Nylon 66 material and preparation method thereof

[0006] In order to solve the problems of the prior art, the embodiment of the present invention provides a new nylon 66 material to overcome the prob...

It should be noted here that, except that the components of the nylon 66 material in the embodiment of the application include the above-mentioned ingredients, other processing aids can also be added according to actual processing requirements, to improve the performance of the nylon 66 material, not here for other There are specific restrictions on processing aids, and users can choose according to actual needs.

Specifically, usually nucleating agent can be by changing the crystallization behavior of resin, accelerates crystallization rate, increases crystallization density and impels grain size micronization, reaches shortening molding cycle, improves product transparency, surface gloss, tensile strength, Rigidity, heat distortion temperature, impact resistance, creep resistance and other physical and mechanical properties. In the implementation of the present invention, the nucleating agent and aromatic polyamide are added to the glass fiber reinforced PA66 system according to a certain proportion to be used together as a flash inhibitor. Into the mold, contact with the mold wall to cool down the nucleation speed, so that the melt solidifies rapidly, and inhibits the melt from flowing out of the mold gap. On the other hand, the nucleating agent can have a synergistic effect with the aromatic polyamide, further reducing Generation of flash edges.

[0031] As described in the background, in the prior art, PA66 easily flows into the tiny gaps of the mold during injection molding, causing problems such as flash and flash. In order to solve this problem, the present invention proposes a new nylon 66 material, by adding the first flash inhibitor to the glass fiber reinforced PA66 system (referring to adding an appropriate amount of glass fiber to the polyamide to enhance the rigidity) and the second flash suppressor, wherein the first flash suppressor can use a nucleating agent, and the second flash suppressor can use an aromatic polyamide. The nucleating agent can increase the rate of nucleation when the glass fiber reinforced PA66 melt is injected into the mold and contacts the mold wall, so that the melt can be solidified rapidly, and the melt can be inhibited from flowing out of the mold gap, thereby reducing flashing. Aromatic polyamide has a rigid benzene ring in its molecule, and its crystallization temperature is relatively high. At the same time, it has good compatibility with PA66 and can entangle with PA66 molecular cha...