What is PET?

PET plastic is the abbreviation of Polyethylene terephthalate in English, referred to as PET or PETP.

PET plastic itself is not toxic, but long-term use may produce toxins. After 10 months of use, pet plastic products may release harmful substances DEHP and are not resistant to high temperatures. PET materials have high transparency and strong stability, and are widely used in various chemical alcohol bottles and infusion bottles.

Polyethylene terephthalate (PET), with the chemical formula (C10H8O4)n, is synthesized by transesterification of dimethyl terephthalate and ethylene glycol or by esterification of terephthalic acid and ethylene glycol. Bishydroxyethyl phthalate, and then polycondensation reaction in the system. It is a crystalline saturated polyester, a milky white or light yellow, highly crystalline polymer with a smooth and shiny surface. It is a common resin in daily life and can be divided into APET, RPET and PETG.

It has excellent physical and mechanical properties in a wide temperature range. The long-term use temperature can reach 120 ° C. It has excellent electrical insulation. Even at high temperature and high frequency, its electrical properties are still good, but its corona resistance is poor. Creep resistance, fatigue resistance, friction resistance and dimensional stability are all very good.

PET has its own special performance, but also has its own performance deficiency, so the special nucleating agent will help PET improve its performance and expand its market potential.

The color of PET nucleating agent is white powder. It looks very nice.

Nucleation principle and process conditions of PET transparent masterbatch

Transparent masterbatch is the most widely used type of polyester film, and its main uses are:

• (1) As a packaging material;

• (2) Used as a functional coating;

• (3) Used as a functional film;

• (4) Used in the production of composite films, sheets, etc. PET resin has the characteristics of high gloss, low haze and high transparency, so it has become the raw material of choice for making high-grade packaging materials and decorative coatings.

Adding an appropriate amount of photoinitiator and additives to PET can make a variety of color masterbatches. However, with the strengthening of people's awareness of environmental protection and the increasing requirements for food hygiene, strict restrictions on additives in plastic products are required, and PVC plastics with photosensitizers and UV absorbers are prohibited from being produced and sold. Therefore, in recent years, people have researched and developed environmentally friendly products such as halogen-free flame retardant masterbatches and antistatic masterbatches to replace traditional halogen-containing flame retardants and antistatic agents.

Adding a special nucleating agent to PET can help PET plastic extend its properties.

Adding about 5/1000 PET special nucleating agent can make PET achieve the similar properties of PBT.

It can also be made into PET alloy, plus toughened rubber EPDM, etc., all of which can achieve the effect of improving impact resistance.

Nucleating agent for PET product features:

The nucleating agent promotes the crystallization of the resin by providing crystal nuclei, making the structure of the crystal grains finer, thereby improving the rigidity, heat distortion temperature, dimensional stability, transparency and surface gloss of the product. In addition, the nucleating agent can shorten the molding cycle of the product, expand the processing conditions, and enhance the smoothness of the product surface.

Application of nucleating agent for PET products:

Adding 0.2-0.4% of this product to the PET material can achieve the desired anti-reflection effect. The addition of the nucleating agent for PET can improve the mechanical properties of the material. It is suitable for making transparent plastic products, and is also widely used on transparent polypropylene sheets and transparent polypropylene tubes.

Nucleating agent for PET packaging storage:

The inner packing is composite bag, 5kg or 10kg each; the outer packing is carton, which should be stored in a cool and dry place. It can be stored for three years under unopened conditions. If the product is not used up, the bag should be tightly closed. If other specification packaging is required, it can be negotiated separately

Because PET has a wide market space, its nucleating agent has an irreplaceable role. Therefore, if you are looking for high-quality PET special nucleating agent, you can contact us.