Halogen-free flame-retardant polyamide composite material as well as preparation method and application thereof
A flame retardant polyamide and composite material technology, applied in the field of engineering plastics, can solve the problems of insufficient cooling time, trapped air, air bubbles, etc. Effect
Pending Publication Date: 2022-04-22
SHANGHAI KINGFA SCI & TECH +1
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Problems solved by technology
However, MCA is sensitive to shear and temperature, and is extremely prone to degradation during extrusion and injection molding. When the size of the injection molded product is large or there are more shear structures, this degradation will be more obvious, which will lead to More volatile organic compounds remain in MCA flame-retardant polyamide, and more volatile organic compounds will cause a series of problems such as bright spots, trapped air, and bubbles on the appearance of the product during continuous injection molding production
Moreover, when the MCA flame-retardant polyamide composite material is applied in the terminal connector industry, customers attach great importance to the molding cycle of the product. If the cooling time is insufficient or the cycle is short, the product will not be able to be demoulded or the product will be pushed up. Wearing and other production abnormalities
Method used
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[0016] The technical solutions of the present invention will be further described below in conjunction with the embodiments. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative efforts belong to the protection scope of the present invention. The raw materials used in the examples and the comparative examples can all be purchased commercially, and the same kind is used in the parallel experiments.
[0017] Sources of raw materials are as follows, but not limited to these raw materials:
[0018] Polyamide resin:
[0019] PA66: model: EP-158, manufacturer: Zhejiang Huafon Group, melting point 265°C;
[0020] PA6: Model: HY-2500A, manufacturer: Jiangsu Haiyang Chemical Fiber Co., Ltd., melting point 225°C;
[0021] PA56: model: Ecopent 1273, manufacturer: Cathay Biomaterials Co., Ltd., ...
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Abstract
The invention discloses a halogen-free flame-retardant polyamide composite material as well as a preparation method and application thereof. The halogen-free flame-retardant polyamide composite material comprises the following components in parts by weight: 80-95 parts of polyamide resin, 5-20 parts of a flame retardant, 0.1-2 parts of hyperbranched resin and 0.1-2 parts of a crystallization accelerant. The halogen-free flame-retardant polyamide composite material provided by the invention has the advantages of less injection mold scale, small product demolding force and short molding period.
Description
technical field [0001] The invention belongs to the technical field of engineering plastics, and in particular relates to a halogen-free flame-retardant polyamide composite material and a preparation method and application thereof. Background technique [0002] Melamine cyanurate (MCA) flame-retardant polyamide has the advantages of good flame retardancy, high cost performance, and high electrical performance. It is widely used in the electrical and electronic industry, such as terminal connectors, motor frames, etc. However, MCA is sensitive to shear and temperature, and is extremely prone to degradation during extrusion and injection molding. When the size of the injection molded product is large or there are more shear structures, this degradation will be more obvious, which will lead to More volatile organic compounds remain in MCA flame-retardant polyamide, and more volatile organic compounds will cause a series of problems such as bright spots, trapped air, and bubbles...
Claims
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IPC IPC(8): C08L77/06C08L77/02C08L67/00C08L77/00C08K5/3492
CPCC08L77/06C08L77/02C08L2201/02C08L2201/22C08L67/00C08L77/00C08K5/34924
Inventor 吴长波易新黄牧陈飒飒胡泽宇金雪峰王丰丁超
Owner SHANGHAI KINGFA SCI & TECH