UCWAX 208A is a high - purity polyethylene wax. Its moderate molecular weight and relatively linear structure enable it to delay plasticization and control surface precipitation during the processing of PVC products. In PVC stabilizers, it serves to delay plasticization and improve the demolding performance. Meanwhile, it is suitable for the masterbatch industry and is conducive to the dispersion of color fillers and product precipitation. Its main characteristics are as follows:
• Improve the glossiness of the PVC surface • Delay plasticization of PVC products
• Improve the dispersion of filler pigments • Be suitable for masterbatches and plastics
Typical applications: Masterbatches and engineering plastics, applicable to PVC such as profiles, pipes, pipe fittings, foam boards, wood - plastic composites, pellets, etc. Supplementary on the adaptability of processing techniques
Performance during the mixing process
When being mixed with PVC and other additives, the moderate molecular weight and linear structure of UCWAX 208A help it to be quickly and evenly dispersed in the materials. Its linear structure makes it less likely to form agglomerates during the mixing process, enabling it to come into contact and mix with PVC particles and other additives (such as stabilizers, lubricants, etc.) more quickly. This not only helps to improve the mixing efficiency but also ensures that its functions such as delaying plasticization and improving demolding can be uniformly exerted during the subsequent processing.
Sensitivity to processing temperature
For the processing of PVC products, the processing temperature is a crucial factor. UCWAX 208A has a certain temperature stability. Within different PVC processing temperature ranges, it can maintain the relative stability of its structure, thus stably performing its functions. For example, when extruding PVC pipes at a high temperature, it will not decompose or lose its ability to delay plasticization due to excessive temperature; when injecting PVC pellets at a low temperature, it will not be unable to disperse effectively because of the low temperature and can still improve the dispersion of filler pigments and control the plasticization process.
II. Further advantages in different applications
Improvement of precision in profile processing
In terms of PVC profile processing, in addition to the previously mentioned functions of delaying plasticization and improving pigment dispersion, UCWAX 208A can also improve the dimensional stability of profiles to a certain extent. Since it can control the plasticization process of PVC, the internal structure of the profile is more uniform during the cooling and setting process, reducing the shrinkage and deformation caused by uneven plasticization. This is very important for some profiles with extremely high requirements for dimensional accuracy, such as profiles for building doors and windows.
Long - term performance of pipes and pipe fittings
For pipes and pipe fittings, UCWAX 208A helps to improve their long - term physical properties. During the use process, pipes and pipe fittings need to withstand the influence of environmental factors such as certain pressure and temperature changes. This polyethylene wax can improve the internal structure of PVC, making pipes and pipe fittings have better anti - aging performance, impact resistance and chemical corrosion resistance. For example, in PVC pipes for transporting hot water, it can improve the tolerance of the pipes to hot water and extend the service life of the pipes.
Density control of foam boards
In the production of PVC foam boards, in addition to coordinating the foaming process and improving the color uniformity, UCWAX 208A also has a positive effect on the density control of the foam boards. By precisely controlling the plasticization process and the synergy with the foaming agent, foam boards with different density requirements can be obtained. For some applications of foam boards that require light weight and high strength, such as packaging materials, the appropriate density can be achieved by adjusting the dosage of UCWAX 208A, while ensuring the mechanical properties of the foam boards.
Weather resistance of wood - plastic composites
In wood - plastic composites, UCWAX 208A helps to improve their weather resistance. Since wood - plastic materials are often exposed to outdoor environments, they need to withstand the influence of factors such as sunlight, rain, and humidity. UCWAX 208A can form a protective film on the surface of wood - plastic materials, preventing the intrusion of moisture and the damage of ultraviolet rays to the materials. At the same time, its functions of improving the interfacial bond and filler dispersion also help to improve the overall weather resistance of the materials, enabling wood - plastic products to maintain their appearance and mechanical properties for a long time.
Storage stability of pellets
In terms of PVC pellets, in addition to controlling the plasticization degree and color of the pellets, UCWAX 208A can also improve the storage stability of the pellets. During the storage process, pellets may have problems such as adhesion and deterioration due to environmental factors such as temperature and humidity. UCWAX 208A can form an isolation layer on the surface of the pellets, preventing the pellets from adhering to each other, and can also inhibit the chemical reactions inside the pellets, ensuring the quality stability of the pellets during storage and transportation.
III. In - depth elaboration in masterbatches and engineering plastics
Color stability in masterbatches
In the masterbatch industry, UCWAX 208A not only helps in the dispersion of color fillers but also makes important contributions to color stability. During the use of masterbatches, especially in the case of high - temperature processing or long - term exposure to the environment, the color may fade or change. UCWAX 208A can improve the color stability by stabilizing the dispersion state of pigments in the masterbatch and reducing the interactions between pigments. This enables plastic products produced with masterbatches containing UCWAX 208A to maintain bright colors for a long time.
Multifunctional additive in engineering plastics
In engineering plastics, UCWAX 208A can be used as a multifunctional additive. In addition to being an interfacial modifier to improve the interfacial bonding force, it can also play a role in the recycling and reuse of engineering plastics. When recycling engineering plastics, due to reasons such as material aging and impurity mixing, the processing performance often declines. UCWAX 208A can improve the processing fluidity of recycled engineering plastics, reduce the energy consumption during the recycling process, and at the same time improve the quality of recycled engineering plastic products, such as surface smoothness and mechanical properties.
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