In the injection molding industry, we often have to face such performance indicators. It is not only beautiful and flawless, but also a hard target. In the test report, we often see a lot of data, corresponding to each An experimental result can be compared by unifying the unit. Injection molding nylon plus glass fiber is a glass fiber modified material with good rigidity and is the leader in rigid materials. Then we sometimes encounter a problem. , how to do the material with high rigidity is weak in impact resistance.
Impact strength is referred to as impact strength, that is, impact strength. The size of the data indicates how tough the material is. However, rigidity and toughness are two relative data. The rigidity is increased and the toughness is inevitably reduced. However, there is a special case. When the injection of pure nylon adds glass fiber, the rigidity and impact strength will be improved. This is the improvement made on the basis of pure nylon.
So what do you want to do to further improve the impact strength? That is to say, the toughness needs to be improved. This requires adding a certain proportion of toughening agent. We often use grafted POE and EPDM (EPDM). For better toughness, just add more toughening agent. There is another way, that is, to further divide the glass fiber, because the fiber fiber is divided into many varieties in performance, there is a big difference in price, in order to Improve the impact strength. When molding nylon and glass fiber, you can choose the glass fiber with better performance. These glass fibers are supported by the steel bars one by one in the material. Overall performance, including impact strength.
If you want to improve further, you need to change it further from the microscopic. The length and distribution of glass fiber are the factors that determine the impact strength of injection molded nylon and glass fiber materials. This requires special attention from the screw processing of the extruder. Arrangement problems, the length of the glass fiber is longer, the more complex the glass fiber distribution, the impact strength will be improved.
This is a hypothesis made in the case of injection molding of nylon raw materials. If the raw material base is good and the impact strength itself is at a certain height, then the impact strength is further improved. It is only possible to produce pure raw materials in spite of various manufacturers. They all have their own characteristics, but the comprehensive performance is a low-end product. It is very difficult to further improve. This requires the support of imported materials. The imported materials are mainly used for research and development. For example, the material of a certain model is just right. Can do a certain product, can be qualified and mass produced without modification.