PET plastic raw material V9561 USA SABIC 9335

SABIC
Plastics Raw Materials
United States
SABIC
Plastics Raw Materials
United States
SABIC
Plastics Raw Materials< br/> United States
SABIC
Plastics Raw Materials
United States
SABIC
Plastics Raw Materials
United States
SABIC
Plastic raw materials
United States
br/> Plastic abbreviation
or
. The Chinese meaning is polyterephthalate plastic, which mainly includes polyethylene terephthalate
and polybutylene terephthalate
. Polyethylene terephthalate is also commonly known as polyester resin. Together with
they are collectively referred to as thermoplastic polyester, or saturated polyester.
br/> It is a milky white or light yellow highly crystalline polymer with a smooth and shiny surface. It has good creep resistance, fatigue resistance and friction resistance, low wear and high hardness, and has the largest toughness among thermoplastics. It has good electrical insulation properties and is little affected by temperature, but has poor corona resistance. Non-toxic, weather-resistant, chemical-resistant and highly hygroscopic, drying before molding is a must. Resistant to weak acids and organic solvents, but not resistant to hot water immersion or alkali.
br/>The glass transition temperature of the resin is high, the crystallization speed is slow, the molding cycle is long, the molding shrinkage is large, the dimensional stability is poor, the crystallized molding is brittle, and the heat resistance is low.
br/>
The heat distortion temperature and long-term use temperature are the highest among thermoplastic general engineering plastics
br/>
Because of high heat resistance, enhanced
in
/> immersed in a solder bath at ℃
, almost no deformation or discoloration, especially suitable for preparing soldered electronic and electrical parts
br/>
Bending strength
, elastic modulus The quantity is up to
, the creep and fatigue resistance are also very good, the surface hardness is high, and the mechanical properties are similar to thermosetting plastics
br/>
Due to the production
the ethylene glycol used in production is smaller than that of thermosetting plastics.
The price of butanediol used is almost half cheaper, so
Resin and reinforcement
are the lowest priced among engineering plastics and have a high cost performance.
br/> Resin bonding
One-component room temperature vulcanizate, after curing, it is an elastomer with excellent waterproof, shockproof adhesive, high and low temperature resistance, because Jili Technology is based on the molecular structure of the resin research, so it is specially used for bonding engineering plastics.
Glass fiber reinforcement
Suitable for electronic, electrical and automotive industries, used in various coil bobbins, transformers, televisions, recorder parts and casings, automotive lamp holders, lampshades, incandescent lamp holders, relays, Selenium rectifier etc.
br/>The current consumption ratio of engineering plastics in several application fields is electrical and electronics

, automobiles

, machinery

, Utensils

, consumer goods

, others

. At present
the total consumption of engineering plastics is not large, accounting for only

of the total.
In terms of film sheets, various types of food, medicine, non-toxic and sterile packaging materials, textiles, precision instruments, high-end packaging materials for electrical components, audio tapes, video tapes, movie films, computer floppy disks, metal coatings and photosensitive films, etc. The base material is electrical insulation materials, capacitor films, flexible printed circuit boards, membrane switches and other electronic and mechanical fields.
The application of packaging bottles has developed from the original carbonated drinks to the current beer bottles, edible oil bottles, condiment bottles, pharmaceutical bottles, cosmetic bottles, etc.
Electronic and electrical manufacturing connectors, coil bobbins, integrated circuit housings, capacitor housings, transformer housings, TV accessories, tuners, switches, timer housings, automatic fuses, motor brackets and relays, etc.
Auto parts such as switchboard covers, ignition coils, various valves, exhaust parts, distributor covers, measuring instrument covers, small motor covers, etc. can also be used
Excellent paintability, surface Glossy and rigid, used to manufacture automobile exterior parts.
Mechanical equipment is used to manufacture gears, cams, pump housings, pulleys, motor frames and watch parts. It can also be used as microwave oven baking sheets, various ceilings, outdoor billboards and models, etc.
Plastic molding processing can include injection molding, extrusion, blow molding, coating, bonding, machining, electroplating, vacuum metal plating, and printing.
Processing technology
Materials must be dried before processing. The drying temperature is
℃,
hours or more, usually
℃,
hours. . The air shot method can be used to check whether the material is completely dry. The proportion of recycled materials should generally not exceed

, and the recycled materials should be thoroughly dried.
br/> Selection of injection molding machine
Since the stabilization time after the melting point is short and the melting point is high, it is necessary to choose an injection system with more temperature control sections and less self-friction heat generation during plasticization. , and the actual weight of the product (water-containing material) cannot be less than the machine injection volume
/
. Based on these requirements, Ramada has developed a series of small and medium-sized special plasticizing systems in recent years. The clamping force should be greater than
/
.
br/> , mold and gate design
Bottle preforms are generally formed with hot runner molds. It is best to have a heat insulation board between the mold and the injection molding machine template, with a thickness of about
And the insulation board must be able to withstand high pressure. The exhaust must be sufficient to avoid local overheating or fragmentation, but the depth of the exhaust port should generally not exceed
, otherwise flash will easily occur.
br/> The melt temperature can be measured by the air shot method.
℃ varies, the enhanced level
can be set to
℃, etc.
br/>. Injection speed. Generally, the injection speed should be fast to prevent premature solidification during injection. But if it is too fast, the shear rate will be high and the material will be brittle. Injection is usually completed within
seconds.
br/> The lower the back pressure, the better to avoid wear. Generally no more than
. Normally not required.
br/>. Do not use too long a residence time to prevent the molecular weight from decreasing. Try to avoid temperatures above
°C. If the downtime is less than
minutes. If the dry shot treatment lasts for more than
minutes, clean it with viscosity
and lower the barrel temperature to
temperature until the machine is turned on again.
Other characteristics (
) General performance
The resin is milky white translucent or colorless transparent body, with relative density
and light transmittance

.
It is a medium barrier material, and its transmission coefficient to
is
~

/(


)
/> , the transmission coefficient of
is

/(


)
.
has a water absorption rate of
and is more absorbent.
(
) Mechanical properties
The tensile strength of the film is very high, comparable to that of aluminum foil, which is
times that of the film and is
and
membrane
times. Reinforced
has small creep, excellent fatigue resistance (better than reinforced
and
), and good wear resistance and friction resistance.
The mechanical properties are less affected by temperature.
(
) Thermal properties
Pure
The heat resistance of plastics is not high, but it is greatly improved after strengthening treatment. The mechanical properties at
℃
/>Laminate is good and is the better heat-resistant variety among reinforced thermoplastic engineering plastics.
has good heat aging resistance, its embrittlement temperature is
℃, and it still has certain toughness at
℃.
Not easy to burn, the flame is yellow and dripping.
(
) Electrical properties
Although it is a polar polymer, it has excellent electrical insulation and can still be maintained well at high frequencies.
Its corona resistance is poor and it cannot be used for high-voltage insulation. Electrical insulation is affected by temperature and humidity, and humidity has the greater impact.
(
) Environmental performance
Contains ester bonds and is not resistant to the effects of water, acid, and alkali under high temperature and water vapor conditions.
It is stable to organic solvents such as acetone, benzene, toluene, trichloroethane, carbon tetrachloride and oils, and has high resistance to some oxidants such as hydrogen peroxide, sodium hypochlorite and potassium dichromate.
Excellent weather resistance and can be used outdoors for a long time.