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Gamma ray irradiation-resistant polypropylene material and preparation method thereof

A polypropylene material and gamma ray technology, applied in the field of polypropylene material and its preparation, can solve the problems of accelerated PP oxidation degradation, product color yellowing, etc., and achieve good mechanical properties and low yellowness

Inactive Publication Date: 2013-11-20
GUANGZHOU JET BIOFILTRATION CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, after the PP material is irradiated by gamma rays, the oxidative degradation of PP will be accelerated, and the color of the product will turn yellow.

Method used

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  • Gamma ray irradiation-resistant polypropylene material and preparation method thereof
  • Gamma ray irradiation-resistant polypropylene material and preparation method thereof

Examples

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preparation example Construction

[0025] A preparation method of a gamma ray radiation-resistant polypropylene material, comprising the following steps:

[0026] 1) Dry the raw materials;

[0027] 2) Put the dried polypropylene in boiling xylene, add the dried stabilizer and antioxidant, stir for 2-3 hours, cool down to room temperature, suction filter and dry to obtain a masterbatch, and place the masterbatch in Melt and extrude in an extruder, draw, cool, dry, and pelletize.

[0028] The dosage ratio of polypropylene and xylene is 1g: (100-150)ml.

Embodiment 1

[0031] A kind of gamma ray radiation-resistant polypropylene material, its formula composition is as follows:

[0032] Table 1

[0033] raw material mass percentage PP 99 % Antioxidant 1076 0.5% (1,2,2,6,6-pentamethyl)piperidinol benzoate margin

Embodiment 2

[0035] A kind of gamma ray radiation-resistant polypropylene material, its formula composition is as follows:

[0036] Table 2

[0037] raw material mass percentage PP 99% Antioxidant 1010 0.3% (1,2,2,6,6-pentamethyl)piperidinol benzoate margin

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PUM

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Abstract

The invention discloses a gamma ray irradiation-resistant polypropylene material. The polypropylene material comprises PP (propene polymer), a stabilizer and an antioxidant. The invention also discloses a preparation method of the gamma ray irradiation-resistant polypropylene material. The preparation method comprises the following steps of: 1) drying raw materials; 2) putting the dried PP into boiling xylene, adding the dried stabilizer and antioxidant, fully dispersing, cooling to room temperature, leaching, drying so as to prepare a parent stock, putting the parent stock into an extruder, then melting, extruding, drawing, cooling, drying and granulating so as to prepare the polypropylene material. The polypropylene material prepared by the method has the advantages of better mechanical property, lower yellowness index, and gamma ray irradiation-resistant performance.

Description

technical field [0001] The invention relates to a polypropylene material resistant to gamma ray irradiation and a preparation method thereof. Background technique [0002] Radiation research by gamma rays began in the 1950s. In Europe and the United States, radiation disinfection of medical supplies has become a new generation of disinfection technology, and most of the gamma ray industrial devices are used in this field. The gamma ray method is suitable for large-scale disinfection, its dose is evenly distributed, the disinfection and sterilization are thorough, no pollution, no residue; no heating is required, the operation is simple and fast, continuous operation is possible, and the sterilized products can be stored for a long time, which is better than conventional thermal disinfection , Chemical disinfection is superior, widely used in the sterilization and disinfection of medical devices. There are many types of radiation sterilization and disinfection of medical su...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08K5/3435C08K5/13
Inventor 袁建华袁晔
Owner GUANGZHOU JET BIOFILTRATION CO LTD
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