In the injection molded nylon products industry, we often meet customer requirements in this way, especially the mechanical properties, take out the quality inspection report, and check all the data one by one. Some of them and even one of them are substandard. However, even if the mechanical properties are better, no good appearance is futile, unless it is necessary to carry out subsequent processing such as painting. Everyone has been doing for a long time in the injection molding industry. For example, the appearance of ordinary glass fiber-reinforced materials is not very good, toughened appearance due to the existence of toughening agents will look better, but glass fiber PA66 reinforced nylon products will certainly not look beautiful?
What are the causes of the poor appearance of glass fiber-reinforced materials? The problem is mainly caused by glass fibers. The compatibility of glass fibers and nylon materials is not good. In the injection molding process, fountain phenomenon will occur and glass fibers will be exposed. Appearance, if there is not enough nylon resin for wrapping, the appearance defect is exposed. The glass fiber content directly affects the appearance effect. The more glass fiber, the greater the exposure probability. However, in this material, glass fiber is an indispensable component. In part, the performance of the mechanical performance depends on him.
To solve this problem, we can minimize the intake of glass fiber under the premise of meeting the standard of mechanical properties. Then we need to add a certain amount of compatibilizer to increase the compatibility of glass fiber and melt, and then we can further refine the glass fiber. For example, short glass fiber can be selected. Compared with long glass fiber, the intake of short glass fiber requires the cooperation of a side feeder, which can control the glass fiber volume more accurately. In addition, the short glass fiber is dispersed evenly in the material. Great contribution to the appearance of the effect.
In addition, the nylon resin used for glass fiber pa66 reinforced nylon is nylon 66. The flowability of nylon 66 is much better than that of nylon 6, and the resistance during injection molding is small, and the degree of wrap between melt and glass fiber is good.
In summary, the short glass fiber compatibilizer nylon 66 can be said to be a good combination, achieving a win-win result in mechanical properties and appearance. Glass fiber pa66 reinforced nylon is also increasingly used in the injection molding industry, especially In the automotive industry, the coal mining industry, electronic and electrical industries, and the oil field industry have all been applied. The solution to the appearance problem will also prompt the material to be further favored by users.