Eva material is
a very common material, which is a kind of common medium bottom material in
daily life. The finished products made with it have good softness, shock
resistance, skid resistance and strong pressure resistance, such as our common
Eva slippers, cotton shoes, Eva mobile phone protective cover, Eva iPad
protective cover, etc..
Polymerization
methods: High pressure bulk polymerization (for plastics), solution
polymerization (PVC processing AIDS), emulsion polymerization (adhesives),
suspension polymerization.Emulsion polymerization was used for ethylene acetate
(VA) content higher than 30%, and high-pressure bulk polymerization was used
for ethylene acetate content lower.
EVA sole means
the sole made of EVA material.High toughness, EVA sole resilience and
resistance to tension, has a good shockproof, buffer performance, heat
insulation, excellent insulation cold and low temperature resistance, resistant
to cold and exposure, airtight bubble hole, sound insulation effect is good,
airtight bubble pore structure, non-absorbent, moisture-proof, good water
resistance, resistance to sea water, oil, acid, alkali and other chemical
corrosion, antibacterial, non-toxic, tasteless, no pollution.
Application fields of EVA (ethylene - vinyl acetate
copolymer) :
one. EVA products with ethylene acetate content of 5%~10%
are elastic films, etc.
two. EVA with ethylene acetate content of 20~28%, mainly used
for hot-melt adhesives and coating products;
three.The content of
ethylene acetate is 5%~45%, the main products are film (including agricultural
film) and sheet, injection molding, molding products, foaming products,
hot-melt adhesives, etc.
1.EVA material properties
Water resistance: sealed bubble structure, non -
absorbent, moisture resistance, good water resistance.
A) Corrosion resistance: seawater, oil, acid, alkali and
other chemicals corrosion resistance, antibacterial, non-toxic, tasteless, no
pollution.
B) Machinability: no joint, and easy to hot-pressing,
cutting, gluing, fitting and other processing.
C) Shockproof: high resilience and tensile strength, high
toughness, and good shockproof/buffering performance.
D) Thermal insulation: excellent performance in heat
insulation, cold preservation and low temperature, and resistance to cold and
sunlight.
E) (5) Sound insulation: Closed bubble hole, sound
insulation effect is good.
2. Hazard characteristics
Powder and air can form an explosive mixture that, at a
certain concentration, will explode on Mars.Decomposition by heat produces
flammable gases.
3. Harmful combustion products: carbon monoxide and
carbon dioxide.
4. Fire-fighting methods: Fire fighters shall wear gas
masks and full-body fire-fighting suits to put out the fire upwind.Fire
extinguishing agent: fog water, foam, dry powder, carbon dioxide, sand.
5. Emergency treatment
Isolate the
leaking contaminated area and restrict access.Cut off the fire.It is
recommended that emergency responders wear dust masks (full masks) and gas
suits.Avoid dust, sweep it carefully, put it in a bag and transfer it to a safe
place.In case of large leakage, collect and recover or transport to waste
disposal site for disposal.
6. Operational precautions
Closed operation
provides good natural ventilation.Operators must be specially trained and
strictly abide by the operating rules.It is recommended that operators wear
self-priming filter dust respirator, chemical safety protective glasses,
anti-poison permeable overalls and rubber gloves.Keep away from fires and heat
sources. Smoking is strictly prohibited in the workplace.Use explosion-proof
ventilation systems and equipment.Avoid dust generation.Avoid contact with
oxidants and bases.Handle with care to prevent damage to packing and
container.Equipped with the appropriate variety and quantity of fire fighting
equipment and leakage emergency treatment equipment.
7. Store cautions
Store in a cool,
ventilated warehouse.Keep away from fire and heat.Should be stored separately
with oxidizer, alkali, avoid mixing storage, equipped with the corresponding
variety and quantity of fire equipment.
8. Main USES
It can also be used for packaging film, gasket, medical
equipment, hot-melt adhesive, cable insulation layer and so on.
📜
📜
📜