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Resin composition applicable to laser welding and with high metal texture and preparation method thereof

A resin composition and laser welding technology, which is applied in the field of car lights, can solve problems such as low laser absorption rate and two parts cannot be welded to welding strength, etc., achieve simple process operation, improve laser absorption rate and welding strength, and improve Effect of Welding Strength and Welding Yield

Active Publication Date: 2019-05-31
HASCO VISION TECHNOLOGY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, if the opaque plastic is difficult to absorb laser light or its laser absorption rate is not high, it is easy to cause two parts to be welded or the weld strength is too low

Method used

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  • Resin composition applicable to laser welding and with high metal texture and preparation method thereof
  • Resin composition applicable to laser welding and with high metal texture and preparation method thereof
  • Resin composition applicable to laser welding and with high metal texture and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0104] A laser-weldable resin composition with high metallic texture is used for injection molding the resin composition into a car lamp bezel, and laser welding is performed on the car lamp bezel and a transparent PC inner light distribution mirror.

[0105] The resin composition preparation method comprises the following steps:

[0106] Prepare raw materials according to the following components and parts by weight:

[0107]

[0108] The laser powder is Sn / In mixed oxide type,

[0109] The metal pigment is aluminum powder with a particle diameter of 0.5 μm to 40 μm.

[0110] The color additive is selected from inorganic toner with a particle size of 0.001 μm to 1 μm rutile titanium dioxide and iron oxide red iron oxide, and pearlescent powder with a particle size of 0.001 μm to 50 μm. The core of the pearlescent powder is mica with a low optical refractive index. The outer layer is coated with titanium dioxide or iron oxide with a high refractive index, and ceramic powd...

Embodiment 2

[0116] A laser-weldable resin composition with high metallic texture is injection-molded into a flat plate, which is laser-welded with a transparent PC plate and used for molding to obtain car lamp parts. Or the resin composition is injection-molded into a car lamp bezel, and the car light bezel is directly laser-welded with a transparent PC inner light distribution mirror. Its preparation method comprises the following steps:

[0117] Prepare raw materials according to the following components and parts by weight:

[0118]

[0119]

[0120]The laser powder is selected from Sn / Sb mixed oxide type (50%)+TiO2 type (50%),

[0121] The metal pigment is zinc powder (50%)+copper powder (50%) with a particle size of 0.5 μm to 40 μm,

[0122] The color additive is selected from carbon black series + iron oxide series + chromium series and metal oxide mixed-phase pigment system with inorganic toner particle size of 0.001 μm ~ 1 μm, pearl powder with particle size of 0.001 μm ~ ...

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Abstract

The invention relates to the field of automotive materials, in particular to a resin composition applicable to laser welding and with high metal texture and a preparation method thereof. The resin composition comprises, by weight, 100 parts of matrix resin, 0.05-5.0 parts of laser powder, 0.1-5.0 parts of metal pigment, 0.05-5.0 parts of pigment additive and 0.1-1.0 part of antioxidant. The preparation method includes: sufficiently mixing the matrix resin, the laser powder, the metal pigment, the pigment additive and the antioxidant in a low-speed mixer, feeding into a double-screw extruder through a metering device, performing screw conveying, shearing and mixing to allowing the materials to sufficiently melt and mix, and performing extrusion, drawing, cooling and grain-sized dicing to obtain the resin composition applicable to laser welding. The prepared resin composition with high metal texture can have excellent laser welding performance.

Description

technical field [0001] The invention relates to a resin composition capable of laser welding and having a high metal texture and a preparation method thereof. The resin composition with a high metal texture of the invention can be used in the fields of car lamps and the like. Background technique [0002] Laser welding technology is now gradually being used in the automotive field, especially for parts on car lights. Laser welding technology has begun to be used to weld plastic parts of car lights together. [0003] The aesthetic resin material with high metallic texture is easy to win the favor of modeling and designers due to its perfect appearance. However, the usual aesthetic resins for car lights do not have enough ability to absorb laser energy, so this type of material cannot be used for car light parts that require laser welding, or when laser welding is performed, the laser welding strength is not enough Lead to low yield. [0004] On the other hand, when laser we...

Claims

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Application Information

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IPC IPC(8): C08L69/00C08L55/02C08K3/22C08K3/08
Inventor 文珍稀顾丹吴苏容樊一君陈兆禹李志兵
Owner HASCO VISION TECHNOLOGY CO LTD
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