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Polypropelene composition capable of making with laser and preparation method thereof

A polypropylene composition and laser marking technology, which is applied in the field of polypropylene composition and its preparation, can solve the problems of material physical property degradation, difficulty in laser marking of polypropylene, excessive addition amount, etc., and achieve good surface regularity and marking Clear and fine contour lines, good dispersion effect

Active Publication Date: 2008-09-24
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] The technical problem to be solved by the present invention is to provide a polypropylene composition that can be laser marked, which is a polypropylene composition that can form bright white (yellow) marks on a dark background, and can overcome the difficulty of marking polypropylene. Laser marking and the excessive addition of the current laser additives cause the degradation of the physical properties of the material and the problem of high prices

Method used

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  • Polypropelene composition capable of making with laser and preparation method thereof

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Effect test

Embodiment 1-4

[0043] Polypropylene resin (PP, brand 2401, Sinopec Yanshan Branch) and simethicone oil (brand 201, viscosity is 1000 centipoise, Beijing Chemical Industry No. 2 Plant) are measured and placed in a high-speed mixer for processing; Polypropylene, superfine fully vulcanized powdered styrene-butadiene rubber (brand VP101, Sinopec Beijing Research Institute of Chemical Industry, particle size 80nm, gel content 90%), carbon black (Germany, Cabot, M470), antioxidant 1076 ( Beijing No. 3 Chemical Factory) after stirring evenly, put the mixture into a twin-screw extruder (Germany, WP company, model ZSK-25) for melt blending and extrusion and granulation. The extrusion temperature is 180-200 °C. Speed ​​300rpm. Dry the particles obtained through the extruder at 90°C for 6 hours, and then inject them into standard strips under the condition of 170-225°C for laser marking tests and related performance tests. The specific formula is shown in Table 1, wherein the contents of each componen...

Embodiment 5

[0045] Polypropylene resin (PP, brand 2401, Sinopec Yanshan Branch) and simethicone oil (brand 201, viscosity is 1000 centipoise, Beijing Chemical Industry No. 2 Plant) are measured and placed in a high-speed mixer for processing; Polypropylene, superfine fully vulcanized powdered styrene-butadiene rubber (brand VP101, Sinopec Beijing Research Institute of Chemical Industry, particle size 80nm, gel content 90%), carbon black (Germany, Cabot, M470), laser additives (brand LS835, German Merck), antioxidant 1076 (Beijing Chemical Industry No. Granules, all the other steps and conditions are the same as in previous examples 1-4. The specific formula is shown in Table 1, wherein the contents of each component are in parts by weight. The performance results are shown in Table 1.

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Abstract

The invention relates to a polypropylene compound which forms bright white (yellow) marks on dark background and a preparation method thereof. The polypropylene compound includes the following components which are blended: 100 weight portions of polypropylene; 0.1 weight portion to 20 weight portions of powdered rubber; 0.01 weight portion to 0.5 weight portion of carbon black; wherein, the powdered rubber includes SBR powdered rubber or / and carboxylated styrene butadiene powdered rubber. The preparation method includes the following step: the components including polypropylene, powdered rubber and carbon black are melted and blended by the proportion of components. The polypropylene compound of the invention can overcome the problems that polypropylene is difficult to produce laser marks, poorer physical performance and more expensive price of materials produced by too much laser promoter in the prior art; the preparation method of the invention has simple and reliable process.

Description

technical field [0001] The invention relates to a polypropylene composition for forming bright white (yellow) marks on a dark background and a preparation method thereof. Background technique [0002] Marking and labeling of produced items is becoming more and more important in almost all industrial sectors. For example, it is often necessary to indicate the production date, expiration date, bar code, 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 and other printing technologies. These printing methods are surface printing, which means that the resulting identification marks may become illegible due to mechanical damage, friction, chemical action or similar effects, and this printing method is difficult to apply to curved or textured surfaces, Furthermore, the special processing costs required add to t...

Claims

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Application Information

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IPC IPC(8): C08L23/12C08K9/02C08L9/00C08K3/04C08K3/34
Inventor 张薇张师军王小兰张丽英吕明福尹华邵静波吕芸张浩李魁陈力刘涛
Owner CHINA PETROLEUM & CHEM CORP
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