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Irradiation-resistant polypropylene composition, preparation method and application thereof

A polypropylene composition and radiation-resistant technology, applied in the field of radiation-resistant polypropylene composition and its preparation, can solve the problems of destroying the mechanical properties of materials and reducing the sterilization cycle

Pending Publication Date: 2021-05-18
河南驼人医疗器械研究院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These products are provided aseptically. The irradiation sterilization method can greatly reduce the sterilization cycle and ensure the supply of epidemic medical products. However, most of the irradiation sterilization uses high-energy electron beams. Destroy mechanical properties, optical properties and biological safety of materials

Method used

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  • Irradiation-resistant polypropylene composition, preparation method and application thereof
  • Irradiation-resistant polypropylene composition, preparation method and application thereof
  • Irradiation-resistant polypropylene composition, preparation method and application thereof

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preparation example Construction

[0058] The present invention provides a preparation method of the radiation-resistant polypropylene composition described in the above technical solution, comprising:

[0059] Carrying out the first mixing of polypropylene, thermoplastic elastomer, tsib-POSS, nucleating agent, light stabilizer, antioxidant, lubricant and processing aid to obtain a compound;

[0060] The mixture and silicone oil are mixed for the second time to obtain a mixture;

[0061] The mixture is extruded and granulated to obtain a radiation-resistant polypropylene composition.

[0062] In the present invention, the types and parts by weight of the polypropylene, thermoplastic elastomer, tsib-POSS, nucleating agent, light stabilizer, antioxidant, lubricant, processing aid and silicone oil are consistent with the above technical scheme, I won't repeat them here.

[0063] In the present invention, the temperature of the first mixing and the second mixing is independently preferably 10-35°C, more preferabl...

Embodiment 1

[0070] Take by weight 85 parts of PP resin (polypropylene), 15 parts of SEBS, 2 parts of tsib-POSS, 0.5 parts of α-nucleating agent (1,3 bis (p-tert-butylphenoxy) sodium phosphate and 2,2'-methylenebis(4,6-di-tert-butylphenoxy)aluminum phosphate in a mass ratio of 3:2), 0.4 parts of β-nucleating agent (WBG-Ⅱ nucleating agent and NAB The mass ratio of -82 nucleating agent is (3:5)), 0.75 parts of light stabilizer 1010, 0.6 parts of antioxidant 783, 0.2 parts of lubricant calcium stearate, 0.3 parts of processing aid PE wax Put it into a high-mixer for the first mixing, and mix evenly to obtain a mixture; add 0.25 parts of silicone oil to the mixture for the second mixing until uniformly mixed to obtain a mixture;

[0071] The above-mentioned first mixing and second mixing are carried out under stirring conditions, the stirring speed is 40rpm, the temperature of the first mixing and the second mixing is 25°C, and the time of the first mixing and the second mixing is 15min;

[0...

Embodiment 2

[0074] Take by weight 89 parts of PP resin (polypropylene), 11 parts of SEBS, 2 parts of tsib-POSS, 0.6 parts of α-nucleating agent (1,3 bis (p-tert-butylphenoxy) sodium phosphate The mass ratio of 2,2'-methylenebis(4,6-di-tert-butylphenoxy)aluminum phosphate is 1:2), 0.4 parts of β-nucleating agent (WBG-Ⅱ nucleating agent), 0.75 parts of light stabilizer 1010, 0.5 parts of antioxidant 783, 0.2 parts of lubricant calcium stearate, and 0.3 parts of processing aid PE wax are put into a high-mixer for the first mixing, mixed evenly, and mixed material; add 0.25 parts of silicone oil to the mixture for the second mixing until uniformly mixed to obtain a mixture;

[0075] The above-mentioned first mixing and second mixing are carried out under the condition of stirring, the rotation speed of the stirring is 30 rpm, the temperature of the first mixing and the second mixing is 10° C., and the time of the first mixing and the second mixing is 8 minutes;

[0076] The mixture was extru...

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Abstract

The invention provides an irradiation-resistant polypropylene composition, which is prepared from the following components in parts by weight: 76 to 95 parts of polypropylene, 5 to 24 parts of a thermoplastic elastomer, 0.5 to 10 parts of tsib-POSS, 0.1 to 0.8 part of a nucleating agent, 0.1 to 1 part of a stabilizer, 0.1 to 1.5 parts of an antioxidant, 0 to 0.5 part of a lubricant, 0 to 0.5 part of a processing aid and 0 to 0.3 part of silicone oil. The irradiation-resistant polypropylene composition provided by the invention can be used for preparing irradiation-resistant medical equipment products, not only has good transparency, mechanical properties and biological safety, meets the requirements of medical PP products, especially the use requirements in the field of humidifying and atomizing products, but also has an extremely short irradiation sterilization period, and can ensure emergency demands of major health public emergencies on medical products. The invention also provides a preparation method and application of the irradiation-resistant polypropylene composition.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to a radiation-resistant polypropylene composition and a preparation method and application thereof. Background technique [0002] Polypropylene (PP) has excellent mechanical properties, low relative density, chemical resistance, heat resistance, non-toxicity, low price, and easy processing and molding. It has become the fastest growing variety among the five general-purpose plastics and the only one among general-purpose resins. A resin that can be boiled in water and sterilized at 130°C. [0003] Compared with other traditional plastics, polypropylene has many advantages, but because polypropylene is a crystalline polymer, the formed spherulites are larger, the crystallization speed is relatively slow, and it lacks chemically active functional groups, so there are also some shortcomings, such as polypropylene Propylene has poor toughness, easy aging, low tra...

Claims

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Application Information

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IPC IPC(8): C08L23/12C08L83/07C08L83/04C08L53/02C08L23/08C08K5/098C08K5/52
CPCC08L23/12C08L2207/04C08L2205/025C08L2205/03C08L2203/02C08L2205/24C08L2205/242C08K2201/014C08L83/04C08L53/025C08K5/098C08K5/52C08L23/0815
Inventor 蒋飞远崔景强王国锋李菲赵庆彦楚艳杰时梦梦刘念念李前辉林广成周义凯张立强巴艳卿马攀龙
Owner 河南驼人医疗器械研究院有限公司
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