Polymer Fibers (Part 3 (Final): Methods of Producing Polymer Fibers)
In the first part of the series, we got acquainted with ordinary polymer fibers; then, in the second part, we examined high-performance polymer fibers. In the third and final part, we introduce the methods of producing polymer fibers. Properties required for fiber-forming polymers Despite the wide range of natural and synthetic polymers, only a few can be used as […]
The Effects of Reactive Impact Modifier on Impact Resistance of Polycarbonate
As an engineering polymer, polycarbonate (PC) is the hardest transparent material used in a wide range of polymer industries. This polymer can be used in various processes equipment such as injection molding and extrusion. In addition to transparency and according to polarity of PC, it also shows good paintability properties. The most important properties of […]
An Analysis on The Effect Of LLDPE-G-MA as a Compatibilizer In Halogen-Free Flame Retardants (HFFR) Compounds
One of the most important features of high-consumption polymers such as polyethylene (PE) and polypropylene (PP) is their ability to adjust different properties with different additives in the formulation. So, most of the properties of polymers can be changed by adding different fillers. In general, fillers increase stiffness, abrasion resistance, and decrease the shrinkage parameter […]
A Comparative Analysis of the Effect of Coupling Agent with Different Grafting Level on Mechanical Properties of HFFR Compounds
Polymers containing the flame-retardant substance are compounds used as an alternative to PVC based compounds in cables and other flame retardancy polymer compounds [1]. The most important feature of these compounds is that they emit less toxic smoke and gas, in addition to the property of flame retardancy [2]. the additives used in such cables […]
An Analysis on the Effects of Different Coupling Agents on Polymer Compounds Containing Flame Retardant
As explained in previous articles, compounds containing flame retardant additives are used due to various reasons such as less smoke production, no corrosive gases, excellent dielectric properties and also the possibility of recycling in various applications such as power cables and etc. [1]. One of the main disadvantages of this group of materials is their […]
Polymer ageing
Nowadays a combination of different physical, mechanical, and thermal properties is needed in many engineering applications, but it is not possible to use only one type of material that creates all desirable properties. For example, in the automotive industry such as dashboard production, we need a compound having proper stretch stability and anti-strength, hit resistance, […]
Polycarbonate Properties and Applications
Polycarbonates (PC) are condensation polymers having desirable properties such as high clarity, thermal stability, high heat distortion temperature, and in spite of their hardness, they are flexible instead of being brittle against impact. Having such properties placed them in engineering polymer groups. Polycarbonates are easily formed and different grades of them are obtained by processes […]
Polyacetal Thermoplastic and its Compounds; Properties and Applications
Today, more than 70% of global POM production capacity is centered in Asia. The production market has been growing approximately 4.5% annually and a total of 1350 kiloton in 2018. The main buyers are the automotive and electronics industries. Polyoxymethylene was discovered by Hermann Staudinger, a German chemist, in 1920. But due to stability and […]
Multilayer Films for Food Packaging (The Manifestation of Interlayer Adhesives)
In the article of properties of different types of polymers at polymer films (part one) has mentioned to importance of polymer films at packing industrial and applications of them in this industry. One of the most important categories of polymer films is multilayer films. Significant purposes of combination of polymers in multilayer films is to preserve the […]
Effect of Interlayer Adhesive on Three-Layer Coatings
Nowadays, polymeric interlayer adhesives such as polyethylene grafted by maleic anhydride, are used widely for linking polyolefins to polar polymers (e.g., polyamide, epoxy, polyvinyl alcohol and etc.), or metals. These types of adhesives are used as a middle-layer in oil and gas, multi-layer films, multi-layer pipes, pipes junctions, fuel tanks and etc. In this article […]