Light or colorless polyamide composite material for laser welding

A technology of laser welding and composite materials, which is applied in the field of modified polymer composite materials and composite materials, can solve the problems of unobtainable and difficult to approach the strength of the body, and achieve the effect of high strength retention rate

Inactive Publication Date: 2017-08-22
JIANGSU KINGFA SCI & TECH ADVANCED MATERIALS CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, how to improve the strength of laser welding to make it close to the strength of the body is quite difficult and no relevant inspiration can be obtained through the current existing technology

Method used

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  • Light or colorless polyamide composite material for laser welding

Examples

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Comparison scheme
Effect test

specific Embodiment 1

[0027] Laser absorption part: 85 parts of PA66, 5 parts of copper hydroxide phosphate, 0.05 part of cuprous iodide, 1 part of sodium bromide, 10 parts of PA66-LG50;

[0028] Transmission laser part: 85 parts of PA66, 0.05 parts of cuprous iodide, 1 part of sodium bromide, 10 parts of PA66-LG50.

specific Embodiment 2

[0030] Laser absorption part: 60 parts of PA66, 2 parts of copper phosphate, 0.5 parts of copper bromide, 2 parts of potassium iodide, 10 parts of glass fiber, 20 parts of PA66-LG50;

[0031] Transmission laser part: 60 parts of PA66, 0.5 parts of copper bromide, 2 parts of potassium iodide, 10 parts of glass fiber, 20 parts of PA66-LG50.

specific Embodiment 3

[0033] Laser absorption part: 50 parts of PA66, 1 part of sodium phosphate, 2 parts of cuprous iodide, 5 parts of sodium bromide, 20 parts of glass fiber, 20 parts of PA66-LG50;

[0034] Transmission laser part: 50 parts of PA66, 2 parts of cuprous iodide, 5 parts of sodium bromide, 20 parts of glass fiber, 20 parts of PA66-LG50.

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Abstract

The invention discloses a light or colorless polyamide composite material for laser welding. The light or colorless polyamide composite material for laser welding comprises a laser absorption part and a laser transmission part, wherein the laser absorption part comprises polyamide, a phosphate compound, a copper halide metal compound, a halogenated metal salt compound and glass fibers; the laser transmission part comprises polyamide, the copper halide metal compound, the halogenated metal salt compound and the glass fibers; halide ions in the copper halide metal compound are chloride ions, bromide ions or iodide ions; copper ions in the copper halide metal compound are Cu<+> or Cu<2+>; metal elements in the halogenated metal salt compound are alkali or alkaline-earth metal elements; the diameters of the glass fibers are 5-20mu m; and the number average lengths of the glass fibers are 0.05-30mm; and compared with a body material without a welded conjunction surface, the composite material disclosed by the invention is relatively high in strength retention rate or even exceeds that of the body material, the property retention rate of the composite material is even up to 95% or above, and the properties of the composite material are remarkably prior to those of welding materials of common short cut glass fibers.

Description

technical field [0001] The invention relates to a composite material for laser welding, in particular to a light-colored or colorless polyamide composite material for laser welding, and belongs to the technical field of modified polymer composite materials. Background technique [0002] The concept of laser welding began in the 1970s. It usually uses a diode laser with a wavelength between 700-1200nm or a neodymium-doped yttrium aluminum garnet (Nd:YAG) laser to generate a large amount of heat at the welding site, thereby making the component The contact area melts to form a weld. [0003] Compared with the traditional plastic welding process, laser welding can be applied to various flexible structures. Its welding strength is high, and its rapid heating and cooling rate can reduce the thermal influence on the material, and no external force will be exerted on the weldment. Therefore, the stress and deformation of the weldment are very small; in addition, the welding proces...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L77/06C08L77/02C08K13/04C08K7/14C08K3/32C08K3/16
CPCC08L77/06C08K2003/328C08K2201/003C08K2201/004C08K2201/014C08L77/02C08L2205/025C08K13/04C08K7/14C08K3/32C08K3/16
Inventor 林洁龙杨波丁正亚张超陈延安孙刚夏建盟袁绍彦李雅雅
Owner JIANGSU KINGFA SCI & TECH ADVANCED MATERIALS CO LTD
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