A kind of semi-aromatic polyamide composition and its preparation method and application
A semi-aromatic and aliphatic polyamide technology, used in mechanical equipment, combustion engines, internal combustion piston engines, etc., can solve the problems of poor laser penetration uniformity, welding instability, surface laser burns, etc., and achieve excellent Laser welding performance, high laser welding strength, high heat resistance effect
Active Publication Date: 2022-07-12
ZHUHAI WANTONG SPECIAL ENG PLASTICS CO LTD
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Problems solved by technology
[0006] The present invention provides a semi-aromatic polyamide composition to overcome the welding instability caused by poor laser transmission uniformity and the appearance defects caused by surface laser burns during laser welding.
Method used
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Embodiment 1～8
[0071] Table 1 Content of each component in Examples 1-10
[0072]
[0073] The content of each component in Table 2 Examples 11-18
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[0075]
[0076] Table 3 Content of each component in Comparative Examples 1 to 9
[0077]
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Abstract
The invention discloses a semi-aromatic polyamide resin composition and its preparation method and application. The composition includes the following components by weight: 20-70 parts of semi-aromatic polyamide resin; 1-15 parts of aliphatic polyamide resin; 0.1-3 parts of polyamide nucleating agent; ~5 parts; 0-60 parts of glass fiber; 0-3 parts of toner; the aliphatic polyamide is a semi-crystalline polyamide with a melting enthalpy value of not less than 15 J / g. The composition has more excellent laser transmission performance and more excellent laser weldability, and at the same time, its molded parts can obtain excellent laser transmission uniformity, which can help solve the existing problems in the production of laser welded products. The problem of welding instability, and the use of the composition can also significantly improve the problem of poor product appearance caused by the laser burn of the surface layer of the laser-transmitting layer during the welding process.
Description
technical field [0001] The present invention relates to the technical field of polymer materials, and more particularly, to a semi-aromatic polyamide composition and a preparation method and application thereof. Background technique [0002] Polyamide is one of the most widely used engineering plastics, and is widely used in electronic appliances, automobiles, home appliances, sporting goods and other fields. With the increasing structural complexity of vehicle components and some electronic and electrical components, it is difficult or even impossible to use direct injection molding to make them, so the components need to be laser welded. Compared with traditional plastic welding processes, such as hot plate welding, hot gas welding, induction welding, spin welding, ultrasonic welding, vibration friction welding, laser welding technology has many advantages: fast welding speed, good welding quality, clean, no vibration. Therefore, this welding process is widely used in pl...
Claims
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IPC IPC(8): C08L77/06C08K7/14C08K5/098C08K5/06C08K5/134C08K13/04
CPCC08L77/06C08L2201/08C08L2205/025C08K7/14C08K5/098C08K5/06C08K5/1345C08K13/04Y02T10/12
Inventor 叶少勇杨硕柴海博龙杰明麦杰鸿姜苏俊曹民
Owner ZHUHAI WANTONG SPECIAL ENG PLASTICS CO LTD