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Modified plastic for laser welding and preparation method thereof

A laser welding and modification technology, applied in the field of materials, can solve the problems of low laser transmittance, strong toxicity and high mobility, and achieve the effects of high laser transmittance, good weather resistance and low mobility

Active Publication Date: 2020-05-08
YANFENG PLASTIC OMNIUM AUTOMOTIVE EXTERIOR SYST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a modified plastic that can be used for laser welding and its preparation method, so as to solve the problems that the modified materials in the prior art have either low laser transmittance, strong toxicity, and high mobility

Method used

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  • Modified plastic for laser welding and preparation method thereof
  • Modified plastic for laser welding and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] With 84kg polypropylene H9018, 15kg ethylene-octene copolymer 8137, 0.2kg perylene-based black toner L480, 0.3kg antioxidant 1010, 0.2kg lubricant (stearic acid), 0.3kg weather resistance additive, in the long Melt, mix and disperse in a twin-screw extruder with a diameter ratio of 40:1, extrude at a temperature of 200°C, extrude and granulate, and finally obtain the product.

Embodiment 2

[0036] 54kg polypropylene K9017, 27kg polypropylene BX3900, 18kg ethylene-butene copolymer 7467, 0.2kg perylene-based black toner L480, 0.3kg antioxidant 1010, 0.2kg lubricant (stearic acid), 0.3kg weather resistance The auxiliary agent is melted, mixed and dispersed in a twin-screw extruder with a length-to-diameter ratio of 40:1, and the extrusion temperature is 200° C., extruded and granulated, and finally the product is obtained.

[0037] Example 2 On the basis of Example 1, a single type of polypropylene is replaced by two types of polypropylene mixtures, these two types of polypropylene are respectively homopolymerized and copolymerized with different melt fingers, and the two components The combination ensures that the substrate has higher laser transparency than that of Example 1 on the basis that the material has a certain processing type and mechanical properties. After adding the same content of perylene-based black toner, its laser transparency Transient still has ...

Embodiment 3

[0039] 50kg polypropylene K9017, 30kg polypropylene BX3900, 19kg ethylene-butene copolymer 7467, 0.05kg perylene-based black toner L480, 0.3kg antioxidant 1010, 0.3kg lubricant (stearic acid), 0.35kg weather resistance The auxiliary agent is melted, mixed and dispersed in a twin-screw extruder with a length-to-diameter ratio of 40:1, and the extrusion temperature is 200° C., extruded and granulated, and finally the product is obtained.

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PUM

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Abstract

The invention provides a modified plastic that can be used for laser welding. The modified plastic is prepared by adding a perylene black toner to a matrix permeable to laser. The mass percentage of the perylene black toner in the modified plastic is 0.05-5%. The modified plastic is permeable to laser in the range of 800-1100 nm. The invention also provides a preparation method of the modified plastic that can be used for laser welding. According to the invention, a modified plastic that presents high laser transmittance, ease for dyeing, low migration, good weatherability, and accordance with the performance and aspect requirements for long term external exposure is provided, thereby greatly expanding the applicability of laser welding technology in the field of automobile interior and exterior trim parts.

Description

technical field [0001] The invention relates to the field of materials, in particular to a modified plastic capable of laser welding and a preparation method thereof. Background technique [0002] Laser welding is a technology that uses the heat generated by a laser beam to melt plastic contact surfaces, thereby bonding thermoplastic sheets, films or molded parts together. The most commonly used form of laser welding is called transmission laser welding. [0003] The process of laser transmission welding technology is: first clamp two plastic parts to be welded together, and then direct a beam of laser light in the short-wave infrared region to the part to be bonded, the laser beam passes through the upper material, and then is absorbed by the lower material, The laser energy is absorbed to raise the temperature of the underlying material, melting the upper layer and the plastic of the lower layer, thus completing the welding. Wherein, the upper material can be transparent...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L69/00C08L55/02C08L23/12C08L23/14C08L23/08C08L67/02C08K5/3445
CPCC08K5/3445C08L23/12C08L23/14C08L55/02C08L69/00C08L2205/025C08L2205/03C08L23/0815C08L67/02C08J3/12C08J3/201C08J3/203C08J2323/08C08J2323/12C08J2369/00C08J2423/12C08J2455/02C08J2467/02C08K5/0041C08K5/3437C08L2205/16C08K5/3442C08K7/14
Inventor 秦玉洁王俊
Owner YANFENG PLASTIC OMNIUM AUTOMOTIVE EXTERIOR SYST
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