Large-scale analytical instruments identify lubricants for engineering plastics

2022-03-04   Pageview:698

Lubricants in plastic formulations play an important role in molding, mainly to accelerate melting, reduce melt viscosity, improve fluidity, and prevent molten polymer from adhering to the surface of thermal processing equipment. Because of the important role of lubricants, the analysis of lubricants is crucial in the field of composition analysis.

1. PE wax: PE wax has a wide range of applications, concentrated molecular weight distribution, good thermal stability, and can play a better screw lubrication effect and coating surface gain effect. In plastic production, it has excellent lubricating and demoulding effect.

2. PTFE wax: PTFE wax, the molecular weight is generally one percent of the commonly used PTFE resin. Generally used to improve the friction of products, in the case of good dispersion, excellent wear resistance and scratch resistance can be obtained.

3. PETs: PETs are pentaerythritol stearate, which is a white, hard, low-melting, high-temperature-resistant wax. Commonly used as a high temperature lubricant in the plastics sector, with lower addition levels than most conventional lubricants.

During the use of engineering plastics, various phenomena such as cracks, wear, and discoloration will occur, which are all caused by the aging of engineering plastics. And how to provide the life of engineering plastics, by improving its extension and flexibility, can delay its aging.

Engineering plastic lubricants: New engineering plastics often bring processing difficulties. Some plastics are durable copolymers at low temperatures that are very viscous shortly after processing, and some have very high molecular weights and therefore very poor flow. Internal and external lubricants can provide good internal and external lubrication effects, improve fluidity and surface quality during injection molding, reduce mold release pressure, and promote nucleation. Widely used in PC, PA, PC/ABS, PET, PS, POM, PP, etc. Engineering grease with high compatibility and excellent thermal stability.

Compatible lubricants When selecting lubricants, be sure to consider their compatibility.

Compatible with different kinds of engineering plastics, in order to ensure the smooth development of the product in the future. Montan wax is a natural wax, in these plastics applications, montan wax due to low volatility, as well as both internal and external lubrication in polar and non-polar plastics, additional mold release and anti-migration properties and as extremely valuable processing aids. The application of montan wax in newly developed plastics has the value of market development.

With the development of the wax market, new synthetic waxes have also been introduced to the market. Compared with montan wax, its internal and external lubricating performance is very efficient, at the same time, it has sufficient resources and stable price, which ensures environmental protection without affecting production. It is also compatible with thermoplastic resins, thermosetting resins, etc., and will never affect production.

The emergence of new synthetic waxes provides developers with a new option.

Through these performance improvements, the life of engineering plastics has been extended and product quality has been improved.


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