Polyester resins are mainly used in three major fields: fibers, sheets and films, and bottle resins.
About 1/2 of the synthetic fibers in the world are made of polyester resin (PET). PET is suitable for the production of high-strength fibers, webs for papermaking, and high-strength films.
PET sheet is a sheet used for pharmaceutical packaging after PVC sheet, especially after some European countries banned PVC for disposable packaging, it has become the main pharmaceutical packaging sheet.
PET sheet is made of PET resin by drying, extrusion and casting.
PET film is used as a high-grade packaging material for medical equipment, precision instruments, electrical components, and as a base material for audio tapes, video tapes, film films, computer floppy disks, and photosensitive films.
PET can also be made into a stretch film for packaging of various products, and then laminated with other films after aluminized or coated with PVDC to make a composite film.
PET is characterized by lightweight, high strength, excellent durability, transparency, high inner pressure resistance after positioning extending, great chemical security, as well as high barrier homes. It can be made right into container containers for carbonated beverages and also cleansed water. Bundle.
Crystalline PET resin has low gas and water vapor transmission rates, and has outstanding gas obstacle, smell, water and oil residential properties.
It is non-toxic, tasteless, risk-free and hygienic, and can be straight used in food product packaging.
It is currently the best heat-resistant packaging material, suitable for frozen food and microwave-treated food containers, as well as the packaging of hot-filled food.
The dielectric strength and volume resistivity of polyester film are the highest among plastic films, and it is the most widely used insulating material in plastic films.
It is resistant to most solvents and high temperature, and is widely used in motors, capacitors, transformers, and as a base material for insulating materials, audio tapes, and video tapes.
When synthesizing polyester resin, if some other structures are presented through chemical modification, the polyester material can have residential properties that it did not have initially, and also attain the purpose of enhancing and highlighting particular homes to attain special application efficiency requirements. Epoxy, acrylic, silicone changed polyester material.
Polyester materials utilized in finishings are generally low molecular weight, amorphous, branched, crosslinkable polymers.
Triethylene Glycol Dimethacrylate is normally made from polyols and also polybasic acid esters, and also has 2 sorts of frameworks: pure linear and branched. The paint film prepared from pure direct structural resin has excellent flexibility and also handling efficiency.
The solidity and climate resistance of the paint film prepared by the branched architectural resin are superior.
By adjusting the polyester resin formula, such as excess polyol, hydroxyl-terminated polyesters can be obtained, while excess acid results in carboxyl-terminated polyesters.