Laser-labelable, halogen-free and flame-retardant polyamide composition and preparation method thereof

A technology of polyamide composition and flame-retardant polyamide, which is applied in the field of laser-markable halogen-free flame-retardant polyamide composition and its preparation, can solve the problem that polyamide composition cannot meet clear marking at the same time, and achieve marking speed Fast, good flame retardancy and electrical performance, low power effect

Inactive Publication Date: 2019-09-13
江苏晋伦塑料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to overcome the difficulty that the existing polyamide composition cannot meet the requirements of clear marking under infrared laser and ultraviolet laser

Method used

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  • Laser-labelable, halogen-free and flame-retardant polyamide composition and preparation method thereof
  • Laser-labelable, halogen-free and flame-retardant polyamide composition and preparation method thereof
  • Laser-labelable, halogen-free and flame-retardant polyamide composition and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0068] Example 1, Example 2, Comparative Example 1 and Comparative Example 2, issued the performance of different filling systems and laser additive compositions on laser marking performance, these examples and comparative examples show the combination of adding self-prepared laser additive 1 Clear marking can be achieved under both infrared and ultraviolet laser marking machines. The laser marking effect is better than that of glass fiber when talcum powder is used as filler, and the mechanical properties are not significantly worse than those of the comparative example without laser additives. The comparative example without adding laser additives cannot achieve clear marking under both infrared and ultraviolet lasers.

Embodiment 3

[0069] Example 3, Example 4 and Comparative Example 3 show the laser marking performance of different flame retardant systems under glass fiber reinforcement. These examples and comparative examples show that the addition of laser additive composition 2 can achieve clear marking under ultraviolet and infrared lasers, and at the same time, the flame retardancy and electrical properties are not significantly deteriorated compared with comparative example 3 without adding laser additives. Examples 3 and 4 show that both MPP and OP1400 as flame retardants can achieve a flame retardancy level of 0.75mmV-0, but the composition using OP1400 has better mechanical properties. Examples 4 and 5 show that the addition of self-prepared laser additive 2 has a very good laser marking effect in the circular interface and glass fiber filling system with special-shaped cross-section, and the composition using glass fiber with special-shaped cross-section has better mechanical properties. .

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Abstract

The invention discloses a laser-labelable, halogen-free and flame-retardant polyamide composition and a preparation method thereof. The composition comprise 47.4-78.8 wt% of a polyamide, 10-20 wt% ofa halogen-free flame retardant, 10-30 wt% of a mineral filler, 1-3 wt% of a self-made laser additive, 0.1-0.3 wt% of a dispersant and 0.1-0.4 wt% of an antioxidant, wherein the self-made laser additive is a mixture composed of titanium dioxide, mica powder, nanometer tin antimony oxide and copper according to a mass ratio of (10-10.4):(2.5-7.2):(1.4-1.5):1, and is prepared by melt blending througha screw extruder. The obtained polyamide composition can simultaneous be clearly deeply labeled with infrared laser and ultraviolet laser, and maintains good mechanical and electrical performances.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to a laser-markable halogen-free flame-retardant polyamide composition and a preparation method thereof. Background technique [0002] In the low-voltage electrical field, laser marking is rapidly replacing traditional ink printing and silk screen printing due to its high efficiency, environmental protection, and non-wear-resistant markings. Laser marking equipment can be divided into two types according to the laser wavelength, which are ultraviolet laser machines with a wavelength of 355nm and infrared laser machines with a wavelength of 1060nm. Different materials have different absorption effects on different wavelengths of laser light. Polyamide materials cannot effectively absorb infrared and ultraviolet lasers because of their natural color characteristics. Therefore, marking under infrared or ultraviolet laser cannot be achieved without adding other la...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L77/02C08L23/08C08K13/02C08K5/3492C08K3/22C08K3/34C08K3/24C08K5/5313C08K5/521C08K13/04C08K7/14
CPCC08K2003/2241C08K2201/003C08K2201/011C08K2201/014C08L77/02C08L2201/02C08L2201/22C08L23/0869C08K13/02C08K3/22C08K3/34C08K3/24C08L23/08C08K13/04C08K7/14C08K5/521C08K5/5313
Inventor 曹进龙陈原振林柏龄陈跃民
Owner 江苏晋伦塑料科技有限公司
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