UCWAX 206A 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 • Applied in masterbatches and engineering plastics
Typical applications: Masterbatches and engineering plastics, applicable to PVC such as profiles, pipes, pipe fittings, foam boards, wood - plastic composites, and pellets, etc.
In terms of physical and chemical properties:
In - depth influence of molecular weight and structure on performance
The moderate molecular weight and linear structure not only enable it to play a role in the processing of PVC products. From a molecular perspective, the linear structure reduces the entanglement of molecular chains, which helps to be more orderly distributed in the system. This allows it to occupy a specific spatial position when interacting with PVC molecules, thereby effectively delaying the plasticization process.
When mixed with other additives, this structural characteristic also helps to maintain its own stability and will not affect its functions due to excessive distortion or aggregation of molecular chains. For example, it can stably play the roles of delaying plasticization and improving demolding performance in PVC stabilizers.
Influence of purity on its performance
As a high - purity polyethylene wax, its high purity means extremely low impurity content. This is very important in the processing of PVC products because impurities may interfere with the plasticization process of PVC or cause adverse reactions with other additives. For example, low - purity wax may contain some metal - ion impurities, and these impurities may catalyze the degradation reaction of PVC during the PVC processing process. However, the high - purity characteristic of UCWAX 206A avoids this risk and ensures the quality and performance stability of PVC products.
II. Specific roles in different PVC products
In terms of profiles
During the processing of PVC profiles, the delay plasticization effect of UCWAX 206A helps to precisely control the forming process of profiles. Since profiles usually require specific shape and dimensional accuracy, delaying plasticization can make PVC materials better maintain their shape in the mold and reduce the possibility of deformation. At the same time, the characteristic of improving the dispersion of filler pigments makes the surface color of profiles more uniform and improves the appearance quality of profiles.
In terms of pipes and pipe fittings
For pipes and pipe fittings, its good delay plasticization performance ensures the stability of pipes during the extrusion process. When pipes are extruded, a uniform plasticization speed is one of the key factors to ensure the uniform wall thickness of pipes. UCWAX 206A can also improve the glossiness of the PVC surface, which is very important for some pipes with appearance requirements (such as PVC pipes for indoor decoration), making the pipe surface smooth and shiny and improving the product's market competitiveness.
In terms of foam boards
In the production of PVC foam boards, UCWAX 206A helps to control the foaming process. Delaying plasticization can be coordinated with the action of the foaming agent to ensure that foaming is carried out at the appropriate time and conditions, obtaining a uniform cell structure. Its characteristic of improving the dispersion of filler pigments also makes the color of the foam board more uniform, improving the product's aesthetics and quality.
In terms of wood - plastic composites
In wood - plastic composites, UCWAX 206A can enhance the interfacial bond between PVC and wood flour. Since it can improve the dispersion of filler pigments, it has a positive effect on the uniform dispersion of wood flour, a natural filler, in the PVC matrix, improving the mechanical properties of wood - plastic composites, such as tensile strength and flexural strength. Meanwhile, its delay plasticization and improvement of demolding performance also contribute to the processing and forming of wood - plastic products.
In terms of pellets
In the production of PVC pellets, UCWAX 206A helps to control the plasticization degree and hardness of pellets. By delaying plasticization, the softness and hardness of pellets can be adjusted according to requirements to meet different application scenarios. Moreover, it can improve the dispersion of pigments in pellets, making pellets present more vivid and uniform colors.
III. Unique advantages in the masterbatch industry
Interaction with pigments
In the masterbatch industry, UCWAX 206A has a special interaction with color fillers. It can wrap around the surface of pigment particles, reducing the agglomeration force between pigment particles, thereby achieving better dispersion effects. This wrapping effect is due to the chemical affinity between certain active groups in its molecular structure and the pigment surface, enabling pigments to be evenly dispersed in the masterbatch matrix.
Influence on the processing performance of masterbatches
Its presence in masterbatches helps to improve the processing fluidity. During the extrusion or injection molding process of masterbatches, good fluidity is one of the key factors to ensure product quality and production efficiency. UCWAX 206A can reduce the viscosity of the system, making masterbatches easier to flow in processing equipment, reducing equipment wear, and also contributing to the uniform mixing of masterbatches with other plastic materials, improving the quality stability of the final plastic products.
IV. Potential application expansion in engineering plastics
Enhancing the interfacial bond between phases
In engineering plastics, UCWAX 206A may have the potential to be an interfacial modifier. It can improve the bond between different phases in engineering plastics. For example, in fiber - reinforced engineering plastics, it can increase the interfacial bond strength between fibers and matrix resins. This is because it can form a uniform coating on the fiber surface, similar to the dispersion effect on fillers in PVC, thereby improving the overall mechanical properties of engineering plastics.
Improving processing performance and surface properties
Similar to its roles in PVC and masterbatches, UCWAX 206A may also help to improve processing performance in engineering plastics processing, such as reducing melt viscosity and increasing fluidity. Meanwhile, it may also improve the surface properties of engineering plastics, such as increasing surface glossiness and reducing surface roughness, which are very important for some engineering plastic products with requirements for appearance and friction properties.
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