid loss additive,
Optical brightener,
moistre proof agent, cement motar, and soil conditioner.
5. Application Method:
Polyvinyl alcohol series can be dissolved in hot water bellow *5℃,
there is a little
difference in dissolving time and dissolving temperature due to its
different
polymerization, alcoholysis, alcoholysis ways. The dissolving
process of polyvinyl
alcohol includes swelling process and dissolving process. Put
polyvinyl alcohol into
*0℃ cold water slowly and keep stirring to make it fully swell in
order to let it
disperse , to make volatile materials overflow, dont dissolve
polyvinyl alcohol over
*0℃ water directly, in case of the polyvinyl alcohol surface form
film to pack the
undissolved ones, which caused the water cant enter into it to make
polyvinyl
alcohol cant fully dissolved. To rise the temperature until *5℃
slowly after its
fully swelled and keep it for two to two and a half hours until the
dissolving no
longer contains small particles and then filter the dissolving onto
*5 mesh size stain
steel net. Keep the stirring speed between *****0 rpm when
dissolving. We can
take jacket or water bath indirect ways to warm the dissolving and
also take water
vapor to warm it directly. Dont warm it on fire, in case of part
overheating
decomposition. If without stirring, we can take steam blowing
method in tangent
direction to dissolve it. The concentration of polyvinyl alcohol
series dissolving
water is about ****5%, while the low alcoholysis dissolving is
about *0%.To test
the polyvinyl alcohol if fully dissolved: take small quantity of
dissolving, add 1 to 2
drops iodine solution, if show blue granularity transparent, it
means the polyvinyl
alcohol isnt fully dissolved; if the blue color can be homogeneous
diffusion, it
means the polyvinyl alcohol already be fully dissolved. The
polyvinyl alcohol have
little bubble when dissolving, but if the concentrate is too high
or the stirring speed
is too fast, it will produce some bubble, we can add some
defoamer,
The dosage is 0.*1 to 0.*5% (based on PVA) of octanol, tributyl
phosphate, or 0.2 to
0.5% (based on PVA) of organic silicone emulsion.
6. Safety Caution
Polyvinyl alcohol is non-toxic, combustible polymer, the mixture of
the dust
formed by polyvinyl alcohol during machining or processing with air
is explosive,
The explosive force is amount to class 1.0 explosion hazard, the
explosion limit is
*5g/cm3, The static dust ignition is **0℃,while the dynamics of
dust ignition is
**0℃, Minimum ignition energy is **0mJ, maximum explosion pressure
is
0.*2MPa;The polyvinyl alcohol remains a little volatiles, such as
carbinol, methyl
acetate, etc., there are CO, formaldehyde, acetic acid steam
spreading in the air if the
temperature is too high. We must take dustproof measures during
machining of
polyvinyl alcohol, forbid to use open flame, use equipment conform
to the
requirements of the blast
7. Storage, Package and Transportation
Polyvinyl alcohol should be stored in close, ventilation, shady and
cool warehouse,
which fire proof, rain proof, wet proof, the temperature bellow
*5℃, no sunlight,
keep away from heating equipment, dont store it with other
chemicals in case of
adsorption to go bad, polyvinyl alcohol packed in polywoven bags or
craft bags, *0
or *5 kg net bag. The polyvinyl alcohol is transported by truck
with sail, rain proof,
wet proof, and sunlight resistance, be careful to break the package
when carrying it,
Due to pva combustible dust with explosion danger, transportation
vehicles and
wagons and loading and unloading places should be flameproof
explosion-proof
measures accordingly。Polyvinyl alcohol solution storage should pay
attention to rust
corrosion.
8. Inspection standard
GB*********0 Specified performance test regulations.
9 . Remarks
Different viscocity of polyvinyl alcohol can be produced according
to customers
requirement.
Country: |
China |
Model No: |
-
|
FOB Price: |
1350 ~ 1550 / Ton ( Negotiable ) (Negotiable)
Get Latest Price
|
Place of Origin: |
China |
Price for Minimum Order: |
1350 per Ton |
Minimum Order Quantity: |
16 Ton |
Packaging Detail: |
25kg/bag 800kg/bag |
Delivery Time: |
20days |
Supplying Ability: |
130000 Ton per Year |
Payment Type: |
T/T, L/C, D/A, D/P |
Product Group : |
PVA
|