Laser markable polyethylene composition and preparation method thereof

A technology for laser marking and polyethylene, which is applied to the field of laser-markable polyethylene composition and its preparation, can solve the problems of high price, excessive addition of laser marking, decreased physical properties of materials, etc. The effect of good laser marking and improved impact strength

Active Publication Date: 2008-07-30
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 polyethylene composition, which can overcome the difficulty in laser marking o

Method used

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  • Laser markable polyethylene composition and preparation method thereof
  • Laser markable polyethylene composition and preparation method thereof

Examples

Experimental program
Comparison scheme
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Example

[0035] Examples 1-7:

[0036] Put polyethylene resin (low-density polyethylene, LDPE, grade 1F7B, Yanshan Branch of Sinopec) and simethicone (grade 201, viscosity of 1000 centipoise, Beijing Second Chemical Plant) in a high-speed mixer for processing; then The treated polyethylene, ultrafine fully vulcanized powder styrene-butadiene rubber (brand VP101, Beijing Beihuayan Chemical New Technology Co., Ltd., particle size 80nm, gel content 90%), laser additives (brand LS825, Merck, Germany) , Antioxidant 1076 (Beijing Chemical No. 3 Factory) and Antioxidant DSTP (Beijing Chemical No. 3 Factory) are mixed evenly, then the mixture is added to the twin-screw extruder (Germany WP company, model ZSK-25) for melting After mixing and extruding, pelletizing, the extrusion temperature is 130~190℃, and the screw speed is 300rpm. Dry the extruded pellets in an oven at 80°C for 6 hours, and then inject them into standard specimens at 150-210°C for laser marking tests and related performance test...

Example

[0037] Comparative example 1~4

[0038] Except for not adding styrene butadiene rubber powder and the specific formula is different, the other conditions are the same as the foregoing embodiment. The specific formula is shown in Table 1, wherein the content of each component is in parts by weight. The performance results are shown in Table 1.

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Abstract

The invention relates to polyethylene composition which can be marked with laser and the preparation method thereof. The composition includes the following blended components: 100 parts of polyethylene by weight, 0.1-15 parts of powdered rubber by weight, 0-2 parts of laser additive by weight, wherein, the powdered rubber comprises butylbenzene powdered rubber or / and carboxyl styrene butadiene powdered rubber. The preparation method comprises the step that the components including the polyethylene and the powdered rubber is melted and blended according to the compounding ratio of the components. The composition of the invention can overcome the problems that the polyethylene is difficult to be marked with laser, and the material physical performance is decreased and the cost is high caused by overabundant addition amount of the prior laser additive. In the preparation method of the invention, the process is simple and reliable. The polyethylene composition which can be marked with laser in the invention can be widely applied to the polyethylene products which are needed to be marked with laser.

Description

Technical field [0001] The invention relates to a laser-markable polyethylene (PE) composition and a preparation method thereof, in particular to a laser-markable light-colored polyethylene composition and a preparation method thereof. Background technique [0002] Polyethylene resin is the most produced variety among general synthetic resins. It mainly includes low density polyethylene (LDPE), linear low density polyethylene (LLDPE), high density polyethylene (HDPE) and some products with special properties. Because of its high cost performance, it is widely used in films, sheet products, injection molding products, blow molding products, pipes, wires and cables and other products. It is becoming more and more important to add logos to polyethylene products. For example, it is often necessary to mark the production date, expiration date, bar code, company trademark, serial number, etc. on the product. [0003] At present, there are many technical methods for adding marks on poly...

Claims

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Application Information

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IPC IPC(8): C08L23/06C08K3/34B29B9/12C08L9/06C08L83/04
Inventor 吕明福张师军张薇王小兰张丽英陈力张浩吕芸尹华邵静波刘涛李魁
Owner CHINA PETROLEUM & CHEM CORP
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