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A kind of production method of long-acting antibacterial polypropylene special material

A technology of antibacterial polypropylene and a production method, which is applied in the field of producing long-acting antibacterial polypropylene special materials, can solve the problems of poor color stability of silver-based antibacterial agents, inability to uniformly disperse antibacterial components, and inability to lasting antibacterial effects, and achieve physical and mechanical properties. and long-term antibacterial performance improvement, quick and easy switching, less transition products

Active Publication Date: 2016-03-02
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the color stability of silver-based antibacterial agents is poor, and the color will change during use, and the antibacterial components in polypropylene cannot be dispersed evenly, and the antibacterial effect cannot last.

Method used

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  • A kind of production method of long-acting antibacterial polypropylene special material
  • A kind of production method of long-acting antibacterial polypropylene special material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] After prepolymerizing the catalyst TK and some polypropylene monomers, add the cocatalyst triethylaluminum, external electron donor dimethyldimethoxysilane, propylene monomer and hydrogen into the first reactor, and the reaction temperature is 65°C , reaction pressure 2~3MPa, H 2 / C 3 The mass ratio is controlled at 0.15‰, and the gas phase polymerization is carried out. The reaction product enters the second reactor, and the comonomer ethylene is added, the amount of which is controlled at 1.8Kg / hr, the reaction temperature is 75°C, the reaction pressure is 2-3MPa, and the ethylene content in the polymer is controlled at 7.5%. In the granulation process, the reaction product is added with 0.3% of the nano-rubber compounding auxiliary system loaded with antibacterial agent, and the long-acting antibacterial polypropylene special material is obtained from the discharge.

Embodiment 2

[0020] After the catalyst ND is pre-complexed with the cocatalyst triethylaluminum, the external electron donor (combined with dimethyldimethoxysilane and tetraethoxysilane), propylene monomer, and hydrogen are added to the first reactor , reaction temperature 70°C, reaction pressure 2-3MPa, H 2 / C 3 The mass ratio is controlled at 0.1‰, and the gas phase polymerization is carried out. The reaction product enters the second reactor, and the comonomer ethylene is added, the amount of which is controlled at 1.5Kg / hr, the reaction temperature is 80°C, the reaction pressure is 2-3MPa, and the ethylene content in the polymer is controlled at 7.0%. In the granulation process, the reaction product is added with 0.4% of the nano-rubber compounding auxiliary system loaded with antibacterial agent, and the long-acting antibacterial polypropylene special material is obtained from the discharge.

Embodiment 3

[0022] The catalysts CDI and NG are compounded first, and then pre-polymerized with some polypropylene monomers, and then compounded with cocatalyst triethylaluminum and external electron donors (dimethyldimethoxysilane and tetraethoxysilane ), propylene monomer and hydrogen are added to the first reactor, the reaction temperature is 60°C, the reaction pressure is 2-3MPa, H 2 / C 3 The mass ratio is controlled at 0.2‰, and the gas phase polymerization is carried out. The reaction product then enters the second reactor, and the comonomer ethylene is added, the amount of which is controlled at 2.0Kg / hr, the reaction temperature is 75°C, the reaction pressure is 2-3MPa, and the ethylene content in the polymer is controlled at 7.5%. In the granulation process, the reaction product is added with 0.5% of the nano-rubber compounding auxiliary system loaded with antibacterial agent, and the long-acting antibacterial polypropylene special material is obtained from the discharge.

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Abstract

The invention discloses a method for production of long-acting antibacterial PP special material. The production process is performed in two horizontal Amoco stirred reactors which are connected in series, an ordinary commercial Z-N polymerization catalyst and a direct polymerization method are adopted, and through adjusting the hydrogen regulation sensitivities of the catalyst in different stirred reactors in an Amoco gas-phase polymerization device and the performance of copolymerization of propylene and ethylene, a double-reactor series-connection polymerization mode is utilized to obtain polypropylene composition base material, and a special composite antibacterial auxiliary system is added in the granulation stage, and an antibacterial agent is uniformly dispersed in the PP. The long-acting antibacterial PP special material has a long-acting antibacterial property, and can be directly suitable for fields such as household appliances, automobiles and daily necessaries which have higher antibacterial requirements.

Description

technical field [0001] The invention relates to the field of new materials, in particular to a method for producing long-acting antibacterial polypropylene special materials. Background technique [0002] With the rapid development of the national economy, people's material, cultural and living standards are gradually improving, and plastics play an increasingly important role in daily life. Polypropylene is a non-toxic plastic with high heat resistance and good strength, and is widely used in many fields. However, polypropylene, like other plastics, is easily polluted by various harmful bacteria and molds, and bacteria are more likely to multiply when the temperature and humidity are suitable. For this reason, many domestic plastic modification companies solve the problem that polypropylene products are easily polluted by adding antibacterial raw materials to polypropylene products, but this is easy to make the color of polypropylene products yellow, and it cannot make ant...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L53/00C08F293/00C08F2/01
Inventor 魏峰徐振明傅勇
Owner CHINA PETROLEUM & CHEM CORP
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