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Color-selectable nylon composite material for laser welding and preparation method thereof

A nylon composite material, laser welding technology, applied in the field of color selectable, nylon composite material for laser welding and its preparation, to achieve the effect of increasing the application field, high absorption efficiency, and changing limitations

Pending Publication Date: 2020-05-12
ZHEJIANG PRET NEW MATERIALS +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] As engineering plastics, PA materials are widely used in automobiles, home appliances and other fields. Nylon materials involve more and more laser welding processes. Because of the light absorption of toner (mainly carbon black), the light-transmitting layer of laser welding materials on the market is currently Natural color materials are usually used, and the light-absorbing layer is usually a black material, which limits the use of other colors for the laser welding forming process. Solving the limitation of color on laser welding can make laser welding more widely used in plastics

Method used

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  • Color-selectable nylon composite material for laser welding and preparation method thereof
  • Color-selectable nylon composite material for laser welding and preparation method thereof
  • Color-selectable nylon composite material for laser welding and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] Translucent components:

[0050] Weigh PA6 5.87kg, bake at 100°C for 4 hours, PA6I 1.0kg, light-transmitting black powder 50g, lubricant 50g, antioxidant 30g, mix well in a high-speed mixer to obtain a resin mixture, set aside;

[0051] Weigh 3.0 kg of glass fiber and set aside.

[0052] Above-mentioned resin mixture is joined in the twin-screw extruder (screw diameter is 35mm, length-to-diameter ratio is L / D=40) through main feeding port, glass fiber is added into twin-screw extruder through side feeding port, double The control temperature of each section of the screw extruder (from the feeding port to the nozzle outlet) is 180°C, 210°C, 225°C, 225°C, 215°C, 210°C, 210°C, 210°C, 210°C, 210°C, 210°C ℃, 210 ℃, the twin-screw extruder speed is set to 480r / min, the strips are cooled in a water tank, dried by a blast dryer, and pelletized by a pelletizer to obtain the product.

[0053] Absorbing component:

[0054] Weigh 6.87kg of PA6, bake at 100°C for 4 hours, add 50g...

Embodiment 2

[0059] Translucent components:

[0060] Weigh 5.87kg of PA66, bake at 100°C for 4 hours, PA6I 1.0kg, 50g of translucent black powder, 50g of lubricant, and 30g of antioxidant, mix them evenly in a high-speed mixer to obtain a resin mixture, and set aside;

[0061] Weigh 3.0 kg of glass fiber and set aside.

[0062] Above-mentioned resin mixture is joined in the twin-screw extruder (screw diameter is 35mm, length-to-diameter ratio is L / D=40) through main feeding port, glass fiber is added into twin-screw extruder through side feeding port, double The control temperature of each section of the screw extruder (from the feeding port to the nozzle outlet) is 210°C, 240°C, 265°C, 265°C, 255°C, 240°C, 240°C, 240°C, 240°C, 240°C, 240°C ℃, 240 ℃, the twin-screw extruder speed is set to 480r / min, the strips are cooled in a water tank, dried by a blast dryer, and pelletized by a pelletizer to obtain the product.

[0063] Absorbing component:

[0064] Weigh 6.87kg of PA66, bake the mat...

Embodiment 3

[0069] Translucent components:

[0070] Weigh 5.87kg of PA6 / 66, bake at 100°C for 4 hours, PA6I 1.0kg, 50g of translucent black powder, 50g of lubricant, 30g of antioxidant, mix them evenly in a high-speed mixer to obtain a resin mixture, and set aside;

[0071] Weigh 3.0 kg of glass fiber and set aside.

[0072] Above-mentioned resin mixture is joined in the twin-screw extruder (screw diameter is 35mm, length-to-diameter ratio is L / D=40) through main feeding port, glass fiber is added into twin-screw extruder through side feeding port, double The control temperature of each section of the screw extruder (from the feeding port to the nozzle outlet) is 180°C, 210°C, 225°C, 225°C, 215°C, 210°C, 210°C, 210°C, 210°C, 210°C, 210°C ℃, 210 ℃, the twin-screw extruder speed is set to 480r / min, the strips are cooled in a water tank, dried by a blast dryer, and pelletized by a pelletizer to obtain the product.

[0073] Absorbing component:

[0074] Weigh 6.87kg of PA6 / 66, bake the mat...

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Abstract

The invention discloses a color-selectable nylon composite material for laser welding and a preparation method thereof. The color-selectable nylon composite material comprises the following raw materials in percentage by weight: a light-transmitting component comprising: 27-100% ofnylon, 0-20% of a light-transmitting additive, 0-50% of glass fiber, 0.1-1% of light-transmitting black powder, 0-1% of an antioxidant and 0-1% of a lubricant; a light absorption component comprising: 44-99.5% of nylon, 0-50% of glass fiber, 0.5%-2% of a laser absorbent, 0-2% of a toner, 0-1% of an antioxidant, 0-1%of lubricant. According to the requirements of laser welding on the performance of the nylon material, the laser penetration efficiency of the nylon material is improved by adding a light-transmittingadditive into the light-transmitting layer; by using the light-transmitting black powder, the natural color material can be used as a light-transmitting layer, and the black material can also be usedas a light-transmitting layer; the laser absorbent is introduced into the material of the light-absorbing layer, so that the color of the laser absorbent is transparent, the influence on the color ofthe material is small, and the absorption efficiency of the laser absorbent is relatively high.

Description

technical field [0001] The invention relates to the application of nylon materials as laser welding parts. By designing the material formula, nylon materials can meet the requirements of the laser welding process for materials regardless of whether they are used as light-transmitting components or light-absorbing components. Material as applied in welded parts. Background technique [0002] With the rapid development of industry, plastics have been widely used in automobiles, home appliances and other fields due to their advantages such as light weight, high specific strength, corrosion resistance, and easy processing. Welding is an important means of plastic processing. According to different heating and softening methods, plastic welding can be divided into softening by external heat source, softening by mechanical movement and softening by electromagnetic action. The welding technology softened by external heat source can be divided into: hot plate welding, hot air weldi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L77/02C08L77/06C08K7/14C08K5/00C08K3/01
CPCC08L77/02C08L77/06C08K2201/003C08K2201/004C08L2205/03C08L2205/02C08L2205/025C08L83/04C08K7/14C08K5/0041C08K5/0008C08K3/01
Inventor 张海生杜国毅黄飞蔡青陈永东周文
Owner ZHEJIANG PRET NEW MATERIALS
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