How to improve the bonding strength between Functionally modified masterbatch and matrix material? (Communities - Activities)
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How to improve the bonding strength between Functionally modified masterbatch and matrix material? | |
1. Optimize the surface treatment of masterbatch Surface treatment of functionally modified masterbatch is an important means to improve the binding force. First, the surface of the masterbatch can be modified by a coupling agent. The coupling agent molecule has two different functional groups, one end of which can react chemically with the active group on the surface of the masterbatch, and the other end can interact with the molecular chain of the matrix material. For example, for filled functionally modified masterbatch, the use of silane coupling agent can build a "bridge" between the masterbatch and the matrix material, effectively enhancing the bonding between the two. In addition, the surface of the masterbatch can be activated by physical methods such as plasma treatment to increase the surface roughness and active sites, thereby improving the bonding force with the matrix material. 2. Adjust the compatibility of the masterbatch and the matrix material Improving the compatibility of the masterbatch and the matrix material is the key to enhancing the bonding force. When selecting the raw materials of the masterbatch, the degree of matching between the chemical structure and polarity of the masterbatch and the matrix material should be considered. If the compatibility between the two is poor, a compatibilizer can be added to improve it. Compatibilizers can reduce the interfacial tension between the masterbatch and the matrix material, making them easier to fuse with each other. For example, adding a compatibilizer containing maleic anhydride grafting to a polyolefin matrix material can significantly improve the compatibility with the Functionally modified masterbatch, allowing the masterbatch to be more evenly dispersed in the matrix material, thereby enhancing the binding force. At the same time, adjusting the formula of the masterbatch so that it has similar solubility parameters to the matrix material can also help improve the compatibility of the two. 3. Control processing parameters Processing parameters have an important influence on the binding force between the masterbatch and the matrix material. During the mixing process, appropriate temperature, speed and time are key. Higher mixing temperatures can make the molecular chains of the matrix material and the masterbatch more active, increasing the mutual diffusion and entanglement between them. However, too high a temperature may cause the material to decompose, so the optimal temperature needs to be determined based on the characteristics of the material. Properly increasing the mixing speed can promote the dispersion of the masterbatch in the matrix material, but it is also necessary to avoid excessive shear force that causes the masterbatch to break. The mixing time also needs to be controlled. Too long or too short is not conducive to improving the binding force. In addition, in the molding process such as injection molding and extrusion, reasonable molding pressure and speed also help to enhance the combination of masterbatch and matrix material, so that they can be better integrated during the molding process. 4. Use special composite technology Using special composite technology can effectively improve the bonding strength. For example, multi-layer co-extrusion technology can compound Functionally modified masterbatch and matrix material in the form of a multi-layer structure. By precisely controlling the thickness and composition of each layer, a gradient interface is formed between the masterbatch and the matrix material, reducing the stress concentration caused by sudden changes in the interface, thereby improving the bonding strength. In addition, reactive blending technology is also an effective method. During the mixing process, a chemical reaction occurs between the masterbatch and the matrix material to form a chemical bond. The existence of this chemical bond can greatly enhance the bonding strength between them and ensure that the Functionally modified masterbatch plays a stable function in the matrix material. | |
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| Target State: All States Target City : All Cities Last Update : 06 November 2024 3:18 PM Number of Views: 15 | Item Owner : fang Contact Email: Contact Phone: (None) |
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2024-11-23 (0.386 sec)