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Gamma-ray-resistant anti-aging transparent polypropylene composite material and preparation method thereof

A transparent polypropylene and composite material technology, applied in the field of polypropylene materials, can solve the problems of limiting the application of PP materials, deterioration of physical and mechanical properties, loss of use performance, etc., to achieve weakened post-irradiation effects, excellent transparency, and enhanced dispersion sexual effect

Active Publication Date: 2020-09-18
WANHUA CHEM GRP CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the radiation stability of ordinary medical PP is poor. After radiation disinfection, the physical and mechanical properties of PP deteriorate, the color turns yellow, and with the increase of storage time, the aging phenomenon is aggravated, so that it loses its usability.
The reduction of mechanical properties and yellowing problems caused by radiation degradation severely limit the application of PP materials in medical devices and other radiation processing fields.

Method used

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  • Gamma-ray-resistant anti-aging transparent polypropylene composite material and preparation method thereof
  • Gamma-ray-resistant anti-aging transparent polypropylene composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-4 and comparative example 1-4

[0053] Weigh each raw material component according to the parts by weight shown in Table 1 below, add it to a high-speed mixer and stir for 10 minutes to mix evenly, then add it to a twin-screw extruder for melt extrusion, and the temperature of the extruder is set as: feeding to The temperature of the die section is 120°C-180°C, the temperature of the head and the die is 185-200°C, and the screw speed of the main engine is 300-500r / min. After melt extrusion, the final product polypropylene composite material can be obtained after pelletizing and drying.

[0054] Samples were prepared for the prepared polypropylene composite material and various properties were tested before and after irradiation (irradiation dose was 50KGy), and the results were recorded in Table 2 below.

[0055] The random copolymerized polypropylene in the examples is the random copolymerized polypropylene PPR7227 produced by Total.

[0056] The acid absorbing agent uses calcium stearate.

[0057] As the...

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Abstract

The invention discloses a gamma-ray-resistant anti-aging transparent polypropylene composite material and a preparation method thereof, the polypropylene composite material comprises polypropylene resin, a nucleating agent, an acid acceptor and an irradiation stabilizer, and the irradiation stabilizer comprises methyl phenyl vinyl silicone rubber, a coupling agent, a montmorillonite material, an antioxidant and a light stabilizer. By optimizing the formula of the irradiation stabilizer, the irradiation resistance of the polypropylene is improved, and the prepared polypropylene material has good transparency and excellent aging resistance after irradiation, can be used at high temperature for a long time without discoloration, and has good mechanical properties.

Description

technical field [0001] The invention belongs to the field of polypropylene materials, and in particular relates to a gamma ray radiation-resistant aging-resistant transparent polypropylene composite material and a preparation method thereof. Background technique [0002] With the development of the nuclear industry, various radioactive industries are becoming more and more popular. Gamma rays are radioactive and will cause harm to the human body and need to be shielded. Therefore, research on radiation-proof materials is imperative. Moreover, gamma rays are often used for disinfection in the medical industry now, and the radiation protection effect of medical plastics is particularly important. [0003] Polypropylene is widely used in the field of medical devices due to its excellent comprehensive properties. However, the radiation stability of ordinary medical PP is poor. After radiation disinfection, the physical and mechanical properties of PP deteriorate, and the color ...

Claims

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Application Information

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IPC IPC(8): C08L23/14C08L83/07C08K13/02C08K3/34C08K5/5455C08K5/134C08K5/526C08J3/28
CPCC08L23/14C08J3/28C08J2323/14C08J2483/07C08L2201/08C08L2201/10C08L83/04C08K13/02C08K3/346C08K5/5455C08K5/1345C08K5/526
Inventor 翟一鸣徐彦龙朱文俊李允升张起政吴庆虎秦中宇张宏科
Owner WANHUA CHEM GRP CO LTD
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