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Laser markable polyamide composition and preparation method thereof

A polyamide composition and laser marking technology, which are applied in the field of polyamide composition and its preparation, can solve the problems of decreased physical properties of materials, poor laser marking effect, excessive addition amount, etc., and improve mechanical properties and impact strength. Improved, simple and reliable results

Active Publication Date: 2011-01-26
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] The technical problem to be solved by the present invention is to provide a laser-markable polyamide composition, which can overcome the poor laser marking effect in the prior art and the decline in the physical properties of the material caused by the excessive addition of the current laser auxiliary agent and the problem of expensive

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～10

[0040] Nylon 6 (viscosity is 3.2, Sinopec Baling Branch) and a small amount of coupling agent silane (brand KH550, Shanghai Yehao Chemical Co., Ltd.) are placed in a high-speed mixer for surface treatment; treated nylon 6, ultrafine full Vulcanized acrylate powder rubber (brand VP 301, Beijing Beihuayan Chemical New Technology Co., Ltd., particle size 100-150nm, gel content 85% by weight), pearlescent pigment (LM110, Liming Pearlescent Pigment Co., Ltd.; LS825, German Mo gram company) and titanium dioxide (TiO 2 ) after stirring evenly, the mixture was added into a twin-screw extruder (Germany WP Company, model ZSK-25) for melt blending and extruding and then granulated. The extrusion temperature was 235-250° C., and the screw speed was 300 rpm. The extruded pellets were dried in an oven at 80°C for 6 hours, and then injected into standard specimens at a temperature of 235-245°C for laser marking tests and related performance tests. The specific formula is shown in Table 1, w...

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PUM

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Abstract

The invention relates to a polyamide composition which can be marked with laser and the preparation method thereof. The composition comprises the following blended components: 100 parts of polyamide by weight, and 0.1-15 parts of powdered rubber by weight; wherein, the powdered rubber comprises acrylic ester powdered rubber. The preparation method comprises melt blending of the components including the polyamide and the powdered rubber according to the component compounding ratio. The composition of the invention can overcome the problems that in the prior art, the laser marking effect is notgood, and the material physical property is decreased and the cost is high caused by overabundant addition level of the prior laser additive. In the preparation method of the invention, the process is simple and reliable. The polyamide composition which can be marked with laser in the invention can be applied to the polyamide products which are required to be marked with laser in the almost all industrial departments.

Description

technical field [0001] The invention relates to a laser-markable polyamide composition and a preparation method thereof, in particular to a polyamide composition capable of forming dark-color markings on a light-color background and a preparation method thereof. Background technique [0002] Labeling on produced items is becoming increasingly important in almost all industrial sectors. For example, it is often necessary to indicate the production date, expiration date, barcode, company's trademark, serial number, etc. on the item. [0003] At present, there are many technical methods for printing marks on objects, such as screen printing and transfer printing, embossing, embossing, ink printing, etc. are all well-known printing technologies. These printing methods are surface printing, which means that the resulting identification mark becomes difficult to read due to mechanical damage, friction, chemical action and the like, and this printing method is difficult to apply t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L77/00C08K9/02C08L21/00C08L33/08C08K3/22
Inventor 王小兰张师军张薇张丽英李魁邵静波吕芸尹华吕明福张浩陈力刘涛
Owner CHINA PETROLEUM & CHEM CORP